Battery device and electric device

Abstract

The application relates to the battery technical field and discloses a battery device and a power utilization device, which comprise a plurality of battery monomers, a box body, the box body comprising a side frame beam, the side frame beam comprising a frame beam body, a mounting panel and a plurality of mounting structures, the frame beam body being formed with an assembly gap, the mounting panel being mounted on the assembly gap, and part of the plurality of mounting structures being fixed to the frame beam body, and another part of the plurality of mounting structures being fixed to the mounting panel. Thus, by fixing part of the mounting structures to the mounting panel, the interval distance between the mounting structures on the mounting panel and the frame beam body is increased, the arrangement of the sealing gasket between the box cover and the side frame beam is facilitated, the assembly efficiency of the battery device is improved, the width size of the sealing gasket at the connection between the mounting panel and the frame beam body is increased, the sealing property between the box cover and the side frame beam is improved, and the sealing property of the battery device is improved.

Description

Technical Field

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

[0002] As the safety and reliability requirements of new energy vehicles become increasingly stringent, the structural strength requirements for battery devices also become higher. In order to ensure the reliability of the entire vehicle, the battery device, as an important functional component of the vehicle, is required to meet the structural strength requirements of the battery device itself, as well as the strength requirements for its compatibility with the vehicle, due to its large size, high weight ratio, and large space occupation. The connection strength requirements between the battery device and the vehicle are becoming increasingly stringent.

[0003] In related technologies, the battery device includes a housing, which comprises a cover and a main body. The side frame beams of the main body have multiple mounting structures for mounting the battery device to the vehicle. These mounting structures are arranged sequentially along the extension direction of the side frame beams. The multiple mounting structures increase the occupation of the limited installation space on the side frame beams. Furthermore, the side frame beams have mounting panels for mounting components such as high-voltage sockets and water inlets / outlets. Mounting structures are located on both sides of the mounting panel along the extension direction of the side frame beams. Given the limited vehicle space and the increased number of mounting points, the mounting panel is too close to adjacent mounting structures. When a sealing gasket is installed between the cover and the side frame beams, the design of the gasket becomes difficult, affecting the assembly efficiency of the battery device. Moreover, the sealing gasket is narrow at the connection between the mounting panel and the side frame beams, affecting the sealing performance between the cover and the side frame beams. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a battery device that facilitates the arrangement of the sealing gasket between the cover and the side frame beam, thereby improving the assembly efficiency of the battery device, and also facilitates increasing the width of the sealing gasket at the connection between the mounting panel and the side frame beam body, thereby improving the sealing performance between the cover and the side frame beam.

[0005] This application also proposes an electrical device.

[0006] In a first aspect, embodiments of this application provide a battery device, including:

[0007] Multiple battery cells;

[0008] The enclosure contains multiple battery cells. The enclosure includes side frame beams, each comprising a frame beam body, a mounting panel, and multiple mounting structures. The mounting structures extend along the height of the battery unit, and the multiple mounting structures are arranged sequentially at intervals along the extension direction of the side frame beams. The frame beam body has an assembly notch, and the mounting panel is installed in the assembly notch and fixed to the frame beam body. The mounting panel is used to install components of the battery unit. Parts of the multiple mounting structures are fixed to the frame beam body, and another part of the multiple mounting structures is fixed to the mounting panel.

[0009] In the above technical solution, by fixing part of the mounting structure to the mounting panel, it is beneficial to increase the spacing between the mounting panel and the adjacent mounting structure on the side beam body, which facilitates the arrangement of the sealing gasket between the cover and the side beam, thereby improving the assembly efficiency of the battery device. Furthermore, it is beneficial to increase the width of the sealing gasket at the connection between the mounting panel and the side beam body, thereby improving the sealing performance between the cover and the side beam, and thus improving the sealing performance of the battery device.

[0010] In some embodiments, the side frame beam body is provided with multiple mounting structures, and an assembly notch is formed between two adjacent mounting structures of the side frame beam body along the extension direction of the side frame beam.

[0011] In the above technical solution, by positioning the assembly notch between two adjacent mounting structures on the side beam body, the assembly notch and the mounting structures on the side beam body can be staggered along the extension direction of the side beam. After the mounting panel is installed in the assembly notch, the risk of interference between the mounting panel and the mounting structures on the side beam body is reduced, thus making the setting position of the assembly notch reasonable.

[0012] In some embodiments, the upper surface of the mounting panel and the upper surface of the frame beam body are coplanar along the height direction of the battery device.

[0013] In the above technical solution, by making the upper surface of the mounting panel and the upper surface of the side beam body coplanar, the upper end of the mounting panel and the upper end of the side beam body can be flush, reducing the difficulty of arranging the sealing gasket and making it easier to set the sealing gasket between the cover and the side beam. This is more conducive to improving the assembly efficiency of the battery device. Furthermore, it is beneficial to arrange the sealing gasket flush at the upper end of the mounting panel and the upper end of the side beam body, which is more conducive to improving the sealing performance between the cover and the side beam, and thus more conducive to improving the sealing performance of the battery device.

[0014] In some embodiments, the mounting structure on the mounting panel is integrally formed with the mounting panel.

[0015] In the above technical solution, by integrally molding the mounting panel and the corresponding mounting structure, the mounting panel and the corresponding mounting structure can be integrated. Compared with the mounting panel and the corresponding mounting structure being separate parts, the connection between the mounting panel and the corresponding mounting structure can be sealed, improving the overall structural sealing performance of the mounting panel and the corresponding mounting structure. This improves the sealing performance of the side frame beam, which helps the side frame beam meet the sealing requirements, thereby further improving the sealing performance of the battery device. In addition, it can also improve the connection strength between the mounting panel and the corresponding mounting structure, reducing the risk of separation between the mounting panel and the corresponding mounting structure.

[0016] In some embodiments, the side frame beam further includes: a first reinforcing structure along the height direction of the battery device, the first reinforcing structure being located above the frame beam body, a plurality of mounting structures including a plurality of first mounting structures, the plurality of first mounting structures being disposed on the frame beam body, the upper part of the first mounting structure forming a first protruding section extending out of the upper surface of the frame beam body, the first reinforcing structure extending along the extension direction of the side frame beam and fixed to the frame beam body, and the first protruding section passing through the first reinforcing structure.

[0017] In the above technical solution, by setting a first reinforcing structure, the first extension section passes through the first reinforcing structure along the height direction of the battery device. The first reinforcing structure can support the first extension section of the first mounting structure, which is conducive to reducing the cantilever length of the first extension section, thereby improving the structural strength of the first extension section, reducing the risk of deformation and breakage of the first extension section, thereby improving the reliability of the first mounting structure, and further improving the assembly reliability of the battery device and the vehicle.

[0018] In some embodiments, the first reinforcing structure includes: a first plate and two second plates, the two second plates being opposite to and spaced apart along a first direction, both second plates being fixed to the side frame beam body, the first plate being connected between the two second plates, the first plate and the side frame beam body being spaced apart along the height direction of the battery device, a first protruding section passing through the first plate, the first direction, the height direction of the battery device and the extension direction of the side frame beam being perpendicular to each other.

[0019] In the above technical solution, the first reinforcing structure includes a first plate and two second plates. The two second plates are opposite to each other and spaced apart. Both second plates are fixed to the frame beam body. The first plate is connected between the two second plates. The first protruding section passes through the first plate. The two second plates simultaneously support the first plate, so that the first plate reliably supports the first protruding section, thereby making the structural design of the first reinforcing structure reasonable.

[0020] In some embodiments, the first reinforcing structure and the frame beam body are integrally formed.

[0021] In the above technical solution, by integrally molding the first reinforcing structure and the frame beam body, the connection strength between the first reinforcing structure and the frame beam body can be improved, the risk of separation between the first reinforcing structure and the frame beam body can be reduced, and the frame beam body can reliably support the first reinforcing structure, improve the structural strength of the first reinforcing structure, reduce the risk of deformation of the first reinforcing structure, so that the first reinforcing structure can more reliably support the first protruding section. At the same time, it can also reduce the number of components that make up the side frame beam, which facilitates the production and manufacturing of the side frame beam.

[0022] In some embodiments, the side frame beam further includes: a second reinforcing structure along the height direction of the battery device, at least a portion of the second reinforcing structure being located above the mounting panel, the second reinforcing structure extending along the extension direction of the side frame beam and fixed to the first reinforcing structure, a plurality of mounting structures including the second mounting structure, the second mounting structure being disposed on the mounting panel, the upper part of the second mounting structure forming a second protruding section extending out of the upper surface of the mounting panel, the second protruding section passing through the second reinforcing structure.

[0023] In the above technical solution, by setting a second reinforcing structure, which is fixed to the first reinforcing structure, and with the second protruding section passing through it, the second reinforcing structure can support the second protruding section of the second mounting structure on the mounting panel. This helps to reduce the cantilever length of the second protruding section, thereby improving its structural strength and reducing the risk of deformation and breakage. This, in turn, improves the reliability of the second mounting structure on the mounting panel, further enhancing the assembly reliability of the battery device and the vehicle. Furthermore, the second reinforcing structure's support for the second protruding section of the second mounting structure improves the structural stability of the mounting panel, thereby strengthening its load-bearing capacity and ensuring that the mounting panel meets the mounting requirements.

[0024] In some embodiments, the second reinforcing structure includes: a structural body arranged along the extension direction of the side frame beam and two mounting ears, the structural body being connected between the two mounting ears, the structural body corresponding to the mounting panel along the height direction of the battery device, the two mounting ears being located above the first reinforcing structure and fixed to the first reinforcing structure, the mounting ears having a first protruding section and a second protruding section passing through the structural body.

[0025] In the above technical solution, the first extension of the first mounting structure passes through the second reinforcing structure along the height direction of the battery device, and the second extension passes through the main body of the structure. The second reinforcing structure can support the first extension of the first mounting structure, which helps to further reduce the cantilever length of the first extension, thereby improving the structural strength of the first extension and reducing the risk of deformation and breakage. This further improves the reliability of the first mounting structure and, consequently, the assembly reliability of the battery device and the vehicle. Furthermore, the first extension can limit the position of the second reinforcing structure, improving its positional stability and thus enhancing the connection reliability between the second and first reinforcing structures. This further improves the structural strength of the second extension, reduces the risk of deformation and breakage, and ultimately improves the reliability of the second mounting structure.

[0026] In some embodiments, the mounting ear has a first through hole, and the main body of the structure has a second through hole. Both the first through hole and the second through hole penetrate the second reinforcing structure along the height direction of the battery device. The first through hole is for a corresponding first protruding section to pass through, and the second through hole is for a corresponding second protruding section to pass through.

[0027] In the above technical solution, a first through hole and a second through hole are formed by the mounting ear and the main body of the structure, respectively. The first protruding section passes through the first through hole and the second protruding section passes through the second through hole, so as to achieve the effect that the first protruding section of the first mounting structure on the frame beam body passes through the second reinforcing structure, and also to achieve the effect that the second protruding section of the second mounting structure on the mounting panel passes through the second reinforcing structure, which facilitates the assembly of the second reinforcing structure and the corresponding mounting structure.

[0028] In some embodiments, the first reinforcing structure has a clearance opening that extends through the first reinforcing structure along the height direction of the battery device, and the clearance opening and the mounting notch are opposite each other along the height direction of the battery device, and at least a portion of the second reinforcing structure is mounted on the clearance opening.

[0029] In the above technical solution, by setting the clearance opening and the assembly notch to be opposite each other along the height direction of the battery device, the clearance opening and the assembly notch can be connected. During the process of assembling the mounting panel into the assembly notch, the mounting structure on the mounting panel can be assembled into the clearance opening, so that the second mounting structure on the mounting panel passes through the clearance opening along the height direction of the battery device. The first reinforcing structure can avoid the second mounting structure on the mounting panel, reducing the risk of interference between the first reinforcing structure and the second mounting structure on the mounting panel, thereby facilitating the assembly of the mounting panel into the assembly notch, which in turn helps to improve the assembly efficiency of the side frame beam. Furthermore, by installing at least part of the second reinforcing structure into the clearance opening, it is beneficial to improve the structural compactness of the side frame beam.

[0030] In some embodiments, the mounting panel includes: a connected panel end wall and an annular wall, the panel end wall being used to mount components, a mounting cavity for mounting battery cells being formed inside the housing, the mounting cavity being adjacent to a side frame beam, the annular wall being disposed around the panel end wall along the circumferential edge of the panel end wall and extending toward the mounting cavity, the side frame beam body having an inner surface close to the mounting cavity in the direction from the side frame beam to the mounting cavity, the annular wall being located on the side of the inner surface facing away from the mounting cavity, and the annular wall and the side frame beam body being sealed together.

[0031] In the above technical solution, the sealing connection between the annular wall and the frame beam body is achieved, thereby sealing the adjacent connection between the mounting panel and the frame beam body, improving the sealing performance at the connection between the mounting panel and the frame beam body, and further improving the sealing performance of the side frame beam. This makes it more conducive to the side frame beam meeting the sealing requirements, thereby further improving the sealing performance of the battery device and reducing the external environmental risks of the side frame beam connecting the mounting cavity and the battery device.

[0032] In some embodiments, the annular wall further includes a panel bottom wall and a panel top wall, the panel bottom wall and the panel top wall being opposite to and spaced apart along the height direction of the battery device, and the plurality of mounting structures including a second mounting structure, the second mounting structure being disposed on the mounting panel, and the second mounting structure passing through the panel bottom wall and the panel top wall.

[0033] In the above technical solution, by having a second mounting structure installed on the mounting panel and passing through the bottom and top walls of the panel, part of the structure of the second mounting structure can be located inside the mounting panel. Compared with the second mounting structure being located outside the mounting panel, this can improve the overall structural compactness of the mounting panel and the second mounting structure. Furthermore, the bottom and top walls of the panel can simultaneously support the second mounting structure, which can enhance the second mounting structure's ability to bear the load.

[0034] In some embodiments, the mounting panel further includes a mounting portion along the arrangement direction of the mounting cavity and the side frame beams. The mounting portion is located on the side of the panel end wall near the mounting cavity and is integrally formed with the panel end wall. The mounting panel has a mounting groove extending along the arrangement direction of the mounting cavity and the side frame beams. The mounting groove extends from the panel end wall to the corresponding mounting portion. The mounting groove is used to install fasteners for fixing components.

[0035] In the above technical solution, by integrally forming the mounting part with the end wall of the panel, and by extending the mounting groove from the end wall of the panel to the corresponding mounting part, the mounting groove can be kept out of communication with the mounting cavity. After the components of the battery device are installed on the mounting panel by fasteners, the fasteners do not need to be sealed, thereby reducing the assembly difficulty of the battery device components.

[0036] Secondly, embodiments of this application provide an electrical device, including the battery device described above.

[0037] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0038] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0039] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0040] Figure 2 This is an exploded view of the battery device housing according to an embodiment of this application;

[0041] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0042] Figure 4 This is a schematic diagram of the box body according to an embodiment of this application;

[0043] Figure 5 yes Figure 4 Enlarged view at point B in the middle;

[0044] Figure 6 This is a side view of the main body of the box according to an embodiment of this application;

[0045] Figure 7 This is an exploded view of the main body of the box according to an embodiment of this application;

[0046] Figure 8 yes Figure 7 Enlarged view at point C;

[0047] Figure 9 This is an exploded view of the side frame beam according to an embodiment of this application;

[0048] Figure 10 yes Figure 9 Enlarged view at point D;

[0049] Figure 11 This is a schematic diagram of the mounting panel according to an embodiment of this application;

[0050] Figure 12 This is another schematic diagram of the mounting panel according to an embodiment of this application;

[0051] Figure 13 This is another schematic diagram of the mounting panel according to an embodiment of this application;

[0052] Figure 14 This is a schematic diagram of the second reinforcing structure according to an embodiment of this application;

[0053] Figure 15 This is a schematic diagram of a battery cell according to an embodiment of this application.

[0054] Figure label:

[0055] Battery device 100;

[0056] 10 battery cells;

[0057] Box 20;

[0058] Side frame beam 21;

[0059] Frame beam body 211; Assembly notch 2111; Weight reduction space 2112; Inner surface 2113;

[0060] Mounting panel 212; panel end wall 2121; annular wall 2122; panel bottom wall 2123; panel side wall 2124; panel top wall 2125; mounting part 2126; mounting groove 2127; receiving groove 2128;

[0061] Mounting structure 213; First extension section 2131; Second extension section 2132; Mounting hole 2133;

[0062] First mounting structure 214; Second mounting structure 215;

[0063] First reinforcing structure 22; First plate 221; Second plate 222; Clearance opening 223;

[0064] Second reinforcing structure 23; First through hole 231; Second through hole 232; First assembly hole 233; Assembly part 234; Second assembly hole 235; Main body 236; Mounting ear 237;

[0065] 24. Box lid; 25. Box body; 26. Sealing gasket; 27. Mounting cavity;

[0066] Second bolt 30;

[0067] Vehicle 200; Controller 201; Motor 202. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0069] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0070] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0071] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0072] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, R and / or S can represent: R existing alone, R and S existing simultaneously, or S existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0073] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0074] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0075] In this application, "multiple" means two or more (including two).

[0076] The battery device mentioned in the embodiments of this application may include multiple battery cells, which are connected in series, parallel or mixed connection through a busbar component.

[0077] In some embodiments, the battery device includes a housing and a plurality of battery cells housed within the housing.

[0078] As an example, the enclosure may include a lid and a body. The lid and body snap together to form a mounting cavity inside the enclosure, which can accommodate multiple battery cells; that is, multiple battery cells are installed within the mounting cavity. Here, "enclosed" refers to covering or closing, and can be either sealed or unsealed.

[0079] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0080] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0081] Battery cells can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to any of these. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to any of these types either.

[0082] A battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of an anode electrode, a cathode electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the anode and cathode electrodes. The anode electrode includes an anode current collector and an anode active material layer. The anode active material layer is coated on the surface of the anode current collector. The uncoated anode current collector protrudes beyond the coated anode current collector and serves as the anode tab. Taking a lithium-ion battery as an example, the anode current collector can be made of aluminum, and the anode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The cathode electrode includes a cathode current collector and a cathode active material layer. The cathode active material layer is coated on the surface of the cathode current collector. The uncoated cathode current collector protrudes beyond the coated cathode current collector and serves as the cathode tab. The cathode current collector can be made of copper, and the cathode active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, there are multiple anode tabs stacked together, and there are multiple cathode tabs stacked together.

[0083] The material of the separator can be PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0084] In recent years, the vehicle industry has developed rapidly. Taking new energy vehicles as an example, the battery device, as a core component of the vehicle, plays an irreplaceable and important role.

[0085] In related technologies, the battery device includes a housing, which comprises a cover and a main body. The side frame beams of the main body have multiple mounting structures for mounting the battery device to the vehicle. These mounting structures are arranged sequentially along the extension direction of the side frame beams. The multiple mounting structures increase the occupation of the limited installation space on the side frame beams. Furthermore, the side frame beams have mounting panels for mounting components such as high-voltage sockets and water inlets / outlets. Mounting structures are located on both sides of the mounting panel along the extension direction of the side frame beams. Given the limited vehicle space and the increased number of mounting points, the mounting panel is too close to adjacent mounting structures. When a sealing gasket is used between the cover and the side frame beams, the gasket is located between the surface of the cover facing the side frame beams and the upper surface of the side frame beams. This makes gasket design difficult, affecting the assembly efficiency of the battery device. Additionally, the narrow width of the gasket at the connection between the mounting panel and the side frame beams affects the sealing performance between the cover and the side frame beams.

[0086] Based on the above considerations, to address the difficulties in designing the sealing gasket and the poor sealing between the cover and the side frame beams, a battery device was designed after in-depth research. The device includes: multiple battery cells; a housing containing the battery cells; and side frame beams, each comprising a beam body, a mounting panel, and multiple mounting structures. These mounting structures extend along the height of the battery device and are arranged sequentially at intervals along the beam's extension direction. The beam body has an assembly notch, and the mounting panel is installed in the notch and fixed to the beam body. The mounting panel is used to mount components of the battery device. Parts of the mounting structures are fixed to the beam body, and another part is fixed to the mounting panel. By fixing some mounting structures to the mounting panel, the spacing between adjacent mounting structures on the beam body and the mounting panel is increased, facilitating the arrangement of the sealing gasket between the cover and the side frame beams. This improves the assembly efficiency of the battery device and increases the width of the sealing gasket at the connection between the mounting panel and the beam body, thus improving the sealing between the cover and the side frame beams, and consequently, the overall sealing performance of the battery device.

[0087] Please refer to Figure 1 , Figure 1The diagram below illustrates the structure of a vehicle 200, which is an electrical device provided in some embodiments of this application. The vehicle 200 can be a gasoline-powered vehicle or a new energy vehicle; a new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is mounted on the chassis of the vehicle 200. The battery device 100 can be used to power the vehicle 200 and can serve as the operating power source for the vehicle 200. The vehicle 200 may also include a controller 201 and a motor 202. The controller 201 controls the battery device 100 to supply power to the motor 202 for the vehicle 200's starting, navigation, and driving power needs.

[0088] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 200, but also as the driving power source for the vehicle 200, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 200.

[0089] The following is for reference. Figures 2-10 A battery device 100 according to an embodiment of this application is described.

[0090] like Figures 2-10 As shown, the battery device 100 according to an embodiment of this application includes:

[0091] Multiple battery cells 10;

[0092] The housing 20 houses multiple battery cells 10. The housing 20 includes a side frame beam 21, which includes a frame beam body 211, a mounting panel 212, and multiple mounting structures 213. The mounting structures 213 extend along the height direction of the battery device 100. The multiple mounting structures 213 are arranged sequentially at intervals along the extension direction of the side frame beam 21. The frame beam body 211 has an assembly notch 2111. The mounting panel 212 is installed in the assembly notch 2111 and fixed to the frame beam body 211. The mounting panel 212 is used to install components of the battery device 100. Part of the multiple mounting structures 213 is fixed to the frame beam body 211, and another part of the multiple mounting structures 213 is fixed to the mounting panel 212.

[0093] The battery assembly 100 includes a housing 20 and a plurality of battery cells 10. The housing 20 may include a cover 24 and a body 25, which are fastened and fixedly assembled, together defining a mounting cavity 27. The plurality of battery cells 10 are disposed within the mounting cavity 27 of the housing 20. Figures 1-3As shown, the main body 25 includes a side frame beam 21, which can be a metal component and can serve as the sidewall of the mounting cavity 27. The side frame beam 21 includes a frame beam body 211, a mounting panel 212, and multiple mounting structures 213. For example, the mounting structure 213 is a mounting sleeve extending along the height direction of the battery device 100. The mounting sleeve has a mounting hole 2133 extending through it along the height direction of the battery device 100. Fasteners (for example, a first bolt) pass through the mounting hole 2133 from below the mounting sleeve and are connected to the vehicle frame, thereby fixing the battery device 100 to the vehicle 200.

[0094] Mounting structure 213 can be configured in quantities of two, three, four, five, six, seven, eight, etc., such as... Figure 9 As shown, this application uses seven mounting structures 213 as an example for illustration. Multiple mounting structures 213 are arranged sequentially at intervals along the extension direction of the side frame beam 21; in other words, multiple mounting structures 213 are arranged sequentially at intervals along the length direction of the side frame beam 21, such as... Figure 9 As shown, the extension direction of the side frame beam 21 is... Figure 9 The X direction in the equation.

[0095] like Figure 10 As shown, the frame beam body 211 has an assembly notch 2111. The assembly notch 2111 extends through the frame beam body 211 along the arrangement direction of the side frame beams 21 and the mounting cavity 27, and along the height direction of the battery device 100, the upper end of the assembly notch 2111 can extend to the upper surface of the frame beam body 211, thereby opening the upper end of the assembly notch 2111. The shape of the mounting panel 212 can be adapted to the shape of the assembly notch 2111. The mounting panel 212 is installed in the assembly notch 2111 and fixed to the frame beam body 211. The mounting panel 212 can be welded to the frame beam body 211, or the mounting panel 212 can be snapped and fixed to the frame beam body 211. The mounting panel 212 is used to install components of the battery device 100, such as electrical connectors, water inlet / outlet structures, etc.

[0096] A portion of the multiple mounting structures 213 are fixed to the frame beam body 211, and another portion of the multiple mounting structures 213 are fixed to the mounting panel 212. The mounting structure 213 disposed on the frame beam body 211 can pass through the frame beam body 211 along the height direction of the battery device 100, and the mounting structure 213 disposed on the mounting panel 212 can pass through the mounting panel 212 along the height direction of the battery device 100. For example, the lower surface of the mounting structure 213 can be flush with the lower surface of the frame beam body 211. As an example, there are seven mounting structures 213: six mounted structures 213 are fixed to the frame beam body 211, and one mounted structure 213 is fixed to the mounting panel 212. As another example, there are seven mounting structures 213: five mounted structures 213 are fixed to the frame beam body 211, and two mounted structures 213 are fixed to the mounting panel 212. This application uses the example of six mounted structures 213 fixed to the frame beam body 211 and one mounted structure 213 fixed to the mounting panel 212 for illustration. The mounted structures 213 mounted on the frame beam body 211 can be welded to the frame beam body 211, and the mounted structures 213 mounted on the mounting panel 212 can be welded to the mounting panel 212.

[0097] like Figure 3 and Figure 10 As shown, along the extension direction of the side frame beam 21, the assembly notch 2111 can be located between two adjacent mounting structures 213 on the side frame beam body 211. The assembly notch 2111 and the adjacent mounting structures 213 on the side frame beam body 211 are spaced apart along the extension direction of the side frame beam 21. The mounting panel 212 is installed in the assembly notch 2111 and can be welded to the side frame beam body 211, thereby fixing the mounting panel 212 to the side frame beam body 211.

[0098] If multiple mounting structures 213 are all set on the side beam body 211, with the length of the side beam body 211 remaining unchanged, and the vehicle space being limited and the number of mounting points increasing, the distance between two adjacent mounting structures 213 becomes too close, and the assembly gap 2111 is formed between two adjacent mounting structures 213. The distance between the assembly gap 2111 and the adjacent mounting structure 213 is too close, which is limited by the arrangement space, making it difficult to design the sealing gasket 26, affecting the assembly efficiency of the battery device 100. Furthermore, it results in the sealing gasket 26 having a narrow width at the junction of the mounting panel 212 and the side beam body 211, affecting the sealing performance between the cover 24 and the side beam 21.

[0099] In this application, by fixing a portion of the mounting structure 213 to the mounting panel 212, the mounting panel 212 occupies the assembly position of the mounting structure 213 located on the mounting panel 212. While keeping the dimensions of the mounting panel 212 and the assembly notch 2111 unchanged along the extension direction of the side frame beam 21, compared to the prior art, the distance between the assembly notch 2111 and the adjacent mounting structure 213 on the side frame beam body 211 can be increased, thereby increasing the distance between the mounting panel 212 and the adjacent mounting structure 213 on the side frame beam body 211. The increased spacing between the mounting panel 212 and the side beam body 211 facilitates the placement of the sealing gasket 26 at the junction of the mounting panel 212 and the side beam body 211, reducing the design difficulty of the sealing gasket 26 and improving the assembly efficiency of the battery device 100. Furthermore, the increased spacing between the assembly notch 2111 and the adjacent mounting structure 213 on the side beam body 211 allows for a wider sealing gasket 26 at the junction of the mounting panel 212 and the side beam body 211, thereby improving the sealing performance between the cover 24 and the side beam 21, and consequently improving the sealing performance of the battery device 100.

[0100] In the above technical solution, by fixing part of the mounting structure 213 to the mounting panel 212, it is beneficial to increase the spacing between the mounting panel 212 and the adjacent mounting structure 213 on the side beam body 211, which facilitates the arrangement of the sealing gasket 26 between the cover 24 and the side side beam 21, thereby improving the assembly efficiency of the battery device 100. Furthermore, it is beneficial to increase the width of the sealing gasket 26 at the connection between the mounting panel 212 and the side beam body 211, thereby improving the sealing performance between the cover 24 and the side side beam 21, and thus improving the sealing performance of the battery device 100.

[0101] In some examples of this application, such as Figure 9 As shown, the side frame beam body 211 is provided with multiple mounting structures 213. Along the extension direction of the side frame beam 21, an assembly notch 2111 is formed between two adjacent mounting structures 213 of the side frame beam body 211.

[0102] The side frame beam body 211 can be provided with two, three, four, five, six or other mounting structures 213. Along the extension direction of the side frame beam 21, the assembly notch 2111 is located between two adjacent mounting structures 213 provided on the side frame beam body 211.

[0103] In the above technical solution, by positioning the assembly notch 2111 between two adjacent mounting structures 213 on the side beam body 211, the assembly notch 2111 and the mounting structures 213 on the side beam body 211 can be staggered along the extension direction of the side beam 21. After the mounting panel 212 is installed on the assembly notch 2111, the risk of interference between the mounting panel 212 and the mounting structures 213 on the side beam body 211 is reduced, thereby making the setting position of the assembly notch 2111 reasonable.

[0104] In some examples of this application, such as Figure 5 As shown, along the height direction of the battery device 100, the upper surface of the mounting panel 212 and the upper surface of the frame beam body 211 are coplanar.

[0105] Among them, such as Figure 5 As shown, the height direction of the battery device 100 refers to... Figure 5 In the Z direction, along the height direction of the battery device 100, the upper surface of the mounting panel 212 and the upper surface of the frame beam body 211 can both be planes. The upper surface of the mounting panel 212 and the upper surface of the frame beam body 211 are on the same plane. In other words, along the height direction of the battery device 100, the upper surface of the mounting panel 212 is set at the same height as the upper surface of the frame beam body 211.

[0106] In the above technical solution, by making the upper surface of the mounting panel 212 and the upper surface of the side beam body 211 coplanar, the upper end of the mounting panel 212 and the upper end of the side beam body 211 adjacent to each other can be flat, reducing the difficulty of arranging the sealing gasket 26 and making it easier to set the sealing gasket 26 between the cover 24 and the side side beam 21. This is more conducive to improving the assembly efficiency of the battery device 100. In addition, it is conducive to the flat arrangement of the sealing gasket 26 at the upper end of the mounting panel 212 and the upper end of the side beam body 211 adjacent to each other, which is more conducive to improving the sealing performance between the cover 24 and the side side beam 21, and thus more conducive to improving the sealing performance of the battery device 100.

[0107] In some examples of this application, such as Figures 10-12 As shown, the mounting structure 213 and the mounting panel 212 are integrally formed.

[0108] The mounting panel 212 can be integrally die-cast with the corresponding mounting structure 213.

[0109] In the above technical solution, by integrally molding the mounting panel 212 and the corresponding mounting structure 213, the mounting panel 212 and the corresponding mounting structure 213 can be integrated. Compared with the mounting panel 212 and the corresponding mounting structure 213 being separate parts, the connection between the mounting panel 212 and the corresponding mounting structure 213 can be sealed, improving the overall structural sealing of the mounting panel 212 and the corresponding mounting structure 213, thereby improving the sealing of the side frame beam 21. This helps the side frame beam 21 meet the sealing requirements, further improving the sealing of the battery device 100. In addition, it can also improve the connection strength between the mounting panel 212 and the corresponding mounting structure 213, reducing the risk of separation between the mounting panel 212 and the corresponding mounting structure 213.

[0110] In some examples of this application, such as Figure 5 , Figure 8 and Figure 9 As shown, the side frame beam 21 also includes: a first reinforcing structure 22, which is located above the frame beam body 211 along the height direction of the battery device 100; a plurality of mounting structures 213 including a plurality of first mounting structures 214, which are disposed on the frame beam body 211; the upper part of the first mounting structure 214 forms a first protruding section 2131 extending out of the upper surface of the frame beam body 211; the first reinforcing structure 22 extends along the extension direction of the side frame beam 21 and is fixed to the frame beam body 211, and the first protruding section 2131 passes through the first reinforcing structure 22.

[0111] The side frame beam 21 may further include a first reinforcing structure 22, located above the frame beam body 211 along the height direction of the battery device 100; in other words, the frame beam body 211 is located below the first reinforcing structure 22. A first mounting structure 214 on the frame beam body 211 may be inserted through the frame beam body 211 along the height direction of the battery device 100. The upper part of the first mounting structure 214 on the frame beam body 211 forms a first protruding section 2131, which protrudes from the upper surface of the frame beam body 211 and is located above the frame beam body 211. The first reinforcing structure 22 extends along the extension direction of the side frame beam 21 and is fixed to the frame beam body 211. The first reinforcing structure 22 may be welded to the frame beam body 211 or integrally formed with the frame beam body 211. The first protruding section 2131 passes through the first reinforcing structure 22, and the upper part of the first protruding section 2131 is located above the first reinforcing structure 22. Exemplarily, the first reinforcing structure 22 may have a plurality of third through holes, which are arranged sequentially at intervals along the extension direction of the side frame beam 21. The plurality of third through holes and the plurality of first mounting structures 214 are respectively provided, and the first protruding section 2131 of the mounting structure 213 passes through the corresponding third through hole.

[0112] It should be noted that, in order to meet the mounting requirements, the first extension section 2131 is long along the height direction of the battery device 100, resulting in a long cantilever length of the first extension section 2131. The structural strength of the first extension section 2131 is insufficient. After the battery device 100 is mounted on the vehicle 200 through the first mounting structure 214, the first extension section 2131 is prone to deformation or even breakage, affecting the reliability of the first mounting structure 214 and thus affecting the assembly reliability of the battery device 100 and the vehicle 200.

[0113] In the above technical solution, by setting a first reinforcing structure 22, the first protruding section 2131 passes through the first reinforcing structure 22 along the height direction of the battery device 100. The first reinforcing structure 22 can support the first protruding section 2131 of the first mounting structure 214, which is conducive to reducing the cantilever length of the first protruding section 2131, thereby improving the structural strength of the first protruding section 2131, reducing the risk of deformation and breakage of the first protruding section 2131, thereby improving the reliability of the first mounting structure 214, and further improving the assembly reliability of the battery device 100 and the vehicle 200.

[0114] In some examples of this application, such as Figure 5 and Figure 8 As shown, the first reinforcing structure 22 includes: a first plate 221 and two second plates 222. The two second plates 222 are opposite to each other and spaced apart along a first direction. Both second plates 222 are fixed to the side frame beam body 211. The first plate 221 is connected between the two second plates 222. The first plate 221 and the side frame beam body 211 are spaced apart along the height direction of the battery device 100. The first extension section 2131 passes through the first plate 221. The first direction, the height direction of the battery device 100 and the extension direction of the side frame beam 21 are perpendicular to each other.

[0115] The first reinforcing structure 22 may include a first plate 221 and two second plates 222. Both the first plate 221 and the second plate 222 may be flat plate structures. As an example, the first plate 221 and the two second plates 222 may be integrally formed. As another example, the first plate 221 and the two second plates 222 may be welded together.

[0116] The first direction is the arrangement direction of the mounting cavity and the side frame beam 21, such as... Figure 7 As shown, the first direction is Figure 7In the Y direction, the first plate 221 and the two second plates 222 can extend along the extension direction of the side frame beam 21. The two second plates 222 are arranged opposite to each other and spaced apart along the first direction. The two second plates 222 can be parallel to each other. The two second plates 222 are fixed to the frame beam body 211. The first plate 221 is connected between the two second plates 222. Along the height direction of the battery device 100, the first plate 221 and the frame beam body 211 are opposite to each other and spaced apart. The first plate 221 has a plurality of third through holes. The plurality of first protruding sections 2131 of the plurality of first mounting structures 214 are respectively inserted through the plurality of third through holes on the first plate 221.

[0117] In the above technical solution, the first reinforcing structure 22 includes a first plate 221 and two second plates 222. The two second plates 222 are opposite to each other and spaced apart. Both second plates 222 are fixed to the frame beam body 211. The first plate 221 is connected between the two second plates 222. The first protruding section 2131 passes through the first plate 221. The two second plates 222 simultaneously support the first plate 221, so that the first plate 221 reliably supports the first protruding section 2131, thereby making the structural design of the first reinforcing structure 22 reasonable.

[0118] In some examples of this application, the first reinforcing structure 22 and the frame beam body 211 are integrally formed.

[0119] The first reinforcing structure 22 can be integrally die-cast with the frame beam body 211.

[0120] In the above technical solution, by integrally forming the first reinforcing structure 22 and the side beam body 211, the connection strength between the first reinforcing structure 22 and the side beam body 211 can be improved, the risk of separation between the first reinforcing structure 22 and the side beam body 211 can be reduced, and the side beam body 211 can reliably support the first reinforcing structure 22, improve the structural strength of the first reinforcing structure 22, and reduce the risk of deformation of the first reinforcing structure 22, thereby making the first reinforcing structure 22 more reliably support the first protruding section 2131. At the same time, it can also reduce the number of components that make up the side frame beam 21, making the production and manufacturing of the side frame beam 21 easier.

[0121] In some examples of this application, such as Figure 5 , Figure 6 and Figure 10As shown, the side frame beam 21 further includes: a second reinforcing structure 23, along the height direction of the battery device 100, at least a portion of the second reinforcing structure 23 is located above the mounting panel 212, the second reinforcing structure 23 extends along the extension direction of the side frame beam 21 and is fixed to the first reinforcing structure 22, and a plurality of mounting structures 213 include a second mounting structure 215, the second mounting structure 215 is disposed on the mounting panel 212, the upper part of the second mounting structure 215 forms a second protruding section 2132 extending out of the upper surface of the mounting panel 212, and the second protruding section 2132 passes through the second reinforcing structure 23.

[0122] The side frame beam 21 may further include a second reinforcing structure 23, which extends along the height direction of the battery device 100 and is located above the mounting panel 212. The second reinforcing structure 23 and the mounting panel 212 are spaced apart along the height direction of the battery device 100. The second reinforcing structure 23 may be a long strip structure, extending along the extension direction of the side frame beam 21, and is fixed to the first reinforcing structure 22. The second reinforcing structure 23 may be detachably installed on the first reinforcing structure 22. For example, the second reinforcing structure 23 may be fixed to the first reinforcing structure 22 by a second bolt 30, or it may be snap-fitted to the first reinforcing structure 22, or it may be welded to the first reinforcing structure 22. A second protruding section 2132 is formed on the upper part of the second mounting structure 215 on the mounting panel 212. The second protruding section 2132 extends out of the upper surface of the mounting panel 212 and is located above the mounting panel 212. The second extension section 2132 extends through the second reinforcing structure 23 along the height direction of the battery device 100, with the upper part of the second extension section 2132 located above the second reinforcing structure 23.

[0123] It should be noted that, in order to meet the mounting requirements, the second extension section 2132 is long along the height direction of the battery device 100, resulting in a long cantilever length of the second extension section 2132. The structural strength of the second extension section 2132 is insufficient. After the battery device 100 is mounted on the vehicle 200 through the second mounting structure 215, the second extension section 2132 is prone to deformation or even breakage, affecting the reliability of the second mounting structure 215 and thus affecting the assembly reliability of the battery device 100 and the vehicle 200.

[0124] In the above technical solution, by setting a second reinforcing structure 23, which is fixed to the first reinforcing structure 22, and the second protruding section 2132 passing through the second reinforcing structure 23, the second reinforcing structure 23 can support the second protruding section 2132 of the second mounting structure 215. This helps to reduce the cantilever length of the second protruding section 2132, thereby improving the structural strength of the second protruding section 2132 and reducing the risk of deformation and breakage. This, in turn, helps to improve the reliability of the second mounting structure 215 and further improves the assembly reliability of the battery device 100 and the vehicle 200. Furthermore, the second reinforcing structure 23 supporting the second protruding section 2132 of the second mounting structure 215 can improve the structural stability of the mounting panel 212, thereby strengthening the mounting capacity of the mounting panel 212 and enabling the mounting panel 212 to meet the mounting requirements.

[0125] In some examples of this application, such as Figure 4 and Figure 5 As shown, the second reinforcing structure 23 includes: a structural body 236 arranged along the extension direction of the side frame beam 21 and two mounting ears 237. The structural body 236 is connected between the two mounting ears 237. Along the height direction of the battery device 100, the structural body 236 corresponds to the mounting panel 212. The two mounting ears 237 are located above the first reinforcing structure 22 and fixed to the first reinforcing structure 22. The mounting ears 237 are provided with a first protruding section 2131 and a second protruding section 2132 passing through the structural body 236.

[0126] As an example, some of the first mounting structures 214 have their first protruding sections 2131 extending through the corresponding mounting ears 237 along the height direction of the battery device 100. As another example, the first protruding section 2131 of each first mounting structure 214 extends through the corresponding mounting ear 237 along the height direction of the battery device 100. Figure 5 As shown, this application uses the example of the first extensions 2131 of two first mounting structures 214 located on the frame beam body 211 passing through two mounting ears 237 along the height direction of the battery device 100. Exemplarily, the first extensions 2131 of the two first mounting structures 214 located on both sides of the assembly notch 2111 pass through two mounting ears 237 along the height direction of the battery device 100. The second extension 2132 of the second mounting structure 215 located on the mounting panel 212 passes through the structural body 236.

[0127] In the above technical solution, the first extension section 2131 of the first mounting structure 214 passes through the mounting ear 237 along the height direction of the battery device 100, and the second extension section 2132 passes through the main body 236. The second reinforcing structure 23 can support the first extension section 2131 of the corresponding first mounting structure 214, which is conducive to further reducing the cantilever length of the first extension section 2131, thereby further improving the structural strength of the first extension section 2131, further reducing the risk of deformation and breakage of the first extension section 2131, thereby further improving the reliability of the corresponding first mounting structure 214, and further improving the assembly reliability of the battery device 100 and the vehicle 200. Furthermore, the first protruding section 2131 can limit the second reinforcing structure 23, which helps to improve the positional stability of the second reinforcing structure 23, thereby improving the connection reliability between the second reinforcing structure 23 and the first reinforcing structure 22. This further enhances the structural strength of the second protruding section 2132, reduces the risk of deformation and breakage of the second protruding section 2132, and further improves the reliability of the second mounting structure 215 on the mounting panel 212.

[0128] In some examples of this application, such as Figure 5 , Figure 10 and Figure 14 As shown, the second reinforcing structure 23 has a first mounting hole 233, which penetrates the second reinforcing structure 23 along the height direction of the battery device 100. The second reinforcing structure 23 may have multiple first mounting holes 233, which are arranged sequentially at intervals along the extension direction of the side frame beam 21. An mounting portion 234 is fixed to the upper surface of the first plate 221 of the first reinforcing structure 22. Each mounting portion 234 has a second mounting hole 235. Multiple mounting portions 234 are provided, and each mounting portion 234 corresponds to one of the multiple first mounting holes 233, thus ensuring a one-to-one correspondence between the second mounting holes 235 and the first mounting holes 233. A second bolt 30 passes through the first mounting hole 233 and is mounted in the second mounting hole 235, thereby fixing the second reinforcing structure 23 to the first reinforcing structure 22.

[0129] In some examples of this application, such as Figure 5 , Figure 10 and Figure 14 As shown, the mounting ear 237 has a first through hole 231, and the main body 236 has a second through hole 232. Both the first through hole 231 and the second through hole 232 penetrate the second reinforcing structure 23 along the height direction of the battery device 100. The first through hole 231 is for the corresponding first protruding section 2131 to pass through, and the second through hole 232 is for the corresponding second protruding section 2132 to pass through.

[0130] Each first through hole 231 is provided with a first extension section 2131 of a first mounting structure 214, and each second through hole 232 is provided with a second extension section 2132 of a second mounting structure 215. There can be multiple first through holes 231, and the multiple first through holes 231 are arranged sequentially at intervals along the extension direction of the side frame beam 21. The multiple first through holes 231 and the multiple first extension sections 2131 correspond one-to-one, and the second through holes 232 and the second extension sections 2132 are also provided one-to-one.

[0131] In the above technical solution, the mounting ear 237 and the main body 236 respectively form a first through hole 231 and a second through hole 232. The first protruding section 2131 passes through the first through hole 231, and the second protruding section 2132 passes through the second through hole 232. This achieves the effect that the first protruding section 2131 of the corresponding first mounting structure 214 on the frame beam body 211 passes through the second reinforcing structure 23, and also achieves the effect that the second protruding section 2132 of the second mounting structure 215 on the mounting panel 212 passes through the second reinforcing structure 23, which facilitates the assembly of the second reinforcing structure 23 and the corresponding mounting structure 213.

[0132] In some examples of this application, such as Figure 5 , Figure 8 and Figure 10 As shown, the first reinforcing structure 22 has a clearance opening 223, which extends through the first reinforcing structure 22 along the height direction of the battery device 100, and the clearance opening 223 and the assembly notch 2111 are opposite each other along the height direction of the battery device 100. At least a portion of the second reinforcing structure 23 is installed in the clearance opening 223.

[0133] The first reinforcing structure 22 has a clearance opening 223 that penetrates the first reinforcing structure 22 along the height direction of the battery device 100 and also penetrates the first reinforcing structure 22 along a first direction, thereby dividing the first reinforcing structure 22 into two sections. Along the height direction of the battery device 100, the clearance opening 223 and the assembly notch 2111 are opposite to and connected. The width of the clearance opening 223 along the extension direction of the side frame beam 21 is greater than the width of the assembly notch 2111 along the extension direction of the side frame beam 21. Along the extension direction of the side frame beam 21, both ends of the clearance opening 223 extend beyond the sides of the assembly notch 2111. At least a portion of the second reinforcing structure 23 is installed within the clearance opening 223. This application uses the example of a portion of the second reinforcing structure 23 being installed within the clearance opening 223 for illustration.

[0134] In the above technical solution, by setting the clearance opening 223 and the assembly notch 2111 to be opposite each other along the height direction of the battery device 100, the clearance opening 223 and the assembly notch 2111 can be connected. During the process of assembling the mounting panel 212 into the assembly notch 2111, the second mounting structure 215 on the mounting panel 212 can be assembled into the clearance opening 223, so that the second mounting structure 215 on the mounting panel 212 passes through the clearance opening 223 along the height direction of the battery device 100. The first reinforcing structure 22 can avoid the second mounting structure 215 on the mounting panel 212, reducing the risk of interference between the first reinforcing structure 22 and the second mounting structure 215 on the mounting panel 212, thereby facilitating the assembly of the mounting panel 212 into the assembly notch 2111, which in turn helps to improve the assembly efficiency of the side frame beam 21. Furthermore, by installing at least part of the second reinforcing structure 23 into the clearance opening 223, it is beneficial to further improve the structural compactness of the side frame beam 21.

[0135] In some examples of this application, such as Figures 8-12 As shown, the mounting panel 212 includes a connected panel end wall 2121 and an annular wall 2122. The panel end wall 2121 is used to mount components. A mounting cavity 27 for mounting battery cells 10 is formed inside the housing 20. The mounting cavity 27 is adjacent to the side frame beam 21. The annular wall 2122 is disposed around the panel end wall 2121 along the circumferential edge of the panel end wall 2121 and extends toward the mounting cavity 27. From the side frame beam 21 to the mounting cavity 27, the frame beam body 211 has an inner surface 2113 close to the mounting cavity 27. The annular wall 2122 is located on the side of the inner surface 2113 facing away from the mounting cavity 27. The annular wall 2122 and the frame beam body 211 are sealed together.

[0136] The mounting panel 212 may include a connected panel end wall 2121 and an annular wall 2122, which may be integrally formed. Along a first direction, the annular wall 2122 is located on the side of the panel end wall 2121 closest to the mounting cavity 27. The annular wall 2122 is disposed around the panel end wall 2121 along its circumferential edge, thereby allowing the panel end wall 2121 and the annular wall 2122 to jointly define a receiving groove 2128. The receiving groove 2128 is open towards the end of the mounting cavity 27 and is used to receive structural components. Exemplarily, the receiving groove 2128 is used to receive a portion of the structure of the second mounting structure 215 on the mounting panel 212, which may pass through the receiving groove 2128.

[0137] like Figure 8 and Figure 12As shown, the annular wall 2122 may include: a panel bottom wall 2123 and two panel side walls 2124. The two panel side walls 2124 are arranged opposite to each other and spaced apart along the extension direction of the side frame beam 21. Both panel side walls 2124 can be plate-shaped structures and can be arranged in parallel. The panel bottom wall 2123 is connected between the two panel side walls 2124. Along the extension direction of the side frame beam 21, both ends of the panel bottom wall 2123 are respectively connected to the two panel side walls 2124. Along the first direction, the edge of the panel bottom wall 2123 away from the panel end wall 2121 is sealed to the corresponding part of the inner wall of the assembly notch 2111. For example, a sealing structure is provided between the edge of the panel bottom wall 2123 away from the panel end wall 2121 and the inner wall of the assembly notch 2111, so that the edge of the panel bottom wall 2123 away from the panel end wall 2121 is sealed to the corresponding part of the inner wall of the assembly notch 2111. Along the first direction, the edge of the panel sidewall 2124 away from the panel end wall 2121 is sealed to the corresponding part of the inner wall of the assembly notch 2111. For example, a sealing structure is provided between the edge of the panel sidewall 2124 away from the panel end wall 2121 and the inner wall of the assembly notch 2111, so that the edge of the panel sidewall 2124 away from the panel end wall 2121 is sealed to the corresponding part of the inner wall of the assembly notch 2111.

[0138] In the above technical solution, the annular wall 2122 and the frame beam body 211 are sealed together, thereby sealing the adjacent part of the mounting panel 212 and the frame beam body 211, improving the sealing performance of the connection between the mounting panel 212 and the frame beam body 211, and further improving the sealing performance of the side frame beam 21. This makes it more conducive to the side frame beam 21 meeting the sealing requirements, thereby further improving the sealing performance of the battery device 100 and reducing the external environmental risks of the side frame beam 21 connecting the mounting cavity 27 and the battery device 100.

[0139] In some examples of this application, the annular wall 2122 and the frame beam body 211 are welded together.

[0140] The bottom wall 2123 of the panel is welded to the inner bottom wall of the assembly notch 2111 at the edge away from the end wall 2121 of the panel, and the side wall 2124 of the panel is welded to the inner side wall of the assembly notch 2111 at the edge away from the end wall 2121 of the panel.

[0141] In the above technical solution, by welding the annular wall 2122 and the frame beam body 211 together, a sealed connection effect between the annular wall 2122 and the frame beam body 211 can be achieved. This also allows the mounting panel 212 to be securely installed on the frame beam body 211, reducing the risk of separation between the mounting panel 212 and the frame beam body 211, and enhancing the mounting panel 212's ability to bear load strength.

[0142] In some examples of this application, such as Figures 8-10 As shown, the frame beam body 211 forms a weight reduction space 2112 that communicates with the atmospheric environment. Along the extension direction of the side frame beam 21, at least one side of the assembly notch 2111 forms a weight reduction space 2112. The weight reduction space 2112 extends to the inner wall of the assembly notch 2111 facing the end of the assembly notch 2111. Along the first direction, the annular wall 2122 is located inside the panel end wall 2121, and the panel side wall 2124 covers the weight reduction space 2112 on the corresponding side.

[0143] The frame beam body 211 has a weight reduction space 2112. The weight reduction space 2112 is connected to the atmospheric environment outside the battery device 100. By setting the weight reduction space 2112, compared with the frame beam body 211 being a solid structure, the weight of the frame beam body 211 can be reduced, which is conducive to the lightweight design of the box 20, and thus conducive to the lightweight design of the battery device 100.

[0144] like Figure 9 As shown, a weight-reduction space 2112 is formed on at least one side of the assembly notch 2111 along the extension direction of the side frame beam 21. As an example, a weight-reduction space 2112 is formed on one side of the assembly notch 2111 along the extension direction of the side frame beam 21. As another example, weight-reduction spaces 2112 are formed on both sides of the assembly notch 2111 along the extension direction of the side frame beam 21. This application describes the assembly notch 2111 as having multiple weight-reduction spaces 2112 on both sides. Exemplarily, the multiple weight-reduction spaces 2112 on each side of the assembly notch 2111 are arranged sequentially along the height direction of the battery device 100. This arrangement can further reduce the weight of the frame beam body 211, thereby making the battery device 100 more lightweight.

[0145] like Figure 9 As shown, the weight reduction space 2112 can be extended along the extension direction of the side frame beam 21. The end of the weight reduction space 2112 near the assembly notch 2111 extends to the inner wall of the assembly notch 2111, and the end of the weight reduction space 2112 away from the assembly notch 2111 extends to the corresponding side end face of the frame beam body 211. This arrangement allows the weight reduction space 2112 to be machined on the frame beam body 211, which facilitates the production and manufacturing of the frame beam body 211 and helps to reduce the manufacturing difficulty of the frame beam body 211.

[0146] Along the first direction, the annular wall 2122 is located inside the panel end wall 2121. It can also be understood that the annular wall 2122 is located on the side of the panel end wall 2121 near the mounting cavity 27. The two panel side walls 2124 are respectively arranged opposite to the open ends of the corresponding side weight reduction spaces 2112. The two panel side walls 2124 respectively cover the open ends of the corresponding side weight reduction spaces 2112. On the basis of meeting the lightweight requirements of the side frame beam 21, it can effectively reduce the risk of communication between the weight reduction space 2112 and the mounting cavity, thereby further improving the sealing performance of the side frame beam 21. This is more conducive to making the side frame beam 21 meet the sealing requirements, thereby further improving the sealing performance of the battery device 100 and further reducing the external environmental risks of the side frame beam 21 communicating with the mounting cavity 27 and the battery device 100.

[0147] In the above technical solution, the weight reduction space 2112 is formed in the frame beam body 211, which can reduce the weight of the frame beam body 211, thereby facilitating the lightweight design of the battery device 100. Furthermore, the weight reduction space 2112 extends to the inner sidewall of the assembly notch 2111 at the end facing the assembly notch 2111, and the panel sidewall 2124 covers the open end of the weight reduction space 2112 on the corresponding side. While satisfying the lightweight design of the side frame beam 21, it can effectively reduce the risk of communication between the weight reduction space 2112 and the mounting cavity 27, thereby further improving the sealing performance of the side frame beam 21. This is more conducive to the side frame beam 21 meeting the sealing requirements, further improving the sealing performance of the battery device 100, and further reducing the external environmental risks of the side frame beam 21 communicating with the mounting cavity 27 and the battery device 100.

[0148] In some examples of this application, such as Figure 11 and Figure 12 As shown, the annular wall 2122 also includes: a panel bottom wall 2123 and a panel top wall 2125. The panel bottom wall 2123 and the panel top wall 2125 are opposite to each other and spaced apart along the height direction of the battery device 100. The multiple mounting structures 213 include a second mounting structure 215. The second mounting structure 215 is disposed on the mounting panel 212 and passes through the panel bottom wall 2123 and the panel top wall 2125.

[0149] The annular wall 2122 may further include a panel bottom wall 2123 and a panel top wall 2125. The panel top wall 2125 is a plate-like structure. The upper surface of the panel top wall 2125 may be coplanar with the upper surface of the frame beam body 211. The panel bottom wall 2123 and the panel top wall 2125 are arranged opposite to each other and spaced apart along the height direction of the battery device 100. The second mounting structure 215 provided on the mounting panel 212 passes through the panel bottom wall 2123 and the panel top wall 2125 along the height direction of the battery device 100. The second mounting structure 215 can pass through the receiving groove 2128 in the above embodiment. The second mounting structure 215 provided on the mounting panel 212 may be integrally formed with the panel bottom wall 2123 and the panel top wall 2125.

[0150] In the above technical solution, by having the second mounting structure 215 pass through the bottom wall 2123 and the top wall 2125 of the panel, part of the structure of the second mounting structure 215 can be set inside the mounting panel 212. Compared with the second mounting structure 215 being located outside the mounting panel 212, this can improve the overall structural compactness of the mounting panel 212 and the second mounting structure 215. Furthermore, the bottom wall 2123 and the top wall 2125 of the panel can simultaneously support the second mounting structure 215, which can enhance the ability of the second mounting structure 215 located on the mounting panel 212 to bear the load strength.

[0151] In some examples of this application, such as Figure 11 and Figure 12 As shown, the mounting panel 212 further includes a mounting portion 2126, which is located on the side of the panel end wall 2121 near the mounting cavity 27 and integrally formed with the panel end wall 2121 along the arrangement direction of the mounting cavity 27 and the side frame beam 21. The mounting panel 212 has a mounting groove 2127 extending along the arrangement direction of the mounting cavity 27 and the side frame beam 21. The mounting groove 2127 extends from the panel end wall 2121 to the corresponding mounting portion 2126. The mounting groove 2127 is used to install fasteners for fixing components.

[0152] The mounting panel 212 may further include a mounting portion 2126. Along the first direction, the mounting portion 2126 is located on the side of the panel end wall 2121 near the mounting cavity 27 and is located in the receiving groove 2128. The mounting portion 2126 is integrally formed with the panel end wall 2121. The mounting panel 212 is formed with a mounting groove 2127 extending along the first direction. The mounting groove 2127 extends from the surface of the panel end wall 2121 away from the mounting cavity 27 to the corresponding mounting portion 2126. For example, there are multiple mounting portions 2126 and multiple mounting grooves 2127 formed in the mounting panel 212. The multiple mounting portions 2126 and multiple mounting grooves 2127 are arranged in a one-to-one correspondence. The mounting groove 2127 can have a threaded structure on its sidewall. The mounting groove 2127 is used to install fasteners, which can be third bolts. When the components of the battery device 100 are installed on the panel end wall 2121, the third bolt passes through the components and is installed in the mounting groove 2127, thereby fixing the components of the battery device 100 to the mounting panel 212.

[0153] In the above technical solution, the mounting part 2126 is integrally formed with the panel end wall 2121, and the mounting groove 2127 extends from the panel end wall 2121 to the corresponding mounting part 2126, so that the mounting groove 2127 is not connected to the mounting cavity 27. After the components of the battery device 100 are installed on the mounting panel 212 by fasteners, the fasteners do not need to be sealed, thereby reducing the assembly difficulty of the components of the battery device 100.

[0154] In some examples of this application, a sealing structure is provided at the connection between the first mounting structure 214 and the side beam body 211, thereby sealing the gap between the first mounting structure 214 and the side beam body 211, so that the side beam 21 meets the sealing requirements.

[0155] The electrical device according to the embodiments of this application includes the battery device 100 of the above embodiments.

[0156] By fixing part of the mounting structure 213 to the mounting panel 212, it is beneficial to increase the spacing between the mounting panel 212 and the adjacent mounting structure 213 on the side beam body 211, which facilitates the arrangement of the sealing gasket 26 between the cover 24 and the side frame beam 21, thereby improving the assembly efficiency of the battery device 100. Furthermore, it is beneficial to increase the width of the sealing gasket 26 at the connection between the mounting panel 212 and the side frame beam body 211, thereby improving the sealing performance between the cover 24 and the side frame beam 21, which in turn improves the sealing performance of the battery device 100 and enhances the operational reliability of the electrical device.

[0157] According to some embodiments of this application, see Figures 3-11As shown, this application provides a battery device 100, including: a plurality of battery cells 10; a housing 20, in which the plurality of battery cells 10 are disposed; the housing 20 includes a side frame beam 21, the side frame beam 21 including: a frame beam body 211, a mounting panel 212 and a plurality of mounting structures 213, the mounting structures 213 extending along the height direction of the battery device 100, the plurality of mounting structures 213 being arranged sequentially at intervals along the extension direction of the side frame beam 21, the frame beam body 211 having an assembly notch 2111, the upper end of the assembly notch 2111 extending to the upper surface of the frame beam body 211 along the height direction of the battery device 100, the mounting panel 212 being mounted on the assembly notch 2111 and fixed to the frame beam body 211, the mounting panel 212 being used to mount components of the battery device 100, a portion of the plurality of mounting structures 213 being fixed to the frame beam body 211, and one of the plurality of mounting structures 213 being fixed to the mounting panel 212. An assembly notch 2111 is formed between two adjacent mounting structures 213 on the frame beam body 211. Along the height direction of the battery device 100, the upper surface of the mounting panel 212 is coplanar with the upper surface of the frame beam body 211. The mounting structure 213 on the mounting panel 212 and the mounting panel 212 are integrally formed.

[0158] The side frame beam 21 further includes: a first reinforcing structure 22, located above the frame beam body 211 along the height direction of the battery device 100; a first extension section 2131 extending beyond the upper surface of the frame beam body 211 is formed on the upper part of the first mounting structure 214; the first reinforcing structure 22 extends along the extension direction of the side frame beam 21 and is fixed to the frame beam body 211, and the first extension section 2131 passes through the first reinforcing structure 22. The side frame beam 21 also includes: a second reinforcing structure 23, located above the mounting panel 212 along the height direction of the battery device 100; a portion of the second reinforcing structure 23 is located above the mounting panel 212, and another portion of the second reinforcing structure 23 is located above the first reinforcing structure 22; the second reinforcing structure 23 extends along the extension direction of the side frame beam 21 and is fixed to the first reinforcing structure 22; a second extension section 2132 extending beyond the upper surface of the mounting panel 212 is formed on the upper part of the second mounting structure 215, and the second extension section 2132 passes through the second reinforcing structure 23. The first extensions 2131 of the two first mounting structures 214 are respectively inserted into the two mounting ears 237 of the second reinforcing structure 23. The first reinforcing structure 22 has a clearance opening 223, and the clearance opening 223 and the assembly notch 2111 are opposite to and connected along the height direction of the battery device 100.

[0159] The mounting panel 212 includes a panel end wall 2121 and an annular wall 2122, which are arranged along a first direction. The annular wall 2122 surrounds the panel end wall 2121 along its circumferential edge. The annular wall 2122 includes a panel bottom wall 2123 and two panel side walls 2124, which are opposite to and spaced apart along the extension direction of the side frame beam 21. The panel bottom wall 2123 is connected between the two panel side walls 2124. The edges of the panel bottom wall 2123 and the panel side walls 2124 facing away from the panel end wall 2121 are sealed to the inner wall of the mounting notch 2111. The edges of the panel bottom wall 2123 and the panel side walls 2124 facing away from the panel end wall 2121 are welded to the inner wall of the mounting notch 2111. The frame beam body 211 forms a weight-reducing space 2112 that communicates with the atmospheric environment. Along the extension direction of the side frame beam 21, weight-reducing spaces 2112 are formed on both sides of the assembly notch 2111. The weight-reducing spaces 2112 extend from the end facing the assembly notch 2111 to the inner wall of the assembly notch 2111. Along the first direction, an annular wall 2122 is located inside the panel end wall 2121, and the panel side wall 2124 covers the open end of the corresponding weight-reducing space 2112. The annular wall 2122 also includes a panel top wall 2125, and a second mounting structure 215 passes through the panel bottom wall 2123 and the panel top wall 2125.

[0160] The mounting panel 212 also includes a mounting portion 2126. Along the first direction, the mounting portion 2126 is located inside the panel end wall 2121 and is integrally formed with the panel end wall 2121. The mounting panel 212 has a mounting groove 2127 extending along the first direction. The mounting groove 2127 extends from the panel end wall 2121 to the corresponding mounting portion 2126. The mounting groove 2127 is used to install fasteners for components.

[0161] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0162] Other configurations and operations of the battery device 100 according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0163] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0164] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: Multiple battery cells; A housing containing multiple battery cells is provided. The housing includes a side frame beam, which comprises a frame beam body, a mounting panel, and multiple mounting structures. The mounting structures extend along the height direction of the battery device, and the multiple mounting structures are arranged sequentially at intervals along the extension direction of the side frame beam. The frame beam body has an assembly notch, and the mounting panel is installed in the assembly notch and fixed to the frame beam body. The mounting panel is used to install components of the battery device. Parts of the multiple mounting structures are fixed to the frame beam body, and another part of the multiple mounting structures is fixed to the mounting panel. The side frame beam further includes: a first reinforcing structure and a second reinforcing structure. The first reinforcing structure is located above the frame beam body and fixed to the frame beam body. The plurality of mounting structures include the first mounting structure and the second mounting structure. The first mounting structure is disposed on the frame beam body. The upper part of the first mounting structure forms a first protruding section extending out of the upper surface of the frame beam body. The first protruding section passes through the first reinforcing structure. The second reinforcing structure is fixed to the first reinforcing structure. The second mounting structure is disposed on the mounting panel. The upper part of the second mounting structure forms a second protruding section extending out of the upper surface of the mounting panel. The second protruding section passes through the second reinforcing structure. The second reinforcing structure includes a structural body arranged along the extension direction of the side frame beam and two mounting ears. The structural body is connected between the two mounting ears. The two mounting ears are located above the first reinforcing structure and fixed to the first reinforcing structure.

2. The battery device according to claim 1, characterized in that, The side frame beam body is provided with a plurality of mounting structures, and an assembly notch is formed between two adjacent mounting structures of the side frame beam body along the extension direction of the side frame beam.

3. The battery device according to claim 1, characterized in that, Along the height direction of the battery device, the upper surface of the mounting panel and the upper surface of the frame beam body are coplanar.

4. The battery device according to claim 1, characterized in that, The mounting structure and the mounting panel are integrally formed.

5. The battery device according to any one of claims 1-4, characterized in that, The plurality of mounting structures include a plurality of the first mounting structures, wherein the first reinforcing structure extends along the extension direction of the side frame beam.

6. The battery device according to claim 5, characterized in that, The first reinforcing structure includes: a first plate and two second plates, the two second plates being opposite to each other and spaced apart along a first direction, both second plates being fixed to the side frame beam body, the first plate being connected between the two second plates, the first plate and the side frame beam body being spaced apart along the height direction of the battery device, the first protruding section passing through the first plate, and the first direction, the height direction of the battery device and the extension direction of the side frame beam being perpendicular to each other.

7. The battery device according to claim 5, characterized in that, The first reinforcing structure and the frame beam body are integrally formed.

8. The battery device according to claim 5, characterized in that, At least a portion of the second reinforcing structure is located above the mounting panel, and the second reinforcing structure extends along the extension direction of the side frame beam.

9. The battery device according to claim 8, characterized in that, Along the height direction of the battery device, the main body of the structure and the mounting panel correspond to each other, the mounting ear is provided with the first protruding section, and the second protruding section is provided through the main body of the structure.

10. The battery device according to claim 9, characterized in that, The mounting ear has a first through hole, and the main body of the structure has a second through hole. Both the first through hole and the second through hole penetrate the second reinforcing structure along the height direction of the battery device. The first through hole is for the corresponding first protruding section to pass through, and the second through hole is for the corresponding second protruding section to pass through.

11. The battery device according to claim 8, characterized in that, The first reinforcing structure has a clearance opening that extends through the first reinforcing structure along the height direction of the battery device, and the clearance opening and the mounting notch are opposite each other along the height direction of the battery device. At least a portion of the second reinforcing structure is mounted on the clearance opening.

12. The battery device according to any one of claims 1-4, characterized in that, The mounting panel includes a connected panel end wall and an annular wall. The panel end wall is used to mount the component. A mounting cavity for mounting the battery cell is formed inside the housing. The mounting cavity is adjacent to the side frame beam. The annular wall is disposed around the panel end wall along the circumferential edge of the panel end wall and extends toward the mounting cavity. From the side frame beam to the mounting cavity, the frame beam body has an inner surface close to the mounting cavity. The annular wall is located on the side of the inner surface opposite to the mounting cavity. The annular wall and the frame beam body are sealed together.

13. The battery device according to claim 12, characterized in that, The annular wall further includes a panel bottom wall and a panel top wall, the panel bottom wall and the panel top wall being opposite to and spaced apart along the height direction of the battery device, and the plurality of mounting structures including a second mounting structure, the second mounting structure being disposed on the mounting panel, and the second mounting structure passing through the panel bottom wall and the panel top wall.

14. The battery device according to claim 12, characterized in that, The mounting panel further includes a mounting portion along the arrangement direction of the mounting cavity and the side frame beams. The mounting portion is located on the side of the panel end wall near the mounting cavity and is integrally formed with the panel end wall. The mounting panel has a mounting groove extending along the arrangement direction of the mounting cavity and the side frame beams. The mounting groove extends from the panel end wall to the corresponding mounting portion. The mounting groove is used to install fasteners for fixing components.

15. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-14.

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