Battery device, vehicle, and electric device

Abstract

The embodiment of the present application relates to a battery device, a vehicle and an electric device, the battery device comprising a battery module and a shell, the shell being provided with cavities penetrating through opposite sides of the shell, a part of the shell surrounding the cavities being provided with boundaries, and two ends of the shell in a surrounding direction being spaced apart; the shell comprising an inner shell and an outer shell, an inner space of the shell being formed between the inner shell and the outer shell, and the battery module being arranged in the inner space of the shell. In the arrangement of the embodiment, the battery device is easy to cooperate with external structures, and the application environment has less restrictions on the installation of the battery device.

Description

Technical Field

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

[0002] The installation of power batteries in new energy vehicles is subject to many restrictions, and the installation location is relatively fixed, often installed under the floor. Utility Model Content

[0003] This application provides a battery device, a vehicle, and an electrical device, aiming to solve the problem of limited battery installation.

[0004] In a first aspect, embodiments of this application provide a battery device, which includes a battery module and a housing. The housing has a cavity extending through opposite sides of the housing, and the housing surrounds a portion of the boundary of the cavity. The two ends of the housing are spaced apart in its circumferential direction. The housing includes an inner shell and an outer shell, and an internal space is formed between the inner shell and the outer shell. The battery module is disposed in the internal space of the housing.

[0005] In some optional embodiments, the inner shell is disposed around a portion of the boundary of the cavity, and the outer shell is located on the side of the inner shell away from the cavity, with the two ends of the outer shell corresponding to the two ends of the inner shell respectively; the inner shell and the outer shell are spaced apart to form the internal space of the shell, and the internal space of the shell surrounds a portion of the boundary of the cavity.

[0006] In some optional embodiments, the battery module includes multiple battery cells arranged along the circumferential direction of the housing, with the multiple battery cells ringing around a portion of the cavity boundary.

[0007] In some optional embodiments, the battery cell is a cylindrical battery cell; the multiple battery cells include multiple first cylindrical battery cells and multiple second cylindrical battery cells, the multiple first cylindrical battery cells are arranged sequentially along the circumferential direction of the housing to form a first battery cell group, the multiple second cylindrical battery cells are arranged sequentially along the circumferential direction of the housing to form a second battery cell group, and the second battery cell group is located outside the first battery cell group.

[0008] In some optional embodiments, the inner shell includes a first connecting portion and two first flat portions, the two first flat portions being disposed opposite to each other and the first connecting portion being connected between the two first flat portions; the outer shell includes a second connecting portion and two second flat portions, the second connecting portion being connected between the two second flat portions.

[0009] In some optional embodiments, the multiple battery cells include multiple first square battery cells, with multiple first square battery cells disposed between the first planar portion and the second planar portion, and the opposite sides of each first square battery cell being respectively attached to the first planar portion and the second planar portion.

[0010] In some optional embodiments, the multiple battery cells also include multiple second square battery cells, with multiple second square battery cells disposed between the first connecting portion and the second connecting portion, and the opposite sides of each second square battery cell contacting the first connecting portion and the second connecting portion respectively.

[0011] In some optional embodiments, the multiple battery cells also include multiple arc-shaped battery cells, which are disposed between the first connecting portion and the second connecting portion; the opposite sides of the arc-shaped battery cells are respectively provided with a first arc surface and a second arc surface, the first arc surface is attached to the first connecting portion, and the second arc surface is attached to the second connecting portion.

[0012] In some optional embodiments, the housing further includes two encapsulation shells, with a first planar portion and a second planar portion corresponding to each other connected to opposite sides of the encapsulation shells.

[0013] In some optional embodiments, the housing further includes two connecting shells, which are arranged at a distance from each other, with the inner shell and the outer shell located between the two connecting shells; the side of each connecting shell closest to the cavity is connected to the inner shell, and the side of each connecting shell furthest from the cavity is connected to the outer shell.

[0014] In some optional embodiments, the battery device further includes a battery controller, which is arranged sequentially with multiple battery cells along the circumferential direction of the housing, and the battery controller is electrically connected to each of the multiple battery cells.

[0015] In some optional embodiments, the battery device further includes a cooling element disposed between the outer shell and the inner shell, the cooling element being arranged around the outer periphery of the inner shell, and each battery module being in contact with the cooling element.

[0016] In some optional embodiments, the housing is a U-shaped structure or a C-shaped structure.

[0017] Secondly, this application provides a vehicle including a chassis assembly and the battery device mentioned above. The chassis assembly includes a mounting member. A cavity in the battery device is used to accommodate the mounting member for mounting the battery device to the chassis assembly. The mounting member includes at least one of the following vehicle structures: a shock absorber, an elastic element, a control arm, and a steering knuckle.

[0018] Thirdly, embodiments of this application provide an electrical device, which includes the battery device mentioned above.

[0019] This application provides a battery device, which includes a housing and a battery module. The housing has a cavity extending through opposite sides of the housing, and the housing is circumferentially disposed around a portion of the boundary of the cavity. The housing has two ends in its circumferential direction, which are spaced apart, and the gap formed between the two ends communicates with the cavity. The housing includes an outer shell and an inner shell, and an internal space is formed between the outer shell and the inner shell. The battery module and other components of the battery device are disposed within the internal space of the housing.

[0020] In this embodiment, the structure of the battery device in the application environment can be inserted into or embedded in the cavity. The battery device can be applied in environments with limited space and complex structures. The battery device has a high adaptability to the application environment and can make full use of the space in the application environment. The battery device occupies a small space. The structure of the battery device makes the application environment have less restrictive effect on the battery device, making the application scenarios of the battery device more diverse and the application range wider. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the battery device provided in the embodiments of this application.

[0023] Figure 2 yes Figure 1 The diagram shows the structure of the battery module of the battery device.

[0024] Figure 3 yes Figure 2 The diagram shows a structural schematic of the first embodiment of the battery module.

[0025] Figure 4 yes Figure 2 The diagram shows the structure of the inner and outer shells.

[0026] Figure 5 yes Figure 2 A schematic diagram of the second embodiment of the battery module shown.

[0027] Figure 6 yes Figure 2 The diagram shows another structural schematic of the shell.

[0028] Figure 7 yes Figure 2 The diagram shows a structural schematic of the third embodiment of the battery module.

[0029] Figure 8 yes Figure 7 The diagram shows the structure of the opposite sides of the arc-shaped battery cell.

[0030] Figure 9 yes Figure 1 The diagram shows the structure of the cooling component of the battery device.

[0031] Figure 10 This is a schematic diagram of the vehicle structure provided in the embodiments of this application.

[0032] Figure 11 yes Figure 10 The diagram shows a partial structural schematic of the suspension components of the chassis assembly.

[0033] Figure 12 yes Figure 10 The diagram shows the structure of the steering knuckle and battery unit in the chassis assembly.

[0034] Figure 13 yes Figure 10 The diagram shows the structural schematics of the vehicle's driving angle module and overall vehicle angle module.

[0035] Reference numerals: 1000, Vehicle; 900, Vehicle body; 811, Drive motor; 812, Motor controller; 710, Travel angle module; 711, Wheel; 721, Shock absorber; 722, Elastic element; 610, Steering knuckle; 500, Chassis assembly; 400, Vehicle corner module; 100, Battery assembly; 10, Battery module; 11, First square cell; 12, Second square cell; 13, Curved cell; 131, First curved surface; 132. Second arc surface; 14. Cylindrical cell; 141. First cell assembly; 1411. First cylindrical cell; 142. Second cell assembly; 1421. Second cylindrical cell; 20. Housing; 21. Cavity; 24. Inner shell; 241. First flat portion; 242. First connecting portion; 25. Outer shell; 251. Second flat portion; 252. Second connecting portion; 26. Connecting shell; 27. Encapsulation shell; 30. Battery controller; 40. Cooling component. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0037] Please see Figure 1 and Figure 2This application provides a battery device 100 for supplying power to external electrical devices. In this embodiment, the battery device 100 includes a housing 20 and a battery module 10. The housing 20 has a cavity 21 extending through opposite sides of the housing 20. The housing 20 is an elongated, ring-shaped structure with two ends in its ring direction, spaced apart. The housing 20 is arranged around a portion of the boundary of the cavity 21. The gap formed between the two ends of the housing 20 communicates with the cavity 21, allowing external structures to enter the cavity 21 through this gap. The cavity 21 has two ports formed on opposite sides of the housing 20, allowing external structures to enter the cavity 21 through these two ports. In some embodiments, the housing 20 has a U-shaped or C-shaped structure.

[0038] The housing 20 includes an outer shell 25 and an inner shell 24, which are spaced apart to define the internal space of the housing 20. The battery module 10 and other components of the battery device 100 are disposed within the internal space of the housing 20. The battery module 10 includes battery cells, and the number and type of battery cells can be set as needed. Battery cells can be square cells, curved cells 13, cylindrical cells 14, etc. In this embodiment, the structure of the battery device 100 in the application environment can be inserted into or embedded in the cavity 21. The battery device 100 can be applied to environments with limited space and complex structures. The battery device 100 has high adaptability to the application environment, can make full use of the space in the application environment, and occupies a small space. The structure of the battery device 100 makes the application environment less restrictive, resulting in a wide range of application scenarios and applications.

[0039] In some embodiments, the boundary of the cavity 21 is connected to the external environment. Structures in the application environment can pass through the two ports of the cavity 21 or be embedded in the cavity 21 through the gap between the two ends of the housing 20. The battery device 100 can be connected to external structures in various ways, making it easy for the battery device 100 to structurally integrate with external structures. The battery device 100 has a high degree of compatibility with other structures, and it can fully utilize idle space in the application environment, resulting in a smaller additional space occupied by the battery device 100. This application does not limit the specific location of the cavity 21 on the housing 20; the cavity 21 can be located in the middle of the housing 20 or at the edge of the housing 20.

[0040] Please see Figure 1 and Figure 2In some embodiments, both the inner shell 24 and the outer shell 25 are elongated, flat structures. The inner shell 24 is arranged around a portion of the boundary of the cavity 21, and the outer shell 25 is disposed on the side of the inner shell 24 away from the cavity 21. The outer shell 25 is also arranged in a circumferential manner, and the various parts of the outer shell 25 correspond to the various parts of the inner shell 24. For example, the two ends of the outer shell 25 correspond to the two ends of the inner shell 24, and one end of the outer shell 25 corresponds to one end of the inner shell 24 to form one end of the housing 20 in its circumferential direction. The outer shell 25 and the inner shell 24 are spaced apart to define the internal space of the housing 20, which is arranged around a portion of the boundary of the cavity 21. The battery module 10 is disposed in the internal space of the housing 20 and located between the outer shell 25 and the inner shell 24.

[0041] In some embodiments, the battery module 10 includes multiple battery cells, which are disposed within the internal space of the housing 20 and arranged sequentially along the circumferential direction of the housing 20. The multiple battery cells are arranged in a ring around a portion of the boundary of the cavity 21. In this embodiment, the multiple battery cells fill the interior of the housing 20 according to its specific shape, allowing for a larger number of battery cells to be disposed within the housing 20, thereby improving the energy density and range of the battery device 100. The multiple battery cells are independent of each other, facilitating cell assembly and disassembly. If a battery cell is damaged, it can be replaced, simplifying maintenance and reducing maintenance costs.

[0042] In some embodiments, the type of battery cell can be set according to the shape of the housing 20. This application describes the type of battery cell and the relationship between the battery cell and the housing 20 through the following multiple embodiments.

[0043] Please see Figure 2 In the first embodiment, the battery cell is a cylindrical battery cell 14. Multiple cylindrical battery cells 14 are arranged in the internal space of the housing 20. The cylindrical battery cells 14 have a small volume, and the multiple cylindrical battery cells 14 can be arranged more compactly. The multiple cylindrical battery cells 14 form fewer gaps, and the multiple cylindrical battery cells 14 have a high utilization rate of the internal space of the housing 20. The battery device 100 has a high energy density and a strong driving range.

[0044] Please see Figure 3Specifically, the plurality of cylindrical battery cells 14 includes a first cylindrical battery cell 1411 and a second cylindrical battery cell 1421. The first cylindrical battery cells 1411 are arranged sequentially along the circumferential direction of the housing 20 to form a first battery cell group 141. The plurality of second cylindrical battery cells 1421 are located between the first battery cell group 141 and the housing 25. The plurality of second cylindrical battery cells 1421 are arranged sequentially along the circumferential direction of the housing 20 to form a second battery cell group 142. The second battery cell group 142 is located outside the first battery cell group 141. In some other embodiments, the plurality of cylindrical battery cells 14 may also include a plurality of third cylindrical battery cells. The plurality of third cylindrical battery cells are located between the second battery cell group 142 and the housing 25. The plurality of third cylindrical battery cells are arranged sequentially along the circumferential direction of the housing 20 to form a third battery cell group. The third battery cell group is located outside the second battery cell group 142.

[0045] Please see Figure 4 In the second embodiment, the inner shell 24 includes a first connecting portion 242 and two first flat portions 241. The first connecting portion 242 is connected between the two first flat portions 241, and the first connecting portion 242 and the two first flat portions 241 are arranged along the circumferential direction of the shell 20. The outer shell 25 includes a second connecting portion 252 and two second flat portions 251. The second connecting portion 252 is connected between the two second flat portions 251, and the second connecting portion 252 and the two second flat portions 251 are arranged along the circumferential direction of the shell 20. The two second flat portions 251 correspond one-to-one with the two first flat portions 241, and each first flat portion 241 is spaced apart from its corresponding second flat portion 251.

[0046] Please see Figure 5 In the second embodiment, the plurality of battery cells includes a plurality of first square battery cells 11. A plurality of first square battery cells 11 are disposed between corresponding first planar portions 241 and second planar portions 251. Each first square battery cell 11 has two opposite flat sides, which are respectively attached to the first planar portion 241 and the second planar portion 251. Each first square battery cell 11 is sandwiched between the corresponding first planar portion 241 and the second planar portion 251. The contact area between the first square battery cell 11 and the housing 20 is large, and the position of the first square battery cell 11 is relatively stable. The first square battery cells 11 have a good filling effect on the internal space of the housing 20, resulting in less empty space inside the housing 20, improving the utilization rate of the internal space of the housing 20, and increasing the integration degree of the battery device 100. In the second embodiment, a buffer layer or a heat-conducting layer or similar structure may be provided between the first square battery cell 11 and the inner shell 24 or the outer shell 25.

[0047] In the second embodiment, two first planar portions 241 are arranged at intervals relative to each other and are generally parallel. Corresponding first planar portions 241 are parallel to second planar portions 251, so that the two first planar portions 241 and the two second planar portions 251 are parallel to each other. The housing 20 has an overall U-shaped structure and can engage or nest with other structures. In other embodiments, the distance between the two first planar portions 241 can gradually increase or decrease in the direction away from the first connecting portion 242, so that the housing 20 has a wide-mouthed U-shaped structure or a narrow-mouthed U-shaped structure.

[0048] Please see Figure 4 and Figure 5 In the second embodiment, the first connecting portion 242 and the second connecting portion 252 are arranged at a distance from each other, and a plurality of battery cells are disposed between the first connecting portion 242 and the second connecting portion 252. Specifically, the plurality of battery cells includes a plurality of second square battery cells 12, which are disposed between the first connecting portion 242 and the second connecting portion 252. The opposite sides of each second square battery cell 12 are in contact with the first connecting portion 242 and the second connecting portion 252, so that the second square battery cell 12 is in a state of being clamped by the first connecting portion 242 and the second connecting portion 252, making the position of the second square battery cell 12 in the internal space of the housing 20 relatively stable.

[0049] In the second embodiment, the first connecting portion 242 and the second connecting portion 252 extend along an arc, and both the first connecting portion 242 and the second connecting portion 252 have a curved plate-like structure. A plurality of second square cells 12 are arranged sequentially along the extending direction of the first connecting portion 242, with gaps between adjacent second square cells 12 to facilitate heat dissipation. In some embodiments, smaller cells such as cylindrical cells 14 can be provided between adjacent second square cells 12 to fill the gaps, thereby increasing the energy density of the battery device 100. In other embodiments, the plurality of second square cells 12 are connected end-to-end, that is, the top cover of each second square cell 12 is connected to the bottom cover of the adjacent second square cell 12 to reduce gaps. In other embodiments, the first connecting portion 242 and the second connecting portion 252 can be fitted together, and no cells are provided between the first connecting portion 242 and the second connecting portion 252.

[0050] Please see Figure 6 In some other embodiments, the first connecting portion 242 and the second connecting portion 252 may also be relatively flat structures, with the opposite sides of the second square battery cell 12 respectively attached to the first connecting portion 242 and the second connecting portion 252.

[0051] Please see Figure 7 and Figure 8In the third embodiment, the structure of the housing 20 is roughly the same as that of the housing 20 in the second embodiment. The difference between the third embodiment and the second embodiment is that the multiple battery cells also include multiple arc-shaped battery cells 13. The multiple arc-shaped battery cells 13 are arranged sequentially along the extension direction of the first connecting portion 242, that is, the multiple arc-shaped battery cells 13 also extend roughly along an arc. Each arc-shaped battery cell 13 has a first arc surface 131 and a second arc surface 132 on opposite sides. The first arc surface 131 faces the first connecting portion 242 and is in contact with the first connecting portion 242, and the second arc surface 132 faces the second connecting portion 252 and is in contact with the second connecting portion 252.

[0052] In the third embodiment, the arc-shaped battery cell 13 is curved to better adapt to the curved first connecting portion 242 and the second connecting portion 252; the contact area between the arc-shaped battery cell 13 and the housing 20 is large, making the positional state of the arc-shaped battery cell 13 relative to the housing 20 more stable; the arc-shaped battery cell 13 fills the internal space of the housing 20 to a high degree, resulting in a higher energy density of the battery device 100 and improving the integration level of the battery device 100. In the third embodiment, the ends of two adjacent arc-shaped battery cells 13 can fit together to reduce the gap inside the housing 20 and make full use of the internal space of the housing 20.

[0053] In some embodiments, the inner shell 24 and the outer shell 25 may be integrally extended along an arc, with the shell 20 extending integrally along an arc. In such embodiments, the shell 20 has a C-shaped structure. The shell 20 is disposed around the cavity 21, and the degree to which the shell 20 covers the cavity 21 can be set according to requirements. The ratio of the length of the shell 20 in its extending direction to the boundary length of the cavity 21 can be greater than or equal to 50% and less than 100%, for example, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 99%, etc.

[0054] Please see Figure 5 , Figure 6 and Figure 7In this embodiment, the battery device 100 may further include a battery controller 30. The battery controller 30 and multiple battery cells are arranged sequentially along the circumferential direction of the housing 20, and the battery module 10 is electrically connected to the battery controller 30. The battery controller 30 may include a battery management system (BMS), which can monitor parameters such as voltage, current, temperature, and charge of the battery device 100, control the charging or discharging of the battery device 100, and predict the battery health status of the battery device 100 to ensure safe operation. In these embodiments, the battery controller 30 may further include a battery disconnect unit (BDU), which acts as a high-voltage "switch" for the battery device 100. It controls the opening and closing of the main circuit through relays, fuses, etc., to prevent overcurrent or short circuits and distribute electrical energy to the electrical equipment.

[0055] Please see Figure 1 In this embodiment, the housing 20 further includes two connecting shells 26, which are arranged at intervals relative to each other. The outer shell 25 and the inner shell 24 are both located between the two connecting shells 26. The connecting shells 26 are curved and have a C-shaped or U-shaped structure to accommodate the outer shell 25 and the inner shell 24. The side of each connecting shell 26 closest to the cavity 21 is connected to the inner shell 24, and the side of each connecting shell 26 furthest from the cavity 21 is connected to the outer shell 25. This makes the structure of the housing 20 more stable, resulting in a higher degree of sealing and effectively protecting the battery module 10.

[0056] Please see Figure 1 and Figure 4 In this embodiment, each first planar portion 241 and its corresponding second planar portion 251 are arranged at intervals. The housing 20 also includes an encapsulation shell 27. The corresponding first planar portions 241 and second planar portions 251 are respectively connected to opposite sides of the encapsulation shell 27 to improve the sealing degree of the housing 20. There are two encapsulation shells 27 to correspond to two sets of corresponding first planar portions 241 and second planar portions 251.

[0057] Please see Figure 9In this embodiment, the battery device 100 further includes a cooling element 40, which is disposed within the internal space of the housing 20 and in contact with the battery module 10 to cool the battery module 10. In this embodiment, the cooling element 40 has a curved structure and extends along the circumferential direction of the housing 20. The cooling element 40 is located between the outer shell 25 and the inner shell 24, and the battery module 10 is stacked on top of the cooling element 40. In this embodiment, the cooling element 40 may include a semiconductor cooling chip, a water-cooled plate, or other cooling components. In this embodiment, two annular cooling elements 40 may be provided, spaced apart from each other. The battery module 10 is located between the two cooling elements 40 and in contact with each of them, enabling rapid adjustment of the stability of the battery device 100, preventing the battery device 100 from overheating, shortening the time the battery device 100 is at a high temperature, protecting the energy storage performance of the battery module 10, and extending the lifespan of the battery device 100. In other embodiments, the cooling element 40 can be a small structure, and multiple cooling elements 40 can be provided, with each cell having at least one cooling element 40. For example, at least one cooling element can be provided between two adjacent cells.

[0058] Please see Figure 10 This application also provides a vehicle 1000, which includes a chassis assembly 500 and a battery device 100. The chassis assembly 500 is capable of carrying the vehicle body 900 and the personnel and goods within the body 900. The battery device 100 is mounted on the chassis assembly 500. In this embodiment, the chassis assembly 500 includes a mounting component, and the battery device 100 is mounted on the chassis assembly 500 by cooperating with the mounting component. The mounting component can be a structure connecting the body 900 and the wheel 711, such as a shock absorber 721, an elastic element 722 (coil spring, air spring, etc.), a control arm, etc. Please refer to [link to relevant documentation]. Figure 11 In this embodiment, the battery device 100 can be mounted on suspension components such as the shock absorber 721, elastic element 722, and swing arm, and the cavity 21 of the battery device 100 is a structure for accommodating such components. Please refer to [link to relevant documentation]. Figure 12 In some other embodiments, the chassis assembly 500 includes a steering knuckle 610 connected to the wheel 711, and the battery device 100 may be installed in the steering knuckle 610. Part of the structure of the steering knuckle 610 passes through or is embedded in the cavity 21.

[0059] Please refer to Figure 13In this embodiment, the structure of the battery device 100 is designed to overcome the limitations imposed on its structure by other components, allowing it to adapt to the structural environment near the wheel 711. The battery device 100 can be installed near the wheel 711, utilizing the limited space near the wheel 711, resulting in a more compact structure for the vehicle 1000. The distance between the battery device 100 and electrical components such as the drive motor 811 is small, and the electrical connection is tight. The signal transmission speed between the battery device 100 and the electrical components is fast, which improves the response speed of the vehicle 1000.

[0060] In this embodiment, the wheel 711 and the structure near the wheel 711 are defined as a travel angle module 710. The travel angle module 710 includes at least the wheel 711, a shock absorber 721, an elastic element 722, a control arm, a steering knuckle 610, a drive motor 811, a motor controller 812, and a brake caliper. In this embodiment, the travel angle module 710 may also include a portion of the subframe structure near the wheel 711, and may also include an anti-roll bar structure near one end of the wheel 711. In other embodiments, each travel angle module 710 may also include structures from the steering system and the transmission system.

[0061] In some embodiments, the vehicle 1000 is four-wheel drive, with each wheel 711 driven individually, giving the vehicle 1000 significant advantages in terms of power performance and safety performance. Each travel angle module 710 is equipped with at least one battery device 100 to provide electrical energy. The battery device 100 can adapt to the structure of the corresponding travel angle module 710 and make full use of the structure (i.e., mounting component) of the travel angle module 710. The assembly of the battery device 100 with the travel angle module 710 is less obstructed, and the battery device 100 can make full use of the small space around the wheel 711, thereby improving the integration level of the travel angle module 710. The vehicle 1000 does not require a large space to accommodate each battery device 100, nor does it require a dedicated structure for installing the battery device 100, thus reducing the structural complexity and design cost of the vehicle 1000. The distance between the battery device 100 and the drive motor 811, brake caliper, and other structures in the corresponding travel angle module 710 is small, the electrical connection is relatively tight, and the data transmission and current delivery are relatively fast, improving the response speed of the vehicle 1000 and enabling the movement state of the wheels 711 to be adjusted in a timely manner according to the driver's needs.

[0062] In this embodiment, the corresponding driving angle modules 710 and battery devices 100 can be collectively referred to as "vehicle angle modules 400", and the vehicle 1000 may include four vehicle angle modules 400. In this embodiment, the battery device 100 cooperates with the mounting component, and the battery device 100 is installed in the gaps between multiple components of the driving angle module 710. The structure of the vehicle angle module 400 is relatively compact, the space occupied by the vehicle angle module 400 is small, the integration degree is high, and the structural density is high. In this embodiment, the vehicle angle module 400 includes at least some structures of the driving assembly, powertrain, braking assembly, and steering system. Each vehicle angle module 400 can independently control the driving, braking, and steering states of the wheels 711. Each vehicle angle module 400 is less affected by other vehicle angle modules 400, thus improving the safety performance of the vehicle 1000.

[0063] This application embodiment also provides an electrical device, wherein a battery device 100 supplies power to the electrical device, which may be a vehicle 1000, an aircraft, a robot, a consumer electronic product, etc.

[0064] This application provides a battery device 100, which includes a housing 20 and a battery module 10. The housing 20 has cavities 21 extending through opposite sides of the housing 20. The housing 20 is circumferentially disposed around a portion of the boundary of the cavities 21. The housing 20 has two ends in its circumferential direction, spaced apart, with a gap between the two ends communicating with the cavities 21. The housing 20 includes an outer shell 25 and an inner shell 24, forming an internal space. The battery module 10 and other components of the battery device 100 are disposed within the internal space of the housing 20.

[0065] In this embodiment, the structure of the battery device 100 in the application environment can be inserted into or embedded in the cavity 21. The battery device 100 can be applied in environments with limited space and complex structures. The battery device 100 has a high adaptability to the application environment and can make full use of the space in the application environment. The battery device 100 occupies a small space. The structure of the battery device 100 makes the application environment have less restrictive effect on the battery device 100, making the application scenarios of the battery device 100 more diverse and its application range wider.

[0066] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.

[0067] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application 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. Therefore, they should not be construed as limitations on this application.

[0068] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A battery device, characterized in that, include: Battery module; as well as A housing having cavities extending through opposite sides of the housing, the housing surrounding a portion of the boundary of the cavities, and the housing being spaced apart at both ends in its circumferential direction; The housing includes an inner shell and an outer shell, with an internal space between the inner shell and the outer shell, and the battery module is disposed in the internal space of the housing.

2. The battery device as claimed in claim 1, characterized in that, The inner shell is disposed around a portion of the boundary of the cavity, and the outer shell is located on the side of the inner shell away from the cavity. The two ends of the outer shell correspond to the two ends of the inner shell, respectively. The inner shell and the outer shell are spaced apart to form the internal space of the shell, and the internal space of the shell surrounds a portion of the boundary of the cavity.

3. The battery device as claimed in claim 2, characterized in that, The battery module includes multiple battery cells, which are arranged along the circumferential direction of the housing and are arranged around a portion of the boundary of the cavity.

4. The battery device as claimed in claim 3, characterized in that, The battery cell is a cylindrical battery cell; The plurality of battery cells include a plurality of first cylindrical battery cells and a plurality of second cylindrical battery cells. The plurality of first cylindrical battery cells are arranged sequentially along the circumferential direction of the housing to form a first battery cell group, and the plurality of second cylindrical battery cells are arranged sequentially along the circumferential direction of the housing to form a second battery cell group. The second battery cell group is located outside the first battery cell group.

5. The battery device as claimed in claim 3, characterized in that, The inner shell includes a first connecting portion and two first flat portions, the two first flat portions being arranged at intervals relative to each other, and the first connecting portion connecting between the two first flat portions; the outer shell includes a second connecting portion and two second flat portions, the second connecting portion connecting between the two second flat portions.

6. The battery device as claimed in claim 5, characterized in that, The plurality of battery cells include a plurality of first square battery cells, wherein the plurality of first square battery cells are disposed between the first planar portion and the second planar portion, and the opposite sides of each first square battery cell are respectively attached to the first planar portion and the second planar portion.

7. The battery device as claimed in claim 6, characterized in that, The plurality of battery cells also include a plurality of second square battery cells, wherein a plurality of second square battery cells are disposed between the first connecting portion and the second connecting portion, and the opposite sides of each second square battery cell are in contact with the first connecting portion and the second connecting portion, respectively.

8. The battery device as claimed in claim 6, characterized in that, The plurality of battery cells also include a plurality of arc-shaped battery cells, which are disposed between the first connecting portion and the second connecting portion; the opposite sides of the arc-shaped battery cells are respectively provided with a first arc surface and a second arc surface, the first arc surface is attached to the first connecting portion, and the second arc surface is attached to the second connecting portion.

9. The battery device as claimed in claim 5, characterized in that, The housing also includes two encapsulation shells, with the first planar portion and the second planar portion corresponding to each other connected to opposite sides of the encapsulation shell.

10. The battery device as claimed in claim 2, characterized in that, The housing also includes two connecting shells, which are arranged at a distance from each other, and the inner shell and the outer shell are both located between the two connecting shells; Each connecting shell is connected to the inner shell on the side closest to the cavity, and to the outer shell on the side furthest from the cavity.

11. The battery device according to any one of claims 3 to 10, characterized in that, The battery device further includes a battery controller, which is arranged sequentially with a plurality of battery cells along the circumferential direction of the housing, and the battery controller is electrically connected to each of the plurality of battery cells.

12. The battery device according to any one of claims 1 to 10, characterized in that, The battery device further includes a cooling element disposed between the outer shell and the inner shell, the cooling element being arranged around the outer periphery of the inner shell, and each battery module being in contact with the cooling element.

13. The battery device according to any one of claims 1 to 10, characterized in that, The shell has a U-shaped or C-shaped structure.

14. A vehicle, characterized in that, include: Chassis assembly, the chassis assembly including mounting components; and The battery device as claimed in any one of claims 1 to 13, wherein the cavity of the battery device is used to receive the mounting member for mounting the battery device to the chassis assembly; The mounting components include at least one of the following vehicle structures: shock absorber, elastic element, control arm, and steering knuckle.

15. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 13.

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