Battery device and electric device

Abstract

The application discloses a battery device and an electric device. The battery device comprises a box body and a battery cell assembly. The box body defines a containing cavity and comprises a side beam. The side beam comprises a side beam body and a mounting portion protruding towards the containing cavity. The mounting portion cooperates with the side beam body to define an avoiding space on the lower side of the mounting portion. The battery cell assembly is arranged in the containing cavity. In the up-down direction, at least part of the battery cell assembly is below the mounting portion. According to the battery device, the mounting portion cooperates with the side beam body to define the avoiding space on the lower side of the mounting portion. At least part of the battery cell assembly is below the mounting portion. When the battery device is subjected to a side impact, the side beam can deform towards the avoiding space, reducing the probability of the side beam impacting the battery cell assembly, thereby improving the safety of the battery device. Part of the battery cell assembly can extend into the avoiding space, increasing the electric space of the battery cell assembly and the electric quantity of the battery device.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] In related technologies, after a side impact, the battery pack casing can squeeze or puncture the individual battery cells, which can easily deform, potentially leading to battery pack explosion or fire. To ensure side impact safety, a certain safety space is reserved between the battery pack casing and the individual battery cells. However, this reduces the electrical conductivity of the individual battery cells, resulting in lower electrical capacity. Increasing the overall size of the casing would also require a significant amount of space across the vehicle's width. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a battery device that defines a clearance space within a side beam to separate the side beam body from the battery cell assembly. The clearance space provides accommodation for the deformation of the side beam, reducing the probability of the side beam puncturing or compressing the battery cell assembly, thereby improving the safety of the battery device.

[0004] This application also proposes an electrical device for the aforementioned battery device.

[0005] According to a first aspect of this application, a battery device includes: a housing defining a receiving cavity and including a side beam, the side beam including a side beam body and a mounting portion protruding toward the receiving cavity, the mounting portion cooperating with the side beam body to define a clearance space located below the mounting portion; and a battery cell assembly disposed within the receiving cavity, wherein at least a portion of the battery cell assembly is located below the mounting portion in a vertical direction.

[0006] According to the battery device of this application, the mounting part and the side beam body cooperate to define a clearance space located below the mounting part. At least a portion of the battery cell assembly is located below the mounting part. When the battery device is involved in a side collision, the side beam can deform toward the clearance space, reducing the probability of the side beam directly impacting the battery cell assembly, thereby improving the safety of the battery device. Moreover, a portion of the battery cell assembly can extend into the clearance space, which can increase the power distribution space of the battery cell assembly and increase the power capacity of the battery device.

[0007] In some embodiments, in the vertical direction, the upper surface of the battery cell assembly is lower than the lower surface of the mounting portion.

[0008] This embodiment sets the upper surface of the battery cell assembly to be lower than the lower surface of the mounting part. The relative arrangement of the upper surface of the battery cell assembly and the clearance space means that when the battery device is involved in a side collision, the side beam body deforms toward the clearance space, and the mounting part deforms toward the top of the battery cell assembly. This further reduces the probability of the side beam squeezing or puncturing the battery cell assembly when it deforms.

[0009] In some embodiments, in the vertical direction, the two ends of the clearance space extend beyond the two ends of the battery cell assembly.

[0010] This embodiment, by setting the upper and lower ends of the clearance space in the vertical direction to extend beyond the upper and lower ends of the battery cell assembly, when the battery device is involved in a side collision, the mounting part deforms towards the upper part of the battery cell assembly, and the lower end of the side beam body deforms towards the clearance space, further reducing the probability of the side beam squeezing or puncturing the battery cell assembly when it deforms.

[0011] In some embodiments, in the direction of the side beam toward the battery cell assembly, the depth dimension of the clearance space is D and satisfies: 30mm≤D≤50mm.

[0012] This embodiment sets the clearance space in the direction of the side beam toward the battery cell assembly, with a depth dimension of D and satisfying: 30mm≤D≤50mm. This ensures that the clearance space has sufficient depth to accommodate the deformation of the side beam body during deformation, which can further reduce the probability of the side beam body squeezing or puncturing the battery cell assembly during deformation.

[0013] In some embodiments, the battery cell assembly is spaced apart from the mounting portion in the direction of the side beam toward the battery cell assembly; or, in the vertical direction, the end of the battery cell assembly facing the side beam is aligned with the end of the mounting portion facing the battery cell assembly; or, a portion of the battery cell assembly extends into the clearance space.

[0014] This embodiment provides users with a variety of battery devices by setting different positional relationships between individual battery components and clearance spaces, thus rationally arranging the internal space of the battery device.

[0015] In some embodiments, the housing further includes a cover plate located above the battery cell assembly and connected to the mounting portion.

[0016] This embodiment improves the safety of the battery cell assembly by setting a cover plate to close the opening of the housing cavity and prevent impurities from the external environment from entering the battery cell assembly; or by fixing the battery cell assembly to the side beam.

[0017] In some embodiments, the cover plate extends into the clearance space and overlaps with the mounting portion.

[0018] In this embodiment, a cover plate is set to extend into the clearance space and overlap with the mounting part. The upper surface of the cover plate extends along the same plane, which can prevent the cover plate from folding and facilitate the processing and manufacturing of the cover plate.

[0019] In some embodiments, the battery device further includes: a plurality of fasteners, the mounting portion being fastened to the cover plate by the plurality of fasteners, and the clearance space extending through the lower surface of the side beam to form an operating port communicating with the clearance space.

[0020] In this embodiment, multiple fasteners are installed onto the cover plate and the mounting part through the operating port to fix the cover plate to the mounting part.

[0021] In some embodiments, the housing further includes a cushioning pad located between the mounting portion and the cover plate.

[0022] In this embodiment, a buffer pad is provided between the mounting part and the cover plate. The buffer pad can alleviate the wear and tear when the cover plate is connected to the mounting part.

[0023] In some embodiments, the housing further includes a reinforcing bracket disposed on the upper side of the cover plate and connected between the cover plate and the side beam.

[0024] This embodiment increases the connection strength between the cover plate and the side beam by setting a reinforcing bracket, which is arranged on the upper side of the cover plate and connected between the cover plate and the side beam.

[0025] In some embodiments, the housing further includes a tray located below the battery cell assembly, the tray being detachably connected to the side beam body.

[0026] In this embodiment, a tray is set below the battery cell assembly. The tray is detachably connected to the side beam body. The tray is used to seal the bottom of the battery cell assembly to prevent external dust or moisture from entering the battery cell assembly, and can also withstand impacts from the bottom.

[0027] In some embodiments, the side beam has multiple cavities.

[0028] This embodiment incorporates a cavity within the side beam. When the side beam is subjected to a side impact, the cavity can absorb the impact force, thereby reducing the impact force of the side beam on the battery cell assembly.

[0029] The power supply device according to the second aspect of this application includes: the battery device according to the first aspect of this application.

[0030] According to the electrical device of this application, the improved performance of the battery device is beneficial to improving the electrical performance of the electrical device.

[0031] In some embodiments, the electrical device is a vehicle, the housing is part of the vehicle's chassis, and the side beam is the vehicle's door sill beam.

[0032] This embodiment integrates the battery device directly into the vehicle, eliminating the need for the casing and related components of a traditional battery device, thereby reducing the overall vehicle weight, improving space utilization, and increasing the driving range.

[0033] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 These are schematic diagrams of vehicles according to some embodiments of this application;

[0036] Figure 2 These are schematic diagrams of battery devices according to some embodiments of this application;

[0037] Figure 3 This is an exploded view of a battery device according to some embodiments of this application;

[0038] Figure 4 This is a cross-sectional view of a battery device according to some embodiments of this application;

[0039] Figure 5 This is an inverted cross-sectional view of a battery device according to some embodiments of this application, with fasteners installed from top to bottom.

[0040] Figure label:

[0041] 100. Vehicle; 101. Battery unit; 102. Controller; 103. Motor;

[0042] 10. Housing; 11. Receiving cavity; 12. Side beam; 121. Side beam body; 122. Mounting part; 123. Clearance space; 124. Operating port; 125. Cavity; 13. Cover plate; 14. Buffer pad; 15. Reinforcing bracket;

[0043] 20. Battery cell modules;

[0044] 30. Fasteners;

[0045] 40. Seat crossbeam. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0049] 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.

[0050] 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 one or more battery cells, and when there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed connection via a busbar.

[0051] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0052] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more battery cell assemblies housed within the housing. The battery cell assembly may be a battery module, and can be housed within the housing by securing the battery module to the housing. Alternatively, the battery cell assembly may be housed within the housing by directly securing multiple battery cells to the housing.

[0053] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, battery devices, as the power source, play an irreplaceable and crucial role. Among them, battery devices, as core components of new energy vehicles, have high requirements in terms of both energy density and reliability.

[0054] When the battery pack is subjected to a side impact, the casing may compress or puncture the individual battery cells, which may deform, potentially leading to a battery pack explosion or fire. To ensure safety in side impacts, a certain safety space is provided between the battery pack casing and the individual battery cells. However, this reduces the electrical conductivity of the individual battery cells, resulting in a lower electrical capacity. Increasing the overall size of the casing would also require a significant amount of space across the vehicle's width.

[0055] Based on the above considerations, the side beam of the enclosure includes a side beam body and a mounting part. The mounting part is connected to the side of the side beam body facing the receiving cavity. The mounting part cooperates with the side beam body to define a clearance space located below the mounting part. In the vertical direction, at least a portion of the battery cell assembly is located below the mounting part. The clearance space is defined within the side beam to separate the side beam body from the battery cell assembly. The clearance space provides accommodation for the deformation of the side beam, reducing the probability of the side beam puncturing or squeezing the battery cell assembly, thereby improving the safety of the battery device.

[0056] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0057] For ease of explanation, the following embodiments use a vehicle 100 as an example to describe in detail the structure of the electrical device, battery device 101, and battery cell assembly 20 of this application.

[0058] Please refer to Figure 1 , Figure 1 The diagram below illustrates the structure of a vehicle 100, which is an electrical device provided in some embodiments of this application. The vehicle 100 can be a new energy vehicle, such as a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle. A battery device 101 is installed inside the vehicle 100, and the battery device 101 can be located at the bottom, front, or rear of the vehicle 100. The battery device 101 can be used to power the vehicle 100; for example, the battery device 101 can serve as the operating power source for the vehicle 100. The vehicle 100 may also include a controller 102 and a motor 103. The controller 102 controls the battery device 101 to supply power to the motor 103, for example, to meet the power needs of the vehicle 100 during startup, navigation, and driving.

[0059] In some embodiments of this application, the battery device 101 can not only serve as the operating power source for the vehicle 100, but also as the driving power source for the vehicle 100, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100.

[0060] The following is for reference. Figures 2-5 The battery device 101 according to the first aspect of the present application is described. Figure 2 This is a schematic diagram of a battery device 101 according to some embodiments of this application. Figure 3 This is an exploded view of a battery device 101 according to some embodiments of the present application. The battery device 101 includes a housing 10 and a plurality of battery cell assemblies 20. The housing 10 provides assembly space for the battery cell assemblies 20, and the battery cell assemblies 20 are housed within the housing 10.

[0061] Figure 4 This is a cross-sectional view of a battery device 101 according to some embodiments of this application. Figure 5 This is an inverted cross-sectional view of a battery device 101 according to some embodiments of this application, with fasteners 30 installed from top to bottom.

[0062] According to the battery device 101 of the first aspect of this application, the battery device 101 includes: a housing 10, the housing 10 defining a receiving cavity 11 and including a side beam 12, the side beam 12 including a side beam body 121 and a mounting portion 122 protruding toward the receiving cavity 11, the mounting portion 122 cooperating with the side beam body 121 to define a clearance space 123 located below the mounting portion 122; and a battery cell assembly 20, the battery cell assembly 20 disposed in the receiving cavity 11, at least a portion of the battery cell assembly 20 being located below the mounting portion 122 in the vertical direction.

[0063] For example, the housing 10 includes side beams 12, which can be four in number. The four side beams 12 can be connected end to end to form a receiving cavity 11. The housing 10 can also include two side beams 12, which are arranged at intervals. The housing 10 also includes a cover plate 13 and a bottom plate. The cover plate 13 and the bottom plate are both connected to the side beams 12 and are located at the upper and lower ends of the side beams 12, respectively, to close the upper and lower openings of the receiving cavity 11, thereby enclosing the battery cell assembly 20 within the receiving cavity 11.

[0064] The side beam 12 includes a side beam body 121 and a mounting part 122. The mounting part 122 is connected to the side of the side beam body 121 facing into the receiving cavity 11. In the vertical direction, the lower surface of the side beam body 121 is set higher than the lower surface of the side beam body 121 to define a clearance space 123 located below the mounting part 122 when the mounting part 122 cooperates with the side beam body 121. At least a portion of the battery cell assembly 20 is located below the mounting part 122. This can be a part of the battery cell assembly 20 located below the mounting part 122 or the entire battery cell assembly 20 located below the mounting part 122.

[0065] Optionally, the battery cell assembly 20 can be located diagonally below the mounting portion 122, i.e., the clearance space 123 is a cavity. When the battery device 101 is subjected to a side collision, the side beam 12 will deform toward the clearance space 123. The clearance space 123 provides a space to accommodate the deformation of the side beam 12, reducing the probability of the side beam 12 directly impacting the battery cell assembly 20, i.e. reducing the probability of the battery cell assembly 20 being punctured or squeezed, thereby improving the safety of the battery device 101.

[0066] Optionally, a portion of the battery cell assembly 20 may be located directly below the mounting portion 122, meaning a portion of the battery cell assembly 20 extends into the clearance space 123. Additionally, a gap space may be reserved between the battery cell assembly 20 and the side beam body 121. Based on existing technology, this increases the electrical distribution space of the battery cell assembly 20, thereby increasing the power capacity of the battery device 101. Furthermore, in the event of a side impact to the battery device 101, the gap space provides accommodation for the deformation of the side beam 12, reducing the probability of the battery cell assembly 20 being punctured or crushed, thus improving the safety of the battery device 101.

[0067] In some embodiments, the battery device 101 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies 20, the battery cell assemblies 20 being housed within the housing 10. The battery cell assembly 20 may be a battery module, and can be housed within the housing 10 by fixing the battery module to the housing 10; alternatively, the battery cell assembly 20 may also be housed within the housing 10 by directly fixing multiple battery cells to the housing 10.

[0068] The housing 10 also includes a cover plate 13 and a bottom plate. The cover plate 13 and the bottom plate are both connected to the side beam 12 and are located at the upper and lower ends of the side beam 12, respectively. One or more battery cell assemblies 20 can be fixed on the bottom plate. The bottom plate is used to support the battery cell assembly 20, and the cover plate 13 is used to close the upper opening of the receiving cavity 11.

[0069] In other embodiments, the electrical device is a vehicle 100, and the battery device 101 can also be directly integrated into the vehicle 100. The battery device 101 includes a housing 10 and one or more battery cell assemblies 20, and the housing 10 is part of the chassis structure of the vehicle 100. For example, the side beam 12 of the housing 10 can be at least a part of the crossbeam, longitudinal beam, or sill beam of the vehicle 100. In this application, the side beam 12 of the housing 10 is the sill beam of the vehicle 100. The battery cell assembly 20 can be a battery module, which can be directly fixed to the sill beam; or, the battery cell assembly 20 can be made by directly fixing multiple battery cells to the sill beam.

[0070] The housing 10 also includes a cover plate 13 and a tray. The cover plate 13 and the tray are both connected to the side beam 12 and are located at the upper and lower ends of the side beam 12, respectively. One or more battery cell assemblies 20 can be fixed on the cover plate 13. The cover plate 13 is used to fix the battery cell assembly 20, and the tray is used to close the bottom of the battery cell assembly 20.

[0071] In some specific examples, the upper surface of the side beam body 121 is flush with the upper surface of the mounting part 122, and the side beam 12 is a one-piece molded part, which makes the processing of the side beam 12 more convenient.

[0072] According to the battery device 101 of this application, the mounting part 122 cooperates with the side beam body 121 to define a clearance space 123 located on the lower side of the mounting part 122. At least a portion of the battery cell assembly 20 is located below the mounting part 122. When the battery device 101 is involved in a side collision, the side beam 12 can deform toward the clearance space 123, reducing the probability of the side beam 12 directly impacting the battery cell assembly 20, thereby improving the safety of the battery device 101. Moreover, a portion of the battery cell assembly 20 can extend into the clearance space 123, which can increase the power distribution space of the battery cell assembly 20 and increase the power of the battery device 101.

[0073] In some embodiments, refer to Figures 2-4 In the vertical direction, the upper surface of the battery cell assembly 20 is lower than the lower surface of the mounting portion 122.

[0074] For example, in the vertical direction, the upward-facing surface of the battery cell assembly 20 is the upper surface of the battery cell assembly 20, and the downward-facing surface of the mounting portion 122 is the lower surface of the mounting portion 122. In the vertical direction, the upper surface of the battery cell assembly 20 is lower than the lower surface of the mounting portion 122, that is, the battery cell assembly 20 is completely located below the mounting portion 122.

[0075] The relative arrangement of the upper surface of the battery cell assembly 20 and the clearance space 123 means that when the battery device 101 is involved in a side collision, the side beam body 121 deforms toward the clearance space 123 and the mounting part 122 deforms toward the top of the battery cell assembly 20, further reducing the probability that the side beam 12 will squeeze or puncture the battery cell assembly 20 when it deforms.

[0076] In this embodiment, by setting the upper surface of the battery cell assembly 20 to be lower than the lower surface of the mounting part 122, and the relative arrangement of the upper surface of the battery cell assembly 20 and the clearance space 123, when the battery device 101 is involved in a side collision, the side beam body 121 deforms toward the clearance space 123, and the mounting part 122 deforms toward the top of the battery cell assembly 20, further reducing the probability of the side beam 12 deforming and squeezing or puncturing the battery cell assembly 20.

[0077] In some embodiments, refer to Figure 4 In the vertical direction, the two ends of the clearance space 123 extend beyond the two ends of the battery cell assembly 20.

[0078] For example, the upper and lower ends of the clearance space 123 extend beyond the upper and lower ends of the battery cell assembly 20, that is, the upper and lower ends of the battery cell assembly 20 are respectively arranged opposite to the clearance space 123. When the battery device 101 is involved in a side collision, the lower end of the side beam body 121 can deform toward the clearance space 123, reducing the probability that the lower end of the side beam body 121 will squeeze or puncture the battery cell assembly 20 when it deforms.

[0079] In this embodiment, by setting the upper and lower ends of the clearance space 123 in the vertical direction to extend beyond the upper and lower ends of the battery cell assembly 20, when the battery device 101 is involved in a side collision, the mounting part 122 deforms upward toward the battery cell assembly 20, and the lower end of the side beam body 121 deforms toward the clearance space 123, further reducing the probability of the side beam 12 deforming and squeezing or puncturing the battery cell assembly 20.

[0080] In some embodiments, refer to Figure 4In the direction of the side beam 12 toward the battery cell assembly 20, the depth dimension of the clearance space 123 is D and satisfies: 30mm≤D≤50mm.

[0081] For example, the depth of the clearance space 123 is the dimension of the mounting part 122 in the direction of the side beam 12 toward the battery cell assembly 20. The depth dimension of the clearance space 123 is D and satisfies: 30mm≤D≤50mm, so that the clearance space 123 has sufficient depth to accommodate the deformation of the side beam body 121 when it deforms, which can further reduce the probability of the side beam body 121 squeezing or puncturing the battery cell assembly 20 when it deforms.

[0082] For example, in the direction of the side beam 12 toward the battery cell assembly 20, the depth of the clearance space 123 can be 30mm, 35mm, 45mm or 50mm, etc.

[0083] In this embodiment, by setting the clearance space 123 in the direction of the side beam 12 toward the battery cell assembly 20, the depth dimension of the clearance space 123 is D and satisfies: 30mm≤D≤50mm, so that the clearance space 123 has sufficient depth to accommodate the deformation of the side beam body 121 when it deforms, which can further reduce the probability of the side beam body 121 squeezing or puncturing the battery cell assembly 20 when it deforms.

[0084] In some embodiments, refer to Figure 4 In the direction from the side beam 12 toward the battery cell assembly 20, the battery cell assembly 20 and the mounting portion 122 are arranged at a distance; or,

[0085] In the vertical direction, the end of the battery cell assembly 20 facing the side beam 12 is aligned with the end of the mounting portion 122 facing the battery cell assembly 20; or,

[0086] A portion of the battery cell assembly 20 extends into the clearance space 123.

[0087] For example, in the arrangement of the battery device 101, the side beam 12 and the battery cell assembly 20 can be arranged in the following three ways:

[0088] In the direction of the side beam 12 toward the battery cell assembly 20, the battery cell assembly 20 and the mounting part 122 are arranged at intervals. There is also a certain space between the clearance space 123 and the battery cell assembly 20 to increase the accommodation space when the side beam 12 deforms, and further reduce the probability of the side beam 12 squeezing or puncturing the battery cell when it deforms.

[0089] In the vertical direction, the end of the battery cell assembly 20 facing the side beam 12 is aligned with the end of the mounting part 122 facing the battery cell assembly 20. The battery cell assembly 20 and the opening of the clearance space 123 facing the battery cell assembly 20 are closely attached. This reduces the probability of the side beam 12 deforming and squeezing or puncturing the battery cell, while also increasing the power distribution space of the battery cell assembly 20 to increase the power of the battery device 101.

[0090] A portion of the end of the battery cell assembly 20 facing the side beam 12 extends into the clearance space 123, and there is also a gap between the end face of the battery cell assembly 20 and the end face of the side beam body 121, which can further increase the power distribution space of the battery cell assembly 20, and also provide a space to accommodate the deformation of the side beam body 121.

[0091] This embodiment provides users with a variety of battery device 101 layout options by setting different positional relationships between the battery cell assembly 20 and the clearance space 123.

[0092] In some embodiments, refer to Figures 2-4 The housing 10 also includes a cover plate 13, which is located above the battery cell assembly 20 and connected to the mounting portion 122.

[0093] For example, the battery device 101 can be a battery pack, which includes a housing 10 and one or more battery cell assemblies 20, with the battery cell assemblies 20 housed within the housing 10. A cover 13 is located above the battery cell assembly 20 and connected to the mounting portion 122. The cover 13 is used to close the upper opening of the receiving cavity 11, preventing impurities from the external environment from entering the battery cell assembly 20 and improving the safety of the battery cell assembly 20.

[0094] The electrical device is vehicle 100, and the battery device 101 can also be directly integrated into vehicle 100. The battery device 101 includes a housing 10 and one or more battery cell assemblies 20. The housing 10 is part of the chassis structure of vehicle 100. For example, the side beam 12 of the housing 10 can be at least part of the sill beam of vehicle 100, and the cover plate 13 is used to fix the battery cell assembly 20 to the sill beam of vehicle 100.

[0095] For example, the cover plate 13 can be connected to the side of the mounting part 122 facing the receiving cavity 11.

[0096] In this embodiment, a cover plate 13 is provided to close the opening of the receiving cavity 11 of the housing 10, thereby preventing impurities from the external environment from entering the battery cell assembly 20 and improving the safety of the battery cell assembly 20; or the battery cell assembly 20 is fixedly connected to the side beam 12.

[0097] In some embodiments, refer to Figures 3-5 The cover plate 13 extends into the clearance space 123 and overlaps with the mounting part 122.

[0098] In this embodiment, by setting the cover plate 13 to extend into the clearance space 123 and overlap with the mounting part 122, and the upper surface of the cover plate 13 extends along the same plane, the cover plate 13 can be prevented from folding and the processing and manufacturing of the cover plate 13 can be facilitated.

[0099] In some embodiments, refer to Figures 3-5 The battery device 101 also includes: a plurality of fasteners 30, the mounting part 122 and the cover plate 13 are fastened together by the plurality of fasteners 30, and the clearance space 123 passes through the lower surface of the side beam 12 to form an operating port 124 communicating with the clearance space 123.

[0100] For example, the fastener 30 installs the cover plate 13 onto the mounting part 122 through the operating port 124. Since the cover plate 13 is thinner in the vertical direction, the fastener 30 first passes through the cover plate 13 and then through the mounting part 122, so that the fastener 30 only needs a short stroke to pass through the cover plate 13.

[0101] In this embodiment, multiple fasteners 30 are installed onto the cover plate 13 and the mounting part 122 through the operation port 124, which are used to fix the cover plate 13 onto the mounting part 122.

[0102] For example, a plurality of first connecting holes may be formed on the cover plate 13, and a plurality of second connecting holes may be formed on the mounting part 122. The number of first connecting holes and second connecting holes are equal and correspond one-to-one. The fastener 30 may be a bolt, which is sequentially inserted into the first connecting holes and the second connecting holes to fix the cover plate 13 to the mounting part 122.

[0103] In a specific example, the steps for fixing the cover plate 13 to the mounting part 122 are as follows:

[0104] The side beam 12 is placed upside down into the fixture assembly with the operating port 124 facing upwards. The battery cell assembly 20 and the cover plate 13 are placed upside down into the fixture assembly, and the fastener 30 is assembled onto the mounting part 122 and the cover plate 13 through the operating port 124.

[0105] In some embodiments, refer to Figures 4-5 The housing 10 also includes a buffer pad 14, which is located between the mounting part 122 and the cover plate 13.

[0106] The buffer pad 14 can reduce the direct impact and wear when the mounting part 122 contacts the cover plate 13, which helps to extend the service life of the mounting part 122 and the cover plate 13. For example, the buffer pad 14 may include rubber, foam plastic, silicone, etc.

[0107] In this embodiment, a buffer pad 14 is provided between the mounting part 122 and the cover plate 13. The buffer pad 14 can alleviate the wear when the cover plate 13 is connected to the mounting part 122.

[0108] For example, the buffer pad 14 may have a third connecting hole opposite to the first connecting hole, and bolts may be inserted sequentially into the first connecting hole, the third connecting hole and the second connecting hole to fix the buffer pad 14 between the cover plate 13 and the mounting part 122.

[0109] For example, the buffer pad 14 can also be a sealing pad or sealing ring, used to seal the assembly gap between the mounting part 122 and the cover plate 13.

[0110] In some embodiments, refer to Figure 2 The housing 10 also includes a reinforcing bracket 15, which is arranged on the upper side of the cover plate 13 and connected between the cover plate 13 and the side beam 12.

[0111] For example, the battery device 101 can be a battery pack, which includes a housing 10 and one or more battery cell assemblies 20, the battery cell assemblies 20 being housed within the housing 10. A cover plate 13 is located above the battery cell assemblies 20 and is connected to the mounting portion 122. The cover plate 13 is used to close the upper opening of the receiving cavity 11. A reinforcing bracket 15 is arranged on the upper side of the cover plate 13 and connected between the cover plate 13 and the side beam 12, which can increase the connection strength between the cover plate 13 and the side beam 12.

[0112] The electrical device is vehicle 100, and the battery device 101 can also be directly integrated into vehicle 100. The battery device 101 includes a housing 10 and one or more battery cell assemblies 20. The housing 10 is part of the chassis structure of vehicle 100. For example, the side beam 12 of housing 10 can be at least part of the sill beam of vehicle 100. A cover plate 13 is used to fix the battery cell assembly 20 to the sill beam of vehicle 100. A reinforcing bracket 15 is arranged on the upper side of the cover plate 13 and connected between the cover plate 13 and the side beam 12, which can increase the connection strength between the cover plate 13 and the side beam 12, thereby increasing the strength of fixing the battery cell assembly 20 to the sill beam of vehicle 100.

[0113] The cover plate 13 is also provided with a seat crossbeam 40, which is welded and fixed to the cover plate 13. The reinforcing bracket 15 is connected between the seat crossbeam 40 and the side beam 12.

[0114] In this embodiment, by setting a reinforcing bracket 15, which is arranged on the upper side of the cover plate 13 and connected between the cover plate 13 and the side beam 12, the connection strength between the cover plate 13 and the side beam 12 can be increased.

[0115] In some embodiments, refer to Figures 3-5 The housing 10 also includes a tray, which is located below the battery cell assembly 20 and is detachably connected to the side beam body 121.

[0116] For example, the battery device 101 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies 20, the battery cell assemblies 20 being housed within the housing 10. The housing 10 also includes a tray located below the battery cell assemblies 20, the tray being detachably connected to the side beam body 121, the tray being used to close the opening of the receiving cavity 11 and to withstand impacts from the bottom.

[0117] The electrical device is vehicle 100, and the battery device 101 can also be directly integrated into vehicle 100. The battery device 101 includes a housing 10 and one or more battery cell assemblies 20. The housing 10 is part of the chassis structure of vehicle 100. For example, the side beam 12 of the housing 10 can be at least part of the sill beam of vehicle 100. The housing 10 also includes a tray located below the battery cell assembly 20. The tray is detachably connected to the side beam body 121 and is used to seal the bottom of the battery cell assembly 20 to prevent external dust or moisture from entering the battery cell assembly 20, while also resisting impacts from the bottom.

[0118] In this embodiment, a tray is set below the battery cell assembly 20. The tray is detachably connected to the side beam body 121. The tray is used to seal the bottom of the battery cell assembly 20 to prevent external dust or moisture from entering the battery cell assembly 20, and can also withstand impacts from the bottom.

[0119] In some embodiments, refer to Figures 4-5 The side beam 12 has multiple cavities 125.

[0120] For example, multiple cavities 125 can be provided, and multiple cavities 125 can extend along the length direction of the side beam 12; multiple cavities 125 can be arranged in the width direction of the side beam 12, and multiple cavities 125 can also be arranged in the vertical direction.

[0121] The cavity 125 can reduce the weight of the side beam 12. At the same time, when the side beam 12 is subjected to a side impact, the cavity 125 can absorb the impact force and reduce the impact force of the side beam 12 on the battery cell assembly 20.

[0122] In this embodiment, a cavity 125 is provided inside the side beam 12. When the side beam 12 is subjected to a side impact, the cavity 125 can absorb the impact force and reduce the impact force of the side beam 12 on the battery cell assembly 20.

[0123] The power supply device according to the second aspect of this application includes: the battery device 101 of the first aspect of this application.

[0124] According to the electrical device of this application, since the performance of the battery device 101 is improved, it is beneficial to improve the working power consumption performance of the electrical device.

[0125] In some embodiments, refer to Figures 2-3 The electrical device is vehicle 100, the box body 10 is part of the chassis of vehicle 100, and the side beam 12 is the door sill beam of vehicle 100.

[0126] In this embodiment, the battery device 101 is directly integrated into the vehicle 100, eliminating the need for the casing and related components of the traditional battery device 101, thereby reducing the overall vehicle weight, improving space utilization, and increasing the driving range.

[0127] The following will refer to Figures 1-5 A battery device 101 according to a specific embodiment of this application is described.

[0128] Example 1,

[0129] Reference Figures 2-4 ,

[0130] The electrical device is vehicle 100, and the battery device 101 can also be directly integrated into vehicle 100. The battery device 101 includes a housing 10 and one or more battery cell assemblies 20. The housing 10 is part of the chassis structure of vehicle 100. The housing 10 includes side beams 12, which are the door sill beams of vehicle 100.

[0131] The side beam 12 includes a side beam body 121 and a mounting portion 122. The mounting portion 122 is connected to the side of the side beam body 121 facing the receiving cavity 11. In the vertical direction, the lower surface of the side beam body 121 is set higher than the lower surface of the side beam body 121, so that a clearance space 123 located below the mounting portion 122 is defined by the cooperation between the mounting portion 122 and the side beam body 121. In the direction of the side beam 12 toward the battery cell assembly 20, the battery cell assembly 20 is arranged spaced apart from the mounting portion 122. In the direction of the side beam 12 toward the battery cell assembly 20, the depth dimension of the clearance space 123 is 37mm.

[0132] In the arrangement of the battery device 101, the positional relationship between the mounting part 122 and the clearance space 123 can be as follows:

[0133] In the direction from the side beam 12 toward the battery cell assembly 20, the battery cell assembly 20 and the mounting portion 122 are arranged at a distance, that is, there is a certain space between the clearance space 123 and the battery cell assembly 20; or,

[0134] In the vertical direction, the end of the battery cell assembly 20 facing the side beam 12 is aligned with the end of the mounting portion 122 facing the battery cell assembly 20, and the battery cell assembly 20 and the opening of the clearance space 123 facing the battery cell assembly 20 are in close contact; or,

[0135] A portion of the battery cell assembly 20 extends into the clearance space 123.

[0136] The housing 10 also includes a cover plate 13, which is located above the battery cell assembly 20. The cover plate 13 extends into the clearance space 123 and overlaps with the mounting part 122. The clearance space 123 extends through the lower surface of the side beam 12 to form an operation port 124 that communicates with the clearance space 123. The mounting part 122 and the cover plate 13 are fastened together by a plurality of fasteners 30, which are installed and fixed through the operation port 124.

[0137] The housing 10 also includes a buffer pad 14, which is located between the mounting part 122 and the cover plate 13.

[0138] The housing 10 also includes a reinforcing bracket 15, which is arranged on the upper side of the cover plate 13 and connected between the cover plate 13 and the side beam 12.

[0139] The housing 10 also includes a tray located below the battery cell assembly 20, which is detachably connected to the side beam body 121.

[0140] Example 2,

[0141] The difference between this embodiment and Embodiment 1 is that the battery device 101 is a battery pack, which includes a housing 10 and one or more battery cell assemblies 20. The housing 10 has a receiving cavity 11, in which the battery cell assemblies 20 are housed.

[0142] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," 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.

[0143] 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 (101), characterized in that, include: A housing (10) defines a receiving cavity (11) and includes a side beam (12), the side beam (12) including a side beam body (121) and a mounting portion (122) protruding into the receiving cavity (11), the mounting portion (122) cooperating with the side beam body (121) to define a clearance space (123) located below the mounting portion (122); A battery cell assembly (20) is disposed within the receiving cavity (11), and at least a portion of the battery cell assembly (20) is located below the mounting portion (122) in the vertical direction.

2. The battery device (101) according to claim 1, characterized in that, In the vertical direction, the upper surface of the battery cell assembly (20) is lower than the lower surface of the mounting portion (122).

3. The battery device (101) according to claim 2, characterized in that, In the vertical direction, the two ends of the clearance space (123) extend beyond the two ends of the battery cell assembly (20).

4. The battery device (101) according to claim 1, characterized in that, In the direction of the side beam (12) toward the battery cell assembly (20), the depth dimension of the clearance space (123) is D and satisfies: 30mm≤D≤50mm.

5. The battery device (101) according to claim 1, characterized in that, In the direction from the side beam (12) toward the battery cell assembly (20), the battery cell assembly (20) and the mounting portion (122) are arranged at a distance; or, In the vertical direction, the end of the battery cell assembly (20) facing the side beam (12) is aligned with the end of the mounting portion (122) facing the battery cell assembly (20); or, A portion of the battery cell assembly (20) extends into the clearance space (123).

6. The battery device (101) according to any one of claims 1-5, characterized in that, The housing (10) also includes a cover plate (13), which is located above the battery cell assembly (20) and connected to the mounting part (122).

7. The battery device (101) according to claim 6, characterized in that, The cover plate (13) extends into the clearance space (123) and overlaps with the mounting part (122).

8. The battery device (101) according to claim 7, characterized in that, Also includes: Multiple fasteners (30) are used to fasten the mounting part (122) to the cover plate (13). The clearance space (123) extends through the lower surface of the side beam (12) to form an operating port (124) communicating with the clearance space (123).

9. The battery device (101) according to claim 7, characterized in that, The housing (10) further includes a buffer pad (14), which is located between the mounting part (122) and the cover plate (13).

10. The battery device (101) according to claim 6, characterized in that, The housing (10) further includes a reinforcing bracket (15), which is arranged on the upper side of the cover plate (13) and connected between the cover plate (13) and the side beam (12).

11. The battery device (101) according to any one of claims 1-5, characterized in that, The housing (10) also includes a tray located below the battery cell assembly (20) and detachably connected to the side beam body (121).

12. The battery device (101) according to claim 1, characterized in that, The side beam (12) has multiple cavities (125).

13. An electrical appliance, characterized in that, include: The battery device (101) according to any one of claims 1-12.

14. The electrical appliance according to claim 13, characterized in that, The electrical device is a vehicle (100), the housing (10) is part of the chassis of the vehicle (100), and the side beam (12) is the door sill beam of the vehicle (100).

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