Battery device and vehicle

Abstract

A battery device (100) and a vehicle (200). The battery device (100) comprises a first plate (10), a second plate (20), battery cells (30) and support members (40), wherein the first plate (10) and the second plate (20) are arranged opposite each other in a first direction; the battery cells (30) are arranged between the first plate (10) and the second plate (20); the support members (40) extend in the first direction; the support members (40) are located between the first plate (10) and the second plate (20); and the support members (40) are arranged closer to the second plate (20) than the battery cells (30).

Description

Battery device and vehicle

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to Ningde era (Shanghai) intelligent technology Co., Ltd. on January 17, 2025, filed a patent application entitled "Battery device and vehicle", Chinese patent application number "202520125148.1". TECHNICAL FIELD

[0003] The present application relates to the technical field of battery, in particular to a battery device and a vehicle. BACKGROUND

[0004] In related technologies, when the battery device bears impact load at the bottom (such as bottom scratching, stone hitting, etc.), the load will be directly transmitted to the battery monomer inside the battery device through the bottom guard plate, which has certain safety hazards. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a battery device with higher safety.

[0006] The present application further provides a vehicle using the above battery device.

[0007] The present application provides a battery device, comprising: a first plate, a second plate, a battery monomer and a support, the first plate and the second plate are oppositely arranged in a first direction, the battery monomer is arranged between the first plate and the second plate, the support extends along the first direction, the support is located between the first plate and the second plate, and the support is arranged adjacent to the second plate compared with the battery monomer.

[0008] According to the battery device of the present application, by arranging the support between the first plate and the second plate, and arranging the support adjacent to the second plate compared with the battery monomer, when the second plate bears impact load, the impact load can be preferentially transmitted to the support, and further transmitted outward through the support, reducing the probability of the impact load being directly transmitted to the battery monomer through the second plate, reducing the probability of damage or failure of the battery device under the condition of bottom support, and improving the safety and reliability of the battery device.

[0009] According to some embodiments of the present application, the battery device further comprises: a third plate, the third plate surrounds the first plate and the second plate to define a placement space, the battery monomer and the support are arranged in the placement space.

[0010] According to some embodiments of the present application, the support comprises: a first support and a second support, the first support is arranged between adjacent battery monomers, and the second support is arranged between the third plate and the battery monomer.

[0011] According to some embodiments of the present application, the battery cells are arranged in an array along a first plane perpendicular to the first direction, and in the arrangement direction, a first accommodation gap is defined between every four battery cells that are adjacent in a row and in a column, and a first support is arranged in each first accommodation gap.

[0012] According to some embodiments of the present application, the battery cell comprises a shell and an electrode assembly arranged in the shell, and four corner regions of the shell are configured to be rounded to define the first accommodation gap.

[0013] According to some embodiments of the present application, a second accommodation gap is defined between the corner region of the battery cell and the third plate, and a second support is arranged in each second accommodation gap.

[0014] According to some embodiments of the present application, the support has an outer diameter of 5mm-20mm.

[0015] According to some embodiments of the present application, the support is connected to the first plate and is spaced apart from the second plate.

[0016] According to some embodiments of the present application, a buffer layer is arranged on the second plate, and the buffer layer is at least opposite to the support.

[0017] According to some embodiments of the present application, an electrode terminal is arranged on the first surface of the battery cell, the second surface of the battery cell opposite to the first surface is connected to the first plate, and the first surface is opposite to and spaced apart from the second plate.

[0018] According to some embodiments of the present application, the electrode terminal protrudes from the first surface, and the support is arranged adjacent to the second plate compared to the electrode terminal.

[0019] The present application provides a vehicle comprising the battery device in the above embodiments.

[0020] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0022] FIG. 1 is a schematic view of a battery device according to an embodiment of the present application;

[0023] FIG. 2 is a schematic view of a vehicle according to an embodiment of the present application;

[0024] FIG. 3 is a schematic view of a battery cell according to an embodiment of the present application;

[0025] FIG. 4 is a schematic view of the cooperation of the first plate, the second plate, and the battery cell according to an embodiment of the present application;

[0026] FIG. 5 is a schematic view of the cooperation of the third plate, the battery cell, and the support according to an embodiment of the present application;

[0027] FIG. 6 is a schematic view of the cooperation of the first plate, the second plate, the battery cell, the support, and the cushion according to an embodiment of the present application;

[0028] FIG. 7 is a schematic view of the battery cell and the support according to an embodiment of the present application;

[0029] FIG. 8 is a schematic view of the battery cell and the support according to an embodiment of the present application. Embodiments of the present application

[0030] Embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the description of the present application, identical or similar components are denoted by the same reference numerals throughout the several drawings, and repeated description of the same components is omitted. The embodiments described below are examples for explaining the present application, and are not intended to limit the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] It should be noted that the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. Further, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0033] The battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging the battery cell.

[0034] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0035] The battery device mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells, the plurality of battery cells can form a battery column, and the plurality of battery cells are connected in series, in parallel, or in a mixed connection through a busbar component.

[0036] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells, such as forming a battery column.

[0037] As an example, the battery cell assembly can be a battery module, the battery module is formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0038] In some embodiments, the battery device can be a battery pack, the battery pack includes a box and one or more battery cell assemblies, the battery cell assemblies are accommodated in the box.

[0039] As an example, the battery cell assembly can be a battery module, the battery cell assembly can be accommodated in the box by fixing the battery module in the box.

[0040] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0041] As an example, the box can include a first box and a second box. The first box and the second box are buckled so that an enclosed space is formed inside the box to accommodate the battery cell assembly. Here, enclosed means covered or closed, which can be sealed or unsealed. The first box can be a first plate, and the second box can be defined by a second plate and a third plate surrounding the second plate.

[0042] In some embodiments, the box can be part of the chassis structure of the vehicle. For example, part of the box can be at least part of the floor of the vehicle, or part of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0043] The following embodiments are described for convenience with the electrical equipment being a vehicle as an example.

[0044] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 200 provided by some embodiments of the present application. The vehicle 200 is internally provided with a battery device 100, which can be arranged at the bottom, the head, or the tail of the vehicle 200. The battery device 100 can be used for power supply of the vehicle 200, for example, the battery device 100 can be used as the operating power supply of the vehicle 200.

[0045] The vehicle 200 can further include a controller 400 and a motor 300, the controller 400 being configured to control the battery device 100 to supply power to the motor 300, the motor 300 being configured as a load, for example, to meet the power demand of the vehicle 200 during starting, navigation and driving.

[0046] In some embodiments of the present application, the battery device 100 can not only serve as a power source for the operation of the vehicle 200, but also serve as a driving power source for the vehicle 200, replacing or partially replacing the fuel or natural gas to provide driving power for the vehicle 200.

[0047] Referring to FIG. 2, FIG. 2 is an exploded view of the battery device 100 according to some embodiments of the present application. The battery device 100 includes a box body for accommodating the battery monomer 30.

[0048] The box body is a component for accommodating the battery monomer 30, and provides a placement space for the plurality of battery monomers 30. The box body can adopt various structures. In some embodiments, the box body can include a first plate 10, a second plate 20 and a third plate 50, the third plate 50 being arranged between the first plate 10 and the second plate 20 and forming the box body with the placement space.

[0049] For example, the third plate 50 can be formed as a part of the vehicle body, such as a rocker, a longitudinal beam, a cross beam, etc.

[0050] In the battery device 100, the battery monomer 30 can be one or a plurality of battery monomers 30. If the battery monomer 30 is a plurality of battery monomers 30, the plurality of battery monomers 30 can be connected in series, in parallel or in a mixed manner. The mixed manner means that the plurality of battery monomers 30 are connected in series and in parallel. The plurality of battery monomers 30 can be connected in series, in parallel or in a mixed manner to form a battery module, and the plurality of battery modules can be connected in series, in parallel or in a mixed manner to form an integrated whole and accommodated in the box body. Alternatively, all the battery monomers 30 can be directly connected in series, in parallel or in a mixed manner, and the integrated whole formed by the battery monomers 30 can be accommodated in the box body.

[0051] The battery monomer 30 is the smallest energy unit of the battery device 100, and the battery device 100 includes a plurality of battery monomers 30. The battery monomer 30 includes a shell 31, an end cap and an electrode assembly 32 arranged in the shell 31.

[0052] As shown in FIG. 3, in some embodiments, the battery monomer 30 can include the shell 31, the end cap and the electrode assembly 32. The shell 31 is configured to define a receiving space with a mounting port, and the electrode assembly 32 is arranged in the shell 31.

[0053] For example, the housing 31 may include a base plate and a side plate. The side plate surrounds the periphery of the base plate and defines an accommodating space with a mounting opening. The electrode assembly 32 and other functional components may be disposed in the accommodating space. The end cap is closed on the mounting opening of the housing 31 to isolate the internal environment of the battery cell 30 from the external environment. The shape of the end cap is adapted to the shape of the housing 31. The end cap may be supported by a material with a certain hardness and strength (such as aluminum alloy or carbon fiber plate). The end cap can effectively protect the safety and reliability of the internal components of the housing 31 when squeezed or impacted.

[0054] The housing 31 is an assembly used to fit with the end cap to form the internal environment of the battery cell 30, wherein the formed internal environment can be used to accommodate the electrode assembly 32, electrolyte, and other components. The housing 31 and the end cap can be separate components, and a mounting port can be provided on the housing 31, through which the end cap closes the opening to form the internal environment of the battery cell 30.

[0055] Specifically, the shape of the housing 31 can be determined according to the specific shape and size of the electrode assembly 32. The material of the housing 31 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special restrictions on it.

[0056] Electrode terminals 35 may be further disposed on the end cap or housing 31. The electrode assembly 32 is the component in the battery cell 30 where the electrochemical reaction occurs. The housing 31 may contain one or more electrode assemblies 32. The electrode assembly 32 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets with active material constitute the main body of the electrode assembly 32, and the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or at opposite ends of the main body. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 35 to form a current circuit.

[0057] In related technologies, the battery device 100 is located at the bottom of the vehicle body. During the use of the vehicle 200, the bottom of the battery device 100 may be involved in a collision. After the bottom protection plate bears the impact load, it may directly transfer the impact load to the battery cell 30, thereby causing damage to the battery cell 30 and posing a safety hazard.

[0058] Meanwhile, in some embodiments, the side of the battery cell 30 with the electrode terminal 35 is positioned downwards on the lower part of the vehicle body, and the electrode terminal 35 is directly opposite the underbody protection plate. The impact load of the underbody protection plate may directly act on the electrode terminal 35 and the area where the pressure relief structure is located, which poses a higher safety hazard.

[0059] Based on this, this application proposes a battery device 100, in which a support member 40 is provided inside the battery device 100. The support member 40 can directly transfer the bottom impact load upward, reducing the probability that the impact load will directly act on the battery cell 30, thereby reducing safety hazards and improving safety.

[0060] The battery device 100 and vehicle 200 according to embodiments of this application are described below with reference to Figures 1-8.

[0061] As shown in Figure 1, this application provides a battery device 100.

[0062] Referring to Figures 4 and 6, the battery device 100 includes a first plate 10, a second plate 20, a battery cell 30, and a support member 40. The first plate 10 and the second plate 20 are disposed opposite each other in a first direction. The battery cell 30 is disposed between the first plate 10 and the second plate 20. The support member 40 extends along the first direction and is located between the first plate 10 and the second plate 20. The support member 40 is disposed adjacent to the second plate 20 relative to the battery cell 30.

[0063] It should be noted that the first direction is the height direction (vertical direction).

[0064] Specifically, the first plate 10 and the second plate 20 are arranged opposite to each other in the first direction, and the first plate 10 and the second plate 20 are used to install the battery cell 30. A support member 40 extending along the first direction is provided, and the support member 40 is also provided between the first plate 10 and the second plate 20. The end of the support member 40 facing the second plate 20 is arranged adjacent to the second plate 20 relative to the end of the battery cell 30 that is opposite to the second plate 20.

[0065] It is understandable that the support member 40 is positioned adjacent to the second plate 20 relative to the battery cell 30. When the second plate 20 is impacted, the impact load borne by the second plate 20 will be preferentially transferred to the support member 40, and further transferred outward through the support member 40, such as to the first plate 10, so as to reduce the probability of the impact load being directly transferred to the battery cell 30, thereby reducing the probability of damage to the battery cell 30 after the second plate 20 is impacted, and thus improving the safety and reliability of the battery device 100.

[0066] According to the embodiments of this application, the battery device 100 provides a support member 40 between the first plate 10 and the second plate 20, and the support member 40 is positioned adjacent to the second plate 20 relative to the battery cell 30. When the second plate 20 is subjected to an impact load, the impact load can be preferentially transferred to the support member 40, and the impact load can be further transferred outward through the support member 40. This reduces the probability that the impact load is directly transferred to the battery cell 30 through the second plate 20, thereby reducing the probability of damage or failure of the battery device 100 in the event of a bottoming out, and improving the safety and reliability of the battery device 100.

[0067] As shown in Figures 1, 5 and 7, according to some embodiments of this application, the battery device 100 further includes a third plate 50, which surrounds the first plate 10 and the second plate 20 to define a placement space, and the battery cell 30 and the support member 40 are both disposed within the placement space.

[0068] Specifically, the third plate 50 can define a first aspect perpendicular to the first direction. For example, the third plate 50 includes a first side plate extending along a second direction and a second side plate extending along a third direction. The second direction is the front-back direction, and the third direction is the left-right direction. The first plate 10, the second plate 20, and the third plate 50 enclose a placement space. The battery cell 30 can be placed in the placement space, and the support member 40 is also placed in the placement space and is arranged adjacent to the second plate 20 relative to the battery cell 30 to achieve the above-mentioned protective effect.

[0069] It should be noted that the first side panel can be formed as the sill beam, longitudinal beam and other structures of the vehicle 200, and the corresponding second side panel can be formed as the crossbeam of the vehicle 200, so as to define an installation frame through the third plate 50. The first plate 10 is constructed as a cover plate, on which the seat crossbeam and other structures can be further integrated. The second plate 20 is constructed as a bottom guard plate, which can support the battery cell 30 and install it to the frame, so as to define the energy compartment through the first plate 10, the second plate 20 and the third plate 50, thereby realizing the CTC (Cell to Chassis) architecture, that is, integrating the battery cell 30 into the vehicle chassis.

[0070] It is understandable that by setting up the support member 40 and placing the support member 40 within the placement space, the structural strength of the battery device 100 can be improved while protecting the battery cell 30. In addition, the battery device 100 does not need to set up any other supporting or limiting structures for the battery cell 30 except for the expansion beam structure, which can also improve the energy density of the battery device 100.

[0071] Referring to Figures 5 and 7, according to some embodiments of this application, the support member 40 includes: a first support member 41 and a second support member 42, wherein the first support member 41 is disposed between adjacent battery cells 30, and the second support member 42 is disposed between the third plate 50 and the battery cells 30.

[0072] Specifically, support members 40 can be set between adjacent battery cells 30, and support members 40 can also be set between the third plate 50 and the battery cells 30. That is, the support members 40 include a first support member 41 and a second support member 42. The first support member 41 is set between adjacent battery cells 30, and the second support member 42 is set between the third plate 50 and the battery cells 30, so that the number of support members 40 is more reasonable. Support members 40 can be set on the four corner areas c of each battery cell 30. By setting more support members 40, there are more mechanical transmission paths between the second plate 20 and the support members 40. When bottoming or stone impact occurs, the four support members 40 on the periphery of a single battery cell 30 can all realize mechanical transmission, so as to further improve the protection effect of the battery cell 30 and further reduce the probability of bottom impact directly acting on the battery cell 30.

[0073] It should be noted that the first support member 41 and the second support member 42 may have the same structure or different structures depending on their setting position. Both the first support member 41 and the second support member 42 can be constructed as columnar structural members, such as cylinders, prisms, semi-cylinders, etc.

[0074] As shown in Figures 5, 7 and 8, according to some embodiments of this application, the battery cells 30 are arranged in an array along a first plane perpendicular to the first direction, and in the arrangement direction, a first accommodating gap a is defined between four adjacent battery cells 30 in each row and each adjacent column, and a first support member 41 is provided in each first accommodating gap a.

[0075] Specifically, the second direction and the third direction define the first plane, and the battery cells 30 can be arranged in an array within the first plane, such as: arranged in rows along the second direction, arranged in columns along the third direction, or arranged in rows along a direction that forms an angle with the second direction, or arranged along a direction that forms an angle with the third direction.

[0076] Furthermore, within each column of battery cells 30, a gap is formed between the corner areas c of adjacent battery cells 30, and within each row of battery cells 30, a gap is also formed between adjacent battery cells 30. Thus, every four battery cells 30 between adjacent columns and adjacent rows form a first accommodating gap a, and a first support member 41 is provided in each first accommodating gap a.

[0077] Therefore, in the arrangement direction of the battery cells 30, the first support members 41 can be arranged in an array, and each first support member 41 can form a mechanical transmission path with the second plate 20. More and more evenly distributed mechanical transmission paths can improve the mechanical transmission effect of the second plate 20 after bearing impact load, so that the impact load can be transmitted more evenly through the first support members 41, and can improve the protection effect of the battery cells 30, further reduce the probability of the battery cells 30 being impacted, and improve the safety and reliability of the battery device 100.

[0078] Continuing with reference to Figures 5 and 7, according to some embodiments of this application, the battery cell 30 includes: a housing 31 and an electrode assembly 32 disposed within the housing 31. The four corner regions c of the housing 31 are all constructed with rounded corners to define a first accommodating gap a.

[0079] Specifically, the housing 31 is formed as a square shell, and the housing 31 of the battery cell 30 in this embodiment of the application is different from the existing square shell. The housing 31 in this embodiment of the application has rounded corners in the four corner areas c of the housing 31, so that the space size of the first accommodating gap a defined by the four adjacent battery cells 30 is larger. On the one hand, it can reduce the difficulty of setting the first support member 41. On the other hand, it can select a first support member 41 with more reasonable size and specifications to improve the support and protection effect of the first support member 41.

[0080] It should be noted that the chamfer radius of the corner area c of the square shell in this embodiment is relatively large, which should be distinguished from the small chamfer formed during the processing of the shell 31 in the prior art.

[0081] As shown in Figures 5 and 7, according to some embodiments of this application, a second receiving gap b is defined between the corner region c of the battery cell 30 and the third plate 50, and a second support member 42 is provided in each second receiving gap b.

[0082] Specifically, the third plate 50 includes a first side plate and a second side plate. The first side plate is opposite to the two outermost rows of battery cells 30 and the two outermost columns of battery cells 30. The gap between adjacent battery cells 30 in each column of battery cells 30 is defined by the third plate 50 to form a second accommodating gap b. A second support member 42 can be set in each second accommodating gap b. By setting the second support member 42, multiple second support members 42 can be set on the periphery of the battery cell group formed by multiple battery cells 30, so as to further increase the number of support members 40 and enrich the mechanical transmission path, so as to achieve uniform transmission of impact load.

[0083] At the same time, it can improve the structural strength of the area where the third plate 50 and the adjacent battery cell 30 are located, thereby improving the bottom impact resistance and the side impact resistance.

[0084] According to some embodiments of this application, the outer diameter of the support member 40 is 5mm to 20mm.

[0085] It should be noted that the support member 40 can be constructed as a cylindrical support structure, or as a columnar structure such as a triangular prism or a quadrangular prism, or as a semi-circular column, etc. This application does not make specific limitations. The outer diameter of the support member 40 refers to the outer diameter when the support member 40 is constructed as a circular projected outline, or the diameter of the circumscribed circle when it is not a circular projected outline.

[0086] For example, the outer diameter of the support member 40 can be 5mm, 10mm, 15mm, 20mm, etc.

[0087] It should be noted that the outer diameter of the support member 40 can be reasonably set based on the dimensions of the first accommodating gap a and the second accommodating gap b. The outer diameter is not less than 5mm so that the support member 40 can provide stable and reliable support and protection. The outer diameter is not greater than 20mm so that the dimensions of the support member 40 are more reasonable and the space occupied by the support member 40 in the placement space is more reasonable, so as to take into account the energy density of the battery device 100.

[0088] According to some embodiments of this application, the support member 40 is connected to the first plate 10 and spaced apart from the second plate 20.

[0089] As shown in Figure 6, one end of the support member 40 can be connected to the first plate 10 through various means such as structural adhesive, plug-in connection, and integral molding, while the other end of the support member 40 can be spaced apart from the second plate 20.

[0090] In this way, on the one hand, the impact load of the second plate 20 can be directly transferred to the first plate 10 through the support member 40 to achieve uniform force dissipation and improve the protection effect; on the other hand, it can also increase the buffer space between the second plate 20 and the battery cell 30, and give the second plate 20 a certain elastic movement space.

[0091] As shown in Figure 6, according to some embodiments of this application, a buffer layer 21 is provided on the second plate 20, and the buffer layer 21 is at least opposite to the support member 40.

[0092] Specifically, the buffer layer 21 can be constructed as a foam layer, and the buffer layer 21 can completely cover the second plate 20, or it can cover at least a portion of the second plate 20 and be opposite to the end of the support 40 away from the first plate 10.

[0093] Therefore, by setting the buffer layer 21, on the one hand, the buffer layer 21 can contact the support member 40 to achieve initial buffering of the impact load, reduce the impact, and improve the safety and reliability of the battery device 100. On the other hand, it can alleviate the direct contact between the support member 40 and the second plate 20, so as to reduce the abnormal noise of the battery device 100 during use and improve the user experience.

[0094] It should be noted that the buffer layer 21 can be made of materials such as foam or rubber that have a certain degree of elasticity, are chemically stable, and have good insulation properties.

[0095] According to some embodiments of this application, an electrode terminal 35 is provided on the first surface 33 of the battery cell 30, and the second surface 34 of the battery cell 30 opposite to the first surface 33 is connected to the first plate 10. The first surface 33 and the second plate 20 are opposite to each other and spaced apart.

[0096] Specifically, an electrode terminal 35 is provided on one of the multiple surfaces of the housing 31 of the battery cell 30. The surface with the electrode terminal 35 is defined as the first surface 33, and the surface opposite to the first surface 33 is defined as the second surface 34. In some embodiments, the second surface 34 is connected to the first plate 10, and the first surface 33 is spaced apart from the second plate 20, so that the electrode terminal 35 is positioned downward. The gap between the second plate 20 and the electrode terminal 35 can be used to arrange structures such as adapters and busbars, and can be formed as a pressure relief channel to achieve bottom venting, so as to prevent high temperature and high pressure gas from flowing upward when the battery device 100 experiences thermal runaway, thereby improving safety and reliability.

[0097] It is understandable that in embodiments where the electrode terminal 35 is positioned facing the second plate 20, the second plate 20 is more likely to be directly subjected to impact loads when subjected to impact loads, which could lead to a higher probability of short circuits or other dangerous situations in the battery device 100. In this application, a support member 40 is further provided, with the electrode terminal 35 protruding from the first surface 33 and the support member 40 positioned adjacent to the second plate 20 relative to the electrode terminal 35. This can reduce the probability of direct impact transmission between the second plate 20 and the electrode terminal 35, and can further improve the safety and reliability of the battery device 100 in this embodiment.

[0098] As shown in the accompanying drawings, in the battery device 100 of this application embodiment, a first plate 10, a second plate 20 and a third plate 50 surround a placement space. The first surface 33 of the battery cell 30 is placed downward in the placement space, and the first surface 33 is spaced apart from the second plate 20. One end of the support member 40 is connected to the first plate 10, and the other end is spaced apart from the second plate 20. The other end of the support member 40 is disposed adjacent to the second plate 20 relative to the electrode terminal 35. A buffer layer 21 is further provided between the second plate 20 and the support member 40.

[0099] As shown in Figure 2, this application proposes a vehicle 200, including the battery device 100 in the above embodiment.

[0100] The vehicle 200 according to the embodiments of this application, by using the above-described battery device 100, can improve the safety and reliability of the vehicle 200.

[0101] Other configurations and operations of the battery device 100 and vehicle 200 according to embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0102] 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 this application. 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.

[0103] Although embodiments of this application 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 this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, wherein, The battery device comprises: a first plate (10) and a second plate (20), the first plate (10) and the second plate (20) are oppositely arranged in a first direction; a battery cell (30) arranged between the first plate (10) and the second plate (20); a support (40) extending along the first direction, the support (40) is located between the first plate (10) and the second plate (20), and the support (40) is arranged adjacent to the second plate (20) compared with the battery cell (30).

2. The battery device of claim 1, wherein, The battery device further comprises a third plate (50) surrounding the first plate (10), the second plate (20) to define a placement space, the battery cell (30) and the support (40) are arranged in the placement space.

3. The battery device of claim 2, wherein, The support (40) comprises a first support (41) arranged between adjacent battery cells (30) and a second support (42) arranged between the third plate (50) and the battery cell (30).

4. The battery device of claim 3, wherein, The battery cell (30) is arranged in an array along a first plane perpendicular to the first direction, and in the arrangement direction, four battery cells (30) adjacent in each row and in each column define a first accommodation gap (a), and each first accommodation gap (a) is provided with a first support (41).

5. The battery device of claim 4, wherein, The battery cell (30) comprises a shell (31) and an electrode assembly (32) arranged in the shell (31), and four corner regions (c) of the shell (31) are configured to be rounded to define the first accommodation gap (a).

6. The battery device according to any one of claims 3-5, wherein, The corner region (c) of the battery cell (30) and the third plate (50) define a second accommodation gap (b), and each second accommodation gap (b) is provided with a second support (42).

7. The battery device according to any one of claims 1-6, wherein, The outer diameter of the support (40) is 5mm-20mm.

8. The battery device according to any one of claims 1-7, wherein, The support (40) is connected with the first plate (10) and is arranged spaced apart from the second plate (20).

9. The battery device of any one of claims 1-8, wherein, The second plate (20) is provided with a buffer layer (21), and the buffer layer (21) is at least opposite to the support (40).

10. The battery device of any one of claims 1-9, wherein, The first surface (33) of the battery cell (30) is provided with an electrode terminal (35), the second surface (34) opposite to the first surface (33) of the battery cell (30) is connected with the first plate (10), and the first surface (33) is opposite to and spaced apart from the second plate (20).

11. The battery device of claim 10, wherein, The electrode terminal (35) protrudes from the first surface (33), and the support (40) is arranged adjacent to the second plate (20) compared with electrode terminal (35).

12. A vehicle, wherein, The battery device of any one of claims 1-11. The battery device of any one of claims 1-11.

Images