Battery device and electric device

Abstract

The utility model relates to a battery device and a power utilization device. The battery device comprises a box body and a cover body, an accommodating cavity with an opening at one end is formed in the box body, and the plurality of battery monomer groups are arranged in the accommodating cavity; all the battery monomer groups are arranged in rows along a first direction, the battery monomers in each battery monomer group are arranged in columns along a second direction, and the first direction is perpendicular to the second direction; the cover body covers the opening and comprises a body and at least one first reinforcing piece; the first reinforcing pieces extend in the second direction and are arranged on the surface, facing the containing cavity, of the body, and all the first reinforcing pieces are arranged at intervals in the first direction; wherein each first reinforcing piece is arranged on the surface, facing the accommodating cavity, of the body in a protruding manner, and when the cover body covers the opening, each first reinforcing piece is pressed on the surface, facing the body, of the two adjacent rows of battery monomer groups. According to the battery device provided by the embodiment of the invention, the first reinforcing piece is directly arranged on the body, so that the strength of the cover body is improved, and the mounting efficiency is also 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] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become a crucial component of this industry's sustainable development. With the widespread adoption of electric vehicles, users are placing increasingly high demands on the batteries that power them.

[0003] During the assembly of the battery device, in order to improve the strength of the battery device cover and prevent it from undergoing significant deformation, additional reinforcing ribs are generally provided to increase the strength of the cover. This makes the assembly steps of the battery device cumbersome and increases the assembly time. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can alleviate the problem of low assembly efficiency of the battery device.

[0005] In a first aspect, the present application provides a battery device comprising a housing and a cover. A housing having an open end forms a receiving cavity within the housing, wherein a plurality of battery cell groups are disposed within the receiving cavity; all battery cell groups are arranged in rows along a first direction, and the battery cells within each battery cell group are arranged in columns along a second direction, with the first direction being perpendicular to the second direction; the cover covers the opening and comprises a body and at least one first reinforcement member, wherein each first reinforcement member extends along the second direction and is disposed on a surface of the body facing the receiving cavity, and all first reinforcement members are spaced apart in the first direction; wherein each first reinforcement member protrudes from a surface of the body facing the receiving cavity, and when the cover covers the opening, each first reinforcement member is pressed against the surfaces of the battery cell groups of two adjacent rows facing the body.

[0006] In the technical solution of the embodiment of the present application, the strength of the cover body is improved by providing a first reinforcement member on the cover body. Furthermore, the first reinforcement member is supported by the shoulders of the battery cells, thereby providing a certain amount of support for the cover body and improving the cover's pressure-bearing capacity. When the battery device is in use, the probability of deformation of the cover body, such as bulging and denting, caused by expansion of the battery cells is reduced. Furthermore, compared to providing the cover body and the first reinforcement member separately, providing the first reinforcement member directly on the body achieves an integrated cover body and improves installation efficiency.

[0007] In some embodiments, the cover further includes at least one second reinforcement member, each second reinforcement member extending along the second direction and disposed on a surface of the body facing away from the accommodating cavity, and all second reinforcement members are spaced apart in the first direction.

[0008] In this way, the first reinforcement member and the second reinforcement member are respectively provided on both sides of the main body along the thickness direction of the cover, which further improves the strength of the cover itself and reduces the probability of deformation of the cover due to the expansion force of the battery cell.

[0009] In some embodiments, along the thickness direction of the cover, the second reinforcement member is disposed opposite to the first reinforcement member, and the thickness direction, the first direction, and the second direction intersect with each other.

[0010] In this way, the shoulder of the battery cell can support the first reinforcement and the second reinforcement at the same time, reducing the probability of deformation such as bulging and denting of the cover due to expansion of the battery cell.

[0011] In some embodiments, the cover body also includes a locking piece. Along the second direction, first through holes are respectively opened at both ends of the first reinforcement piece, and second through holes are respectively opened at both ends of the second reinforcement piece. The locking piece passes through the second through hole, the main body and the first through hole in sequence to connect with the box body.

[0012] In this way, the use of locking members to connect different parts of the cover and the case improves the stability of the connection between the cover and the case, and enhances the overall strength of the cover and the case. When the battery cell expands, the probability of deformation of the cover or the case due to the expansion force is reduced.

[0013] In some embodiments, a groove is provided on the body, and a second reinforcement member is provided in the groove.

[0014] Thus, by providing a groove on the body to install the second reinforcement, the overall thickness of the cover can be reduced as much as possible in the thickness direction of the cover, thereby reducing the space occupied by the cover and thus reducing the volume and occupied space of the entire battery device.

[0015] In some embodiments, the first reinforcement member is configured as an insulating member, and along the first direction, a length of the first reinforcement member is greater than a length of the groove.

[0016] In this way, in the first direction, the length of the first reinforcement is made longer than the groove, so that the insulating first reinforcement can be used to cover the outer bottom wall of the groove protruding on the cover body to separate the cover body and the battery cell, thereby achieving insulating contact between the cover body and the battery cell, and reducing the probability of insulation failure between the cover body and the battery cell due to contact between the cover body and the battery cell.

[0017] In some embodiments, the second reinforcement member is detachably mounted in the groove.

[0018] Such an arrangement not only facilitates the assembly of the second reinforcement, but also, when either the second reinforcement or the main body is damaged, only the damaged part needs to be replaced with a new one, without having to replace the entire cover, thus reducing maintenance costs.

[0019] In some embodiments, a surface of the second reinforcement member facing away from the groove is lower than the notch of the groove, or is flush with the notch.

[0020] In this way, by controlling the length of the second reinforcement in the thickness direction of the cover, the overall thickness of the cover is controlled, thereby improving the strength of the cover without changing the occupied space of the cover as much as possible.

[0021] In some embodiments, the connection between the first reinforcement and the body is a detachable connection.

[0022] Such an arrangement not only facilitates the assembly of the first reinforcement, but also, when either the first reinforcement or the main body is damaged, only the damaged part needs to be replaced with a new one, without having to replace the entire cover, thus reducing maintenance costs.

[0023] In a second aspect, the present application provides an electrical device comprising the battery device in the above embodiment.

[0024] 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

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0026] Figure 1 Schematic diagram of the structure of an electrical device according to one or more embodiments.

[0027] Figure 2 FIG. 4 is an exploded view of a battery device according to one or more embodiments.

[0028] Figure 3 is a schematic diagram of the exploded structure of a battery cell according to one or more embodiments.

[0029] Figure 4 Schematic diagram of the structure of a cover of a battery device according to one or more embodiments.

[0030] Figure 5 is a cross-sectional view of a cover of a battery device according to one or more embodiments.

[0031] Figure 6 for Figure 5Enlarged view of point A in the middle.

[0032] Figure 7 Schematic diagram of the structure of a first reinforcement member of a battery device according to one or more embodiments.

[0033] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0034] The accompanying drawings in the specific implementation manner are as follows:

[0035] 1000. Vehicle;

[0036] 100, battery device; 200, controller; 300, motor;

[0037] 10. Box body; 20. Cover body; 21. Main body; 211. Groove; 22. First reinforcement; 221. First through hole; 23. Second reinforcement; 24. Locking member; 30. Battery cell; 31. End cover; 31a. Electrode terminal; 32. Housing; 33. Electrode assembly; X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of this application, the use of technical terms such as "first" and "second" is solely for distinguishing different objects and should not be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of this application, the term "and / or" is used to describe the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document, if it appears, generally indicates that the related objects are in an "or" relationship.

[0043] In the description of the embodiments of the present application, if it appears, 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).

[0044] In the description of the embodiments of the present application, if any, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0046] Currently, market developments indicate that power batteries are becoming increasingly widely used. Power batteries are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in aerospace and other fields. As power battery applications continue to expand, market demand is also growing.

[0047] During the assembly of a battery device, additional reinforcement ribs are typically installed between the cover and the housing to enhance the strength of the cover. Because the cover and the reinforcement ribs are assembled separately, this increases the number of assembly steps and the assembly time.

[0048] Based on the above considerations, and to address the technical issue of low assembly efficiency in battery devices, the present application provides a battery device having a cover with integrated reinforcing ribs that enhance the cover's inherent strength. During assembly, the cover and the housing can be directly assembled together, eliminating the need for additional reinforcing ribs to enhance the cover's strength, thereby improving assembly efficiency.

[0049] The battery device disclosed in the embodiments of the present application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. The battery device disclosed in the present application can be used to form a power supply system for the electrical device.

[0050] The embodiments of the present application provide an electrical device that uses a battery as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, an energy storage product, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the energy storage product may include an energy storage station, 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 , Figure 1A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. 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 device 100 is provided inside the vehicle 1000. The battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may serve 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 device 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0053] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also 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 2 The exploded view of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a housing 10 and a cover 20. A receiving cavity with an opening at one end is formed inside the housing 10. A plurality of battery cell groups are arranged in the receiving cavity. All battery cell groups are arranged in rows along a first direction X, and the battery cells 30 in each battery cell group are arranged in columns along a second direction Y. The first direction X and the second direction Y are perpendicular to each other. The cover 20 covers the opening and includes a body 21 and at least one first reinforcement 22. Each first reinforcement 22 extends along the second direction Y and is arranged on the surface of the body 21 facing the receiving cavity. All first reinforcements 22 are spaced apart in the first direction X. Each first reinforcement 22 is protruded from the surface of the body 21 facing the receiving cavity. When the cover 20 covers the opening, each first reinforcement 22 is pressed against the surface of two adjacent rows of battery cell groups facing the body 21.

[0055] The housing 10 may be a hollow structure with one end open, and the cover 20 may be a plate-like structure. The cover 20 covers the open side of the housing 10, and the battery cells 30 are accommodated in the space defined by the housing 10 and the cover 20. Of course, the housing 10 formed by the cover 20 and the housing 10 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0056] The multiple battery cells 30 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the multiple battery cells 30. The multiple battery cells 30 can be directly connected in series, in parallel, or in a hybrid configuration, and then the entire assembly of the multiple battery cells 30 is housed within the housing 10. Alternatively, the battery assembly 100 can be constructed by first connecting multiple battery cells 30 in series, in parallel, or in a hybrid configuration to form a battery module. The multiple battery modules are then connected in series, in parallel, or in a hybrid configuration to form an entire assembly, which is then housed within the housing 10. The battery assembly 100 can also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 30.

[0057] Each battery cell 30 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 30 may be cylindrical, flat, rectangular, or in other shapes.

[0058] Please refer to Figure 3 , Figure 3 The following is a schematic diagram of the exploded structure of a battery cell 30 provided in some embodiments of the present application. The battery cell 30 refers to the smallest unit that makes up the battery. Figure 3 The battery cell 30 includes an end cover 31, a shell 32, an electrode assembly 33 and other functional components.

[0059] The end cap 31 is a component that covers the opening of the housing 32 to isolate the internal environment of the battery cell 30 from the external environment. The shape of the end cap 31 can be adapted to the shape of the housing 32 to fit the housing 32. The end cap 31 can be made of a material with a certain degree of hardness and strength (such as an aluminum alloy). This prevents deformation of the end cap 31 under pressure or collision, thereby enhancing the structural strength and safety of the battery cell 30. The end cap 31 can be provided with functional components such as electrode terminals 31a. The electrode terminals 31a can be used to electrically connect to the electrode assembly 33 to transmit or receive electrical energy from the battery cell 30. In some embodiments, the end cap 31 can also be provided with a pressure relief mechanism to release internal pressure when the internal pressure or temperature of the battery cell 30 reaches a threshold. The end cap 31 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic, and this is not particularly limited in the present embodiment. In some embodiments, an insulating member may be provided inside the end cap 31 to isolate the electrical connection components in the housing 32 from the end cap 31 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0060] The housing 32 is a component that cooperates with the end cap 31 to form the internal environment of the battery cell 30. This internal environment can be used to accommodate the electrode assembly 33, electrolyte, and other components. The housing 32 and end cap 31 can be separate components. An opening can be provided in the housing 32, and the end cap 31 is placed over the opening to form the internal environment of the battery cell 30. Alternatively, the end cap 31 and housing 32 can be integrated. Specifically, the end cap 31 and housing 32 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 32 is to be enclosed, the end cap 31 is placed over the housing 32. The housing 32 can have a variety of shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, or a hexagonal prism. Specifically, the shape of the housing 32 can be determined based on the specific shape and size of the electrode assembly 33. The housing 32 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any particular limitations on this.

[0061] The electrode assembly 33 is a component in the battery cell 30 where electrochemical reactions occur. One or more electrode assemblies 33 may be contained in the housing 32. The electrode assembly 33 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 33, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive and negative electrode tabs may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery device 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0062] Please continue reading Figure 2 The first reinforcement member 22 may be protruding from the main body 21 of the cover 20 and may be in the shape of an elongated strip. The number of the first reinforcement members 22 may be adjusted according to the number of battery cell groups.

[0063] For example, Figure 2 As shown, the battery device 100 includes six battery cell groups distributed along a first direction X within the housing 10. Five first reinforcement members 22 are provided on the main body 21 of the cover 20, spaced apart along the first direction X. Each first reinforcement member 22 is positioned above a battery cell 30 and opposite two adjacent battery cell groups. In other words, when the cover 20 is closed over the housing 10, a portion of a single first reinforcement member 22 contacts the shoulder of one of the two adjacent battery cell groups, while another portion of a single first reinforcement member 22 contacts the shoulder of the other battery cell group.

[0064] In summary, the provision of the first reinforcement member 22 on the main body 21 of the cover 20 enhances the strength of the cover 20. Furthermore, the first reinforcement member 22, supported by the shoulders of the battery cells 30, provides a certain degree of support for the cover 20, thereby enhancing the pressure-bearing capacity of the cover 20. This reduces the likelihood of deformation of the cover 20, such as bulging or denting, caused by expansion of the battery cells 30 during use of the battery device 100.

[0065] In addition, compared with providing the cover body 20 and the first reinforcement member 22 separately, directly providing the first reinforcement member 22 on the main body 21 realizes the integration of the cover body 20 and improves the installation efficiency.

[0066] like Figure 2 and Figure 4 As shown, the cover 20 further includes at least one second reinforcement 23 , each second reinforcement 23 extending along the second direction Y and disposed on a surface of the body 21 away from the accommodating cavity, and all second reinforcements 23 are spaced apart in the first direction X.

[0067] The structure of the second reinforcement member 23 is similar to that of the first reinforcement member 22, and both can be configured in a strip shape. The second reinforcement member 23 can be made of metal material or other materials with high hardness.

[0068] In this way, the first reinforcement 22 and the second reinforcement 23 are respectively provided on both sides of the body 21 along the thickness direction Z of the cover 20 , further improving the strength of the cover 20 itself and reducing the probability of deformation of the cover 20 due to the expansion force of the battery cell 30 .

[0069] Further, if Figures 4 to 6 As shown, in some embodiments, along the thickness direction Z of the cover 20 , the second reinforcement member 23 is disposed opposite to the first reinforcement member 22 , and the thickness direction Z, the first direction X, and the second direction Y intersect with each other.

[0070] It can be understood that the number of the second reinforcement members 23 is equal to the number of the first reinforcement members 22. The first reinforcement members 22 and the second reinforcement members 23 correspondingly arranged along the thickness direction Z of the cover body 20 are divided into one group, and one group is taken as an example for description.

[0071] After the cover 20 is closed on the box body 10, the first reinforcement 22 contacts the shoulders of two adjacent battery cell groups therein, and the second reinforcement 23, which is a group with the first reinforcement 22, is located on the side of the main body 21 away from the battery cell 30 and is arranged directly opposite the shoulders of the above-mentioned two adjacent battery cell groups.

[0072] In this way, the shoulder of the battery cell 30 can support the first reinforcement 22 and the second reinforcement 23 at the same time, reducing the probability of deformation such as bulging and denting of the cover 20 caused by the expansion of the battery cell 30 .

[0073] Furthermore, if Figure 2 、 Figure 7 and Figure 8 As shown, the cover body 20 also includes a locking member 24. Along the second direction Y, first through holes 221 are respectively opened at both ends of the first reinforcement member 22, and second through holes are respectively opened at both ends of the second reinforcement member 23. The locking member 24 passes through the second through hole, the main body 21 and the first through hole 221 in sequence to connect with the box body 10.

[0074] For example, when assembling the battery device 100, a locking member 24 (e.g., a bolt) is sequentially passed through the second through-hole of the second reinforcement member 23, the body 21, and the first through-hole 221 of the first reinforcement member 22 to connect to the housing 10. It should be noted that the first reinforcement member 22, the second reinforcement member 23, and the housing 10 are all connected together via the locking member 24.

[0075] In this way, the locking members 24 connect different parts of the cover 20 to the case 10, improving the stability of the connection between the cover 20 and the case 10 and enhancing the overall strength of the cover 20 and the case 10. This reduces the probability of deformation of the cover 20 or the case 10 due to the expansion force when the battery cells 30 expand.

[0076] In some embodiments, a first sealing member is further provided at the location of the housing 10 connected to the first reinforcement member 22. That is, the locking member 24 is passed through the first reinforcement member 22 and then through the first sealing member before being connected to the housing 10. Providing the first sealing member between the first reinforcement member 22 and the housing 10 improves the sealing performance of the connection between the first reinforcement member 22 and the housing 10.

[0077] It should be noted that a second seal is also provided between the main body 21 and the box body 10 . The second seal is annular in shape and matches the opening profile of the box body 10 , thereby increasing the sealing effect between the main body 21 and the box body 10 .

[0078] Specifically, in some embodiments, a groove 211 is provided on the body 21 , and a second reinforcement member 23 is provided in the groove 211 .

[0079] The depth and width of the groove 211 may be changed according to the change of the second reinforcement member 23. For example, if the second reinforcement member 23 is in the shape of an elongated strip, the shape of the groove 211 is also in the shape of an elongated strip.

[0080] As for providing the groove 211 on the main body 21 for installing the second reinforcement 23, the overall thickness of the cover 20 in the thickness direction Z of the cover 20 can be reduced as much as possible, thereby reducing the space occupied by the cover 20 and thus reducing the volume and occupied space of the entire battery device 100.

[0081] Furthermore, in some embodiments, the first reinforcement member 22 is configured as an insulating member, and along the first direction X, the length of the first reinforcement member 22 is greater than the length of the groove 211 .

[0082] For example, the first reinforcement member 22 can be made of an insulating composite material such as synthetic rubber. When the cover 20 is closed over the box 10, the recess 211 provided on the cover 20 for mounting the second reinforcement member 23 may deform under the action of the expansion force, causing contact with the battery cell 30, and increasing the probability of insulation failure between the cover 20 and the battery cell 30.

[0083] Therefore, in the first direction X, the length of the first reinforcement 22 is made longer than the groove 211, so that the insulating first reinforcement 22 can be used to cover the outer bottom wall of the groove 211 protruding from the cover body 20 to separate the cover body 20 and the battery cell 30, thereby achieving insulating contact between the cover body 20 and the battery cell 30, and reducing the probability of insulation failure between the cover body 20 and the battery cell 30 due to the contact between the main body 21 and the battery cell 30.

[0084] Furthermore, in some embodiments, the second reinforcement member 23 is detachably installed in the groove 211 .

[0085] For example, the second reinforcement member 23 can be installed in the groove 211 by bonding, clamping, etc.

[0086] Such a configuration not only facilitates the assembly of the second reinforcement member 23, but also, when either the second reinforcement member 23 or the body 21 is damaged, only the damaged part needs to be replaced with a new one, without having to replace the entire cover 20, thus reducing maintenance costs.

[0087] Furthermore, the surface of the second reinforcement member 23 facing away from the groove 211 is lower than the notch of the groove 211 or is flush with the notch.

[0088] In this way, by controlling the length of the second reinforcement 23 in the thickness direction Z of the cover 20 , the overall thickness of the cover 20 can be controlled, thereby improving the strength of the cover 20 itself without changing the occupied space of the cover 20 as much as possible.

[0089] In some embodiments, the connection between the first reinforcement 22 and the body 21 is a detachable connection.

[0090] For example, the first reinforcement member 22 can be installed in the groove 211 by bonding, clamping, etc.

[0091] Such a configuration not only facilitates the assembly of the first reinforcement member 22, but also, when either the first reinforcement member 22 or the body 21 is damaged, only the damaged part needs to be replaced with a new one, without having to replace the entire cover 20, thus reducing maintenance costs.

[0092] In addition, some embodiments of the present application further provide an electrical device comprising the battery device 100 of the above embodiment. Based on the same inventive concept, the electrical device has the same beneficial effects as the battery device 100, which will not be described in detail here.

[0093] In one embodiment, a battery device 100 includes a housing 10 and a cover 20. One end of the housing 10 is open and recessed inward to form a receiving cavity. The receiving cavity contains a plurality of battery cell groups distributed along a first direction X. Each battery cell group includes a plurality of battery cells 30 distributed along a second direction Y. The first direction X and the second direction Y intersect.

[0094] The cover 20 covers the opening and includes a main body 21, a first reinforcement 22, and a second reinforcement 23. The first reinforcement 22 is connected to the main body 21 and is located on the side of the main body 21 facing the accommodating cavity. The first reinforcement 22 extends along the second direction Y and is spaced apart along the first direction X. A single first reinforcement 22 is positioned corresponding to and in contact with two adjacent battery cell groups. The second reinforcement 23 extends along the second direction Y and is located on the surface of the main body 21 facing away from the accommodating cavity.

[0095] When the cover 20 is closed over the box 10, a portion of a single first reinforcement member 22 contacts the shoulder of one of the two adjacent battery cell groups, and another portion of the single first reinforcement member 22 contacts the shoulder of the other battery cell group. A second reinforcement member 23, which is grouped with the first reinforcement member 22, is located on the side of the body 21 facing away from the battery cells 30 and is positioned directly opposite the shoulders of the two adjacent battery cell groups.

[0096] The first and second reinforcement members 22, 23 are provided on the main body 21 of the cover 20, thereby enhancing the strength of the cover 20. Furthermore, the first reinforcement member 22 is supported by the shoulders of the battery cells 30, providing a certain degree of support for the cover 20 and improving its pressure-bearing capacity. This reduces the likelihood of deformation of the cover 20, such as bulging or denting, caused by expansion of the battery cells 30, during use of the battery device 100.

[0097] Furthermore, compared to separately arranging the cover 20 , the first reinforcement 22 and the second reinforcement 23 , directly arranging the first reinforcement 22 and the second reinforcement 23 on the body 21 achieves integration of the cover 20 and improves installation efficiency.

[0098] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery device, characterized in that: include: The box body has a receiving cavity formed inside with one end open; A plurality of battery cell groups are arranged in the accommodating cavity; all the battery cell groups are arranged in rows along a first direction, and the battery cells in each battery cell group are arranged in columns along a second direction, the first direction being perpendicular to the second direction; as well as a cover body, covering the opening and comprising a main body and at least one first reinforcement member; each first reinforcement member is extended along the second direction and disposed on a surface of the main body facing the accommodating cavity, and all the first reinforcement members are spaced apart in the first direction; Wherein, each first reinforcement member is protrudingly provided on the surface of the main body facing the accommodating cavity, and when the cover body is closed on the opening, each first reinforcement member is pressed against the surface of the battery cell groups of two adjacent rows facing the main body.

2. The battery device according to claim 1, wherein: The cover further includes at least one second reinforcement member, each of the second reinforcement members extending along the second direction and disposed on a surface of the body facing away from the accommodating cavity, and all of the second reinforcement members are spaced apart in the first direction.

3. The battery device according to claim 2, characterized in that Along the thickness direction of the cover body, the second reinforcement member is arranged opposite to the first reinforcement member, and the thickness direction, the first direction and the second direction intersect with each other.

4. The battery device according to claim 2, wherein: The cover body also includes a locking piece. Along the second direction, first through holes are respectively opened at both ends of the first reinforcement piece, and second through holes are respectively opened at both ends of the second reinforcement piece. The locking piece passes through the second through holes, the main body and the first through holes in sequence and is connected to the box body.

5. The battery device according to claim 4, characterized in that The main body is provided with a groove, and the second reinforcement member is provided in the groove.

6. The battery device according to claim 5, characterized in that The first reinforcement member is configured as an insulating member. Along the first direction, a length of the first reinforcement member is greater than a length of the groove.

7. The battery device according to claim 5, characterized in that The second reinforcement is detachably mounted in the groove.

8. The battery device according to claim 5, characterized in that The surface of the second reinforcement member facing away from the groove is lower than the notch of the groove or is flush with the notch.

9. The battery device according to any one of claims 1 to 7, characterized in that The connection between the first reinforcement and the body is a detachable connection.

10. An electrical device, characterized in that: A battery device comprising the battery device according to any one of claims 1 to 9.

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