Battery device, chassis of vehicle and vehicle

Abstract

The utility model discloses a battery device, a chassis of a vehicle and the vehicle. The battery device comprises a first beam and a separation beam, the number of the first beams is multiple, the multiple first beams are connected to define a containing space, the containing space is used for containing the single batteries, the separation beams are arranged in the containing space, and the two ends of at least one separation beam are connected with the oppositely-arranged first beams; wherein at least one first beam comprises a middle beam and inclined beams located at the two ends of the middle beam, one end of each inclined beam is connected with the middle beam, and the other end of each inclined beam extends towards the separation beam opposite to and adjacent to the inclined beam and is connected with the separation beam. Therefore, while deformation of the battery device is reduced, collision energy can be guided to be transmitted to the end parts of the first beams, so that the collision energy is guided to be dissipated through the plurality of first beams and the separation beams, deformation of the middle beam is absorbed through the deformation space, and the probability that the deformation intrudes into the accommodating cavity in which the battery monomers are located is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a battery device, a vehicle chassis, and a vehicle. Background Technology

[0002] Among related technologies, energy conservation and emission reduction are key to the sustainable development of the vehicle industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important part of the sustainable development of the vehicle industry. However, the battery installation in electric vehicles results in a significantly higher weight than traditional vehicles, often leading to more severe consequences in collisions involving electric vehicles. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a battery device that offers better protection for individual battery cells, and provides higher safety and reliability.

[0004] This application also proposes a chassis for a vehicle employing the aforementioned battery device.

[0005] This application further proposes a vehicle using the aforementioned chassis.

[0006] In a first aspect, embodiments of this application propose a battery device, comprising: a first beam and a partition beam; there are multiple first beams connected to enclose an accommodating space for accommodating a single battery cell; there are multiple partition beams disposed within the accommodating space; at least one partition beam has both ends connected to a first beam arranged in a relative color sequence; wherein at least one first beam comprises: a middle beam and inclined beams located at both ends of the middle beam; one end of the inclined beam is connected to the middle beam, and the other end extends toward and is connected to the partition beam disposed opposite and adjacent to it.

[0007] According to the battery device of the present application embodiment, by setting a first beam and a partition beam, and making at least one first beam include a middle beam and an inclined beam, a triangular support structure can be formed between the inclined beam and the partition beam, and the gap between the middle beam and the adjacent partition beam can be formed as a deformation space. This strengthens the structural strength and support strength of the corner area where the first beams are connected, thereby reducing the deformation of the battery device. At the same time, it can also guide the collision energy to be transferred to the end of the first beam, so as to guide the collision energy to dissipate through multiple first beams and partition beams, and use the deformation space to absorb the deformation of the middle beam, thereby reducing the probability of deformation intruding into the cavity where the battery cell is located, and improving the protection effect on the battery cell.

[0008] According to some embodiments of this application, the battery device further includes an energy-absorbing structure disposed between the partition beam and the intermediate beam, and connected to the partition beam and the intermediate beam.

[0009] In the above technical solution, one end of the inclined beam is connected to the middle beam, and the other end of the inclined beam is connected to the partition beam, which can form a gap between the middle beam and the adjacent partition beam. This gap is the aforementioned deformation space. An energy-absorbing structure is further provided in the deformation space. When the middle beam is subjected to an impact, the impact energy can be transferred to the energy-absorbing structure through the middle beam. When the middle beam deforms, the energy-absorbing structure can collapse and deform to absorb the collision energy, which can further improve the protection effect, reduce the probability of deformation intruding into the accommodating space where the battery cell is located, and improve the protection effect for the battery cell.

[0010] According to some embodiments of this application, the length dimension L1 of the intermediate beam and the length dimension L2 of the energy-absorbing structure satisfy the following condition: 0.3≤L2 / L1≤1.

[0011] In the above technical solution, the length of the energy-absorbing structure is made more reasonable, so that the collision energy absorption effect of the energy-absorbing structure can meet the usage requirements, while also reducing the difficulty of arranging the energy-absorbing structure, avoiding the energy-absorbing structure from occupying too much space, and avoiding interference between the energy-absorbing structure and the inclined beam, thereby reducing the difficulty of assembling the energy-absorbing structure and the first beam and improving assembly efficiency.

[0012] According to some embodiments of this application, the battery device further includes: a connecting beam, one end of which is connected to an inclined beam, and the other end of which extends toward and is adjacent to a first beam disposed opposite to it, and is connected to the first beam.

[0013] In the above technical solution, by setting up the connecting beam, a support structure can be further set up in the corner area defined by the connection between the inclined beam and the first beam. This not only improves the connection strength of the corner area of ​​the battery device, but also plays a role in sealing the enclosure. More importantly, the setting up of the connecting beam can further enrich the mechanical transmission path. The collision energy transmitted from the middle beam to the inclined beam can be further transmitted to the first beam located at both ends of the first beam on the side of the collision through the connecting beam or the inclined beam itself. The transmission path is richer, the mechanical transmission effect is better, the collision energy dispersion effect is better, the probability of deformation of the battery device is lower, and the protection effect of the battery cells is better.

[0014] According to some embodiments of this application, multiple connecting beams are provided, and the multiple connecting beams are arranged sequentially between the first beam and the inclined beam.

[0015] In the above technical solution, the number of connecting beams is not limited to one. Multiple connecting beams can be set within the triangular gap to further improve the structural strength of the battery device, especially to effectively improve the structural strength of the corner area of ​​the battery device. While improving the mechanical transmission effect, the higher structural strength of the corner area can also specifically enhance the corner area structure for offset collisions, especially small offset collisions, so as to improve the safety and reliability of the vehicle.

[0016] According to some embodiments of this application, the extension direction of the connecting beam and the extension direction of the intermediate beam connected thereto have an acute angle.

[0017] In the above technical solution, the extension direction of the connecting beam is not specifically limited in this application. The extension direction of the connecting beam can be parallel to the extension direction of the intermediate beam, or it can have an acute angle with the extension direction of the intermediate beam, so that the connecting beam can be connected to the inclined beam at one end within the triangular gap, and connected to the first beam at a position away from the partition beam connected to the inclined beam, so that the collision energy transmitted from the inclined beam and the connecting beam to the first beam can be transmitted from different positions, and there is a certain distance between the two transmission positions, so as to improve the stress on the first beam at both ends of the first beam on the impact side, reduce the probability of deformation of the first beam, and improve the structural strength and structural stability of the battery device.

[0018] According to some embodiments of this application, the battery device further includes: a tie beam connected between the intermediate beam and a partition beam adjacent to the intermediate beam, and / or a tie beam connected between the inclined beam and a partition beam adjacent to the inclined beam.

[0019] In the above technical solution, when the tie beam is located between the intermediate beam and the partition beam, a collapse structure is also provided on the tie beam. While enriching the mechanical transmission path through the tie beam, the tie beam can collapse and absorb energy synchronously with the energy absorption structure to improve the collapse energy absorption effect. When the tie beam is located between the partition beam and the inclined beam, the collision energy transmitted from the intermediate beam to the inclined beam can be transmitted to the first connected beam through the inclined beam itself, to the first connected beam through the connecting beam, and to the partition beam through the tie beam, so as to enrich the mechanical transmission path and enable the collision energy borne by the inclined beam to be dispersed through more mechanical transmission paths, thereby improving the dispersion uniformity and reducing the deformation of the battery device.

[0020] According to some embodiments of this application, multiple tie beams are provided, and the multiple tie beams are arranged sequentially in the extension direction of the intermediate beam and / or the inclined beam.

[0021] In the above technical solution, there are multiple tie beams, and the tie beams on both sides of the length centerline of the middle beam are symmetrically arranged relative to the length centerline. This ensures that the number of tie beams further arranged on the two inclined beams at both ends of the middle beam is consistent. Under the premise of enriching the mechanical transmission path, the symmetrical arrangement of tie beams can make the distribution of collision energy transmitted from the middle beam to both ends more uniform. This ensures that the first beam at both ends of the middle beam bears similar collision energy, improves the stress environment of the battery device, avoids bending and torsional stress, and further reduces the deformation of the battery device.

[0022] According to some embodiments of this application, the extension direction of the tie beam forms an angle with the extension direction of the intermediate beam connecting the tie beam; and / or

[0023] The extension direction of the tie beam forms an angle with the extension direction of the inclined beam connecting the tie beam.

[0024] In the above technical solution, the extension direction of the tie beam is not specifically limited in this application. The extension direction of the tie beam can be at an angle with the extension direction of the intermediate beam, so that the tie beam can be connected to the inclined beam at one end and connected to the partition beam at a position away from the inclined beam within the triangular gap defined by the partition beam and the inclined beam. This allows the collision energy transmitted from the inclined beam and the tie beam to the partition beam to be transmitted from different positions, and there is a certain distance between the two transmission positions. This improves the stress on the partition beam opposite to the first beam on the impacted side, reduces the probability of deformation of the collision beam, and improves the structural strength and structural stability of the battery device.

[0025] Secondly, this application proposes a vehicle chassis, including the battery device described in the above embodiments.

[0026] According to some embodiments of this application, the chassis of the vehicle further includes a floor, at least a portion of which covers the accommodating space and forms a cover for the battery device.

[0027] Thirdly, this application proposes a vehicle, including: the chassis of the vehicle in the above embodiments.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0031] Figure 2This is a schematic diagram of a battery device according to an embodiment of this application;

[0032] Figure 3 This is a split schematic diagram of a battery device according to an embodiment of this application;

[0033] Figure 4 This is a schematic diagram showing the arrangement of the first beam, partition beam, connecting beam, tie beam, and energy-absorbing structure according to an embodiment of this application.

[0034] Figure 5 This is a schematic diagram of a battery cell according to an embodiment of this application.

[0035] Figure label:

[0036] The vehicle's chassis is 100.

[0037] Battery unit 110, first compartment 120, second compartment 130,

[0038] First beam 10, middle beam 11, inclined beam 12

[0039] 20 partition beams, 30 energy-absorbing structure, 40 connecting beams, 50 tie beams, and 60 floor panels.

[0040] Battery cell 200, vehicle 300, motor 400, controller 500.

[0041] Threshold beam 10a, front beam 10b, rear beam 10c.

[0042] First direction X, second direction Y. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0045] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0048] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0049] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0051] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0052] In this application, "multiple" means two or more (including two).

[0053] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0054] To improve the integration of the vehicle body and increase the energy density of the battery devices installed on the vehicle, the battery devices can be integrated into the vehicle body, chassis, or hull using a CTB (cell to body) architecture or a CTC (cell to chassis) architecture to improve energy density. This is achieved by integrating the battery devices (energy compartments) into the vehicle body and loading individual battery cells into the battery devices.

[0055] However, vehicles equipped with battery devices are heavier and suffer greater damage in impacts than traditional vehicles. Improving the safety of battery devices and even the entire vehicle has become an urgent technical problem to be solved.

[0056] In existing technologies, a crash beam is typically installed outside the battery pack casing, with an energy-absorbing structure at the connection between the crash beam and the casing. This type of structure primarily utilizes the strength of the crash beam to protect the battery; that is, in the event of a vehicle collision, the crash beam absorbs the impact, reducing the deformation of the casing. However, this method is not effective at absorbing the energy generated by the collision. The energy can still be transferred through the crash beam and casing to the individual battery cells inside the casing, potentially leading to a situation where the casing sustains less damage while the individual battery cells suffer greater damage. In reality, this method offers poor protection for the individual battery cells.

[0057] Based on the above considerations, in order to improve energy density and integration, this application proposes a battery device, and further improves the protection effect of battery cells by setting a first beam and an energy-absorbing structure on the battery device, thereby improving the safety and reliability of the vehicle.

[0058] It should be noted that the length direction of the battery device is usually the same as the vehicle's direction of travel, i.e., the first direction in this application is the X direction of the vehicle, and the width direction of the battery device is usually the width direction (Y direction) of the vehicle. At least one of the first beams opposite in the first direction and the first beams opposite in the second direction is constructed to include a middle beam and an inclined beam. An energy-absorbing structure is provided between the middle beam and the partition beam, which can further absorb the energy generated by the collision, reduce the damage to the battery cells caused by the deformation of the battery device, and enrich the mechanical transmission path, so that the collision energy can be transmitted along the first beam and the partition beam, further improving the protection effect.

[0059] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 300 provided in some embodiments of this application. The vehicle 300 can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc.

[0060] The vehicle body has a chassis 100, and the chassis 100 is sequentially provided with a first compartment 120, a battery unit 110, and a second compartment 130. Battery units 200 can be housed in the battery unit 110. A motor 400, a controller 500, etc., can be housed in either the first compartment 120 or the second compartment 130. The battery units 200 in the battery unit 110 can provide power to the vehicle 300; for example, the battery can serve as the operating power source for the vehicle 300. The vehicle 300 may also include a controller 500 and a motor 400. The controller 500 is used to control the battery to supply power to the motor 400, for example, to meet the power needs of the vehicle 300 during starting, navigation, and driving.

[0061] In some embodiments of this application, the battery can not only serve as the operating power source for the vehicle 300, but also as the driving power source for the vehicle 300, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 300.

[0062] refer to Figure 3 , Figure 3 This is a schematic diagram of a battery device 110 provided in some embodiments of this application. A first beam 10 defines a frame, and a partition beam 20 extending in a first direction and a second direction is provided inside the frame to define a plurality of chambers inside the frame, each chamber may contain one or more battery cells 200.

[0063] There can be multiple battery cells 200, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 200 are connected in both series and parallel configurations. Multiple battery cells 200 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 200 is housed within a receiving cavity. Alternatively, the battery can be composed of multiple battery cells 200 first connected in series, parallel, or in a mixed configuration to form a battery module, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the battery device 110. The battery may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 200.

[0064] Each battery cell 200 can be a secondary battery cell 200 or a primary battery cell 200; it can also be a lithium-sulfur battery cell 200, a sodium-ion battery cell 200, or a magnesium-ion battery cell 200, but is not limited to these. The battery cell 200 can be cylindrical, flat, cuboid, or other shapes.

[0065] A battery cell of size 200 refers to the smallest unit that makes up a battery. For example... Figure 5 As shown, the battery cell 200 may include an end cap, a housing, an electrode assembly, and other functional components. The end cap is a component that closes onto the opening of the housing to isolate the internal environment of the battery cell 200 from the external environment. The shape of the end cap may be adapted to the shape of the housing to fit the housing. Optionally, the end cap may be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is less prone to deformation under pressure and impact, giving the battery cell 200 higher structural strength and improved safety performance. Functional components such as electrode terminals may be provided on the end cap. The electrode terminals can be used to electrically connect to the electrode assembly for outputting or inputting electrical energy into the battery cell 200. In some embodiments, the end cap may also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 200 reaches a threshold. The end cap can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this.

[0066] In some embodiments, an insulating element may be provided on the inner side of the end cap. The insulating element can be used to isolate the electrical connection components within the housing from the end cap to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0067] The housing is a component used to cooperate with the end cap to form the internal environment of the battery cell 200, wherein the formed internal environment can accommodate electrode components, electrolyte, and other components. The housing and end cap can be independent components, with an opening provided on the housing. The end cap closes the opening to form the internal environment of the battery cell 200. Alternatively, the end cap and housing can be integrated. Specifically, the end cap and housing can form a common connecting surface before other components are inserted into the housing, and the end cap closes the housing when it is necessary to encapsulate the interior. The housing can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing can be determined according to the specific shape and size of the electrode components. The housing can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this.

[0068] The electrode assembly is the component in the battery cell 200 where electrochemical reactions occur. The casing may contain one or more electrode assemblies. The electrode assembly is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly, while the portions without active material each constitute a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0069] The following is for reference. Figures 1-5 The present invention describes a battery device 110, a vehicle chassis 100, and a vehicle 300 according to embodiments of the present invention.

[0070] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, an embodiment of this application proposes a battery device 110.

[0071] The battery device 110 in this embodiment includes: a first beam 10 and a partition beam 20; there are multiple first beams 10 connected to form an accommodating space (e.g., arranged in pairs to form a rectangular accommodating space), the accommodating space is used to accommodate a battery cell 200, there are multiple partition beams 20 disposed within the battery device 110, at least one partition beam 20 is connected at both ends to two oppositely arranged first beams 10, when there are multiple partition beams 20, the multiple partition beams 20 are spaced apart between at least one pair of opposite first beams 10.

[0072] Specifically, the first beam 10 may include a first longitudinal beam 10a extending along a first direction and a first transverse beam 10b extending along a second direction. The first direction is the length direction (X direction, longitudinal) of the vehicle 300, and the second direction is the width direction (Y direction, transverse) of the vehicle 300, so as to define a generally rectangular accommodating space by the first transverse beam 10b and the first longitudinal beam 10a, and a partition beam 20 is provided inside the accommodating space. The partition beam 20 may include a second longitudinal beam and a second transverse beam. The second longitudinal beam extends along the first direction and is arranged opposite to the two first transverse beams 10b in the second direction. Extending in the first direction and disposed opposite to the two first crossbeams 10b in the first direction, a plurality of accommodating cavities are defined inside the battery device 110. Each accommodating cavity is adapted to accommodate at least one battery cell 200. Thus, a plurality of force transmission paths extending in the first direction and a plurality of force transmission paths extending in the second direction are defined by the first beam 10 and the partition beam 20. When subjected to collision energy in the first direction or the second direction, the collision energy can be transmitted through the first beam 10 on the impacted side to the partition beam 20 disposed adjacent to it, and then to the first beam 10 on the opposite side and the adjacent side, so as to disperse the collision energy.

[0073] For example, when the first crossbeam 10b on the front side is impacted, the impact energy can be transmitted to the second longitudinal beam connected to its end, and then transmitted to the first crossbeam 10b on the rear side through the second longitudinal beam. During the process of transmitting the impact energy, the second longitudinal beam will further disperse the impact energy to the second crossbeam, and then transmit it to the first longitudinal beam 10a through the second crossbeam, so as to effectively disperse the impact energy.

[0074] It should be noted that the battery device 110 can be located in the middle area of ​​the vehicle chassis 100, and the battery device 110 can be provided with a first compartment 120 and a second compartment 130 on both sides in the first direction. The first compartment 120 and the second compartment 130 can be constructed as engine compartment, luggage compartment, etc., for example, they can be used to house the motor 400 and the controller 500. As part of the vehicle chassis 100, the battery device 110 may be subjected to collision impacts from the first direction and the second direction during the driving of the vehicle 300. Especially when subjected to high-speed collisions, the collision energy is large, and the protection effect of the above-mentioned mechanical dispersion path is limited. The first beam 10 on the side of the collision is prone to deformation and intrusion into the battery cell 200. Therefore, how to reduce the transmission of collision energy to the battery cell 200, reduce the deformation of the battery device 110 to reduce the intrusion into the battery cell 200, improve the structural strength and stability of the battery device 110, and effectively improve the safety and stability of the vehicle 300 has become an urgent technical problem to be solved.

[0075] Based on this, this application further improves the structure of the first beam 10, see [link to relevant documentation]. Figure 4As shown, at least one first beam 10 includes: a middle beam 11 and inclined beams 12 located at both ends of the middle beam 11. One end of the inclined beam 12 is connected to the middle beam 11, and the other end extends toward and is connected to the partition beam 20 which is opposite to and adjacent to it.

[0076] Wherein, at least one first beam 10 including a middle beam 11 and inclined beams 12 located at both ends of the middle beam 11 means that two first transverse beams 10b opposite each other in a first direction, two first longitudinal beams 10a opposite each other in a second direction, and one, two, three or four of the four beams can be constructed as a structure including the middle beam 11 and the inclined beams 12.

[0077] Furthermore, it should be noted that the battery device 110 is not limited to a rectangular frame outline. The battery device 110 can also be constructed as a hexagon, octagon or other outlines. Correspondingly, the multiple beam structures of the battery device 110 are defined as first beams 10, and at least one first beam 10 is formed as a structure including an intermediate beam 11 and an inclined beam 12.

[0078] For example, a first crossbeam 10b is constructed as a middle beam 11 and an inclined beam 12, wherein the middle beam 11 is disposed opposite to the second crossbeam and there is a gap between them, and an inclined beam 12 is connected to each end of the middle beam 11. The inclined beam 12 extends toward the second crossbeam and is connected to the end of the second crossbeam and the first longitudinal beam 10a. Or a first longitudinal beam 10a is constructed as a middle beam 11 and an inclined beam 12, wherein the middle beam 11 is disposed opposite to the second longitudinal beam and there is a gap between them, and an inclined beam 12 is connected to each end of the middle beam 11. The inclined beam 12 extends toward the second longitudinal beam and is connected to the end of the second longitudinal beam and the first crossbeam 10b.

[0079] Furthermore, when the first crossbeam 10b is subjected to a collision, the collision energy will cause the intermediate beam 11 to deform toward the second crossbeam. However, the gap between the intermediate beam 11 and the second crossbeam connected to the end of the first longitudinal beam 10a can form a deformation space. The deformation of the first crossbeam 10b will only intrude into the deformation space, which can reduce the probability of the first crossbeam 10b intruding into the battery cell 200 when it deforms. At the same time, the inclined beam 12 and the second crossbeam form a triangular support structure, which can strengthen the structural strength and support strength of the corner area where the first crossbeam 10b and the first longitudinal beam 10a are connected. When the intermediate beam 11 deforms, the collision energy can be transferred to the inclined beam 12, and the collision force can be guided to the end of the first crossbeam 10b through the inclined beam 12, so as to be transferred to the end of the first longitudinal beam 10a and the end of the partition beam 20. This can also reduce the collision energy directly transmitted to the battery cell 200 and improve the protection effect of the battery cell 200.

[0080] Similarly, when the first longitudinal beam 10a is subjected to a collision, the collision energy will cause the intermediate beam 11 to deform toward the second longitudinal beam. However, the gap between the intermediate beam 11 and the second longitudinal beam connected to the end of the first crossbeam 10b can form a deformation space. The deformation of the first longitudinal beam 10a will only intrude into the deformation space, which can reduce the probability of the first longitudinal beam 10a deforming and intruding into the battery cell 200. At the same time, the inclined beam 12 and the second longitudinal beam form a triangular support structure, which can strengthen the structural strength and support strength of the corner area where the first longitudinal beam 10a and the first crossbeam 10b are connected. When the intermediate beam 11 deforms, the collision energy can be transferred to the inclined beam 12, and the collision force can be guided to the end of the first longitudinal beam 10a through the inclined beam 12, so as to be transferred to the end of the first crossbeam 10b and the end of the partition beam 20. This can also reduce the collision energy directly transmitted to the battery cell 200 and improve the protection effect of the battery cell 200.

[0081] According to the battery device 110 of this application embodiment, by setting a first beam 10 and a partition beam 20, and making at least one first beam 10 include a middle beam 11 and an inclined beam 12, a triangular support structure can be formed between the inclined beam 12 and the partition beam 20, and the gap between the middle beam 11 and the adjacent partition beam 20 can be formed as a deformation space. This strengthens the structural strength and support strength of the corner area where the first beams 10 are connected, thereby reducing the deformation of the battery device 110. At the same time, it can also guide the collision energy to be transmitted to the end of the first beam 10, so as to guide the collision energy to dissipate through multiple first beams 10 and partition beams 20, and use the deformation space to absorb the deformation of the middle beam 11, thereby reducing the probability of deformation intruding into the accommodating cavity where the battery cell 200 is located, and improving the protection effect of the battery cell 200.

[0082] Combination Figure 3 and Figure 4 As shown, according to some embodiments of this application, the battery device 110 further includes an energy-absorbing structure 30, which is disposed between the partition beam 20 and the intermediate beam 11 and connected to the partition beam 20 and the intermediate beam 11.

[0083] Specifically, one end of the inclined beam 12 is connected to the intermediate beam 11, and the other end of the inclined beam 12 is connected to the partition beam 20, which can form a gap between the intermediate beam 11 and the adjacent partition beam 20. This gap is the aforementioned deformation space. An energy-absorbing structure 30 is further provided in the deformation space. When the intermediate beam 11 is subjected to an impact, the impact energy can be transferred to the energy-absorbing structure 30 through the intermediate beam 11. When the intermediate beam 11 deforms, the energy-absorbing structure 30 can collapse and deform to absorb the impact energy, which can further improve the protection effect, reduce the probability of deformation intruding into the accommodating space where the battery cell 200 is located, and improve the protection effect for the battery cell 200.

[0084] For example, when the first crossbeam 10b is formed as a middle beam 11 and an inclined beam 12, an energy-absorbing structure 30 is provided between the first crossbeam 10b and the second crossbeam disposed adjacent thereto. When the first longitudinal beam 10a is formed as a middle beam 11 and an inclined beam 12, an energy-absorbing structure 30 is provided between the first longitudinal beam 10a and the second longitudinal beam disposed adjacent thereto.

[0085] The energy-absorbing structure 30 can be constructed as a traditional energy-absorbing box with a collapse groove structure, or it can be further filled with energy-absorbing material.

[0086] According to some embodiments of this application, the length dimension L1 of the intermediate beam 11 and the length dimension L2 of the energy-absorbing box satisfy the following condition: 0.3≤L2 / L1≤1.

[0087] For example, the length of the energy-absorbing box can be 0.3 times, 0.4 times, 0.5 times, 0.6 times, 0.7 times, 0.8 times, 0.9 times, 1 times, etc., the length of the intermediate beam 11.

[0088] This makes the length of the energy-absorbing structure 30 more reasonable, ensuring that its collision energy absorption effect meets the usage requirements while reducing the difficulty of arranging the energy-absorbing structure 30, preventing it from taking up too much space, and avoiding interference between the energy-absorbing structure 30 and the inclined beam 12. This reduces the difficulty of assembling the energy-absorbing structure 30 and the first beam 10 and improves assembly efficiency.

[0089] like Figure 3 and Figure 4 As shown, according to some embodiments of this application, the battery device 110 further includes: a connecting beam 40, one end of which is connected to the inclined beam 12, and the other end of which extends toward and is adjacent to the first beam 10 and is connected to the first beam 10.

[0090] In other words, one end of the connecting beam 40 is connected to the inclined beam 12, and the other end of the connecting beam 40 is connected to the first beam 10 located at one end of the length of the intermediate beam 11.

[0091] Specifically, the inclined beam 12 is connected to the partition beam 20 provided adjacent to the intermediate beam 11, and the inclined beam 12 is also connected to another first beam 10, so that a triangular gap is formed between the inclined beam 12 and the first beam 10, and a connecting beam 40 can be further provided in the gap.

[0092] For example, the first crossbeam 10b is formed as a middle beam 11 and an inclined beam 12. After the inclined beam 12 is connected to the first longitudinal beam 10a, the middle beam 11 of the first longitudinal beam 10a and the first crossbeam 10b are separated, and a triangular gap is defined between the inclined beam 12 and the first longitudinal beam 10a. When the first longitudinal beam 10a is formed as a middle beam 11 and an inclined beam 12, after the inclined beam 12 is connected to the first crossbeam 10b, the middle beam 11 of the first longitudinal beam 10a is separated, and a triangular gap is defined between the inclined beam 12 and the first crossbeam 10b.

[0093] Therefore, by setting the connecting beam 40, a support structure can be further set in the corner area defined by the connection between the inclined beam 12 and the first beam 10. While improving the connection strength of the corner area of ​​the battery device 110, it can also play a role in sealing the battery device. More importantly, the setting of the connecting beam 40 can further enrich the mechanical transmission path. The collision energy transmitted from the intermediate beam 11 to the inclined beam 12 can be further transmitted to the first beam 10 located at both ends of the first beam 10 on the side of the collision through the connecting beam 40 or the inclined beam 12 itself. The transmission path is richer, the mechanical transmission effect is better, the collision energy dispersion effect is better, the probability of deformation of the battery device 110 is lower, and the protection effect of the battery cell 200 is better.

[0094] According to some embodiments of this application, multiple connecting beams 40 are provided, and the multiple connecting beams 40 are arranged sequentially between the first beam 10 and the inclined beam 12.

[0095] In other words, the number of connecting beams 40 is not limited to one. Multiple connecting beams 40 can be set within the aforementioned triangular gap to further improve the structural strength of the battery device 110. In particular, it can effectively improve the structural strength of the corner area of ​​the battery device 110, improve the mechanical transmission effect, and the higher structural strength of the corner area can also specifically enhance the corner area structure for offset collisions, especially small offset collisions (the collision area is less than 25% of the corresponding direction dimension), so as to improve the safety and reliability of the vehicle 300.

[0096] According to some embodiments of this application, the extension direction of the connecting beam 40 and the extension direction of the intermediate beam 11 connected thereto have an acute angle.

[0097] In other words, the extension direction of the connecting beam 40 can have an acute angle with the extension direction of the intermediate beam 11, so that the connecting beam 40 can be connected to the inclined beam 12 at one end and the adjacent first beam 10 at the other end within the triangular gap, and the other end of the connecting beam 40 is relatively far away from the connection position of the inclined beam 12 and the partition beam 20, so that the collision energy transmitted to the first beam 10 by the inclined beam 12 and the connecting beam 40 can be transmitted from different positions, and there is a certain distance between the two transmission positions, so as to improve the stress on the first beam 10 at both ends of the first beam 10 on the impact side, reduce the probability of deformation of the first beam 10, and improve the structural strength and structural stability of the battery device 110.

[0098] exist Figure 3 and Figure 4 In the embodiments shown, according to some embodiments of this application, the battery device 110 further includes: a tie beam 50, which is connected between the intermediate beam 11 and the partition beam 20 adjacent to the intermediate beam 11, and / or the tie beam 50 is connected between the inclined beam 12 and the partition beam 20 adjacent to the inclined beam 12.

[0099] Specifically, the tie beam 50 can be located between the intermediate beam 11 and the partition beam 20, or between the inclined beam 12 and the partition beam 20, or both the intermediate beam 11 and the partition beam 20 and the inclined beam 12 and the partition beam 20 can be equipped with tie beams 50.

[0100] When the tie beam 50 is located between the intermediate beam 11 and the partition beam 20, a collapse structure is also provided on the tie beam 50. While enriching the mechanical transmission path through the tie beam 50, the tie beam 50 can collapse and absorb energy synchronously with the energy absorption structure 30 to improve the collapse and energy absorption effect. When the tie beam 50 is located between the partition beam 20 and the inclined beam 12, the collision energy transmitted from the intermediate beam 11 to the inclined beam 12 can be transmitted to the connected first beam 10 through the inclined beam 12 itself, to the connected first beam 10 through the connecting beam 40, and to the partition beam 20 through the tie beam 50 to enrich the mechanical transmission path. This allows the collision energy borne by the inclined beam 12 to be dispersed through more mechanical transmission paths, improving the dispersion uniformity and reducing the deformation of the battery device 110.

[0101] like Figure 4 As shown, according to some embodiments of this application, multiple tie beams 50 are provided, and the multiple tie beams 50 are arranged sequentially in the extension direction of the intermediate beam 11.

[0102] Specifically, the extension direction of the intermediate beam 11 is the length direction of the intermediate beam 11, and multiple tie beams 50 are arranged sequentially in the extension direction of the intermediate beam 11, which can improve the structural strength and the uniformity of stress distribution. In some embodiments, there are multiple tie beams 50, and the multiple tie beams 50 located on both sides of the length centerline of the intermediate beam 11 can be symmetrically arranged relative to the length centerline, so that the number of tie beams 50 further arranged on the two inclined beams 12 at both ends of the intermediate beam 11 is consistent. Under the premise of enriching the mechanical transmission path, the symmetrical arrangement of tie beams 50 can make the distribution of collision energy transmitted from the intermediate beam 11 to both ends more uniform, so that the first beams 10 at both ends of the intermediate beam 11 bear similar collision energy, improve the stress environment of the battery device 110, avoid bending and torsional stress, and further reduce the deformation of the battery device 110.

[0103] According to some embodiments of this application, the extension direction of the tie beam 50 is at an angle to the extension direction of the intermediate beam 11 connecting the tie beam 50, and / or the extension direction of the tie beam 50 is at an angle to the extension direction of the inclined beam 12 connecting the tie beam 50.

[0104] In other words, the extension direction of the tie beam 50 is not specifically limited in this application. The extension direction of the tie beam 50 can be at an angle to the extension direction of the intermediate beam 11, so that the tie beam 50 can be within the triangular gap defined by the partition beam 20 and the inclined beam 12. This allows the collision energy transmitted from the inclined beam 12 and the tie beam 50 to the partition beam 20 to be transmitted from different positions, and there is a certain distance between the two transmission positions. This improves the stress on the partition beam 20 opposite to the first beam 10 on the impacted side, reduces the probability of deformation of the collision beam, and improves the structural strength and structural stability of the battery device 110.

[0105] The tie beam 50 can also be at an angle to the extension direction of the inclined beam 12, so as to divide multiple energy-absorbing cavities between the partition beam 20 and the inclined beam 12, thereby improving the collision energy absorption effect.

[0106] It should be noted that the extension direction of the tie beam 50 and the extension direction of the intermediate beam 11 connecting the tie beam 50 preferably have a right angle, and the extension direction of the tie beam 50 and the extension direction of the inclined beam 12 connecting the tie beam 50 preferably have a right angle.

[0107] like Figure 1 As shown, this application proposes a vehicle chassis 100, including: the battery device 110 in the above embodiment.

[0108] like Figure 3 As shown, according to some embodiments of this application, the chassis 100 of the vehicle further includes a floor 60, at least a portion of which covers the accommodating space and forms a cover for the battery device 110.

[0109] Therefore, the top cover can be combined with the floor 60, which can simplify the structure of the vehicle chassis 100, achieve a high degree of integration between the battery device and the vehicle chassis 100, and eliminate the need for a separate top cover for the battery device, thereby reducing the overall quantity and cost.

[0110] like Figure 1 As shown, this application proposes a vehicle 300, including: the chassis 100 of the vehicle in the above embodiment.

[0111] See Figure 3 and Figure 4 As shown, multiple first beams 10 surround the battery device 110. The first beams 10 may include first cross beams 10b and first longitudinal beams 10a. At least one of the two first cross beams 10b is constructed as an anti-collision structure including a middle beam 11 and an inclined beam 12, and an energy-absorbing structure 30 may be further provided. The two first longitudinal beams 10a may be formed as threshold beams. Of course, the two first longitudinal beams 10a may also be constructed as an anti-collision structure of middle beam 11 and inclined beam 12. A connecting beam 40 is provided between the inclined beam 12 and the first beam 10, a tie beam 50 is provided between the inclined beam 12 and the partition beam 20, or between the middle beam 11 and the partition beam 20, so as to effectively buffer collision energy, reduce self-deformation, effectively protect the battery cell 200, and reduce intrusion into the accommodating space.

[0112] The battery device 110, the chassis 100 of the vehicle, and other components and operations of the vehicle 300 according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0114] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: The first beam (10) is a plurality of the first beams (10), and the plurality of the first beams (10) are connected to form an accommodating space for accommodating a battery cell (200). A partition beam (20), wherein there are multiple partition beams (20), the partition beams (20) are disposed within the accommodating space, and at least one partition beam (20) has its two ends connected to two oppositely disposed first beams (10); wherein, At least one of the first beams (10) includes: a middle beam (11) and inclined beams (12) located at both ends of the middle beam (11), one end of the inclined beam (12) being connected to the middle beam (11) and the other end extending toward and adjacent to the partition beam (20) thereon, and being connected to the partition beam (20).

2. The battery device according to claim 1, characterized in that, The battery device further includes an energy-absorbing structure (30), which is disposed between the partition beam (20) and the intermediate beam (11) and is connected to the partition beam (20) and the intermediate beam (11).

3. The battery device according to claim 2, characterized in that, The length dimension L1 of the intermediate beam (11) and the length dimension L2 of the energy-absorbing structure (30) satisfy the following condition: 0.3≤L2 / L1≤1.

4. The battery device according to claim 1, characterized in that, The battery device further includes a connecting beam (40), one end of which is connected to the inclined beam (12), and the other end of which extends toward and is adjacent to the first beam (10) and is connected to the first beam (10).

5. The battery device according to claim 4, characterized in that, Multiple connecting beams (40) are provided, and the multiple connecting beams (40) are arranged sequentially between the first beam (10) and the inclined beam (12).

6. The battery device according to claim 4, characterized in that, The extension direction of the connecting beam (40) and the extension direction of the inclined beam (12) connected thereto have an acute angle.

7. The battery device according to claim 1, characterized in that, The battery device further includes: a tie beam (50) connecting the intermediate beam (11) and the partition beam (20) adjacent to the intermediate beam (11), and / or The tie beam (50) is connected between the inclined beam (12) and the partition beam (20) adjacent to the inclined beam (12).

8. The battery device according to claim 7, characterized in that, Multiple tie beams (50) are provided, and the multiple tie beams (50) are arranged sequentially in the extension direction of the intermediate beam (11) and / or the inclined beam (12).

9. The battery device according to claim 7, characterized in that, The extension direction of the tie beam (50) forms an angle with the extension direction of the intermediate beam (11) connecting the tie beam (50); and / or The extension direction of the tie beam (50) forms an angle with the extension direction of the inclined beam (12) connecting the tie beam (50).

10. A chassis for a vehicle, characterized in that, include: The battery device according to any one of claims 1-9.

11. The chassis (100) of the vehicle according to claim 10, characterized in that, The chassis (100) further includes a floor (60), at least a portion of which covers the accommodating space and forms a cover for the battery device.

12. A vehicle, characterized in that, include: The chassis (100) of the vehicle as described in claim 10 or 11.

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