Battery device, vehicle, and electric device

Abstract

The embodiment of the application relates to a battery device, a vehicle and a power utilization device, the battery device comprising a battery module and a shell, the shell being provided with a mounting space penetrating through opposite sides of the shell, and the shell surrounding the mounting space; 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. Under the arrangement of the embodiment, the battery device has higher adaptability to application environment, the application environment has smaller limiting effect on the battery device, and the application scenarios of the battery device are more abundant.

Description

Technical Field

[0001] This application relates to the field of battery system technology, and in particular to a battery device, vehicle, and 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 an installation space extending through opposite sides of the housing, and the housing surrounds the installation space. 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 arranged around the outer periphery of the installation space, and the outer shell is arranged around the outer periphery of the inner shell. The outer shell and the inner shell are spaced apart to form the internal space of the shell, and the internal space of the shell surrounds the installation space.

[0006] In some optional embodiments, the battery module includes a ring-shaped battery cell, which is disposed around the outer periphery of the inner shell and in contact with the inner shell.

[0007] In some optional embodiments, the battery module includes multiple annular cells; the multiple annular cells are arranged sequentially along the axial direction of the inner shell, and each annular cell is disposed around the outer periphery of the inner shell and in contact with the inner shell; or, the multiple annular cells are arranged sequentially along the radial direction of the inner shell, and among the multiple annular cells, the annular cell closest to the inner shell is in contact with the inner shell; two adjacent annular cells are in contact with each other.

[0008] In some optional embodiments, the battery module includes multiple battery cells arranged sequentially along the circumferential direction of the housing.

[0009] In some optional embodiments, the battery cell is a square battery cell, and multiple square battery cells are arranged sequentially along the circumferential direction of the housing, with the opposite sides of the square battery cells contacting the inner housing and the outer housing, respectively.

[0010] In some optional embodiments, the battery cell is an arc-shaped battery cell, and multiple arc-shaped battery cells are arranged sequentially along the circumferential direction of the shell; the opposite sides of the arc-shaped battery cell are respectively provided with a first arc surface and a second arc surface, the first arc surface is attached to the inner shell, and the second arc surface is attached to the outer shell.

[0011] In some optional embodiments, the battery cell is a cylindrical battery cell; the plurality of cylindrical battery cells include a plurality of first battery cells and a plurality of second battery cells, the plurality of first battery cells are arranged sequentially along the circumferential direction of the housing to form a first battery cell ring, the plurality of second battery cells are arranged sequentially along the circumferential direction of the housing to form a second battery cell ring, and the second battery cell ring is disposed around the outside of the first battery cell ring.

[0012] In some optional embodiments, the inner shell includes a plurality of first planar portions, which are sequentially connected and circumferentially disposed around the outer periphery of the mounting space; the outer shell includes a plurality of second planar portions, which are sequentially connected and circumferentially disposed around the outer periphery of the inner shell.

[0013] In some optional embodiments, a plurality of first planar portions correspond one-to-one with a plurality of second planar portions, and each first planar portion is arranged at a distance from its corresponding second planar portion.

[0014] In some optional embodiments, the battery module includes multiple battery cells arranged sequentially along the circumferential direction of the housing; the multiple battery cells correspond one-to-one with multiple first planar portions and one-to-one with multiple second planar portions, and the opposite sides of each battery cell are respectively attached to the corresponding first planar portion and second planar portion.

[0015] In some optional embodiments, the battery cell includes at least one of the following: trapezoidal battery cell and prismatic battery cell.

[0016] In some optional embodiments, the housing further includes two connecting shells, which are arranged at a distance from each other, with both the outer shell and the inner shell located between the two connecting shells; the side of each connecting shell closest to the installation space is connected to the inner shell, and the side of each connecting shell furthest from the installation space is connected to the outer shell.

[0017] 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 the battery module being in contact with the cooling element.

[0018] In some optional embodiments, the battery device further includes a battery controller, which is disposed around the outer periphery of the inner shell along with the battery module, and the battery controller is electrically connected to the battery module.

[0019] In some optional embodiments, the housing is provided with mounting openings that penetrate opposite sides of the housing and communicate with the mounting space.

[0020] Secondly, embodiments of this application provide a vehicle, which includes a chassis assembly and a battery device as described above. The chassis assembly includes a mounting component, and the mounting space of the battery device is used to accommodate the mounting component for mounting the battery device to the chassis assembly. The mounting component includes at least one of the following vehicle structures: a shock absorber, an elastic element, a control arm, and a steering knuckle.

[0021] Thirdly, embodiments of this application provide an electrical device, which includes the battery device mentioned above.

[0022] This application provides a battery device, which includes a housing and a battery module. The housing has mounting spaces extending through opposite sides of the housing, and the housing is circumferentially disposed within the mounting spaces. The housing includes an outer shell and an inner shell, which are spaced apart to define an internal space within the housing. The battery module is disposed within the internal space of the housing.

[0023] In this embodiment, the battery device itself has an installation space. The structure in the application environment of the battery device can be inserted into or embedded in the installation space. The battery device can be applied in environments with many structures and little usable space. The battery device has low requirements for the application environment and high adaptability to the application environment, making the application scenarios of the battery device more diverse and its application range wider. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the battery device and housing provided in the embodiments of this application.

[0026] Figure 2 yes Figure 1 The diagram shows the structure of the first and second housing parts of the shell.

[0027] Figure 3 yes Figure 1 The diagram shows the structure of the outer shell and inner shell of the casing.

[0028] Figure 4 yes Figure 1 The diagram shows a structural schematic of the first embodiment of the housing.

[0029] Figure 5 yes Figure 4 The diagram shows a structure with multiple circular battery cells in the housing.

[0030] Figure 6 yes Figure 4 The diagram shows another structural design of the housing, which includes multiple circular battery cells.

[0031] Figure 7 yes Figure 1 A schematic diagram of the second embodiment of the housing is shown.

[0032] Figure 8 yes Figure 1 The diagram shows a structural schematic of the third embodiment of the housing.

[0033] Figure 9 yes Figure 8 The diagram shows the structure of the arc-shaped battery cell inside the casing.

[0034] Figure 10 yes Figure 8 The diagram shows a structure in which two adjacent arc-shaped cells are attached or close together inside the casing.

[0035] Figure 11 yes Figure 1 The diagram shows a structural schematic of the fourth embodiment of the housing.

[0036] Figure 12 yes Figure 11 The diagram shows the structure of the first and second battery cell coils inside the housing.

[0037] Figure 13 yes Figure 1 The diagram shows a structural schematic of the fifth embodiment of the housing.

[0038] Figure 14 yes Figure 13 The diagram shows the assembly structure of the casing and the trapezoidal battery cell.

[0039] Figure 15 yes Figure 14 The diagram shows the structure of the trapezoidal battery cell inside the casing.

[0040] Figure 16 yes Figure 13 The diagram shows the assembly structure of the casing and the square battery cell.

[0041] Figure 17 yes Figure 1 The diagram shows the structural schematic of the connecting shell of the shell.

[0042] Figure 18 yes Figure 1 The diagram shows a cross-sectional view of the battery device and a structural schematic of the cooling component.

[0043] Figure 19 This is a schematic diagram of the vehicle structure provided in the embodiments of this application.

[0044] Figure 20 yes Figure 19 The diagram shows a partial structural schematic of the suspension components of the chassis assembly.

[0045] Figure 21 yes Figure 19 The diagram shows the structure of the steering knuckle and battery unit in the chassis assembly.

[0046] Figure 22 yes Figure 19 The diagram shows the structural schematics of the vehicle's driving angle module and overall vehicle angle module.

[0047] 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, Circular cell; 12, Square cell; 13, Curved cell; 131, First arc surface ; 132, Second arc surface; 14, Cylindrical cell; 141, First cell coil; 1411, First cell; 142, Second cell coil; 1421, Second cell; 15, Trapezoidal cell; 151, Bottom surface; 152, Top surface; 20, Housing; 21, Installation space; 24, Inner shell; 243, First flat portion; 25, Outer shell; 253, Second flat portion; 26, Connecting shell; 30, Battery controller; 40, Cooling component. Detailed Implementation

[0048] 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.

[0049] Please see Figure 1 , Figure 2 and Figure 3This 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 mounting spaces 21 extending through opposite sides of the housing 20, and the housing 20 is arranged in a ring around the outer periphery of the mounting spaces 21, forming a ring structure relative to the mounting spaces 21. 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. The battery cells can be selected from circular toroidal cells 11, square cells 12, arc-shaped cells 13, cylindrical cells 14, etc. In this embodiment, the structure in the application environment of the battery device 100 can be installed in or embedded in the installation space 21. The battery device 100 can be applied in environments with many structures and little usable space. The battery device 100 has low requirements for the application environment and high adaptability to the application environment, making the application scenarios of the battery device 100 more diverse and its application range wider.

[0050] In this embodiment, the mounting space 21 is a space with a closed outer perimeter. The mounting space 21 is generally a through-hole structure, and structures in the application environment can pass through the mounting space 21. The battery device 100 has a high degree of compatibility with other structures, and the battery device 100 is not easily detached from other structures, resulting in high connection stability of the battery device 100. This application embodiment does not limit the structure and shape of the housing 20. The housing 20 can be a surrounding structure relative to the mounting space 21. The mounting space 21 can be located in the middle of the housing 20 or at the edge of the housing 20.

[0051] In this embodiment, the housing 20 includes an inner shell 24 and an outer shell 25. Both the inner shell 24 and the outer shell 25 are annular structures. The inner shell 24 is arranged around the outer periphery of the mounting space 21, and the outer shell 25 is arranged around the outer periphery of the inner shell 24. The outer shell 25 and the inner shell 24 are spaced apart to define the internal space of the housing 20. 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. In some other embodiments, the inner shell 24 is an annular structure, while the outer shell 25 can be an annular structure with a notch, with its two ends connected to different positions on the outer periphery of the inner shell 24. In some other embodiments, the outer shell 25 is an annular structure, while the inner shell 24 can be an annular structure with a notch, with its two ends connected to different positions on the inner periphery of the outer shell 25. In this embodiment, the housing 20, outer shell 25, and inner shell 24 are all annular structures. The inner shell 24 is arranged around the outer periphery of the mounting space 21. The mounting space 21 can be understood as the space defined by the inner shell 24 or the annular housing 20. In this application, the ring is configured to surround the space.

[0052] In this embodiment, the shape of the housing 20 is related to the shape of the outer shell 25 and the inner shell 24, and the number and shape of the battery module 10 are related to the shape of the housing 20. The outer shell 25 and the inner shell 24 can have various shapes. This embodiment introduces various structural situations of the housing 20 and the battery module 10 through the following multiple embodiments.

[0053] Please see Figure 4 In the first embodiment, the inner shell 24 extends along a first circumferential line (not shown in the figure) and is a circular annular structure. The outer shell 25 extends along a second circumferential line and is also a circular annular structure. The centers of the first and second circumferential lines approximately coincide, and the inner diameter of the first circumferential line is smaller than the inner diameter of the second circumferential line. In the first embodiment, the outer shell 20 is a circular annular structure, and the thickness of the annular structure in the radial direction of the inner shell 24 remains approximately constant. In other embodiments, the centers of the first and second circumferential lines may not coincide to adapt to the structure in the application environment.

[0054] In the first embodiment, the housing 20 is annular, and the battery cell is an annular battery cell 11. The annular battery cell 11 has a ring-shaped structure and is disposed inside the housing 20, surrounding the outer periphery of the inner housing 24 and contacting the inner housing 24. In the first embodiment, the annular battery cell 11 can adapt well to the shape of the housing 20, the installation steps are simple, and the position of the annular battery cell 11 is relatively stable and not easily shaken. In the first embodiment, the annular battery cell 11 can be in direct contact with the inner housing 24 or indirect contact, for example, a heat insulation layer (glass wool, polyurethane foam, etc.) is provided between the inner housing 24 and the annular battery cell 11. In the first embodiment, the annular battery cell 11 contacts the outer housing 25, which facilitates heat dissipation of the annular battery cell 11 and improves the space utilization of the housing 20, making the battery device 100 smaller in size.

[0055] Please see Figure 4 , Figure 5 and Figure 6 In this embodiment, the battery module 10 includes a single annular cell 11. In other embodiments, the battery module 10 includes multiple annular cells 11, which may be arranged sequentially along the circumference of the inner shell 24; or, the multiple annular cells 11 may be arranged sequentially along the radial direction of the inner shell 24, with the diameter of the multiple annular cells 11 gradually increasing along the axis away from the inner shell 24. Adjacent annular cells 11 are in contact with each other, and the annular cell 11 closest to the inner shell 24 is in contact with the inner shell 24, thereby making the structure of the battery device 100 more stable. In such embodiments, the multiple annular cells 11 are electrically connected sequentially.

[0056] Please see Figure 7 In the second embodiment, the housing 20 is annular, and the shapes of the outer shell 25 and the inner shell 24, as well as their relative positions, are roughly the same as in the first embodiment. The difference between the second and first embodiments is that the battery module 10 includes multiple battery cells, which are square battery cells 12. These square battery cells 12 are arranged sequentially along the circumferential direction of the housing 20. The square battery cells 12 are connected end-to-end, meaning the top cover of each square battery cell 12 is connected to the bottom cover of the adjacent square battery cell 12. In the second embodiment, the portion of the square battery cell 12 facing the inner shell 24 is in direct or indirect contact with the inner shell 24, and the portion of the square battery cell 12 facing the outer shell 25 is in direct or indirect contact with the outer shell 25. The outer shell 25 and the inner shell 24 clamp the two sides of the square battery cell 12, ensuring that the square battery cell 12 is stably installed inside the housing 20 and preventing it from shaking. In the second embodiment, the multiple square battery cells 12 are electrically connected sequentially.

[0057] Please see Figure 8 and Figure 9The third embodiment differs from the second embodiment in that the battery cell is an arc-shaped battery cell 13, and multiple arc-shaped battery cells 13 are arranged sequentially along the circumferential direction of the housing 20. In the third embodiment, a first arc surface 131 and a second arc surface 132 are respectively provided on both sides of the arc-shaped battery cell 13. The first arc surface 131 and the second arc surface 132 are arranged sequentially along the radial direction of the housing 20. The first arc surface 131 is located on the side of the arc-shaped battery cell 13 facing the inner housing 24 and is in contact with the inner housing 24 (directly or indirectly). The second arc surface 132 faces the side of the arc-shaped battery cell 13 facing the outer housing 25 and is in contact with the outer housing 25 (directly or indirectly). In the third embodiment, multiple arc-shaped battery cells 13 are electrically connected sequentially.

[0058] In the third embodiment, the curved battery cell 13 is curved to better adapt to the annular housing 20; the contact area between the curved battery cell 13 and the housing 20 is large, making the position of the curved battery cell 13 relative to the housing 20 more stable; the curved battery cell 13 fills a high degree of the internal space of the housing 20, 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 curved battery cells 13 can be fitted together to reduce the gaps inside the housing 20 and make full use of the internal space of the housing 20. In the third embodiment, multiple curved battery cells 13 can be sequentially fitted together to form a roughly complete annular structure. Please refer to [link to relevant documentation]. Figure 10 Multiple arc-shaped cells 13 can also form a ring structure with notches, and the notch positions can be used to accommodate other components of the battery device 100.

[0059] Please see Figure 11 In the fourth embodiment, the shapes of the outer shell 25 and the inner shell 24, and their relative positions, are largely the same as in the first embodiment. The difference between the fourth and first embodiments is that the battery cell is a cylindrical battery cell 14, and multiple cylindrical battery cells 14 are arranged within the internal space of the housing 20. In the fourth embodiment, the cylindrical battery cells 14 have a smaller volume, which allows them to better fill the internal space of the housing 20, avoiding large gaps.

[0060] Please see Figure 12 Specifically, the plurality of cylindrical battery cells 14 include a first battery cell 1411 and a second battery cell 1421, with the plurality of first battery cells 1411 arranged around each other to form a first battery cell ring 141; and the plurality of second battery cells 1421 arranged around each other to form a second battery cell ring 142. In some embodiments, the plurality of cylindrical battery cells 14 include a third battery cell, with the plurality of third battery cells arranged around each other to form a third battery cell ring. The second battery cell ring 142 is located outside the first battery cell ring 141. The third battery cell ring is located outside the second battery cell ring 142. In a fourth embodiment, the plurality of cylindrical battery cells 14 are connected in series.

[0061] Please see Figure 13 In the fifth embodiment, the inner shell 24 includes a plurality of first planar portions 243, which are sequentially connected and arranged around the outer periphery of the mounting space 21. The inner shell 24 is generally in the shape of a polygonal prism. The outer shell 25 includes a plurality of second planar portions 253, which are sequentially connected and arranged around the outer periphery of the inner shell 24. The outer shell 25 and the shell 20 are both in the shape of a polygonal prism. The number of first planar portions 243 is the same as the number of second planar portions 253. Each first planar portion 243 corresponds one-to-one with a corresponding second planar portion 253, and each first planar portion 243 is spaced apart from its corresponding second planar portion 253. The surface area of ​​the first planar portion 243 is smaller than the surface area of ​​the second planar portion 253. There are eight first planar portions 243 and eight second planar portions 253, so that the outer contour of the shell 20 is in the shape of an octagonal prism, and the contour of the mounting space 21 is also in the shape of an octagonal prism. In some other embodiments, the number of the first planar portion 243 and the second planar portion 253 can be specifically set according to the application scenario, such as 3, 4, 5, 6, 7, 9, 10, etc. In some other embodiments, the number of the first planar portion 243 and the second planar portion 253 can be different.

[0062] Please see Figure 14 In the fifth embodiment, the battery module 10 includes multiple battery cells arranged sequentially along the circumferential direction of the housing 20. The number of battery cells, the number of first planar portions 243, and the number of second planar portions 253 are the same. Each battery cell corresponds one-to-one with a plurality of first planar portions 243 and a plurality of second planar portions 253. Each battery cell has two sides facing the corresponding first planar portion 243 and the corresponding second planar portion 253, respectively. The surface of the battery cell facing the corresponding first planar portion 243 is flat and is (directly or indirectly) attached to the first planar portion 243. The surface of the battery cell facing the corresponding second planar portion 253 is flat and is (directly or indirectly) attached to the second planar portion 253. In the fifth embodiment, each battery cell is clamped by the corresponding first planar portion 243 and second planar portion 253, making the position of the battery module 10 more stable; the battery module 10 has a large contact area with the housing 20, which has a better 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 improving the integration degree of the battery device 100.

[0063] Please see Figure 15 and Figure 16In the fifth embodiment, the battery cell includes a trapezoidal battery cell 15. The trapezoidal battery cell 15 has a bottom surface 151 and a top surface 152 on both sides. The bottom surface 151 and top surface 152 are arranged sequentially along the radial direction of the housing 20. The area of ​​the top surface 152 is smaller than the area of ​​the bottom surface 151. When the trapezoidal battery cell 15 is installed inside the housing 20, the top surface 152 of the trapezoidal battery cell 15 is in contact with the corresponding first flat portion 243, and the bottom surface 151 of the trapezoidal battery cell 15 is in contact with the corresponding second flat portion 253. Adjacent trapezoidal battery cells 15 can be in contact with each other to improve the utilization rate of the internal space of the housing 20. The dimensions of the plurality of first flat portions 243 are approximately the same, and the included angle between adjacent first flat portions 243 is approximately the same. The dimensions of the plurality of second flat portions 253 are approximately the same, and the included angle between adjacent second flat portions 253 is approximately the same, so that the shape of the housing 20 is more regular. In other embodiments, the size of each first planar portion 243 can be specifically set according to actual conditions, and the size of each second planar portion 253 can be specifically set according to actual conditions.

[0064] Please see Figure 16 In the fifth embodiment, other types of battery cells can be selected, such as square battery cells 12. Square battery cells 12 have two opposing planar surfaces, and the two planar surfaces of square battery cells 12 are respectively attached to the corresponding first planar portion 243 and second planar portion 253.

[0065] In other embodiments of this application, the outer shell 25 and the inner shell 24 may have other shapes, and different shapes of the outer shell 25 and the inner shell 24 can be combined. As one example, both the outer shell 25 and the inner shell 24 are elliptical structures. As another example, the outer shell 25 is annular, and the inner shell 24 is elliptical. As another example, the outer shell 25 is square, and the inner shell 24 is annular. As another example, part of the structure of the outer shell 25 extends along a curve, and part of the structure extends along a straight line or a broken line, and the outer shell 25 is annular. In such embodiments, the shape of the battery module 10 is set according to the outer shell 25 and the inner shell 24. The battery device 100 can simultaneously use different types of battery cells, for example, it can simultaneously use square battery cells 12 and cylindrical battery cells 14. The cylindrical battery cells 14 can be used to fill the gaps between the square battery cells 12 to improve the utilization rate of the internal space of the housing 20.

[0066] Please see Figure 7 and Figure 8The battery device 100 may further include a battery controller 30. The battery controller 30 and multiple battery cells of the battery module 10 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 also 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. In the first embodiment, the battery controller 30 and the annular battery cells 11 may be installed inside the housing 20 or outside the housing 20.

[0067] Please see Figure 17 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 have an annular structure. The two connecting shells 26, the outer shell 25, and the inner shell 24 together define the internal space of the housing 20. Specifically, the side of each connecting shell 26 closest to the mounting space 21 is connected to the inner shell 24, and the side of each connecting shell 26 furthest from the mounting space 21 is connected to the outer shell 25. This makes the structure of the housing 20 more stable and provides a higher degree of sealing, effectively protecting the battery module 10. In this embodiment, the two connecting shells 26 have approximately the same shape and size, and both the inner shell 24 and the outer shell 25 have a columnar structure. In other embodiments, the two connecting shells 26 have different shapes and sizes; the inner shell 24 may have a frustum-shaped structure, and the outer shell 25 may also have a frustum-shaped structure.

[0068] Please see Figure 18In 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 ring-shaped structure and is located between the outer shell 25 and the inner shell 24, encircling the outer periphery of the inner shell 24. 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 ring-shaped 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 component 40 may include a plurality of cooling structures arranged sequentially along the outer periphery of the inner shell 24, and each cooling structure is in contact with the battery module 10.

[0069] In some embodiments, the housing 20 may also be an incomplete annular structure, with mounting openings extending through opposite sides of the housing 20 and communicating with the mounting space 21. External structures can move into the mounting space 21 via these mounting openings. In this embodiment, the size of the mounting openings can be set to be relatively small, so that the structure of the housing 20 surrounds the mounting space 21 to a greater extent, thereby improving the connection stability between the housing 20 and the external structure.

[0070] Please see Figure 19 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 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 20 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 mounting space 21 of the battery device 100 is used to accommodate the structure of such components. Please refer to [link to relevant documentation]. Figure 21 In some other embodiments, the chassis assembly 500 includes a steering knuckle 610 connected to a wheel 711, a battery device 100 which can be mounted on the steering knuckle 610, and a portion of the steering knuckle 610 passing through the mounting space 21.

[0071] In 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 around it, 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 810 is small, and the electrical connection is tight. This leads to faster signal transmission between the battery device 100 and the electrical components, improving the response speed of the vehicle 1000.

[0072] Please see Figure 22 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.

[0073] 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.

[0074] 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.

[0075] This application embodiment also provides an electrical device, wherein a battery device 100 supplies power to the electrical device, which may be a vehicle, aircraft, robot, consumer electronics, etc.

[0076] This application provides a battery device 100, which includes a housing 20 and a battery module 10. The housing 20 has mounting spaces 21 extending through opposite sides of the housing 20, and the housing 20 is arranged around the mounting spaces 21. 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 is disposed in the internal space of the housing 20.

[0077] In this embodiment, the battery device 100 has an installation space 21. The structures in the application environment of the battery device 100 can be inserted into or embedded in the installation space 21. The battery device 100 can be applied in environments with many structures and little usable space. The battery device 100 has low requirements for the application environment and high adaptability to the application environment, making the application scenarios of the battery device 100 more diverse and its application range wider.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 mounting spaces extending through opposite sides of the housing, the housing surrounding the mounting spaces; 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 the outer periphery of the installation space, and the outer shell is disposed around the outer periphery of the inner shell. The outer shell and the inner shell are spaced apart to form the internal space of the housing, and the internal space of the housing surrounds the installation space.

3. The battery device as claimed in claim 2, characterized in that, The battery module includes a circular cell, which is arranged around the outer periphery of the inner shell and in contact with the inner shell.

4. The battery device as claimed in claim 2, characterized in that, The battery module includes multiple circular ring cells; Multiple ring-shaped cells are arranged sequentially along the axial direction of the inner shell, with each ring-shaped cell surrounding the outer periphery of the inner shell and in contact with the inner shell; or, The plurality of circular cells are arranged in sequence along the radial direction of the inner shell. Among the plurality of circular cells, the circular cell closest to the inner shell is in contact with the inner shell; two adjacent circular cells are in contact with each other.

5. The battery device as claimed in claim 2, characterized in that, The battery module includes multiple battery cells, which are arranged sequentially along the circumferential direction of the housing.

6. The battery device as claimed in claim 5, characterized in that, The battery cell is a square battery cell, and multiple square battery cells are arranged sequentially along the circumferential direction of the housing. The opposite sides of the square battery cells are in contact with the inner housing and the outer housing, respectively.

7. The battery device as claimed in claim 5, characterized in that, The battery cell is an arc-shaped battery cell, and multiple arc-shaped battery cells are arranged sequentially along the circumferential direction of the housing; the opposite sides of the arc-shaped battery cell are respectively provided with a first arc surface and a second arc surface, the first arc surface is attached to the inner shell, and the second arc surface is attached to the outer shell.

8. The battery device as claimed in claim 5, characterized in that, The battery cell is a cylindrical battery cell; The plurality of cylindrical battery cells include a plurality of first battery cells and a plurality of second battery cells. The plurality of first battery cells are arranged sequentially along the circumferential direction of the housing to form a first battery cell ring. The plurality of second battery cells are arranged sequentially along the circumferential direction of the housing to form a second battery cell ring. The second battery cell ring is disposed around the outside of the first battery cell ring.

9. The battery device as claimed in claim 2, characterized in that, The inner shell includes a plurality of first planar portions, which are sequentially connected and arranged around the outer periphery of the mounting space; The outer shell includes a plurality of second planar portions, which are sequentially connected and arranged around the outer periphery of the inner shell.

10. The battery device as claimed in claim 9, characterized in that, Each of the first planar portions corresponds to one of the second planar portions, and each first planar portion is arranged at a distance from its corresponding second planar portion.

11. The battery device as claimed in claim 10, characterized in that, The battery module includes multiple battery cells, which are arranged sequentially along the circumferential direction of the housing. Each of the multiple battery cells corresponds one-to-one with a multiple of the first planar portions, and each of the multiple battery cells corresponds one-to-one with a multiple of the second planar portions. The opposite sides of each battery cell are respectively attached to the corresponding first planar portion and the second planar portion.

12. The battery device as claimed in claim 11, characterized in that, The battery cell includes at least one of the following: trapezoidal battery cell and square battery cell.

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

14. The battery device according to any one of claims 1 to 13, characterized in that, The battery device further includes a cooling component, which is disposed between the outer shell and the inner shell, and is arranged around the outer periphery of the inner shell. The battery module is in contact with the cooling component.

15. The battery device according to any one of claims 5 to 8, 11, and 12, characterized in that, The battery device further includes a battery controller, which is disposed around the outer periphery of the inner shell along with the battery module, and the battery controller is electrically connected to the battery module.

16. The battery device as claimed in claim 1, characterized in that, The housing is provided with mounting openings that extend through opposite sides of the housing, and the mounting openings are in communication with the mounting space.

17. 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 16, wherein the mounting space 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.

18. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 16.

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