Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device.The battery device comprises a box body and a battery monomer assembly, the box body comprises a first part and a second part, and the first part and the second part are buckled in the first direction to form a containing space; the battery monomer assembly comprises at least one battery monomer, and the battery monomer assembly is accommodated in the accommodating space; the second part comprises a bottom plate, a frame, a bracket and a cross beam; the frame is arranged on the periphery of the bottom plate, the cross beam is connected with at least one of the bottom plate and the frame and located in the containing space, the cross beam abuts against the battery monomer assembly, part of the support is located on the side, deviating from the containing space in the second direction, of the frame, and the support penetrates through the frame and is connected with the cross beam. According to the scheme, when the support is subjected to external force, due to the fact that the support is connected with the cross beam, part of the acting force can be transmitted to the cross beam, impact or load borne by the frame is reduced, the frame is prevented from being damaged, and the structural strength of the second part is effectively improved.

Description

Technical Field

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

[0002] A battery typically consists of a lower casing, a battery module housed within the lower casing, and a top cover with a sealing cap on the lower casing. To facilitate connection between the lower casing and other components, a bracket is usually attached to the lower casing.

[0003] In the relevant technology, when the support is subjected to external pressure, the lower housing is easily damaged during use. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device that can solve the problem that the lower housing is easily damaged when the bracket is subjected to external pressure.

[0005] To address the aforementioned technical problems, in a first aspect, this application proposes a battery device, comprising:

[0006] The box body includes a first part and a second part, which are fastened together along a first direction to form an accommodating space;

[0007] A battery cell assembly, comprising at least one battery cell, wherein the battery cell assembly is housed within the receiving space;

[0008] The second part includes a base plate, a frame, a bracket, and a crossbeam; the frame is disposed around the periphery of the base plate, the crossbeam connects at least one of the base plate and the frame and is located in the receiving space, the crossbeam abuts against the battery cell assembly, a portion of the bracket is located on the side of the frame away from the receiving space along a second direction, and the bracket passes through the frame and is connected to the crossbeam; the first direction intersects the second direction.

[0009] In the technical solution of this application embodiment, when the support is subjected to external force, since the support is connected to the crossbeam, part of the force will be transmitted to the crossbeam, thereby reducing the impact or load on the frame, preventing the frame from being damaged, and effectively improving the structural strength of the second part.

[0010] In some embodiments, the frame includes two first borders and two second borders, the two first borders are arranged opposite each other along the second direction, the two second borders are arranged opposite each other along the third direction, the first borders and the second borders are connected end to end, and the first direction, the second direction and the third direction intersect each other;

[0011] The first frame has a through hole, and part of the bracket is located on the side of the first frame away from the receiving space. The other end of the bracket passes through the through hole and connects to the crossbeam. This facilitates the connection of the bracket through the first frame and to the crossbeam.

[0012] In some embodiments, the bracket is sealed to the edge of the through hole.

[0013] This prevents external debris from entering the second part from between the bracket and the edge of the through hole when the bracket and the through hole are sealed.

[0014] In some embodiments, the end of the crossbeam engages with the side of the second frame facing the receiving space. This facilitates securing the crossbeam to the second frame.

[0015] In some embodiments, the second frame is provided with a recess and a protrusion on the side facing the receiving space;

[0016] An overlapping portion is provided on the end, which cooperates with the protrusion, and the end abuts against the side of the concave portion facing the receiving space.

[0017] In this way, by cooperating with the overlapping part and the protrusion, the end abuts against the side of the second frame facing the receiving space, thereby fixing the crossbeam to the second frame.

[0018] In some embodiments, the crossbeam has a cavity, and reinforcing ribs are provided inside the cavity. This increases the strength of the crossbeam, thereby improving its resistance to the forces exerted on the battery cells after expansion and preventing deformation of the crossbeam.

[0019] In some embodiments, the second frame includes at least two interconnected sidewalls, wherein a binding hole is provided on the sidewall facing the receiving space, the binding hole being configured to install a strap to secure the wire harness within the receiving space. This facilitates securing the strap to bind the wire harness within the receiving space.

[0020] In some embodiments, a side beam is provided on the side of the second frame opposite to the receiving space, and a first connecting hole is provided on the side beam, which is configured to connect other components. This facilitates the connection of the second part to the vehicle.

[0021] In some embodiments, the bracket is provided with a second connection hole configured to connect other components. In this way, when the battery cells within the second section expand and act on the crossbeam, the expansion force is transmitted through the crossbeam and the bracket to other external components, thereby improving the overall enclosure's resistance to expansion forces.

[0022] In some embodiments, the first frame includes a first wall, a second wall, and a third wall. The first wall and the third wall are connected to opposite ends of the second wall along the first direction, and the first wall and the third wall extend perpendicular to the first direction. The first wall connects to the first portion, and the third wall connects to the base plate. The first wall, the second wall, and the third wall are an integral structure. This simplifies the overall structure of the first frame and reduces costs.

[0023] In some embodiments, the first frame further includes a fourth wall, which is connected to the first wall and located at one end of the first wall facing the second frame along the second direction. The fourth wall extends along the first direction and is connected to the second frame. This connection between the fourth wall and the second frame effectively improves the connection strength between the first and second frames.

[0024] In some embodiments, the bracket is a profile with a cavity, and a support plate is disposed inside the cavity. This increases the strength of the profile, thereby increasing the strength of the bracket and preventing damage to the bracket when subjected to impact or load.

[0025] Secondly, this application proposes an electrical device, including a battery device as described in any one of the embodiments of this application.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of an electrical device provided in some embodiments of this application;

[0029] Figure 2 This application provides schematic diagrams of the battery structure for some embodiments.

[0030] Figure 3 This is a schematic diagram of the structure of a battery cell provided in some embodiments of this application;

[0031] Figure 4This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0032] Figure 5 A first border diagram provided for some embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the connection structure between the bracket and the crossbeam provided in some embodiments of this application;

[0034] Figure 7 for Figure 4 Enlarged diagram of point A in the middle.

[0035] The reference numerals in the detailed embodiments are as follows:

[0036] 1000, vehicles;

[0037] 100. Battery; 200. Controller; 300. Motor;

[0038] 110. Housing; 111. First part; 112. Second part; 120. Battery cell; 121. Housing; 122. End cap; 123. Electrode assembly;

[0039] 1121, Base plate; 1122, Frame; 11221, First side frame; 112211, Through hole; 112212, First wall; 112213, Second wall; 112214, Third wall; 112215, Fourth wall; 11222, Second side frame; 112221, Binding hole; 112222, Side beam; 112223, First connecting hole; 112224, Recessed part; 112225, Protruding part; 1123, Bracket; 11231, Support plate; 11232, Second connecting hole; 1124, Crossbeam; 11241, End; 11242, Overlap; 11243, Reinforcing rib. Detailed Implementation

[0040] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0042] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0043] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0045] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0046] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0048] 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 extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0049] In related technologies, a battery generally includes a lower casing, a battery module housed within the lower casing, and a top cover with a sealing cap on the lower casing. To facilitate connection between the lower casing and other components, a bracket is typically attached to the lower casing.

[0050] In the related technology, when the lower housing is in use, the support will transfer the compressive force to the surface of the lower housing when it is subjected to external pressure. The surface of the lower housing is easily damaged when subjected to pressure.

[0051] Based on the above considerations, in order to solve the problem that the lower housing is easily damaged when the bracket is subjected to external pressure, a battery device is designed. The battery device includes a housing and a battery cell assembly. The housing includes a first part and a second part, wherein the first part and the second part are fastened together along a first direction to form a receiving space. The battery cell assembly includes at least one battery cell and is housed in the receiving space. The second part includes a base plate, a frame, a bracket, and a crossbeam. The frame is disposed around the periphery of the base plate, and the crossbeam connects at least one of the base plate and the frame and is located in the receiving space. The crossbeam abuts against the battery cell assembly. Part of the bracket is located on the side of the frame away from the receiving space along a second direction, and the bracket passes through the frame and is connected to the crossbeam. The first direction and the second direction intersect.

[0052] In the technical solution of this application embodiment, when the support is subjected to external force, since the support is connected to the crossbeam, part of the force will be transmitted to the crossbeam, thereby reducing the impact or load on the frame, preventing the frame from being damaged, and effectively improving the structural strength of the second part.

[0053] In this application, "battery" refers to a single physical module comprising one or more individual battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery pack, etc. Batteries can serve as a power source or power system for electrical devices, which helps improve the overall performance of the battery and facilitates its widespread adoption.

[0054] The aforementioned electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0055] 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.

[0056] Please refer to Figure 1 , Figure 1 This 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 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 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 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0057] In some embodiments of this application, the battery 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.

[0058] Please refer to Figure 2 , Figure 2This is an exploded view of a battery 100 provided in some embodiments of this application. The battery 100 includes a housing 110 and a battery cell 120, with the battery cell 120 housed within the housing 110. The housing 110 provides a accommodating space for the battery cell 120, and the housing 110 can adopt various structures. In some embodiments, the housing 110 may include a first portion 111 and a second portion 112, which overlap each other, and together define a accommodating space for accommodating the battery cell 120. The second portion 112 may be a hollow structure with one open end, and the first portion 111 may be a plate-like structure, with the first portion 111 covering the open side of the second portion 112 so that the first portion 111 and the second portion 112 together define the accommodating space; alternatively, the first portion 111 and the second portion 112 may both be hollow structures with one open side, with the open side of the first portion 111 covering the open side of the second portion 112. Of course, the box 110 formed by the first part 111 and the second part 112 can be of various shapes, such as cylinder, cuboid, etc.

[0059] In battery 100, there can be multiple battery cells 120. These multiple battery cells 120 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 120 are connected in both series and parallel. Multiple battery cells 120 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 120 is housed within housing 110. Alternatively, battery 100 can also consist of multiple battery cells 120 first connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within housing 110. Battery 100 may also include other structures; for example, battery 100 may also include a busbar component for electrical connection between multiple battery cells 120.

[0060] Each battery cell 120 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 120 can be cylindrical, flat, cuboid, or other shapes.

[0061] like Figure 3 As shown, the battery cell 120 may include a housing, an electrode assembly 123, and electrode terminals. The housing includes a casing 121 and an end cap 122. The casing 121 has an opening, and the end cap 122 closes the opening to isolate the internal environment of the battery cell 120 from the external environment.

[0062] The housing 121 is an assembly used to cooperate with the end cap 122 to form the internal environment of the battery cell 120, wherein the formed internal environment can accommodate the electrode assembly 123, electrolyte, and other components. The housing 121 and the end cap 122 can be independent components. The housing 121 can have various shapes and sizes. Specifically, the shape of the housing 121 can be determined according to the specific shape and size of the electrode assembly 123. The housing 121 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0063] End cap 122 refers to a component that covers the opening of housing 121 to isolate the internal environment of battery cell 120 from the external environment. The shape of end cap 122 can be adapted to the shape of housing 121 to fit it. Optionally, end cap 122 can be made of a material with certain hardness and strength, such as aluminum alloy. This makes end cap 122 less prone to deformation under pressure and impact, allowing battery cell 120 to have higher structural strength and improved reliability. Functional components such as electrode terminals can be provided on end cap 122. Electrode terminals can be used for electrical connection with electrode assembly 123 to output or input electrical energy to battery cell 120. The material of end cap 122 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating structure can also be provided on the inner side of end cap 122. The insulating structure can be used to isolate the electrical connection components inside housing 121 from end cap 122 to reduce the risk of short circuit. For example, the insulating structure can be made of plastic, rubber, etc.

[0064] Electrode assembly 123 is the component in the battery cell 120 where electrochemical reactions occur. The housing 121 may contain one or more electrode assemblies 123. The electrode assembly 123 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 to separate them and prevent internal short circuits. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 123, while the portions without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or at opposite ends. During the charging and discharging process of the battery 100, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop. Furthermore, the electrode assembly 123 can be a wound structure or a stacked structure.

[0065] In some embodiments, the battery cell 120 may also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold.

[0066] According to some embodiments of this application, Figure 4 This is a schematic diagram of the battery device in this application. Figure 5 This is a schematic diagram of the first border in this application. Figure 6 This is a schematic diagram of the connection structure between the bracket and the crossbeam in this application. Figure 4 and combined Figure 5 , Figure 6 As shown, this application provides a battery device, which includes a housing 110 and a battery cell assembly. The housing 110 includes a first part 111 and a second part 112, which are fastened together along a first direction to form a receiving space. The battery cell assembly includes at least one battery cell and is housed within the receiving space. The second part 112 includes a base plate 1121, a frame 1122, a bracket 1123, and a crossbeam 1124. The frame 1122 is disposed around the periphery of the base plate 1121. The crossbeam 1124 connects at least one of the base plate 1121 and the frame 1122 and is located within the receiving space. The crossbeam 1124 abuts against the battery cell assembly. A portion of the bracket 1123 is located on the side of the frame 1122 facing away from the receiving space along a second direction, and the bracket 1123 passes through the frame 1122 and is connected to the crossbeam 1124. The first direction intersects with the second direction.

[0067] The structures of the first part 111, the second part 112, and the battery cell in this embodiment can be referred to the above description, and will not be repeated here.

[0068] The first and second directions in this embodiment can be referenced. Figure 4 The first and second directions are marked in the text.

[0069] In this embodiment, a second connection hole 11232 is provided on the bracket 1123 to connect other components.

[0070] In this embodiment, the bracket 1123 can be an extruded profile, or the bracket 1123 can be a die-cast or forged bracket. The bracket 1123 and the crossbeam 1124 can be connected by bolts, adhesive, riveting, etc. The specific connection can be determined according to the actual situation, and this embodiment does not limit the connection.

[0071] In this embodiment, the crossbeam 1124 may be connected only to the base plate 1121, or the crossbeam 1124 may be connected only to the frame 1122, or the crossbeam 1124 may be connected to both the base plate 1121 and the frame 1122. For ease of explanation, the following description will take the connection between the crossbeam 1124 and the base plate 1121 as an example.

[0072] In this embodiment, the bracket 1123 can be connected not only to the crossbeam 1124, but also to other structures within the accommodating space. The specific connection can be determined according to the actual situation, and this embodiment does not limit this connection.

[0073] In this embodiment, the frame 1122 can be welded to the periphery of the base plate 1121. The crossbeam 1124 can be connected to the side of the base plate 1121 facing the receiving space by bolts or snap-fit. The bracket 1123 is located on the side of the frame 1122 away from the receiving space, and the other part of the bracket 1123 passes through the frame 1122 and is connected to the crossbeam 1124. The bracket 1123, after passing through the frame 1122, can be welded to the frame 1122, and the other part of the bracket 1123 can be connected to the crossbeam 1124 by bolts or welding. It is understood that other connection structures can be used between the base plate 1121, frame 1122, bracket 1123, and crossbeam 1124, which are not limited here.

[0074] In the technical solution of this application embodiment, when the bracket 1123 is subjected to external force, since the bracket 1123 is connected to the crossbeam 1124, part of the force is transferred to the crossbeam 1124, thereby reducing the force exerted by the bracket 1123 on the frame 1122, preventing damage to the frame 1122, and effectively improving the structural strength of the second part. Simultaneously, when the battery cells in the second part expand and act on the crossbeam 1124, part of the expansion force on the crossbeam 1124 can be transferred through the bracket 1123 to the corresponding mounting point, thereby improving the overall box's resistance to expansion. In this way, the bracket 1123 integrates the functions of external mounting and support beam, reducing the number of components used in the second part and effectively reducing costs.

[0075] According to some embodiments of this application, such as Figure 4 and combined Figure 5 , Figure 6 As shown, the frame 1122 includes two first side frames 11221 and two second side frames 11222. The two first side frames 11221 are arranged opposite each other along a second direction, and the two second side frames 11222 are arranged opposite each other along a third direction. The first side frames 11221 and the second side frames 11222 are connected end to end, and the first direction, the second direction and the third direction intersect each other. The first side frame 11221 is provided with a through hole 112211. Part of the bracket 1123 is located on the side of the first side frame 11221 away from the receiving space, and the other end of the bracket 1123 passes through the through hole 112211 and is connected to the crossbeam 1124.

[0076] The first direction, second direction, and third direction in this embodiment can be referred to... Figure 4 As shown, it will not be elaborated further here.

[0077] The frame 1122 in this embodiment includes two first borders 11221 and two second borders 11222. The two first borders 11221 are arranged opposite each other along a second direction, and the two second borders 11222 are arranged opposite each other along a third direction. The first borders 11221 and the second borders 11222 are welded end to end to form the frame 1122.

[0078] refer to Figure 4 As shown, in this embodiment, one or two through holes 112211 can be provided on the first frame 11221. The specific hole can be determined according to the actual situation, and this embodiment does not limit it.

[0079] In this embodiment, the number of through holes 112211 is equal to the number of brackets 1123.

[0080] During assembly, the bracket 1123 is passed through the corresponding through hole 112211 and welded to the crossbeam 1124. At this time, the bracket 1123 and the edge of the corresponding through hole 112211 are welded together. Part of the bracket 1123 is located on the side of the first frame 11221 away from the receiving space, and the other end of the bracket 1123 passes through the through hole 112211 and is connected to the crossbeam 1124. In this way, by setting the through hole 112211, the bracket 1123 and the crossbeam 1124 can be easily connected together.

[0081] According to some embodiments of this application, when the bracket 1123 is inserted into the through hole 112211, the bracket 1123 is sealed to the edge of the through hole 112211.

[0082] In this embodiment, a sealing ring can be provided at the edge of the through hole 112211, and the bracket 1123 and the edge of the through hole 112211 are sealed by the sealing ring, or, refer to Figure 6 As shown, when the bracket 1123 passes through the corresponding through hole 112211 and is connected to the crossbeam 1124, the support plate 11231 inside the bracket 1123 and the first frame 11221 are located on the same plane. At this time, the support plate 11231 can close the corresponding through hole 112211, thereby making the bracket 1123 and the edge of the through hole 112211 form a sealed structure. Of course, it can be understood that the edge of the bracket 1123 and the through hole 112211 can also be sealed with sealant. The specific method can be determined according to the actual situation, and this embodiment does not limit this.

[0083] By sealing the edge of the bracket 1123 with the through hole 112211, external debris can be prevented from entering the interior of the second part 112 from between the bracket 1123 and the edge of the through hole 112211.

[0084] According to some embodiments of this application, the end 11241 of the crossbeam 1124 is engaged with the side of the second frame 11222 facing the receiving space.

[0085] In this embodiment, a locking block can be provided at the end 11241 of the crossbeam 1124, and a slot can be provided on the side of the second frame 11222 facing the receiving space. The crossbeam 1124 and the second frame 11222 can be conveniently connected together through the cooperation structure of the locking block and the slot.

[0086] According to some embodiments of this application, such as Figure 7 As shown, the second frame 11222 has a recessed portion 112224 and a protruding portion 112225 on the side facing the receiving space; an overlapping portion 11242 is provided on the end 11241, where the overlapping portion 11242 and the protruding portion 112225 cooperate, and the end 11241 abuts against the side of the recessed portion 112224 facing the receiving space.

[0087] refer to Figure 7 As shown, the recessed portion 112224 on the second frame 11222 is located above the protruding portion 112225. The overlapping portion 11242 and the end portion 11241 are integrally formed. A corresponding slot is formed on the overlapping portion 11242. The slot can be engaged with the protruding portion 112225. At this time, the end portion 11241 will be lowered to the side of the recessed portion 112224 facing the receiving space, so that the crossbeam 1124 can be fixed on the second frame 11222.

[0088] According to some embodiments of this application, such as Figure 6 As shown, the crossbeam 1124 has a cavity, and a reinforcing rib 11243 is provided inside the cavity.

[0089] In this embodiment, multiple reinforcing ribs 11243 can be welded into the internal cavity of the crossbeam 1124. The specific number can be determined according to the actual situation, and this embodiment does not limit this.

[0090] This increases the strength of the crossbeam 1124, thereby improving its resistance to the forces exerted on the battery cells after expansion and preventing deformation of the crossbeam 1124.

[0091] According to some embodiments of this application, such as Figure 7 As shown, the second frame 11222 includes at least two interconnected sidewalls, wherein a binding hole 112221 is provided on the sidewall facing the receiving space, the binding hole 112221 being configured to install a strap to bind the wire harness within the receiving space.

[0092] In this embodiment, one or two equal binding holes 112221 are provided on the side wall facing the accommodating space, which is not limited here.

[0093] By providing binding holes 112221 on the side wall facing the receiving space, it is convenient to fix the strap into the corresponding binding holes 112221 so as to bind the wire harness in the receiving space.

[0094] According to some embodiments of this application, such as Figure 4 As shown, a side beam 112222 is provided on the side of the second frame 11222 that is away from the receiving space. The side beam 112222 has a first connecting hole 112223, which is configured to connect other components.

[0095] In this embodiment, the side beam 112222 can be welded to the side of the second frame 11222 away from the receiving space, or the side beam 112222 and the second frame 11222 can be integrally formed. The specific method can be determined according to the actual situation, and this embodiment does not limit it.

[0096] In this embodiment, a first connecting hole 112223 is provided on the side beam 112222. In this way, the side beam 112222 can be quickly connected to other components by passing a bolt or pin through the first connecting hole 112223.

[0097] According to some embodiments of this application, such as Figure 4 As shown, the bracket 1123 is provided with a second connection hole 11232, which is configured to connect other components. In this way, when the battery cell 120 in the second part 112 expands and acts on the crossbeam 1124, the expansion force is transmitted to other external components through the crossbeam 1124 and the bracket 1123, thereby improving the overall box's resistance to expansion force.

[0098] According to some embodiments of this application, such as Figure 5 As shown, the first frame 11221 includes a first wall 112212, a second wall 112213, and a third wall 112214. The first wall 112212 and the third wall 112214 are connected to the opposite ends of the second wall 112213 along the first direction, and the first wall 112212 and the third wall 112214 extend perpendicular to the first direction. The first wall 112212 is connected to the first part 111, and the third wall 112214 is connected to the base plate 1121. The first wall 112212, the second wall 112213, and the third wall 112214 are an integral structure.

[0099] The first direction in this embodiment can be referenced. Figure 5 As shown, it will not be elaborated further here.

[0100] By setting the structure of the first border 11221 as described above, the overall structure of the first border 11221 can be simplified and the cost reduced.

[0101] According to some embodiments of this application, such as Figure 5 As shown, the first frame 11221 also includes a fourth wall 112215, which is connected to the first wall 112212 and is located at one end of the first wall 112212 facing the second frame 11222 along the second direction. The fourth wall 112215 extends along the first direction and is connected to the second frame 11222.

[0102] The first direction and the second direction in this embodiment can be referenced. Figure 5 As shown, it will not be elaborated further here.

[0103] This embodiment effectively improves the connection strength between the first frame 11221 and the second frame 11222 by connecting the fourth wall 112215 with the second frame 11222.

[0104] According to some embodiments of this application, such as Figure 6 As shown, the bracket 1123 is a profile with a cavity, and a support plate 11231 is disposed inside the cavity. Of course, it can be understood that the bracket 1123 can also be a die-cast or forged bracket, which is not limited here.

[0105] In this embodiment, by setting a support plate 11231 in the internal cavity of the profile, the strength of the profile can be improved, thereby improving the strength of the bracket 1123 and preventing the bracket 1123 from being damaged when subjected to impact or load.

[0106] This application also provides an electrical device, including a battery device as described in any of the embodiments of this application.

[0107] The specific structure of the battery device in this embodiment refers to the above embodiments. Since the power device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box body includes a first part and a second part, which are fastened together along a first direction to form an accommodating space; A battery cell assembly, comprising at least one battery cell, wherein the battery cell assembly is housed within the receiving space; The second part includes a base plate, a frame, a bracket, and a crossbeam; the frame is disposed around the periphery of the base plate, the crossbeam connects at least one of the base plate and the frame and is located in the receiving space, the crossbeam abuts against the battery cell assembly, a portion of the bracket is located on the side of the frame away from the receiving space along a second direction, and the bracket passes through the frame and is connected to the crossbeam; the first direction intersects the second direction.

2. The battery device according to claim 1, characterized in that, The frame includes two first borders and two second borders. The two first borders are arranged opposite each other along the second direction, and the two second borders are arranged opposite each other along the third direction. The first borders and the second borders are connected end to end, and the first direction, the second direction and the third direction intersect each other. The first frame has a through hole, and part of the bracket is located on the side of the first frame away from the receiving space. The other end of the bracket passes through the through hole and is connected to the crossbeam.

3. The battery device according to claim 2, characterized in that, The bracket is sealed to the edge of the through hole.

4. The battery device according to claim 2, characterized in that, The end of the crossbeam engages with the side of the second frame facing the receiving space.

5. The battery device according to claim 4, characterized in that, The second frame has a recess and a protrusion on the side facing the receiving space; An overlapping portion is provided on the end, which cooperates with the protrusion, and the end abuts against the side of the concave portion facing the receiving space.

6. The battery device according to any one of claims 1 to 5, characterized in that, The crossbeam has a cavity, and the cavity is provided with reinforcing ribs.

7. The battery device according to claim 2, characterized in that, The second frame includes at least two interconnected sidewalls, wherein a binding hole is provided on the sidewall facing the receiving space, the binding hole being configured to install a strap to bind the wire harness within the receiving space.

8. The battery device according to claim 2 or 7, characterized in that, The second frame has a side beam on the side opposite to the receiving space, and the side beam has a first connecting hole configured to connect other components.

9. The battery device according to claim 1, characterized in that, The bracket is provided with a second connection hole, which is configured to connect other components.

10. The battery device according to claim 2, characterized in that, The first frame includes a first wall, a second wall, and a third wall. The first wall and the third wall are connected to opposite ends of the second wall along the first direction, and the first wall and the third wall extend perpendicular to the first direction. The first wall is connected to the first part, and the third wall is connected to the base plate. The first wall, the second wall, and the third wall are an integral structure.

11. The battery device according to claim 10, characterized in that, The first frame also includes a fourth wall, which is connected to the first wall and is located at one end of the first wall facing the second frame along the second direction. The fourth wall extends along the first direction and is connected to the second frame.

12. The battery device according to claim 1, characterized in that, The bracket is a profile with a cavity, and a support plate is provided inside the cavity.

13. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 12.

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