Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment, and the battery device comprises a box body which is provided with a containing cavity; the battery monomer is arranged in the accommodating cavity; the expansion beam is arranged in the accommodating cavity, is in abutting fit with the battery monomers in the accommodating cavity, and is used for resisting the expansion force of the battery monomers; and the mounting piece is arranged on the expansion beam and is used for mounting an external structure. According to the battery device, the mounting part is integrated on the expansion beam, connection and mounting of external structures such as the output pole can be realized through the mounting part, a connection interface is reduced, the overall assembly structure is simpler, and connection between the expansion beam and the external structures such as the output pole is more stable, so that the overall stability of the battery device can be effectively improved.

Description

Technical Field

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

[0002] The battery cells are housed within the casing to form a battery assembly. During cyclic use, the battery cells undergo expansion and deformation. Therefore, an expansion beam structure is required inside the casing to limit and support the battery cells, resisting the expansion forces on the battery cells.

[0003] For the current expansion beam structure, it is also necessary to take into account the connection with other structures. For example, the expansion beam is needed to install the output pole base so as to facilitate the connection and installation of the output pole.

[0004] As a result, the current expansion beam has a relatively complex overall structure and poor connection stability, which is not conducive to improving the overall stability of the battery device. Utility Model Content

[0005] Therefore, it is necessary to provide a battery device and electrical equipment to address the problems of the current expansion beam's complex overall structure and poor connection stability.

[0006] In a first aspect, this application provides a battery device, including a housing, a battery cell, an expansion beam, and a mounting component; the housing has a receiving cavity; the battery cell is disposed within the receiving cavity; the expansion beam is disposed within the receiving cavity and abuts against the battery cell within the receiving cavity to resist the expansion force of the battery cell; the mounting component is disposed on the expansion beam and is used to mount an external structure.

[0007] With the above structure, the mounting components are integrated onto the expansion beam. The mounting components enable the connection and installation of external structures such as the output poles, reducing the number of connection interfaces, simplifying the overall assembly structure, and making the connection between the expansion beam and external structures such as the output poles more stable, thereby effectively improving the overall stability of the battery device.

[0008] In some embodiments, the expansion beam includes interconnected metal and non-metal components, with the metal components fixedly connected to the housing and the mounting components disposed on the non-metal components.

[0009] The above structure not only ensures the support and limiting strength of the expansion beam, but also enables the lightweighting of the expansion beam. In addition, it also allows for the installation and connection of external structures such as the output pole.

[0010] In some embodiments, the mounting component is integrally formed with the non-metallic component. This effectively reduces the number of connection interfaces, simplifies the assembly structure, and improves connection stability.

[0011] In some embodiments, the non-metallic component includes a first insulating component and a second insulating component, and the metallic component includes a first sheet metal component fixedly connected to the housing. The first insulating component and the second insulating component are respectively connected to opposite side surfaces of the first sheet metal component along a first direction, and the mounting component is integrated on at least one of the first insulating component and the second insulating component; wherein, the battery cell abuts against the first insulating component along the first direction.

[0012] The structure, which consists of a first insulating component, a first sheet metal component, and a second insulating component stacked on top of each other, can buffer the expansion force and simplify the overall connection structure. Furthermore, the first insulating component also serves as insulation between the battery cell and the first sheet metal component, further simplifying the structure.

[0013] In some embodiments, the metal component further includes a second sheet metal component fixedly connected to the housing, the second sheet metal component abutting against the side surface of the second insulating component opposite to the first sheet metal component along a first direction. Thus, the second sheet metal component can further provide support and a limiting base, improving the overall structural strength of the expansion beam.

[0014] In some embodiments, the first insulating element, the first sheet metal element, the second insulating element, and the second sheet metal element are detachably connected.

[0015] The above structure allows for the selection of various combinations of the first insulating component, the first sheet metal component, the second insulating component, and the second sheet metal component, thereby more accurately adapting to battery devices with different structures.

[0016] In some embodiments, the second sheet metal part includes a support portion and a first connecting portion and a second connecting portion respectively connected to opposite ends of the support portion along a second direction. Both the first connecting portion and the second connecting portion extend along a first direction. The first connecting portion and the support portion are detachably connected to the first sheet metal part, the second connecting portion is fixedly connected to the housing, and at least a portion of the support portion abuts against the second insulating member along the first direction. The second direction intersects with the first direction.

[0017] The above structure can further improve the overall support strength of the expansion beam and make the connection between the second sheet metal part, the first sheet metal part, the first insulating part, and the second insulating part more stable.

[0018] In some embodiments, the support portion includes a first sub-part and a second sub-part connected to each other, the first sub-part being connected to a first connecting portion and the second sub-part being connected to a second connecting portion; wherein the first sub-part abuts against the second insulating member in a first direction, and the second sub-part extends in a direction away from the second insulating member and forms a cavity with a gap between it and the second insulating member.

[0019] In this way, the support part can be detachably connected to the first insulator, the first sheet metal part, and the second insulator through the first sub-part. At the same time, the cavity between the second sub-part and the second insulator can further improve the support strength of the second sheet metal part.

[0020] In some embodiments, the surface of the second insulating member facing the cavity has protruding reinforcing ribs, the shape of which matches the shape of the cavity. By providing reinforcing ribs, the supporting strength can be further improved, and the buffering and transmission of expansion forces can be achieved.

[0021] In some embodiments, the expansion beams include at least two beams and are spaced apart in the receiving cavity along a first direction, and a plurality of battery cells are arranged between each pair of adjacent expansion beams and abut against the expansion beams on both sides along the first direction.

[0022] The above structure allows the battery cells to be more stably attached to the expansion beams on both sides, enabling the expansion beams to better provide anti-expansion force.

[0023] Secondly, this application also provides an electrical device, including the battery device described above.

[0024] The aforementioned battery device and electrical equipment integrate the mounting components onto the expansion beam. The mounting components enable the connection and installation of external structures such as the output poles, reducing the number of connection interfaces, simplifying the overall assembly structure, and making the connection between the expansion beam and external structures such as the output poles more stable, thereby effectively improving the overall stability of the battery device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a battery device according to one or more embodiments.

[0026] Figure 2 This is a schematic diagram of the structure of the expansion beam in a battery device according to one or more embodiments.

[0027] Figure 3 This is a cross-sectional view showing the location of the expansion beam in a battery device according to one or more embodiments.

[0028] Figure 4 This is a cross-sectional view of an expansion beam in a battery device according to one or more embodiments.

[0029] Figure 5 This is an exploded view of the expansion beam in a battery device according to one or more embodiments.

[0030] Figure 6 This is a cross-sectional view of an expansion beam in a battery device according to one or more embodiments.

[0031] Figure 7This is a cross-sectional view of a second sheet metal part in a battery device according to one or more embodiments.

[0032] Explanation of reference numerals in the attached drawings: 100, battery assembly; 10, housing; 20, battery cell; 30, expansion beam; 40, mounting component; 11, receiving cavity; 31, metal component; 32, non-metallic component; 311, first sheet metal component; 312, second sheet metal component; 313, support part; 314, first connecting part; 315, second connecting part; 316, first sub-part; 317, second sub-part; 318, cavity; 319, first snap-fit ​​hole; 321, first insulating component; 322, second insulating component; 323, reinforcing rib; 324, second snap-fit ​​hole; a, first direction; b, second direction. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0040] The structure of a battery device typically includes a housing and individual battery cells. The individual battery cells are placed inside the housing, which provides space for them and protects them effectively.

[0041] During the cycle of use, battery cells undergo expansion and deformation. To make the structure of the battery cells more stable, an expansion beam structure is usually installed inside the casing. The expansion beam can limit and support the battery cells to resist the expansion force on the battery cells, making the structure of the battery cells more stable.

[0042] However, with the development of battery device structures, the requirements for expansion beams are no longer limited to support and positioning. Battery devices also include many other functional components, such as output terminals and battery management systems (BMS). These functional components need to be installed inside the enclosure. To save space, some functional components are usually connected to the expansion beam.

[0043] Therefore, traditional expansion beam structures cannot meet the above installation and connection requirements, and different connection structures also have different requirements for the structure of expansion beams. As a result, expansion beams are usually unable to adapt to connections under different conditions, which leads to a more complex overall structure of expansion beams and poor connection stability, which is not conducive to improving the overall stability of battery devices.

[0044] Based on the above considerations, in order to solve the problems of the complex overall structure and poor connection stability of the current expansion beam, one or more embodiments of this application provide a battery device that integrates the mounting component on the expansion beam. The mounting component enables the connection and installation of external structures such as the output pole, reduces the number of connection interfaces, simplifies the overall assembly structure, and makes the connection between the expansion beam and external structures such as the output pole more stable, thereby effectively improving the overall stability of the battery device.

[0045] It should be noted that the battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0046] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0047] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0048] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0049] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0050] Please refer to the following: Figure 1 , Figure 2 as well as Figure 3 One embodiment of this application provides a battery device 100, including a housing 10, a battery cell 20, an expansion beam 30, and a mounting member 40. The housing 10 has a receiving cavity 11, in which the battery cell 20 is disposed. The expansion beam 30 is disposed within the receiving cavity 11 and abuts against the battery cell 20 within the receiving cavity 11 to resist the expansion force of the battery cell 20. The mounting member 40 is disposed on the expansion beam 30 and is used to mount external structures.

[0051] It should be noted that the housing 10 refers to the structure in the battery device 100 used to house the battery cell 20 and other functional components. The housing 10 has a receiving cavity 11 inside, in which the battery cell 20 is placed. The housing 10 can protect the battery cell 20, enabling the battery cell 20 to be used more stably in cycles.

[0052] Battery cell 20 refers to the component in battery device 100 that actually undergoes a reaction, and is also the smallest unit that makes up battery device 100. There can be multiple battery cells 20, and the number of battery cells 20 can be adjusted according to the actual needs of battery device 100. All battery cells 20 can be arranged in a matrix in the receiving cavity 11.

[0053] The battery cells 20 are typically divided into multiple rows, with each row containing multiple battery cells 20. The battery cells 20 in each row are arranged sequentially along their thickness direction, meaning that the large surfaces of two adjacent battery cells 20 are in contact with each other. Furthermore, the battery cells 20 in each row are arranged sequentially along their width direction within the receiving cavity 11.

[0054] The expansion beam 30 refers to a structure that can limit the position of the battery cell 20 within the receiving cavity 11 to resist the expansion force of the battery cell 20. The expansion beam 30 can be disposed on at least one side of the battery cell 20, so that the large surface of an adjacent battery cell 20 can abut against the expansion beam 30, thereby limiting the position of the battery cell 20.

[0055] Mounting component 40 refers to a component that can be used to mount functional parts or other external structures in battery device 100. Mounting component 40 may be, but is not limited to, an output terminal base for mounting output terminals or a mounting bracket for mounting BMS.

[0056] Specifically, the mounting component 40 can be installed on the expansion beam 30 by means of adhesive bonding, welding, detachable connection, integral molding, etc. In this way, the mounting component 40 and the expansion beam 30 form an integral structure, fixing the expansion beam 30 into the receiving cavity 11. While resisting the expansion force of the battery cell 20, the expansion beam 30 can also realize the installation and connection of the output pole or BMS and other structures through the mounting component 40.

[0057] With the above structure, the mounting component 40 is integrated on the expansion beam 30. The mounting component 40 enables the connection and installation of external structures such as the output pole, reduces the number of connection interfaces, simplifies the overall assembly structure, and makes the connection between the expansion beam 30 and external structures such as the output pole more stable, thereby effectively improving the overall stability of the battery device 100.

[0058] In some embodiments, the expansion beam 30 includes a metal part 31 and a non-metal part 32 that are connected to each other. The metal part 31 is fixedly connected to the housing 10, and the mounting part 40 is disposed on the non-metal part 32.

[0059] Specifically, the metal part 31 can be fixedly connected to the housing 10 by welding, screwing, or other connection methods, but not limited to these methods. The metal part 31 and the non-metal part 32 can cooperate with each other to achieve the lightweighting of the expansion beam 30 while ensuring its supporting and limiting strength.

[0060] Furthermore, the mounting component 40 is integrated onto the non-metallic component 32, thus enabling the installation and connection of the external structure through the mounting component 40.

[0061] The above structure not only ensures the support and limiting strength of the expansion beam 30, but also enables the expansion beam 30 to be lightweight. In addition, it also enables the installation and connection of external structures such as the output pole.

[0062] In some embodiments, the mounting part 40 is integrally formed with the non-metallic part 32.

[0063] Specifically, the mounting component 40 is integrally formed with the non-metallic component 32. For example, when the mounting component 40 is set as an output electrode base, the output electrode base is directly integrally formed and integrated onto the non-metallic component 32.

[0064] This effectively reduces the number of connection interfaces, simplifies the assembly structure, and improves connection stability.

[0065] In some embodiments, the non-metallic component 32 includes a first insulating component 321 and a second insulating component 322, and the metallic component 31 includes a first sheet metal component 311 fixedly connected to the housing 10. The first insulating component 321 and the second insulating component 322 are respectively connected to opposite side surfaces of the first sheet metal component 311 along a first direction a. The mounting component 40 is integrated onto at least one of the first insulating component 321 and the second insulating component 322. The battery cell 20 abuts against the first insulating component 321 along the first direction a.

[0066] Specifically, when the individual battery cells 20 are arranged within the receiving cavity 11, the first direction a can be set to be perpendicular to the large surface of the battery cell 20. That is, the large surface of the battery cell 20 abuts against the expansion beam 30 along the first direction a.

[0067] Furthermore, the first insulating member 321 and the second insulating member 322 are respectively connected to the opposite two sides of the first sheet metal member 311 along the first direction a. That is, the first insulating member 321, the first sheet metal member 311 and the second insulating member 322 are stacked sequentially along the first direction a, and the first insulating member 321 and the second insulating member 322 sandwich the first sheet metal member 311 therein to form a sandwich structure.

[0068] The mounting component 40 can be integrally formed on the first insulating component 321, or integrally formed on the second insulating component 322, or integrally formed on both the first insulating component 321 and the second insulating component 322. The specific details can be adjusted according to the actual situation, which will not be elaborated here.

[0069] Furthermore, the first insulating member 321 is located on the side close to the battery cell 20, so that the battery cell 20 can abut against the first insulating member 321 along the first direction a. In this way, the first insulating member 321 can also play a role in insulation and heat preservation between the battery cell 20 and the first sheet metal part 311, without the need for additional insulation structure.

[0070] The structure of the first insulating member 321, the first sheet metal member 311, and the second insulating member 322 stacked on top of each other can buffer the expansion force and simplify the overall connection structure. In addition, the first insulating member 321 can also serve as insulation between the battery cell 20 and the first sheet metal member 311, further simplifying the structure.

[0071] In some embodiments, the metal part 31 further includes a second sheet metal part 312 fixedly connected to the housing 10, the second sheet metal part 312 abutting against the side surface of the second insulating part 322 opposite to the first sheet metal part 311 along the first direction a.

[0072] Specifically, the second sheet metal part 312 can be fixedly connected to the housing 10 by, but is not limited to, welding, screwing, or other connection methods. The second sheet metal part 312 is located on the side opposite to the battery cell 20, and the second sheet metal part 312 can abut against the second insulating part 322 along the first direction a.

[0073] In this way, the second sheet metal part 312 can further provide support and limit the foundation, thereby improving the overall structural strength of the expansion beam 30.

[0074] In some embodiments, the first insulating member 321, the first sheet metal member 311, the second insulating member 322, and the second sheet metal member 312 are detachably connected.

[0075] like Figure 4 As shown, specifically, the first insulating component 321, the first sheet metal component 311, the second insulating component 322, and the second sheet metal component 312 can be detachably connected by riveting or screwing. That is, rivets or screws are sequentially inserted into the first insulating component 321, the first sheet metal component 311, the second insulating component 322, and the second sheet metal component 312 to connect them.

[0076] like Figure 5 As shown, furthermore, the first insulating member 321, the first sheet metal member 311, the second insulating member 322, and the second sheet metal member 312 can also be detachably connected in other ways. Taking the connection between the first sheet metal member 311 and the second insulating member 322 as an example, multiple first snap-fit ​​holes 319 can be opened on the first sheet metal member 311, and multiple second snap-fit ​​holes 324 can be correspondingly opened on the second insulating member 322. The hole walls of the first snap-fit ​​holes 319 or the second snap-fit ​​holes 324 are protruding to facilitate snap-fit ​​between the first snap-fit ​​holes 319 and the second snap-fit ​​holes 324 through the protruding parts. In this way, not only can the opening method reduce weight, but it can also achieve a detachable connection between the first insulating member 321, the first sheet metal member 311, the second insulating member 322, and the second sheet metal member 312.

[0077] This allows for more flexible adjustments to the actual structures of the first insulator 321, the first sheet metal part 311, the second insulator 322, and the second sheet metal part 312. For example, if the expansion force of the battery cell 20 is small, the second sheet metal part 312 can be removed. When different external structures need to be installed, the appropriate first insulator 321 or second insulator 322 can be selected for installation according to the actual situation.

[0078] Based on this, the above structure allows for the selection of various combinations of the first insulating component 321, the first sheet metal component 311, the second insulating component 322, and the second sheet metal component 312, thereby more accurately adapting to battery devices 100 with different structures.

[0079] like Figure 3 , Figure 4 , Figure 6 as well as Figure 7 As shown, in some embodiments, the second sheet metal part 312 includes a support portion 313 and a first connecting portion 314 and a second connecting portion 315 respectively connected to opposite ends of the support portion 313 along a second direction b. Both the first connecting portion 314 and the second connecting portion 315 extend along a first direction a. The first connecting portion 314 and the support portion 313 are detachably connected to the first sheet metal part 311, and the second connecting portion 315 is fixedly connected to the housing 10. At least a portion of the support portion 313 abuts against the second insulating member 322 along the first direction a. The second direction b intersects with the first direction a.

[0080] Specifically, the second direction b is perpendicular to the first direction a. When the first direction a is perpendicular to the large surface of the battery cell 20, that is, when the first direction a is set as the thickness direction of the battery cell 20, the second direction b can be set as the height direction of the battery cell 20.

[0081] The first connecting part 314 and the second connecting part 315 are respectively connected to the opposite ends of the support part 313 along the second direction b, and the first connecting part 314 and the second connecting part 315 are both extended along the first direction a. That is to say, the first connecting part 314, the support part 313 and the second connecting part 315 together form a U-shaped structure.

[0082] In this way, the second connecting part 315 can be fixedly connected to the bottom plate of the housing 10, and the first connecting part 314 and the support part 313 can be detachably connected to the first sheet metal part 311. At the same time, the support part 313 can also abut against the second insulating part 322 along the first direction a, thereby improving the overall support strength of the expansion beam 30.

[0083] The first connecting part 314 and the supporting part 313 can be detachably connected to the first sheet metal part 311 by means of riveting or screwing.

[0084] The above structure can further improve the overall support strength of the expansion beam 30 and make the connection between the second sheet metal part 312 and the first sheet metal part 311, the first insulating part 321 and the second insulating part 322 more stable.

[0085] In some embodiments, the support portion 313 includes a first sub-portion 316 and a second sub-portion 317 connected to each other. The first sub-portion 316 is connected to a first connecting portion 314, and the second sub-portion 317 is connected to a second connecting portion 315. The first sub-portion 316 abuts against the second insulating member 322 along a first direction a, and the second sub-portion 317 extends in a direction away from the second insulating member 322, forming a cavity 318 between itself and the second insulating member 322.

[0086] The first connecting portion 314, the first sub-portion 316, the second sub-portion 317 and the second connecting portion 315 are connected in sequence, wherein the first sub-portion 316 abuts against the second insulating member 322 along the first direction a, and the second sub-portion 317 bends and extends in a direction away from the second insulating member 322 so that a cavity 318 is formed between the second sub-portion 317 and the second insulating member 322.

[0087] Thus, the support portion 313 can be detachably connected to the first insulating member 321, the first sheet metal member 311, and the second insulating member 322 via the first sub-part 316. Meanwhile, the cavity 318 between the second sub-part 317 and the second insulating member 322 can further improve the support strength of the second sheet metal member 312.

[0088] Please refer to it again. Figure 2 and Figure 3 In some embodiments, the surface of the second insulating member 322 facing the cavity 318 has a reinforcing rib 323 protruding out, and the shape of the reinforcing rib 323 matches the shape of the cavity 318.

[0089] Specifically, a reinforcing rib 323 protrudes from the surface of the second insulating member 322 facing the cavity 318. The reinforcing rib 323 can abut against the surface of the second sub-part 317, and the reinforcing rib 323 is designed to conform to the shape of the second sub-part 317, that is, the shape of the reinforcing rib 323 matches the shape of the cavity 318, so that the reinforcing rib 323 can abut against the second sub-part 317 more stably.

[0090] Thus, by setting the reinforcing rib 323, the support strength can be further improved, and the expansion force can be buffered and transmitted.

[0091] In some embodiments, the expansion beams 30 include at least two beams and are spaced apart in the receiving cavity 11 along a first direction a. The battery cells 20 are disposed between each pair of adjacent expansion beams 30 and abut against the expansion beams 30 on both sides along the first direction a.

[0092] When the number of expansion beams 30 is set to two, the two expansion beams 30 are spaced apart along the first direction a, and the battery cell 20 is placed between the two expansion beams 30. At this time, the two expansion beams 30 support and limit the battery cell 20 between them along the first direction a.

[0093] The number of expansion beams 30 can also be set to three or more. For example, when set to three, the three expansion beams 30 are all spaced apart along the first direction a, and a battery cell 20 is provided between each two adjacent expansion beams 30. The battery cell 20 can abut against the expansion beams 30 on both sides along the first direction a.

[0094] In addition, the battery device 100 typically includes a steel strip, the two ends of which can be connected to two adjacent expansion beams 30 along the first direction a, so that the battery cell 20 can be more stably abutted against the expansion beams 30.

[0095] The above structure allows the battery cell 20 to be more stably abutted against the expansion beams 30 on both sides, enabling the expansion beams 30 to better provide anti-expansion force.

[0096] Based on the same concept as the battery device 100 described above, this application also provides an electrical device including the battery device 100 as described above.

[0097] According to one or more embodiments, in specific use, the first sheet metal part 311 is first fixed to the bottom plate or water-cooling plate of the bottom of the housing 10, and then the first insulating part 321 and the second insulating part 322 are respectively installed on opposite sides of the first sheet metal part 311. Further, the second sheet metal part 312 is then fixed to the bottom plate or water-cooling plate of the bottom of the housing 10, and the first sub-part 316 of the second sheet metal part 312 abuts against the second insulating part 322.

[0098] The first insulating component 321, the first sheet metal component 311, the second insulating component 322, and the second sheet metal component 312 are detachably connected by riveting or screwing to form a single integral structure. Meanwhile, since the first insulating component 321 and / or the second insulating component 322 are integrally formed with mounting parts 40, the output pole or other functional components can be installed and connected through the mounting parts 40.

[0099] Therefore, the expansion beam 30 can not only support and limit the battery cell 20, but also install and connect the output pole or other functional components, which can effectively simplify the overall connection structure and improve the connection stability.

[0100] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery device, characterized in that, include: The box-shaped enclosure has a receiving cavity; A single battery cell is disposed within the receiving cavity; An expansion beam is disposed within the receiving cavity and abuts against the battery cell within the receiving cavity to resist the expansion force of the battery cell; and Mounting components are installed on the expansion beam and are used to install external structures; The expansion beam includes interconnected metal and non-metal parts. The metal parts are fixedly connected to the box body, and the mounting parts are disposed on the non-metal parts and integrally formed with the non-metal parts. The non-metallic component includes a first insulating component and a second insulating component. The metallic component includes a first sheet metal component that is fixedly connected to the housing. The first insulating component and the second insulating component are respectively connected to opposite sides of the first sheet metal component along a first direction. The mounting component is integrated on at least one of the first insulating component and the second insulating component. The battery cell abuts against the first insulating component along the first direction.

2. The battery device according to claim 1, characterized in that, The metal component also includes a second sheet metal component that is fixedly connected to the housing, the second sheet metal component abutting against the side surface of the second insulating component opposite to the first sheet metal component along the first direction.

3. The battery device according to claim 2, characterized in that, The first insulating component, the first sheet metal component, the second insulating component, and the second sheet metal component are detachably connected.

4. The battery device according to claim 2, characterized in that, The second sheet metal part includes a support portion and a first connecting portion and a second connecting portion respectively connected to opposite ends of the support portion along a second direction. Both the first connecting portion and the second connecting portion extend along the first direction. The first connecting part and the supporting part are detachably connected to the first sheet metal part, the second connecting part is fixedly connected to the box body, and at least part of the supporting part abuts against the second insulating part along the first direction; The second direction intersects with the first direction.

5. The battery device according to claim 4, characterized in that, The support portion includes a first sub-part and a second sub-part that are connected to each other. The first sub-part is connected to the first connecting portion, and the second sub-part is connected to the second connecting portion. The first sub-part abuts against the second insulating member along the first direction, and the second sub-part extends away from the second insulating member in a direction and forms a cavity with a gap between it and the second insulating member.

6. The battery device according to claim 5, characterized in that, The second insulating member has a reinforcing rib protruding from its surface facing the cavity, and the shape of the reinforcing rib matches the shape of the cavity.

7. The battery device according to claim 1, characterized in that, The expansion beams include at least two beams and are spaced apart in the receiving cavity along a first direction. A plurality of battery cells are arranged between each pair of adjacent expansion beams and abut against the expansion beams on both sides along the first direction.

8. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-7.

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