Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, and the battery device comprises a first box body, a second box body, a third box body and a fourth box body, the edge beam is arranged on the side face of the first box body; the side beam is provided with at least one inner cavity, and at least one through hole is formed in the side, in the height direction of the first box body, of the side beam. The connecting piece is fixed to the bottom face of the inner cavity, the position of the connecting piece corresponds to the position of the through hole, the first box body is installed on a frame, and one end of a sleeve on the frame penetrates through the through hole to be fixedly connected with the connecting piece. According to the scheme, due to the fact that the connecting pieces are fixed to the edge beams, when the first box body needs to be connected with the whole vehicle, only the sleeves on the vehicle frame need to be connected with the connecting pieces, deformation of the edge beams caused by the fact that the sleeves are directly welded to the edge beams is avoided, the structural strength of the edge beams is guaranteed, and the strength of the whole first box body is improved.

Description

Technical Field

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

[0002] The battery generally includes a lower box body, a battery module accommodated in the lower box body, and a sealing cover disposed on an upper cover of the lower box body.

[0003] In the process of connecting the lower box body with the whole vehicle in the related art, the side beams on the lower box body will be deformed, which will affect the strength of the side beams. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can solve the problem that the side beams on the lower box body will be deformed and the strength of the side beams will be affected when the box body is connected to the whole vehicle.

[0005] In order to solve the above technical problems, in a first aspect, the present application proposes a battery device, comprising:

[0006] First box:

[0007] A battery cell, wherein the battery cell is disposed in the first box;

[0008] A side beam, the side beam being arranged on a side of the first box body; the side beam being provided with at least one inner cavity, and the side beam being provided with at least one through hole along one side of the first box body in the height direction;

[0009] A connecting piece is fixed to the bottom surface of the inner cavity, and the position of the connecting piece corresponds to the position of the through hole. The first box is installed on the frame, and one end of the sleeve on the frame passes through the through hole and is fixedly connected to the connecting piece.

[0010] In the technical solution of the embodiment of the present application, since the connecting piece is fixed on the side beam, when the first box needs to be connected to the whole vehicle, it is only necessary to connect the sleeve on the frame to the connecting piece, so as to avoid the sleeve being directly welded on the side beam to cause deformation of the side beam, thereby ensuring the structural strength of the side beam and improving the strength of the entire first box. At the same time, since the connecting piece is fixed in the inner cavity, it can be prevented from falling off due to collision.

[0011] In some embodiments, the side of the inner cavity away from the first box body is an open structure, so that the connector can be easily placed in the inner cavity.

[0012] In some embodiments, the edge beam includes a first beam plate and a second beam plate connected;

[0013] The first beam plate is provided with an inner concave portion, the second beam plate is provided with a convex portion, and the convex portion and the inner concave portion are enclosed to form the inner cavity;

[0014] The connecting member is fixed on a side of the inner recessed portion facing the protruding portion, and the through hole is arranged on the protruding portion.

[0015] In some embodiments, a protrusion is provided on the inner recess, and the connecting member is clamped on the protrusion, so that it is convenient to fix the connecting member in the inner recess.

[0016] In some embodiments, the inner recess is provided with a slot, and the connector is fixed in the slot, so that it is convenient to fix the connector in the inner recess.

[0017] In some embodiments, the connector is welded on the side of the inner concave portion facing the protruding portion. Since the connector is only welded on the inner concave portion, the connector does not need to be welded to the protruding portion, so the overall welding amount is small, thereby reducing the impact of welding on the side beam. At the same time, the connector can be firmly fixed in the inner concave portion.

[0018] In some embodiments, one end of the sleeve away from the connecting member is welded to the second beam plate, so as to ensure the stability of the sleeve connection.

[0019] In some embodiments, the sleeve is loosely matched with the through hole, so that the sleeve can pass through the through hole easily.

[0020] In some embodiments, the connector is provided with an internal thread, and the sleeve is provided with an external thread at one end facing the connector, and the external thread cooperates with the internal thread, so that the sleeve is conveniently connected to the connector.

[0021] In a second aspect, the present application proposes an electrical device, comprising a battery device as described in any one of the embodiments of the present application.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only for the purpose of illustrating the embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0024] Figure 1A schematic diagram of the structure of an electric device provided in some embodiments of the present application;

[0025] Figure 2 A schematic diagram of the structure of a battery provided in some embodiments of the present application;

[0026] Figure 3 A schematic diagram of the structure of a battery cell provided in some embodiments of the present application;

[0027] Figure 4 A schematic diagram of the structure of a first box provided in some embodiments of the present application;

[0028] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle;

[0029] Figure 6 for Figure 4 The enlarged schematic diagram at A in the middle;

[0030] Figure 7 for Figure 4 Enlarged schematic diagram at point A in the middle.

[0031] The reference numerals in the specific implementation manner are as follows:

[0032] 1000. Vehicles;

[0033] 100, battery; 200, controller; 300, motor;

[0034] 110, second housing; 111, first part; 112, second part; 120, battery cell; 121, housing; 122, end cover; 123, electrode assembly;

[0035] 10. Side beam; 101. Inner cavity; 11. First beam plate; 113. Inner recess; 1131. Protrusion; 1132. Slot; 12. Second beam plate; 124. Protrusion; 1241. Through hole; 13. Connector; 131. Internal thread; 14. Sleeve; 15. First box body. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0045] In the related art, a battery generally comprises a lower box body, an upper cover and a battery module, wherein the upper cover is connected to the lower box body, and the battery module is arranged in an inner cavity formed by the connection between the upper cover and the lower box body.

[0046] The outer side of the above-mentioned lower box body is generally provided with a side beam. When the lower box body is connected to the whole vehicle, the side beam on the lower box body is mostly welded directly to the sleeve on the whole vehicle frame. At this time, the high temperature generated during welding will cause stress, deformation and warping of the side beam, affecting the strength of the side beam.

[0047] Based on the above considerations, in order to solve the problem that the side beams on the lower box body will be deformed and the strength of the side beams will be affected during the connection of the box body with the whole vehicle, a battery device is designed, which includes: a first box body, a battery cell, a side beam and a connecting piece, wherein the battery cell is arranged in the first box body, and the side beam is arranged on the side of the first box body; the side beam is provided with at least one inner cavity, and at least one through hole is provided on one side of the side beam along the height direction of the first box body, the connecting piece is fixed to the bottom surface of the inner cavity, and the position of the connecting piece corresponds to the position of the through hole, the first box body is installed on the frame, and one end of the sleeve on the frame passes through the through hole and is fixedly connected to the connecting piece.

[0048] During installation, since the connecting parts are fixed on the side beams, when the first box body needs to be connected to the entire vehicle, it is only necessary to connect the sleeve on the frame to the connecting parts, thereby avoiding the sleeve being directly welded to the side beams and causing deformation of the side beams, thereby ensuring the structural strength of the side beams and improving the strength of the entire first box body.

[0049] The battery device in this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery pack, etc. The battery can be used as a power source or power system for an electrical device, which is conducive to improving the overall performance of the battery and facilitating the promotion of the battery.

[0050] The above-mentioned electrical devices may be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0051] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0052] Please refer to Figure 1 The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0053] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0054] Please refer to Figure 2 , Figure 2The schematic diagram of the structure of the battery 100 provided in some embodiments of the present application includes a second box 110 and a battery cell 120, and the battery cell 120 is contained in the second box 110. The second box 110 is used to provide a storage space for the battery cell 120, and the second box 110 can adopt a variety of structures. In some embodiments, the second box 110 may include a first part 111 and a second part 112, the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cell 120. The second part 112 may be a hollow structure with one end open, the first part 111 may be a plate-like structure, and the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 jointly define a storage space; the first part 111 and the second part 112 may also be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the second box body 110 formed by the first part 111 and the second part 112 can be in various shapes, such as a cylinder, a cuboid, etc.

[0055] In the battery 100, there may be multiple battery cells 120, and the multiple battery cells 120 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 120 are both connected in series and in parallel. The multiple battery cells 120 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 120 is accommodated in the second box 110; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 120 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the second box 110. The battery 100 may also include other structures, for example, the battery 100 may also include a converging component for realizing electrical connection between the multiple battery cells 120.

[0056] Each battery cell 120 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 120 may be cylindrical, flat, rectangular, or in other shapes.

[0057] like Figure 3 As shown, the battery cell 120 may include a housing, an electrode assembly 123 and an electrode terminal. The housing includes a shell 121 and an end cap 122. The shell 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.

[0058] The shell 121 is a component used to cooperate with the end cap 122 to form the internal environment of the battery cell 120, wherein the formed internal environment can be used to accommodate the electrode assembly 123, the electrolyte and other components. The shell 121 and the end cap 122 can be independent components. The shell 121 can be of various shapes and sizes. Specifically, the shape of the shell 121 can be determined according to the specific shape and size of the electrode assembly 123. The material of the shell 121 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0059] The end cap 122 refers to a component that covers the opening of the shell 121 to isolate the internal environment of the battery cell 120 from the external environment. Without limitation, the shape of the end cap 122 can be adapted to the shape of the shell 121 to match the shell 121. Optionally, the end cap 122 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 122 is not easily deformed when squeezed and collided, so that the battery cell 120 can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap 122. The electrode terminal can be used to electrically connect to the electrode assembly 123 for outputting or inputting electrical energy of the battery cell 120. The material of the end cap 122 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose any special restrictions on this. In some embodiments, an insulating structure may be provided inside the end cap 122, and the insulating structure may be used to isolate the electrical connection components in the housing 121 from the end cap 122 to reduce the risk of short circuit. For example, the insulating structure may be plastic, rubber, or the like.

[0060] The electrode assembly 123 is a component in the battery cell 120 where an electrochemical reaction occurs. One or more electrode assemblies 123 may be included in the housing 121. The electrode assembly 123 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, and the separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid short circuits between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly 123, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the pole ear. The positive pole ear and the negative pole ear may be located at one end of the main body or at both ends of the main body respectively. During the charge and discharge process of the battery 100, the positive active material and the negative active material react with the electrolyte, and the pole ear connects the electrode terminal to form a current loop. In addition, the electrode assembly 123 may be a winding structure or a laminated structure.

[0061] In some embodiments, the battery cell 120 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold value.

[0062] According to some embodiments of the present application, Figure 4 This is a schematic diagram of the structure of the first box in this application. Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle; Figure 6 for Figure 4 The enlarged schematic diagram at A in the middle; Figure 7 for Figure 4 The enlarged schematic diagram of point A in the middle. Figure 4 , Figure 5 or Figure 6 or Figure 7 As shown, the present application provides a battery device, which includes a first box body 15, a battery cell (not indicated in the figure), a side beam 10 and a connector 13, wherein the battery cell 100 is arranged in the first box body 15; the side beam 10 is arranged on the side of the first box body 15; the side beam 10 is provided with at least one inner cavity 101, and at least one through hole 1241 is provided on one side of the side beam 10 along the height direction of the first box body 15, the connector 13 is fixed to the bottom surface of the inner cavity 101, and the position of the connector 13 corresponds to the position of the through hole 1241, the first box body 15 is installed on the frame, and one end of the sleeve 14 on the frame passes through the through hole 1241 and is fixedly connected to the connector 13.

[0063] In the present embodiment, the upper side of the first box body 15 is an open structure. The first box body 15 may be a cuboid, a cylinder, etc. The specific shape may be determined according to actual conditions, and the present specification does not limit this.

[0064] The side beam 10 in this embodiment can be stamped into one piece with the first box body 15, or the side beam 10 can be connected to the first box body 15 by rivets. The specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0065] The present embodiment does not limit the length and width of the side beam 10, and the specific length and width can be determined according to actual conditions.

[0066] In this embodiment, the connecting member 13 may be a nut, a snap ring, etc., and the specific connection member 13 may be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0067] In this embodiment, one, two, five, etc. inner cavities 101 may be provided on the side beam 10 , and the specific number may be determined according to actual conditions, and this specification does not limit this.

[0068] In this embodiment, the connecting piece 13 can be welded or clamped on the bottom surface of the inner cavity 101. The specific method can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0069] refer to Figure 5As shown, along the vertical direction, the position of each through hole 1241 is opposite to the position of each connecting member 13.

[0070] During installation, since the connecting piece 13 is fixed on the side beam 10, when the first box body 15 needs to be connected to the whole vehicle, it is only necessary to pass the sleeve 14 on the frame through the through hole 1241 to connect with the connecting piece 13, so as to avoid the sleeve 14 being directly welded to the side beam 10 to cause deformation of the side beam, thereby ensuring the structural strength of the side beam 10 and improving the strength of the entire first box body 15. At the same time, since the connecting piece 13 is located in the inner cavity 101, it can be prevented from falling off due to collision.

[0071] According to some embodiments of the present application, the side of the inner cavity 101 away from the first box body 15 is an open structure. In this way, the connector 13 can be conveniently placed in the inner cavity 101 for fixing through the open structure.

[0072] According to some embodiments of the present application, Figure 5 As shown, the side beam 10 includes a first beam plate 11 and a second beam plate 12 that are connected; at the same time, an inner recess 113 is provided on the first beam plate 11, and a protrusion 124 is provided on the second beam plate 12, and the protrusion 124 and the inner recess 113 are enclosed to form an inner cavity 101; the connecting member 13 is fixed on the side of the inner recess 113 facing the protrusion 124, and a through hole 1241 is provided on the protrusion 124.

[0073] In this embodiment, the first beam plate 11 and the second beam plate 12 can be connected together by bolts, or the first beam plate 11 and the second beam plate 12 can be stamped into one piece. The specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0074] The inner concave portion 113 in this embodiment is a groove structure formed on the first beam plate 11 , and the protruding portion 124 on the second beam plate 12 is a protruding structure formed on the second beam plate 12 . The specific structure can be determined according to actual conditions, and this specification embodiment does not limit this.

[0075] In this embodiment, when the first beam plate 11 and the second beam plate 12 are connected together, the inner recess 113 on the first beam plate 11 and the protrusion 124 on the second beam plate 12 enclose an inner cavity 101 .

[0076] The connecting member 13 is located in the inner cavity 101, and is fixed to a side of the inner recess 113 facing the protruding portion 124. In the vertical direction, the position of the through hole 1241 is opposite to the position of the connecting member 13.

[0077] During installation, it is only necessary to pass the sleeve 14 on the frame through the through hole 1241 and connect it to the connecting member 13 .

[0078] It should be noted that the structure of the side beam is only an example, and other structures may be used in other alternative solutions, for example, the side beam includes three layers of beams, etc. The present application does not impose any special restrictions on the specific structure of the side beam, as long as the above structure can achieve the purpose of the present application.

[0079] According to some embodiments of the present application, Figure 5 As shown, a protrusion 1131 is provided on the inner recess 113 , and the connecting member 13 is snap-connected to the protrusion 1131 .

[0080] An inner hole is provided on the connecting piece 13 in this embodiment. When the connecting piece 13 is placed into the inner cavity 101 from the opening structure on the side of the inner cavity 101 away from the first box body 15, the connecting piece 13 is then snapped onto the protrusion 1131. At this time, the protrusion 1131 is located in the inner hole on the connecting piece 13, and the protrusion 1131 is interference fit with the inner hole, so that the connecting piece 13 can be quickly and conveniently fixed to the inner recess 113.

[0081] According to some embodiments of the present application, Figure 6 As shown, a slot 1132 is provided on the inner recess 113 , and the connecting member 13 is fixed in the slot 1132 .

[0082] In this embodiment, after the connector 13 is placed into the inner cavity 101 from the opening structure on the side of the inner cavity 101 away from the first box body 15, the connector 13 is then snapped into the corresponding slot 1132, so that the connector 13 can be quickly and conveniently fixed to the inner recess 113.

[0083] In some specific embodiments, the opening size of the slot 1132 along the radial direction of the connector 13 is smaller than the outer diameter of the connector 13, so that when the connector 13 is inserted into the slot 1132, the side wall of the slot 1132 is tightly attached to the outer side of the connector 13, and the connector 13 can be located in the slot 1132.

[0084] According to some embodiments of the present application, Figure 7 As shown, the connecting member 13 is welded to the side of the inner recess 113 facing the protrusion 124 .

[0085] In this embodiment, after the connector 13 is placed into the inner cavity 101 from the opening structure on the side of the inner cavity 101 away from the first box body 15, the connector 13 is then placed into a designated position on the inner recess 113, and finally the connector 13 is welded to the inner recess 113 by spot welding.

[0086] Since the connector 13 is only welded to the inner concave portion 113, the connector 13 does not need to be welded to the protruding portion 124, so the overall welding amount is small, thereby reducing the impact of welding on the side beam 10. At the same time, the connector 13 can be firmly fixed in the inner concave portion 113.

[0087] According to some embodiments of the present application, Figure 5 or Figure 6 or Figure 7 As shown, under the condition that the sleeve 14 passes through the through hole 1241 and is fixedly connected to the connecting member 13, the end of the sleeve 14 away from the connecting member 13 is welded to the second beam plate 12. In this way, the sleeve 14 and the second beam plate 12 can be stably connected together, and the stability of the connection of the sleeve 14 is improved.

[0088] Of course, it is understandable that the end of the sleeve 14 away from the connecting member 13 can also be connected to the second beam plate 12 by bolts. The specific details can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0089] According to some embodiments of the present application, the sleeve 14 is clearance-matched with the through hole 1241 , so that it is convenient for the sleeve 14 to pass through the through hole 1241 and connect with the connector 13 .

[0090] In some specific embodiments, the outer diameter of the sleeve 14 is equal to the inner diameter of the through hole 1241 , so that when the sleeve 14 passes through the through hole 1241 and is connected to the connector 13 , shaking of the sleeve 14 relative to the through hole 1241 can be avoided.

[0091] According to some embodiments of the present application, Figure 5 As shown, the connecting member 13 is provided with an internal thread 131 , and the sleeve 14 is provided with an external thread at one end facing the connecting member 13 , and the external thread matches the internal thread 131 .

[0092] In this embodiment, the sleeve 14 and the connector 13 are connected together by threaded connection, so as to facilitate the connection between the sleeve 14 and the connector 13. Of course, it is understandable that the sleeve 14 and the connector 13 can also be connected together by a slot and a buckle structure, which can be determined according to actual conditions, and the embodiments of this specification are not limited to this.

[0093] The present application also provides an electrical device, comprising a battery device as described in any one of the embodiments of the present application.

[0094] The specific structure of the battery device in this embodiment refers to the above embodiment. Since all the technical solutions of all the above embodiments are adopted in this electrical device, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, It is characterized in that include: First box: A battery cell, wherein the battery cell is disposed in the first box; A side beam, the side beam being arranged on the side of the first box body; the side beam being provided with at least one inner cavity, and the side beam being provided with at least one through hole along one side of the first box body in the height direction; A connecting piece is fixed to the bottom surface of the inner cavity, and the position of the connecting piece corresponds to the position of the through hole. The first box is installed on the frame, and one end of the sleeve on the frame passes through the through hole and is fixedly connected to the connecting piece.

2. The battery device according to claim 1, It is characterized in that A side of the inner cavity away from the first box body is an open structure.

3. The battery device according to claim 2, It is characterized in that The side beam comprises a first beam plate and a second beam plate connected; The first beam plate is provided with an inner concave portion, the second beam plate is provided with a convex portion, and the convex portion and the inner concave portion are enclosed to form the inner cavity; The connecting member is fixed on a side of the inner recessed portion facing the protruding portion, and the through hole is arranged on the protruding portion.

4. The battery device according to claim 3, It is characterized in that The inner recess is provided with a protrusion, and the connecting piece is clamped on the protrusion.

5. The battery device according to claim 3, It is characterized in that The inner recessed portion is provided with a slot, and the connecting member is fixed in the slot.

6. The battery device according to claim 3, It is characterized in that The connecting piece is welded on a side of the inner recessed portion facing the protruding portion.

7. The battery device according to any one of claims 4 to 6, It is characterized in that One end of the sleeve away from the connecting member is welded to the second beam plate.

8. The battery device according to any one of claims 1 to 6, It is characterized in that The sleeve is loosely matched with the through hole.

9. The battery device according to any one of claims 1 to 6, It is characterized in that The connecting piece is provided with an internal thread, and the sleeve is provided with an external thread at one end facing the connecting piece, and the external thread matches the internal thread.

10. An electrical device, It is characterized in that Comprising the battery device according to any one of claims 1 to 9.

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