Battery device and vehicle

Abstract

The utility model discloses a battery device and a vehicle, the battery device comprises a first plate, a second plate, a battery cell and a support member, the first plate and the second plate are oppositely arranged in a first direction, the battery cell is arranged between the first plate and the second plate, the support member extends along the first direction, the support member is located between the first plate and the second plate, and the support member is arranged between the first plate and the second plate. The support member is disposed closer to the second plate than the battery cells. Therefore, the supporting piece is arranged between the first plate and the second plate, and the supporting piece is arranged closer to the second plate than the single battery, so that when the second plate bears the impact load, the impact load can be transmitted to the supporting piece preferentially, and the impact load is further transmitted outwards through the supporting piece; the probability that the impact load is directly transmitted to the battery monomers through the second plate is reduced, so that the probability that the battery device is damaged or fails under the bottom supporting condition is reduced, and the safety and the reliability of the battery device are improved.

Description

Technical Field

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

[0002] In related technologies, when the battery device is subjected to impact loads at the bottom (such as scraping, stone impact, etc.), the load will be directly transferred to the battery cells inside the battery device through the bottom protection plate, which poses certain safety hazards. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a battery device with enhanced safety.

[0004] This application further proposes a vehicle employing the aforementioned battery device.

[0005] In a first aspect, embodiments of this application propose a battery device, including: a first plate, a second plate, a battery cell, and a support member. The first plate and the second plate are disposed opposite each other in a first direction, the battery cell is disposed between the first plate and the second plate, and the support member extends along the first direction, is located between the first plate and the second plate, and is disposed adjacent to the second plate relative to the battery cell.

[0006] According to the battery device of the present application embodiment, by providing a support member between the first plate and the second plate, and by positioning the support member closer to the second plate than the battery cell, the impact load can be preferentially transferred to the support member when the second plate is subjected to an impact load, and the impact load can be further transferred outward through the support member. This reduces the probability that the impact load will be directly transferred to the battery cell through the second plate, thereby reducing the probability of damage or failure of the battery device in the event of a bottoming out, and improving the safety and reliability of the battery device.

[0007] According to some embodiments of this application, the battery device further includes: a third plate, which surrounds the first plate and the second plate to define a placement space, and the battery cell and the support member are disposed within the placement space.

[0008] In the above technical solution, by setting up support members and placing them within the placement space, the structural strength of the battery device can be improved while protecting the individual battery cells. Furthermore, apart from the expansion beam structure, no other supporting or limiting structures for the individual battery cells are required inside the battery device, which can also improve the energy density of the battery device.

[0009] According to some embodiments of this application, the support includes: a first support and a second support, wherein the first support is disposed between adjacent battery cells and the second support is disposed between the third plate and the battery cells.

[0010] In the above technical solution, support members can be set between adjacent battery cells, and support members can also be set between the third plate and the battery cells. That is, the support members include a first support member and a second support member. The first support member is set between adjacent battery cells, and the second support member is set between the third plate and the battery cells, so that the number of support members is more reasonable. Support members can be set on the four corner areas of each battery cell. By setting more support members, there are more mechanical transmission paths between the second plate and the support members. When bottoming or stone impact occurs, the four support members on the periphery of a single battery cell can achieve mechanical transmission, thereby further improving the protection effect of the battery cell and further reducing the probability of bottom impact directly acting on the battery cell.

[0011] According to some embodiments of this 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 accommodating gap is defined between four adjacent battery cells in each row and four adjacent battery cells in each column, and a first support member is provided in each first accommodating gap.

[0012] In the above technical solution, the first support members can be arranged in an array in the direction of battery cell arrangement, and each first support member can form a mechanical transmission path with the second plate. More and more evenly distributed mechanical transmission paths can improve the mechanical transmission effect of the second plate after bearing impact load, so that the impact load can be transmitted more evenly through the first support members, and can improve the protection effect of battery cells, further reduce the probability of battery cells being impacted, and improve the safety and reliability of battery device.

[0013] According to some embodiments of this application, the battery cell includes: a housing and an electrode assembly disposed within the housing, wherein the four corner regions of the housing are all constructed with rounded corners to define a first accommodating gap.

[0014] In the above technical solution, the housing of this application embodiment has rounded corners in the four corner areas of the housing, so that the space size of the first accommodating gap defined by the splicing of the four adjacent battery cells is larger. On the one hand, it can reduce the difficulty of setting the first support member, and on the other hand, it can select a first support member with more reasonable size and specifications to improve the support and protection effect of the first support member.

[0015] According to some embodiments of this application, a second receiving gap is defined between the corner area of ​​the battery cell and the third plate, and a second support member is provided in each second receiving gap.

[0016] In the above technical solution, the third plate includes a first side plate and a second side plate. The first side plate is opposite to the two outermost rows of battery cells and the two outermost columns of battery cells. The gap between adjacent battery cells in each column of battery cells is defined by the third plate to form a second accommodating gap. A second support member can be set in each second accommodating gap. By setting the second support member, multiple second support members can be set on the periphery of the battery cell assembly with multiple battery cells arranged, so as to further increase the number of support members and enrich the mechanical transmission path, so as to achieve uniform transmission of impact load.

[0017] At the same time, it can improve the structural strength of the area where the third plate and the adjacent battery cells are located, thereby improving the bottom impact resistance and the side impact resistance.

[0018] According to some embodiments of this application, the outer diameter of the support member is 5mm to 20mm.

[0019] In the above technical solution, the outer diameter of the support member can be reasonably set based on the dimensions of the first accommodating gap and the second accommodating gap. The outer diameter is not less than 5mm so that the support member can provide stable and reliable support and protection. The outer diameter is not greater than 20mm so that the size of the support member is more reasonable and the space occupied by the support member in the placement space is more reasonable, so as to take into account the energy density of the battery device.

[0020] According to some embodiments of this application, the support member is connected to the first plate and spaced apart from the second plate.

[0021] In the above technical solution, on the one hand, the impact load of the second plate can be directly transferred to the first plate through the support member 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 and the battery cell and give the second plate a certain elastic movement space.

[0022] According to some embodiments of this application, a buffer layer is provided on the second plate, and the buffer layer is at least opposite to the support member. In the above technical solution, by providing a buffer layer, on the one hand, the buffer layer can contact the support member to achieve initial buffering of impact loads, reduce impact, and improve the safety and reliability of the battery device; on the other hand, it can alleviate the direct contact between the support member and the second plate, thereby reducing abnormal noises from the battery device during use and improving the user experience.

[0023] According to some embodiments of this application, an electrode terminal is provided on the first surface of the battery cell, and the second surface of the battery cell opposite to the first surface is connected to the first plate, and the first surface and the second plate are opposite to each other and spaced apart.

[0024] According to some embodiments of this application, the electrode protrudes from the first surface, and the support is disposed adjacent to the second plate relative to the electrode terminal.

[0025] In the above technical solution, the probability of direct impact transmission between the second plate and the electrode terminals can be reduced, and the safety and reliability of the battery device in this embodiment can be further improved.

[0026] Secondly, this application proposes a vehicle including the battery device described in the above embodiments.

[0027] 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

[0028] 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:

[0029] Figure 1 This is a schematic diagram of a battery device according to an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of a battery cell according to an embodiment of this application;

[0032] Figure 4 This is a schematic diagram showing the cooperation of the first plate, the second plate, and the battery cell according to an embodiment of this application;

[0033] Figure 5 This is a schematic diagram showing the assembly of the third plate, battery cell, and support member according to an embodiment of this application.

[0034] Figure 6 This is a schematic diagram showing the assembly of the first plate, the second plate, the battery cell, the support member, and the buffer pad according to an embodiment of this application.

[0035] Figure 7 This is a cross-sectional schematic diagram of a battery cell and a support member according to an embodiment of this application;

[0036] Figure 8 This is a schematic diagram of a battery cell and a support member according to an embodiment of this application.

[0037] Figure label:

[0038] Battery device 100,

[0039] First board 10,

[0040] Second plate 20, buffer layer 21.

[0041] Battery cell 30, housing 31, electrode assembly 32, first surface 33, second surface 34, electrode terminal 35.

[0042] Support component 40, first support component 41, second support component 42, third plate 50.

[0043] First accommodating gap a, second accommodating gap b, corner area c.

[0044] Vehicle 200, motor 300, controller 400

[0045] First direction Z, second direction X, third direction Y. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "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.

[0053] 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.

[0054] 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.

[0055] In this application, "multiple" means two or more (including two).

[0056] A single battery cell can be a rechargeable battery. A rechargeable battery is a battery cell that can be recharged after it has been discharged, allowing the active materials to be activated and the cell to continue to be used.

[0057] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0058] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which may form a battery array, and the multiple battery cells may be connected in series, parallel, or in a mixed configuration via a busbar.

[0059] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells, such as forming a battery array.

[0060] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0061] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0062] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0063] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0064] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be sealed or unsealed. The first enclosure may be a first plate, and the second cell may be defined by the second plate and a third plate surrounding the second plate.

[0065] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0066] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0067] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 200 provided in some embodiments of this application. A battery device 100 is disposed inside the vehicle 200, and the battery device 100 may be located at the bottom, front, or rear of the vehicle 200. The battery device 100 can be used to power the vehicle 200; for example, the battery device 100 can serve as the operating power source for the vehicle 200.

[0068] The vehicle 200 may also include a controller 400 and a motor 300. The controller 400 controls the battery device 100 to supply power to the motor 300, which serves as a load, for example, to meet the power requirements of the vehicle 200 during startup, navigation, and driving.

[0069] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 200, but also as the driving power source for the vehicle 200, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 200.

[0070] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing for housing individual battery cells 30.

[0071] The housing is a component that houses the individual battery cells 30. The housing provides space for multiple individual battery cells 30 and can adopt various structures. In some embodiments, the housing may include a first plate 10, a second plate 20, and a third plate 50, with the third plate 50 surrounding the first plate 10 and the second plate 20 to form a housing with placement space.

[0072] As an example, the third plate 50 can be formed as part of the vehicle body, such as: the third plate 50 is constructed as a door sill beam, the third plate 50 is constructed as a longitudinal beam of the vehicle body, the transverse beam of the vehicle body, etc.

[0073] In the battery device 100, there can be one or more battery cells 30. If there are multiple battery cells 30, they can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 30 are connected in both series and parallel. Alternatively, multiple battery cells 30 can be first connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules can be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed in a casing. Another option is that all battery cells 30 can be directly connected in series, parallel, or in a mixed configuration, and then the whole consisting of all battery cells 30 is housed in a casing.

[0074] The battery cell 30 serves as the smallest energy unit of the battery device 100. The battery device 100 includes multiple battery cells 30, each of which includes a housing 31, an end cap, and an electrode assembly 32 disposed within the housing 31.

[0075] like Figure 3 As shown, in some embodiments, the battery cell 30 may include: a housing 31, an end cap, and an electrode assembly 32. The housing 31 is used to define an accommodating space with an installation opening. The housing 31 is constructed as a rigid shell structure, and the electrode assembly 32 is disposed therein.

[0076] 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 during compression and collision.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] The following is for reference. Figures 1-8 This invention describes a battery device 100 and a vehicle 200 according to embodiments of the present invention.

[0084] like Figure 1 As shown in the figure, an embodiment of this application proposes a battery device 100.

[0085] Among them, see Figure 4 and Figure 6 As shown, 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 arranged opposite to 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.

[0086] It should be noted that the first direction is the height direction (vertical direction).

[0087] 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.

[0088] 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.

[0089] 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.

[0090] Combination Figure 1 , Figure 5 as well as Figure 7 As shown, 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 in the placement space.

[0091] 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.

[0092] 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 by 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 by 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.

[0093] 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.

[0094] Combination Figure 5 and Figure 7As shown, according to some embodiments of this application, the support member 40 includes: a first support member 41 and a second support member 42, the first support member 41 being disposed between adjacent battery cells 30, and the second support member 42 being disposed between the third plate 50 and the battery cells 30.

[0095] 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 achieve 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.

[0096] 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.

[0097] like Figure 5 , Figure 7 as well as Figure 8 As shown, 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] Continue to combine Figure 5 and Figure 7 As shown, 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.

[0102] 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.

[0103] 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.

[0104] like Figure 5 and Figure 7 As shown, 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.

[0105] 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.

[0106] 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.

[0107] According to some embodiments of this application, the outer diameter of the support member 40 is 5mm to 20mm.

[0108] 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.

[0109] For example, the outer diameter of the support member 40 can be 5mm, 10mm, 15mm, 20mm, etc.

[0110] 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.

[0111] 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.

[0112] like Figure 6 As shown, 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.

[0113] 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.

[0114] like Figure 6 As shown, 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] like Figure 2 As shown, this application proposes a vehicle 200, including the battery device 100 in the above embodiments.

[0123] 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.

[0124] Other configurations and operations of the battery device 100 and vehicle 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0125] 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.

[0126] 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 by, The battery device comprises: a first plate (10) and a second plate (20), the first plate (10) and the second plate (20) being 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) being located between the first plate (10) and the second plate (20), and the support (40) being arranged adjacent to the second plate (20) compared with the battery cell (30).

2. The battery device according to claim 1, characterized by 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) being 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 cells (30) are 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 of claim 3, 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 to 6, wherein The outer diameter of the support (40) is 5mm-20mm.

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

9. The battery device according to any one of claims 1 to 8, characterized by, 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 according to 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 to 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 the electrode terminal (35).

12. A vehicle characterized by comprising: The battery device of any one of claims 1-11. The battery device of any one of claims 1-11.

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