Battery devices and electrical appliances

Abstract

This application relates to the field of battery structure technology, and provides a battery device and an electrical device. The battery device includes a housing, a reinforcing member, and multiple battery cells. The housing includes a first housing, a mounting structure, and a first beam. Along a first direction, multiple first beams are sequentially spaced within the first housing, and at least one set of two adjacent first beams are spaced apart to form a receiving cavity. Multiple battery cells are stacked in the receiving cavity along the first direction. The mounting structure is disposed in the receiving cavity and connected to the first housing. The reinforcing member is used to connect the first beam. The reinforcing member has a clearance hole through it along a second direction. The mounting structure is configured to pass through the clearance portion along the second direction. In the battery device provided by the embodiments of this application, when the reinforcing member is connected to the first beam, the mounting structure can pass through the clearance portion along the second direction. Thus, the reinforcing member can avoid the mounting structure through the clearance hole during assembly, thereby effectively reducing the impact of the mounting structure on the assembly of the reinforcing member.

Description

Technical Field

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

[0002] During use, individual battery cells expand due to cyclic use. Related technologies primarily address this by installing a first beam within the housing, which abuts against opposite sides of the battery cell assembly along its arrangement direction. A steel pressure strip is then installed on top of the battery cell assembly, connecting to the first beams on both sides, to resist the expansion of the battery cells. However, when a mounting structure is present within the housing, interference can occur between the steel pressure strip and the mounting structure, thus affecting its functionality. Utility Model Content

[0003] The purpose of this application is to provide a battery device and an electrical device, which aims to solve the problem that the installation of the reinforcing member connecting the first beam is affected when a mounting structure is installed inside the battery device's housing.

[0004] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0005] In a first aspect, embodiments of this application provide a battery device, including a housing, a reinforcing member, and multiple battery cells; the housing includes a first housing, a mounting structure, and a first beam; along a first direction, multiple first beams are sequentially spaced within the first housing, and at least one set of adjacent first beams are spaced apart to form a receiving cavity; multiple battery cells are stacked within the receiving cavity along the first direction; the mounting structure is disposed within the receiving cavity and connected to the first housing; the opposite ends of the reinforcing member are connected to the corresponding first beam; along a second direction, a clearance hole is provided through the reinforcing member, and the mounting structure is configured to pass through the clearance hole along the second direction; wherein, the first direction is perpendicular to the second direction.

[0006] The beneficial effects of the embodiments of this application are as follows: The battery device provided in the embodiments of this application has a clearance hole through the reinforcing member. When the reinforcing member is connected to the first beam, the mounting structure can pass through the clearance hole in the second direction. In this way, the reinforcing member can avoid the mounting structure through the clearance hole during assembly, thereby effectively reducing the impact of the mounting structure on the assembly of the reinforcing member.

[0007] In some embodiments, the reinforcing member includes a clearance portion and a connecting portion. The clearance portion is annular and has clearance holes formed around it. Along a first direction, connecting portions are provided at opposite ends of the clearance portion, and the connecting portions are connected to the corresponding first beam.

[0008] By adopting the above technical solution, the avoidance hole formed by the annular avoidance part is used to avoid the mounting structure, and the connection part is used to connect with the corresponding first beam, so that the assembly operation of the reinforcement can be realized.

[0009] In some embodiments, at least one side of the clearance portion extends outward along a first direction to form an extension portion, which is connected to the connecting portion.

[0010] By adopting the above technical solution, and by using the extension formed by the avoidance part extending along the first direction to connect with the connecting part, the impact on the strength of the avoidance part when connecting with the connecting part can be effectively reduced.

[0011] In some embodiments, the reinforcing member further includes a first reinforcing portion, which is stacked on at least one side surface of the clearance portion and connected to the clearance portion along a second direction.

[0012] By adopting the above technical solution, the first reinforcing part is stacked on the surface of the avoidance part along the second direction and connected to the avoidance part, thereby strengthening the structure of the avoidance part by using the first reinforcing part, so as to reduce the probability of the avoidance part breaking.

[0013] In some embodiments, along the second direction, the first reinforcement portion covers the corresponding side surface of the avoidance portion.

[0014] By adopting the above technical solution, the first reinforcing part can be covered on the surface of the avoidance part along the second direction, which can further enhance the strengthening effect on the annular main body.

[0015] In some embodiments, along the second direction, the first reinforcement portion also covers at least a portion of the surface of the extension portion and is connected to the extension portion.

[0016] By adopting the above-mentioned technical solution, the first reinforcing part can also cover and connect at least part of the extension part along the second direction, thereby further enhancing the overall strength of the avoidance part and the extension part.

[0017] In some embodiments, the reinforcing member further includes a second reinforcing portion disposed on at least one side surface of the connecting portion along a second direction, wherein the connecting portion, the second reinforcing portion, and the first beam form a connection at the overlap.

[0018] By adopting the above technical solution, the second reinforcing part can strengthen the connection between the reinforcing member and the first beam, thereby effectively reducing the probability of the reinforcing member breaking at the connection with the first beam.

[0019] In some embodiments, along the second direction, the connecting portion is provided with a connecting hole, and the second reinforcing portion is provided with a first through hole, the connecting hole communicating with the first through hole; the battery device also includes a locking accessory, the locking accessory passing through the connecting hole and the first through hole and being locked onto the first beam.

[0020] By adopting the above technical solution, the second reinforcing part is used to connect the part of the reinforcing member where the connection hole is opened to form a reinforcing effect, thereby effectively reducing the probability of fatigue cracking of the reinforcing member at the connection hole.

[0021] In some embodiments, the clearance portion and the connecting portion are an integral structure; or, the clearance portion and the connecting portion are separate but fixedly connected.

[0022] By adopting the above technical solutions, the avoidance part and the connecting part are set as an integral structure, thereby making the overall structural strength of the reinforcement better; or, the avoidance part and the connecting part are set as separate structures, so that connecting parts or avoidance parts of different length specifications can be connected according to needs, thereby matching the spacing of two adjacent first beams along the first direction, which is conducive to improving the applicability of the reinforcement.

[0023] In some embodiments, the battery device further includes a first insulating member disposed on the side of the reinforcing member facing the battery cell; the first insulating member is provided with a protective cavity, and a second through hole is provided through the first insulating member along a second direction, the second through hole communicating with the protective cavity; at least a portion of the reinforcing member is accommodated in the protective cavity, and the second through hole communicates with the clearance hole.

[0024] By adopting the above technical solution, the first insulating member can insulate at least a portion of the reinforcing member from the battery cell, thereby effectively reducing the probability of short circuit between the reinforcing member and the battery cell; at the same time, at least a portion of the reinforcing member can be housed in the protective cavity, so that even if the reinforcing member suffers fatigue fracture, the fractured portion can still be housed in the protective cavity, thereby effectively reducing the probability of short circuit caused by damage to the battery cell due to the fracture.

[0025] In some embodiments, a first adhesive layer is provided inside the protective cavity, and the reinforcing member is fixedly connected to the inner wall of the protective cavity through the first adhesive layer.

[0026] By adopting the above technical solution, the reinforcing member is fixedly connected to the inner wall of the protective cavity using the first adhesive layer, which can effectively improve the stability of the reinforcing member housed in the protective cavity.

[0027] In some embodiments, the battery device further includes a second insulating member, on which a third through hole is formed; along a second direction, the second insulating member covers the side of the reinforcing member opposite to the battery cell, the second insulating member seals the protective cavity, and the third through hole communicates with the clearance hole.

[0028] By adopting the above technical solution, the second insulating component is applied to the side of the reinforcing component away from the battery cell, which can further improve the insulation and protection effect of the reinforcing component. At the same time, the second insulating component can also cover the protective cavity, which can further reduce the probability that the fracture or fracture block will be exposed outside the protective cavity when the reinforcing component breaks at the opening of the avoidance hole.

[0029] In some embodiments, at least a portion of the surface of the reinforcement is covered with an insulating layer.

[0030] By adopting the above technical solution, at least part of the surface of the reinforcing member is covered with an insulating layer to form an insulating protection, which can further improve the insulating protection effect of the reinforcing member.

[0031] In some embodiments, the battery device further includes a pressure strip structure, which is provided on the side of the reinforcing member located outside the protective cavity facing the battery cell along the second direction, and the pressure strip structure abuts against the surface of the plurality of battery cells.

[0032] By adopting the above technical solution, the pressure strip structure is set on one side of the reinforcing member and abuts against the surface of multiple battery cells. In this way, the force generated by the expansion of multiple battery cells can be more evenly transmitted to the reinforcing member through the pressure strip structure, which can effectively reduce the probability of the reinforcing member breaking due to stress concentration.

[0033] In some embodiments, a second adhesive layer is provided between the pressure strip structure and the insulation layer, and the pressure strip structure is fixedly connected to the insulation layer through the second adhesive layer.

[0034] By adopting the above technical solution, the second adhesive layer is used to bond and fix the pressure strip structure to the insulating layer on the surface of the reinforcing member, which can effectively improve the assembly stability of the pressure strip structure.

[0035] In some embodiments, the housing further includes a second housing connected to the first housing and covering the receiving cavity; the battery device further includes a partition structure disposed between the reinforcing member and the second housing along a second direction.

[0036] By adopting the above technical solution, by setting a partition structure between the reinforcing member and the second housing along the second direction, the partition structure can support the second housing and the reinforcing member, thereby reducing the probability of the insulation layer on the surface of the second housing and the reinforcing member coming into contact, and thus effectively reducing the probability of the insulation layer on the surface of the reinforcing member being worn and causing insulation failure.

[0037] Secondly, embodiments of this application also provide an electrical device, which includes a battery device as described above, and the battery device is used to provide electrical energy.

[0038] The beneficial effects of the embodiments of this application are as follows: The electrical device provided in the embodiments of this application includes the above-mentioned battery device. Since the reinforcing member of the battery device can avoid the mounting structure for assembly, the battery device mounting and assembly operation is less affected, which facilitates the assembly operation of the electrical device. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0041] Figure 2 An exploded view of the battery device provided in the embodiments of this application;

[0042] Figure 3 This is an exploded structural diagram of a battery cell provided in an embodiment of this application;

[0043] Figure 4 A schematic diagram showing the distribution of the reinforcing members and mounting structures in the first housing according to embodiments of this application;

[0044] Figure 5 for Figure 4 A magnified view of part A;

[0045] Figure 6 A top view of the reinforcement provided in the embodiments of this application when the second insulating member is removed;

[0046] Figure 7 An exploded view of the component during the removal of the second insulating element, provided in an embodiment of this application;

[0047] Figure 8 for Figure 7 A magnified view of part B;

[0048] Figure 9 This is a schematic diagram of the structure when the second reinforcing part is connected to the connecting part, as provided in the embodiments of this application.

[0049] The following are the labeling elements in the figure:

[0050] 1000, vehicles;

[0051] 100. Battery assembly; 200. Controller; 300. Motor;

[0052] 10. Box body; 101. Receiving cavity; 11. First box body; 12. Second box body; 13. Mounting structure; 14. First beam;

[0053] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 23a. Tab;

[0054] 30. Reinforcing member; 301. Clearance hole; 31. Clearance portion; 32. Connecting portion; 321. Connecting hole; 33. Extension portion; 34. First reinforcing portion; 35. Second reinforcing portion; 351. First through hole; 36. Insulating layer; 37. Second adhesive layer;

[0055] 40. First insulating component; 401. Protective cavity; 402. Second through hole; 40a. First adhesive layer;

[0056] 50. Second insulating component; 501. Third through hole;

[0057] 60. Strip structure; 70. Divider structure;

[0058] X, first direction; Z, second direction. Detailed Implementation

[0059] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0060] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] During use, individual battery cells expand due to repeated use. Related technologies primarily address this by installing a first beam within the housing, which abuts against opposite sides of the battery cell assembly along its arrangement direction. A steel pressure strip is then installed on top of the battery cell assembly, connecting to the first beams on both sides, to resist the expansion of the battery cells. However, when a mounting structure is present within the housing, interference can occur between the steel pressure strip and the mounting structure, making it difficult to connect and assemble the steel pressure strip.

[0064] Based on the above considerations, in order to solve the problem that the installation of the reinforcing member connecting the first beam is affected when the mounting structure is set in the battery device box, a battery device is designed. By opening a clearance hole in the reinforcing member that runs through the second direction, when the reinforcing member is connected to the corresponding first beam, the mounting structure set in the receiving cavity of the first box can pass through the clearance part in the second direction. In this way, the mounting structure has less impact on the connection and assembly of the reinforcing member. Even when the mounting structure is set in the first box, the reinforcing member can still be connected and assembled normally.

[0065] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0066] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0067] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0068] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0069] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0070] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 20.

[0071] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into a single module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0072] In some embodiments, the battery device may be a battery pack, which includes a housing 10 and one or more battery cell assemblies housed in the housing 10.

[0073] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0074] As an example, the battery cell assembly can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0075] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0076] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms an enclosed space to accommodate the battery cell assembly.

[0077] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0078] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0079] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0080] The battery cell 20 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] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit that makes up a battery device. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0082] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment; the shape of end cap 21 can be adapted to the shape of housing 22 to fit housing 22. Optionally, end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed when subjected to compression and impact, so that battery cell 20 can have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used to electrically connect with electrode assembly 23 for outputting or inputting electrical energy of battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0083] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The housing 22 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0084] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The housing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly, while the portions of the positive and negative electrode sheets without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device 100, active ions (e.g., lithium ions) reversibly insert and extract between the positive and negative electrode sheets to achieve charging and discharging, and the tabs connect to the electrode terminals to form a current loop.

[0085] According to some embodiments of this application, refer to Figures 3 to 6 This application provides a battery device 100, including a housing 10, a reinforcing member 30, and a plurality of battery cells 20. The housing 10 includes a first housing 11, a mounting structure 13, and a first beam 14. Along a first direction X, a plurality of first beams 14 are sequentially spaced within the first housing 11, and at least one set of two adjacent first beams 14 are spaced apart to form a receiving cavity 101. A plurality of battery cells 20 are stacked along the first direction X within the receiving cavity 101. The mounting structure 13 is disposed within the receiving cavity 101 and connected to the first housing 11. The opposite ends of the reinforcing member 30 are connected to the corresponding first beams 14. Along a second direction Z, a clearance hole 301 is provided through the reinforcing member 30, and the mounting structure 13 is configured to pass through the clearance hole 301 along the second direction Z. The first direction X is perpendicular to the second direction Z.

[0086] The enclosure 10 includes a first enclosure 11, a mounting structure 13, and a first beam 14; wherein, the first enclosure 11 refers to a basin-shaped structure with an internal accommodating space. Optionally, the first enclosure 11 may be, but is not limited to, a steel structure, an aluminum structure, or a composite structure (such as a steel-aluminum alloy structure, a copper-aluminum alloy structure, a steel-copper alloy structure, etc.).

[0087] The first beam 14 includes, but is not limited to, beam structures such as extruded aluminum beams and profile beams. There can be multiple first beams 14, such as two, three or more; multiple first beams 14 are arranged sequentially in the first box body 11 along the first direction X.

[0088] Optionally, the first beam 14 and the first box body 11 can be fixedly connected by means of welding, bonding, bolting or other methods.

[0089] Among the plurality of first beams 14, at least one set of two adjacent first beams 14 are spaced apart to form a receiving cavity 101; thus, a plurality of battery cells 20 can be stacked in the receiving cavity 101 along the first direction X.

[0090] Optionally, in some embodiments, the number of first beams 14 can be two, and the diameter of the two first beams 14 forms a receiving cavity 101; or, in other embodiments, the number of first beams 14 can be more than two, for example three, and the three first beams 14 are arranged sequentially at intervals along the first direction X, so that the three first beams 14 can form two independent receiving cavities 101.

[0091] It should be understood that since multiple battery cells 20 are stacked along the first direction X, when a battery cell 20 expands during operation, the expansion of the multiple battery cells 20 will be superimposed along the first direction X. The first beam 14 located at the opposite ends of the multiple battery cells 20 along the first direction X can provide abutment support for the battery cells 20. This can effectively limit the expansion process of the battery cells 20 and reduce the impact of the expansion of the battery cells 20 on other components inside the first housing 11.

[0092] For example, in some embodiments, a block-shaped prismatic battery cell is used as an example for illustration. The side of the prismatic battery cell with a large surface can be arranged facing the first direction X, so that the large surfaces of multiple prismatic battery cells are stacked along the first direction X. The first and last of the multiple prismatic battery cells stacked along the first direction X respectively abut against the first beam 14 on the corresponding side, and the first beam 14 is used to abut against and support the multiple stacked prismatic battery cells 20.

[0093] It should be understood that the aforementioned first direction X refers to any direction intersecting the length or width direction of the first housing 11. For example, in some embodiments, the first direction X may be parallel to the length direction of the first housing 11; or, the first direction X may be parallel to the width direction of the first housing 11.

[0094] Mounting structure 13 refers to a connecting component used to connect with an external structure so that the battery device 100 forms a mounted assembly. Optionally, mounting structure 13 includes, but is not limited to, a locking structure (such as a nut, or a locking block, locking beam, etc. with threaded holes) for fastener attachment.

[0095] For example, in some embodiments, a mounting beam can be provided in the receiving cavity 101. The mounting beam can be welded and fixed to the first box 11, and the mounting structure 13 can be fixed to the mounting beam by means of embedding, welding or other methods, so as to provide mounting connection between the mounting structure 13 and the external structure.

[0096] The reinforcing member 30 refers to a structural component used to connect the first beam 14 and reinforce the first beam 14. Optionally, the reinforcing member 30 can be made of high-strength steel or high-strength composite material.

[0097] Optionally, the number of reinforcing members 30 can be one, two, or more than two; one or more reinforcing members 30 can be sequentially and spaced above the battery cell 20 and connected to the first beam 14 on opposite sides.

[0098] Along the second direction Z, a clearance hole 301 is provided through the reinforcing member 30; it can be understood that the clearance hole 301 refers to the through hole structure that passes through the reinforcing member 30 along the second direction Z, so that the mounting structure 13 can pass through the clearance hole 301 along the second direction Z and form a clearance with the reinforcing member 30.

[0099] Optionally, in some embodiments, the clearance hole 301 can be a hole structure formed in the middle of the reinforcing member 30. Alternatively, in other embodiments, the clearance hole 301 can pass through the reinforcing member 30 and communicate with the outside in any direction perpendicular to the second direction Z, so that the portion of the reinforcing member 30 forming the clearance hole 301 has an arc-shaped segment structure.

[0100] The second direction Z mentioned above refers to a direction perpendicular to the first direction X. For example, the second direction Z can be parallel to the height direction of the first box 11.

[0101] The battery device 100 provided in this application embodiment has a clearance hole 301 through the reinforcing member 30. When the two ends of the reinforcing member 30 are respectively connected to the first beam 14 on the corresponding side along the first direction X, the mounting structure 13 can pass through the clearance hole 301 of the reinforcing member 30 along the second direction Z. In this way, the reinforcing member 30 can avoid the mounting structure 13 through the clearance hole 301 during assembly, thereby effectively reducing the impact of the mounting structure 13 on the assembly of the reinforcing member 30.

[0102] Please refer to Figure 5 and Figure 6 In some embodiments, the reinforcing member 30 includes a clearance portion 31 and a connecting portion 32. The clearance portion 31 is annular and a clearance hole 301 is formed around the clearance portion 31. Along the first direction X, a connecting portion 32 is provided at each of the opposite ends of the clearance portion 31, and the connecting portion 32 is connected to the corresponding first beam 14.

[0103] The reinforcing member 30 includes a clearance portion 31 and a connecting portion 32; it can be understood that the clearance portion 31 and the connecting portion 32 are two parts of the reinforcing member 30; the clearance portion 31 refers to the part that intersects with the mounting structure 13 and forms a clearance hole 301, while the connecting portion 32 refers to the other part that is connected to the first beam 14.

[0104] The clearance portion 31 is annular; optionally, the clearance portion 31 may be, but is not limited to, a circular ring, an elliptical ring, a waist-shaped ring, a rectangular ring, or other annular structures. Understandably, in the annular clearance portion 31, the hollow portion formed by the clearance portion 31 is the clearance hole 301.

[0105] For example, in some embodiments, the clearance portion 31 may be a circular plate or sheet structure, and a circular clearance hole 301 is provided at the center of the clearance portion 31, so that the clearance portion 31 can form an annular plate or sheet structure.

[0106] The connecting part 32 may be, but is not limited to, a rod-shaped structure, a column-shaped structure, a plate-shaped structure, a sheet-shaped structure, etc.; the connecting part 32 extends along the first direction X and is attached to the first beam 14 on the corresponding side to connect the two spaced first beams 14 and achieve a strengthening effect.

[0107] Optionally, the clearance portion 31 and the connecting portion 32 can be fixedly connected by welding, locking or other means to form an integral unit; or, the clearance portion 31 and the connecting portion 32 can be an integral structure, for example, formed by sheet metal stamping.

[0108] The connecting part 32 can be fixedly connected to the corresponding first beam 14 by means of welding, bolting or other methods.

[0109] For example, in some embodiments, the clearance portion 31 may be in the form of a ring structure. Along the first direction X, the two opposite ends of the clearance portion 31 are welded and fixedly connected with connecting portions 32. The connecting portions 32 at the opposite ends are respectively connected to the two first beams 14 that form the receiving cavity 101 one by one. For example, the connecting portions 32 are locked to the top of the corresponding first beams 14 by bolts, so that the reinforcing member 30 is attached to the two corresponding first beams 14 to realize the assembly operation of the reinforcing member 30.

[0110] With this configuration, the mounting structure 13 is avoided by using the annular clearance portion 31 to form a clearance hole 301, and the connection portion 32 is used to connect with the corresponding first beam 14, thus enabling the assembly operation of the reinforcing member 30.

[0111] Please refer to Figure 5 and Figure 6 In some embodiments, at least one side of the avoidance portion 31 extends outward along the first direction X to form an extension portion 33, and the extension portion 33 is connected to the connecting portion 32.

[0112] Understandably, the extension 33 refers to the portion formed by the avoidance portion 31 extending outward along the first X direction. Thus, along the first X direction, the width of the extension 33 from the side surface of the avoidance portion 31 away from the inner ring surface of the avoidance portion 31 is greater than the ring width between the inner and outer ring surfaces at any point of the ring-shaped avoidance portion 31.

[0113] Optionally, along the first direction X, one side of the avoidance portion 31 extends outward to form an extension portion 33; or, along the first direction X, the opposite sides of the avoidance portion extend outward respectively and each has an extension portion 33.

[0114] The extension 33 may be, but is not limited to, a plate structure or sheet structure of various configurations such as rectangular or arc-shaped.

[0115] In some embodiments, the extension 33 and the avoidance portion 31 are integrally formed, for example by sheet metal stamping.

[0116] In this embodiment, the extension 33 is connected to the connecting part 32; optionally, the extension 33 may be fixedly connected to the connecting part 32 by means of welding, fastener fastening or other methods.

[0117] For example, in some embodiments, the extension 33 and the connecting portion 32 can be stacked along the second direction Z and welded together to form a single unit. Meanwhile, to further enhance the connection strength between the extension 33 and the connecting portion 32, a two-layer spot welding operation can be used to weld and fix the extension 33 and the connecting portion 32.

[0118] It should be understood that since a through-hole 301 is formed in the middle of the clearance portion 31, the structural strength of the clearance portion 31 will be affected to some extent. By using the extension portion 33 formed by the clearance portion 31 extending along the first direction X to connect with the connecting portion 32, the further strength impact on the clearance portion 31 when connected with the connecting portion 32 can be effectively reduced, thereby effectively reducing the probability of fatigue fracture of the clearance portion 31.

[0119] Please refer to Figures 5 to 8 In some embodiments, the reinforcing member 30 further includes a first reinforcing portion 34, which is stacked on at least one side surface of the clearance portion 31 and connected to the clearance portion 31 along the second direction Z.

[0120] Understandably, the first reinforcing part 34 includes, but is not limited to, structural components used for structural reinforcement such as reinforcing plates, reinforcing blocks, and reinforcing mesh. The material of the first reinforcing part 34 can be the same as that of the clearance part 31, such as a high-strength material like steel alloy.

[0121] Along the second direction Z, the first reinforcing part 34 may be stacked on at least one side of the clearance part 31; for example, the first reinforcing part 34 may be stacked on one side of the clearance part 31, or the first reinforcing part 34 may be stacked on both opposite sides of the clearance part 31.

[0122] Optionally, the first reinforcing part 34 may be connected and fixed to the relief part 31 by one or more of the following methods: welding, bonding, bolting; in this way, the first reinforcing part 34 and the relief part 31 can form a multi-layer structure and achieve an overall strength improvement.

[0123] The first reinforcing part 34 may be, but is not limited to, a ring-shaped structure, an arc-shaped structure, a block-shaped structure, etc. Optionally, there may be one first reinforcing part 34, which is stacked on one side of the clearance part 31 and connected to the clearance part 31; or, there may be multiple first reinforcing parts 34, which may be stacked on one side of the clearance part 31 and cover the surface of the clearance part 31, and the multiple first reinforcing parts 34 and the clearance part 31 are all fixedly connected.

[0124] For example, in some embodiments, the first reinforcing part 34 can be a ring-shaped structure, such as a ring-shaped steel strip structure. The first reinforcing part 34 is stacked on the side of the clearance part 31 facing the battery cell 20 and welded and fixed to the clearance part 31. In this way, the first reinforcing part 34 can structurally strengthen the clearance part 31, and the ring-shaped first reinforcing part 34 can also avoid the clearance hole 301, so as to reduce the impact on the mounting structure 13 passing through the clearance hole 301. At the same time, when the clearance part 31 suffers fatigue fracture, the ring-shaped first reinforcing part 34 can still form a supporting connection for the clearance part 31, so as to reduce the probability of the broken clearance part 31 scratching or puncturing the battery cell 20.

[0125] In some embodiments, the configuration of the first reinforcing part 34 may be consistent with the configuration of the clearance part 31. The first reinforcing part 34 may be stacked on one side of the clearance part 31 along the second direction Z and completely overlap with the clearance part 31. For example, both the first reinforcing part 34 and the clearance part 31 may be annular steel strip structures.

[0126] With this configuration, the first reinforcing part 34 is stacked on the surface of the clearance part 31 along the second direction Z and connected to the clearance part 31. This allows the first reinforcing part 34 to structurally strengthen the clearance part 31, reducing the probability of the clearance part 31 breaking. Furthermore, by only stacking the first reinforcing part 34 on the clearance part 31, which is prone to fatigue fracture, and not covering the surface of the connecting part 32, the probability of fatigue fracture in the clearance part 31 due to the presence of the clearance hole 301 is reduced. Simultaneously, the weight impact on the reinforcing member 30 is minimized, thereby optimizing the overall weight of the battery device 100.

[0127] Please refer to Figures 5 to 8 In some embodiments, along the second direction Z, the first reinforcement 34 covers the corresponding side surface of the avoidance portion 31.

[0128] In this embodiment, the first reinforcing part 34 is configured to cover the corresponding side surface of the avoidance part 31 along the second direction Z; optionally, the first reinforcing part 34 may overlap with the surface of the avoidance part 31, or the surface of the first reinforcing part 34 may be larger than the surface of the avoidance part 31, so that the first reinforcing part 34 can completely cover the surface of the avoidance part 31.

[0129] With this configuration, the first reinforcing part 34 can cover the surface of the avoidance part 31 along the second direction Z and connect to the avoidance part 31. The first reinforcing part 34 can form a connection and reinforcement for the entire avoidance part 31, which can further enhance the strengthening effect of the avoidance part 31.

[0130] Please refer to Figures 5 to 8 In some embodiments, along the second direction Z, the first reinforcement 34 also covers at least a portion of the surface of the extension 33 and is connected to the extension 33.

[0131] In this embodiment, when the first reinforcing part 34 is applied to one side surface of the avoidance part 31 along the second direction Z, the first reinforcing part 34 can also be applied to at least a portion of the surface of the extension part 33 on the same side and connected to the extension part 33.

[0132] For example, along the second direction Z, the first reinforcing portion 34 can cover a portion of the surface of the corresponding side of the extension portion 33; or, along the second direction Z, the first reinforcing portion 34 can cover the entire surface of the corresponding side of the extension portion 33.

[0133] In some embodiments, the overall configuration of the avoidance portion 31 and the extension portion 33 disposed on the avoidance portion 31 can be consistent with the configuration of the first reinforcement portion 34, so that the first reinforcement portion 34 can completely overlap with the avoidance portion 31 and the extension portion 33 in the second direction Z.

[0134] Optionally, the connection method between the first reinforcing part 34 and the extension part 33 may be, but is not limited to, welding, bonding, or locking connection.

[0135] With this configuration, the first reinforcing part 34 can also cover and connect at least part of the extension part 33 along the second direction Z, which can further enhance the overall strength of the avoidance part 31 and the extension part 33.

[0136] Please refer to Figure 4 , Figure 6 , Figure 8 and Figure 9 In some embodiments, the reinforcing member 30 further includes a second reinforcing part 35 disposed on at least one side surface of the connecting part 32 along the second direction Z, and the connecting part 32, the second reinforcing part 35 and the first beam 14 are connected at the overlapping point.

[0137] Optionally, the second reinforcing part 35 may include, but is not limited to, reinforcing plates, reinforcing blocks, reinforcing mesh, and other structural components used for structural reinforcement; the second reinforcing part 35 may be, but is not limited to, a block-shaped structural component with a polygonal configuration such as a circular structure, a rectangular structure, or a triangular structure.

[0138] For example, in some embodiments, the second reinforcement 35 may be a rectangular pad structure.

[0139] The material of the second reinforcing part 35 can be the same as that of the connecting part 32, such as a high-strength material like steel alloy.

[0140] Along the second direction Z, the second reinforcing part 35 is disposed on at least one side surface of the connecting part 32; optionally, along the second direction Z, the second reinforcing part 35 is disposed on one side surface of the connecting part 32; or, the second reinforcing part 35 is disposed on both opposite sides surface of the connecting part 32.

[0141] The connecting part 32, the second reinforcing part 35, and the first beam 14 are connected at the overlapping point. Optionally, the connecting part 32, the second reinforcing part 35, and the first beam 14 can be fixedly connected at the overlapping point by means of welding, locking, or other methods.

[0142] For example, in some embodiments, the second reinforcing part 35 may be a pad structure. Along the second direction Z, the second reinforcing part 35 is fixed to the side surface of the connecting part 32 facing the first beam 14 by welding. The connecting part 32 may be connected to the first beam 14 by sequentially passing the connecting part 32 and the second reinforcing part 35 through a locking attachment, thereby making the second reinforcing part 35 located between the connecting part 32 and the first beam 14 and forming a reinforcing effect.

[0143] With this configuration, the second reinforcing part 35 can strengthen the connection between the connecting part 32 of the reinforcing member 30 and the first beam 14, thereby effectively reducing the probability of the reinforcing member 30 breaking at the connection with the first beam 14.

[0144] Please refer to Figure 4 , Figure 8 and Figure 9 In some embodiments, along the second direction Z, the connecting part 32 is provided with a connecting hole 321, and the second reinforcing part 35 is provided with a first through hole 351, and the connecting hole 321 is connected to the first through hole 351; the battery device 100 also includes a locking accessory (not shown in the figure), which is provided through the connecting hole 321 and the first through hole 351 and locked to the first beam 14.

[0145] In this embodiment, the connecting part 32 is provided with a connecting hole 321 through the second direction Z; it can be understood that the connecting hole 321 is used for the insertion of lock accessories.

[0146] Meanwhile, the second reinforcing part 35 is provided with a first through hole 351; wherein, the first through hole 351 is connected to the connecting hole 321, and the first through hole 351 is used for the insertion of lock accessories.

[0147] The aforementioned locking accessories refer to components such as bolts and screws used to achieve locking connections.

[0148] For example, in some embodiments, the second reinforcing part 35 can be a steel pad structure, and the connecting part 32 can be a steel pressure strip structure. The second reinforcing part 35 is fixed to the side surface of the connecting part 32 facing the first beam 14 in the second direction Z by welding, and the connecting hole 321 communicates with the first through hole 351. A locking attachment is used to pass through the connecting hole 321 and the first through hole 351 and lock it to the first beam 14 to achieve the purpose of fixing the connecting part 32 to the first beam 14, and the second reinforcing part 35 is located between the first beam 14 and the connecting part 32 to form a reinforcement effect.

[0149] With this configuration, the second reinforcing part 35 connects the area where the connecting hole 321 is opened on the reinforcing member 30 to form a reinforcing effect, thereby effectively reducing the probability of fatigue cracking of the reinforcing member 30 at the connecting hole 321.

[0150] Please refer to Figure 4 and Figure 6 In some embodiments, the clearance portion 31 and the connecting portion 32 are an integral structure; or, the clearance portion 31 and the connecting portion 32 are separately arranged and fixedly connected.

[0151] In this embodiment, the avoidance part 31 and the connecting part 32 can be set as an integral structure; that is, the avoidance part 31 and the connecting part 32 can be an integral structure formed by integral stamping, integral die casting or other methods.

[0152] It should be understood that when the relief part 31 and the connecting part 32 are an integral structure, the overall structural strength of the reinforcing member formed by the relief part 31 and the connecting part 32 is better, and the probability of stress concentration between the relief part 31 and the connecting part 32 is lower.

[0153] Alternatively, in this embodiment, the avoidance part 31 and the connecting part 32 can be two independent components, which are connected to form a whole by welding, locking and other operations.

[0154] For example, in some embodiments, when extension portions 33 are formed on opposite sides of the clearance portion 31 along the first direction X, the extension portions 33 on opposite sides of the clearance portion 31 are respectively fixedly connected to the connecting portions 32 by welding.

[0155] With this configuration, the avoidance part 31 and the connecting part 32 are set as separate structures. This allows the connecting part 32 of different lengths to be connected to the avoidance part 31 as needed, thereby matching the spacing of two adjacent first beams 14 along the first direction X, which is beneficial to improving the applicability of the reinforcing member 30.

[0156] Please refer to Figure 4 , Figure 6 and Figure 8 In some embodiments, the battery device 100 further includes a first insulating member 40, which is disposed on the side of the reinforcing member 30 facing the battery cell 20; a protective cavity 401 is provided on the first insulating member 40, and a second through hole 402 is provided through the first insulating member 40 along the second direction Z, which is connected to the protective cavity 401; at least a portion of the reinforcing member 30 is accommodated in the protective cavity 401, and the second through hole 402 is connected to the clearance hole 301.

[0157] The first insulating component 40 refers to a structural component with superior insulation performance. Optionally, the first insulating component 40 may be made of various insulating materials, including but not limited to injection-molded materials and vacuum-formed materials.

[0158] The first insulating member 40 is provided with a protective cavity 401, and the first insulating member 40 is provided on the side of the reinforcing member 30 facing the battery cell 20; thus, the protective cavity 401 can be used to accommodate at least part of the reinforcing member 30, so that the first insulating member 40 can be used to separate the reinforcing member 30 and the battery cell 20 to achieve insulation protection.

[0159] Optionally, the reinforcing member 30 can be completely housed in the protective cavity 401, and only the portion of the reinforcing member 30 used to connect the first beam 14 needs to be exposed to facilitate the connection operation; or, the reinforcing member 30 can be partially housed in the protective cavity 401, and the other portion extends out of the protective cavity 401 along the first direction X. For example, when the reinforcing member 30 includes a clearance portion 31 and a connecting portion 32, the clearance portion 31 can be housed in the protective cavity 401, a portion of the connecting portion 32 can extend into the protective cavity 401 to form a connection with the extension portion 33 provided on the clearance portion 31, and the other portion of the connecting portion 32 extends out of the protective cavity 401 and forms a connection with the first beam 14.

[0160] In some embodiments, the first insulating member 40 may be, but is not limited to, a basin structure, a cover structure, or a structure with a protective cavity 401 inside.

[0161] Along the second direction Z, the first insulating member 40 is provided with a second through hole 402, and the second through hole 402 is connected to the protective cavity 401; thus, when at least a part of the reinforcing member 30 is housed in the protective cavity 401, the second through hole 402 can be connected to the clearance hole 301 opened on the reinforcing member 30, so that the mounting structure 13 can pass through the second through hole 402 and the clearance hole 301 and form clearance.

[0162] It should be understood that in some embodiments, when the surface of the clearance portion 31 of the reinforcing member 30 is fixedly provided with the first reinforcing portion 34, the first reinforcing portion 34 may also be simultaneously housed within the protective cavity 401. For example, the first reinforcing portion 34 may be welded and fixed to the surface of the clearance portion 31 facing the battery cell 20. Thus, when the clearance portion 31 of the reinforcing member 30 is housed within the protective cavity 401, the first reinforcing portion 34 is simultaneously housed within the protective cavity 401, and the first reinforcing portion 34 is located between the clearance portion 31 and the inner wall of the protective cavity 401.

[0163] With this configuration, the first insulating member 40 can accommodate at least a portion of the reinforcing member 30 within the protective cavity 401 and provide insulation separation from the battery cell 20, thereby effectively reducing the probability of a short circuit between the reinforcing member 30 and the battery cell 20. At the same time, since the clearance hole 301 of the reinforcing member 30 is connected to the second through hole 402 of the first insulating member 40, that is, the clearance portion 31 forming the clearance hole 301 is located within the protective cavity 401, even if the clearance portion 31 experiences fatigue fracture, the fractured portion can still be accommodated within the protective cavity 401, thereby effectively reducing the probability of a short circuit caused by damage to the battery cell 20 due to the fracture.

[0164] Please refer to Figures 6 to 8 In some embodiments, a first adhesive layer 40a is provided inside the protective cavity 401, and the reinforcing member 30 is fixedly connected to the inner wall of the protective cavity 401 through the first adhesive layer 40a.

[0165] Optionally, the first adhesive layer 40a may be, but is not limited to, an adhesive structure such as backing adhesive or structural adhesive. The first adhesive layer 40a may be pre-coated on the inner wall surface of the protective cavity 401, or the first adhesive layer 40a may be pre-coated on the surface of the reinforcing member 30.

[0166] In this way, the first adhesive layer 40a can be used to fix and bond the reinforcing member 30 to the inner wall of the protective cavity 401, so that the reinforcing member 30 and the first insulating member 40 are fixed together. When the reinforcing member 30 suffers fatigue fracture, the reinforcing member 30 can still be fixed inside the protective cavity 401, which can further improve the reliability of the reinforcing member 30.

[0167] Please refer to Figures 6 to 8 In some embodiments, the battery device 100 further includes a second insulating member 50, on which a third through hole 501 is provided; along the second direction Z, the second insulating member 50 covers the side of the reinforcing member 30 away from the battery cell 20, the second insulating member 50 seals the protective cavity 401, and the third through hole 501 communicates with the clearance hole 301.

[0168] The second insulating component 50 refers to a structural component used to provide insulation protection for the reinforcing component 30 along the second direction Z and on the side opposite to the battery cell 20.

[0169] Optionally, the second insulating component 50 may include, but is not limited to, structural components with superior insulating properties such as insulating boards, insulating sheets, insulating covers, and insulating caps.

[0170] The second insulating member 50 can also cover the protective cavity 401. For example, in some embodiments, the second insulating member 50 can be connected to the cavity opening end of the first insulating member 40 along the second direction Z and away from the battery cell 20, so as to achieve the purpose of covering the protective cavity 401 with the second insulating member 50; or, in other embodiments, the second insulating member 50 can be covered on the side of the reinforcing member 30 along the second direction Z and away from the battery cell 20, and the second insulating member 50 can simultaneously form a sealing effect on the protective cavity 401.

[0171] Meanwhile, the third through hole 501 of the second insulating member 50 is connected to the clearance hole 301; thus, when the mounting structure 13 is inserted into the second through hole 402 and the clearance hole 301 to form clearance, the third through hole 501 can simultaneously form a clearance effect on the mounting structure 13, thereby reducing the impact of the setting of the second insulating member 50 on the penetration clearance of the mounting structure 13.

[0172] With this configuration, the second insulating element 50 is applied to the side of the reinforcing element 30 that is away from the battery cell 20, which can further improve the insulation and protection effect of the reinforcing element 30. At the same time, the second insulating element 50 can also cover the protective cavity 401, which can further reduce the probability that the fracture or fracture piece will be exposed outside the protective cavity 401 when the reinforcing element 30 breaks at the opening of the clearance hole 301.

[0173] Please refer to Figures 6 to 8 In some embodiments, at least a portion of the surface of the reinforcement 30 is covered with an insulating layer 36.

[0174] Understandably, insulation layer 36 refers to a layer structure used to cover the outer surface of reinforcement 30 and form an insulating protection for reinforcement 30.

[0175] Optionally, the insulating layer 36 includes, but is not limited to, structural components with superior insulating properties such as insulating film layers, insulating coatings, and insulating sleeves.

[0176] The insulating layer 36 can be applied to at least a portion of the outer surface of the reinforcing member 30; alternatively, the insulating layer 36 can be applied to the entire outer surface of the reinforcing member 30, or the insulating layer 36 can be applied to only a portion of the outer surface of the reinforcing member 30 to achieve a reinforcing protection effect at the corresponding location.

[0177] For example, an insulating layer 36 can be applied to the surface of the portion of the reinforcing member 30 located outside the protective cavity 401. In this way, the portion of the reinforcing member 30 located inside the protective cavity 401 can be insulated and protected by the first insulating member 40, while the other portion of the reinforcing member 30 located outside the protective cavity 401 can be simultaneously insulated and protected by the insulating layer 36. Alternatively, the insulating layer 36 can be applied simultaneously to both the reinforcing member 30 located outside the protective cavity 401 and the reinforcing member 30 housed within the protective cavity 401 to further enhance the insulation and protection effect of the reinforcing member 30.

[0178] Exemplarily, in some embodiments, the reinforcing member 30 includes a clearance portion 31, extension portions 33 extending along a first direction X and disposed on opposite sides of the clearance portion 31, and two connecting portions 32 fixedly connected to the extension portions 33 on opposite sides; wherein the clearance portion 31 and the extension portions 33 can be accommodated within the protective cavity 401 of the first insulating member 40, and a portion of the connecting portion 32 extends into the protective cavity 401 and is connected to the extension portion 33; the insulating layer 36 includes an insulating sleeve, which is sleeved on the surface of the connecting portion 32, and extends into the protective cavity 401 and is simultaneously sleeved at the connection between the extension portion 33 and the connecting portion 32. It should be understood that the portion of the connecting portion 32 where the second reinforcing portion 35 is provided should be exposed outside the insulating sleeve to facilitate the connection operation between the connecting portion 32 and the first beam 14.

[0179] Please refer to Figures 6 to 8 In some embodiments, the battery device 100 further includes a pressure strip structure 60. Along the second direction Z, the pressure strip structure 60 is provided on the side of the reinforcing member 30 located outside the protective cavity 401 facing the battery cell 20, and the pressure strip structure 60 abuts against the surface of the plurality of battery cells 20.

[0180] Understandably, the pressure strip structure 60 is used to be set on the side of the reinforcing member 30 along the second direction Z and facing the battery cell 20 and abutting against the surface of multiple battery cells 20. In this way, when the battery cell 20 expands, the force of the battery cell 20 on the reinforcing member 30 can be transmitted to the reinforcing member 30 more evenly under the transmission of the pressure strip structure 60. This can effectively reduce the probability of the reinforcing member breaking due to force concentration.

[0181] For example, in some embodiments, multiple battery cells 20 are stacked and arranged along a first direction X to form a battery cell row; the reinforcing member 30 includes a clearance portion 31, extension portions 33 extending along the first direction X and disposed on opposite sides of the clearance portion 31, and two connecting portions 32 fixedly connected to the extension portions 33 on opposite sides; wherein, the clearance portion 31 and the extension portions 33 can be accommodated in the protective cavity 401 of the first insulating member 40, and a portion of the connecting portion 32 extends into the protective cavity 401 and is connected to the extension portion 33; along the second direction Z, a pressure strip structure 60 is disposed on the portion of the connecting portion 32 located outside the protective cavity 401 and facing the side of the battery cell row, and the pressure strip structure 60 abuts against the end cap 21 of each battery cell 20 in the battery cell row.

[0182] Optionally, the pressure strip structure 60 may be, but is not limited to, a plate structure, a block structure, a sheet structure, etc., and the material of the pressure strip structure 60 may include, but is not limited to, injection molded material, vacuum formed material, pultruded composite material, etc.; the pressure strip structure 60 may be fixed to the reinforcing member 30 by means of bonding, snap-fitting, etc.

[0183] For example, in some embodiments, the pressure strip structure 60 may be a pultruded composite pressure strip, and a snap-fit ​​groove is formed on the pressure strip structure 60, and part of the reinforcing member 30 can be snapped into the snap-fit ​​groove of the pressure strip structure 60 and fixed; at the same time, the pressure strip structure 60 also abuts against the end cap 21 of the plurality of battery cells 20.

[0184] Please refer to Figures 6 to 8 In some embodiments, a second adhesive layer 37 is provided between the pressure strip structure 60 and the insulation layer 36, and the pressure strip structure 60 is fixedly connected to the insulation layer 36 through the second adhesive layer 37.

[0185] Optionally, the second adhesive layer 37 can be, but is not limited to, adhesive structures such as backing adhesive or structural adhesive. The second adhesive layer 37 can be pre-coated on the surface of the pressure strip structure 60, or the second adhesive layer 37 can also be pre-coated on the insulating layer 36 on the surface of the reinforcing member 30.

[0186] With this configuration, the second adhesive layer 37 is used to bond and fix the pressure strip structure 60 to the insulating layer 36 on the surface of the reinforcing member 30, which can effectively improve the assembly stability of the pressure strip structure 60.

[0187] Please refer to Figure 2 , Figures 6 to 8 In some embodiments, the housing 10 further includes a second housing 12, which is connected to the first housing 11 and covers the receiving cavity 101; the battery device 100 further includes a partition structure 70, which is disposed between the reinforcing member 30 and the second housing 12 along the second direction Z.

[0188] Understandably, the second housing 12 refers to a structure used to fasten with the first housing 11 to form a closed space inside the housing 10. Optionally, the second housing 12 can be a top cover structure.

[0189] In some embodiments, the second housing 12 may be provided with mounting holes, and the mounting holes may be aligned with the mounting structure 13; in this way, the mounting structure 13 can be mounted and connected to the external structure through the mounting holes to achieve assembly.

[0190] The partition structure 70 refers to the structural component used to separate the reinforcing member 30 from the second housing 12.

[0191] Optionally, the partition structure 70 may include, but is not limited to, structural components such as partition plates, partition strips, and partition blocks. The material of the partition structure 70 may be, but is not limited to, foam, injection molded materials, rubber, silicone, etc.

[0192] The partition structure 70 can be connected to the insulating layer 36 of the reinforcing member 30 by means of adhesive bonding, snap-fitting, or other methods. For example, in some embodiments, along the second direction Z, the insulating layer 36 of the reinforcing member 30 facing the second housing 12 is provided with a receiving groove, and the partition structure 70 can be a foam partition strip, which can be inserted into the receiving groove.

[0193] With this configuration, by providing a partition structure 70 between the reinforcing member 30 and the second housing 12 along the second direction Z, the partition structure 70 can support the second housing 12 and the reinforcing member 30, thereby reducing the probability of the second housing 12 and the insulating layer 36 on the surface of the reinforcing member 30 coming into contact, and thus effectively reducing the probability of the insulating layer 36 on the surface of the reinforcing member 30 being worn and causing insulation failure.

[0194] The battery device 100 provided in this application will now be further described according to specific embodiments.

[0195] Please refer to Figures 4 to 9In this embodiment, the battery device 100 includes a housing 10, a reinforcing member 30, and a plurality of battery cells 20. The housing 10 includes a first housing 11, a second housing 12, a mounting structure 13, and a first beam 14; along the first direction X, two first beams 14 are spaced apart within the first housing 11, and a receiving cavity 101 is formed between the two first beams 14, and the plurality of battery cells 20 are stacked and arranged in the receiving cavity 101 along the first direction X.

[0196] The reinforcing member 30 includes a clearance portion 31, extension portions 33 extending along a first direction X and disposed on opposite sides of the clearance portion 31, and two connecting portions 32 welded and fixed to the extension portions 33 on opposite sides. The clearance portion 31 has a ring-shaped structure, and a clearance hole 301 is formed on the inner side of the clearance portion 31.

[0197] The reinforcing member 30 also includes a first reinforcing portion 34 and a second reinforcing portion 35. Along the second direction Z, the first reinforcing portion 34 is stacked on one side surface of the clearance portion 31 and welded to the clearance portion 31. Along the second direction Z, the first reinforcing portion 34 covers the same side surface of the clearance portion 31 and the two extension portions 33 located on opposite sides of the clearance portion 31.

[0198] Along the second direction Z, the connecting part 32 is provided with a connecting hole 321, and the second reinforcing part 35 is provided with a first through hole 351; the second reinforcing part 35 is welded and fixed to the side surface of the connecting part 32 facing the first beam 14, and the connecting hole 321 is connected to the first through hole 351.

[0199] The battery device 100 further includes a first insulating member 40 and a second insulating member 50. Along the second direction Z, the first insulating member 40 is disposed on the side of the reinforcing member 30 facing the battery cell 20. A protective cavity 401 is provided on the first insulating member 40, and a second through hole 402 is provided through the first insulating member 40 along the second direction Z, communicating with the protective cavity 401. The clearance portion 31 and the extension portion 33 of the reinforcing member 30 are accommodated within the protective cavity 401, and the clearance portion 31 and the extension portion 33 can be bonded and fixed to the inner wall of the protective cavity 401 by a first adhesive layer 40a. The second through hole 402 communicates with the clearance hole 301. A portion of the connecting portion 32 of the reinforcing member 30 is inserted into the protective cavity 401 along the first direction X and overlaps with and is welded to the extension portion 33.

[0200] The second insulating member 50 has a third through hole 501; along the second direction Z, the second insulating member 50 covers the side of the reinforcing member 30 away from the battery cell 20, the second insulating member 50 seals the protective cavity 401, and the third through hole 501 is connected to the clearance hole 301.

[0201] Meanwhile, part of the surface of the reinforcing member 30 is also covered with an insulating layer 36; wherein, the insulating layer 36 is covered on the surface of the connecting part 32, and the insulating layer 36 extends into the protective cavity 401 and is simultaneously covered at the connection between the extension part 33 and the connecting part 32.

[0202] During assembly, the reinforcing member 30 is placed on the side of the battery cell 20 along the second direction Z and away from the first housing 11, so that the mounting structure 13 passes through the second through hole 402, the clearance hole 301 and the third through hole 501 to achieve clearance; at the same time, the locking attachment is sequentially passed through the connecting hole 321 and the first through hole 351 and locked to the corresponding first beam 14, so that the second reinforcing part 35 welded on the reinforcing member 30 is located between the connecting part 32 and the first beam 14.

[0203] Please refer to Figures 1 to 3 This application embodiment also provides an electrical device, which includes a battery device 100 as described above, and the battery device 100 is used to provide electrical energy.

[0204] The electrical device provided in this application embodiment is, for example, the vehicle 1000 described above. The electrical device includes the battery device 100 described above. Based on the fact that the reinforcing member 30 of the battery device 100 can avoid the mounting structure 13 for assembly, the battery device 100 is less affected by the mounting and assembly operation, which facilitates the assembly operation of the electrical device.

[0205] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized by, include: Multiple battery cells; The housing includes a first housing, a mounting structure, and a first beam. Along a first direction, a plurality of first beams are sequentially spaced within the first housing. At least one set of two adjacent first beams are spaced apart to form a receiving cavity. A plurality of battery cells are stacked in the receiving cavity along the first direction. The mounting structure is disposed in the receiving cavity and connected to the first housing. as well as A reinforcing member, the two opposite ends of which are connected to the corresponding first beam; along the second direction, a clearance hole is provided through the reinforcing member, and the mounting structure is configured to pass through the clearance hole along the second direction; wherein, the first direction is perpendicular to the second direction.

2. The battery device according to claim 1, characterized in that: The reinforcing member includes a clearance portion and a connecting portion. The clearance portion is annular and forms the clearance hole around the clearance portion. Along the first direction, the connecting portion is provided at both opposite ends of the clearance portion, and the connecting portion is connected to the corresponding first beam.

3. The battery device according to claim 2, characterized in that: Along the first direction, at least one side of the avoidance portion extends outward to form an extension portion, which is connected to the connecting portion.

4. The battery device according to claim 3, characterized in that: The reinforcing member further includes a first reinforcing portion, which is stacked on at least one side surface of the clearance portion and connected to the clearance portion along the second direction.

5. The battery device according to claim 4, characterized in that: Along the second direction, the first reinforcing portion covers the corresponding side surface of the avoidance portion.

6. The battery device according to claim 5, characterized in that: Along the second direction, the first reinforcing portion also covers at least a portion of the surface of the extension and is connected to the extension.

7. The battery device according to any one of claims 2 to 6, characterized in that: The reinforcing member further includes a second reinforcing portion, which is disposed on at least one side surface of the connecting portion along the second direction, and the connecting portion, the second reinforcing portion, and the first beam are connected at the overlapping point.

8. The battery device according to claim 7, characterized in that: Along the second direction, the connecting part is provided with a connecting hole, and the second reinforcing part is provided with a first through hole, the connecting hole communicating with the first through hole; the battery device also includes a locking accessory, the locking accessory passing through the connecting hole and the first through hole and being locked onto the first beam.

9. The battery device according to any one of claims 2 to 6, characterized in that: The clearance portion and the connecting portion are an integral structure; or, the clearance portion and the connecting portion are separate but fixedly connected.

10. The battery device according to any one of claims 1 to 6, characterized in that: The battery device further includes a first insulating member disposed on the side of the reinforcing member facing the battery cell; the first insulating member is provided with a protective cavity, and along the second direction, the first insulating member is provided with a second through hole, the second through hole communicating with the protective cavity; at least a portion of the reinforcing member is accommodated within the protective cavity, and the second through hole communicating with the clearance hole.

11. The battery device according to claim 10, characterized in that: A first adhesive layer is provided inside the protective cavity, and the reinforcing member is fixedly connected to the inner wall of the protective cavity through the first adhesive layer.

12. The battery device according to claim 10, characterized in that: The battery device further includes a second insulating member, on which a third through hole is formed; along the second direction, the second insulating member covers the side of the reinforcing member opposite to the battery cell, the second insulating member seals the protective cavity, and the third through hole communicates with the clearance hole.

13. The battery device according to claim 12, characterized in that: At least a portion of the surface of the reinforcing member is covered with an insulating layer.

14. The battery device according to claim 13, characterized in that: The battery device further includes a pressure strip structure. Along the second direction, the pressure strip structure is provided on the side of the reinforcing member located outside the protective cavity facing the battery cell. The pressure strip structure abuts against the surface of the plurality of battery cells.

15. The battery device according to claim 14, characterized in that: A second adhesive layer is provided between the pressure strip structure and the insulation layer, and the pressure strip structure is fixedly connected to the insulation layer through the second adhesive layer.

16. The battery device according to claim 13, characterized in that: The housing also includes a second housing, which is connected to the first housing and covers the receiving cavity; The battery device further includes a partition structure disposed between the reinforcing member and the second housing along the second direction.

17. An electrical device, characterized in that: The electrical device includes a battery device as described in any one of claims 1 to 16, the battery device being used to provide electrical energy.

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