Battery device and electric appliance

Abstract

The application relates to a battery device and an electric device, the battery device comprising a box body, a battery monomer arranged in the interior of the box body, and a mounting piece connected with the box body, the mounting piece being configured to be integrally extruded and having multiple cavities. The mounting piece in the application is integrally extruded to form multiple cavities, on one hand, the structure of the integrally formed mounting piece is more stable, and the ability of the battery device to resist extrusion and collision on the side is more improved, on the other hand, the formation of the multiple cavities can further reduce the weight of the mounting piece.

Description

Technical Field

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

[0002] During use, battery devices need to be installed in different electrical devices. Therefore, a mounting structure is usually set on the battery device to connect and fix the battery device to the electrical device.

[0003] However, the current mounting structure is relatively complex and its own weight is relatively large, resulting in a large overall weight of the battery device, which is not conducive to the lightweighting of the battery device. Utility Model Content

[0004] Therefore, it is necessary to provide a battery device and electrical equipment to address the problem that the current mounting structure is relatively complex and heavy, resulting in a large overall weight of the battery device and hindering its lightweight design.

[0005] In a first aspect, this application provides a battery device, including a housing body, a battery cell, and a mounting component, wherein the battery cell is disposed inside the housing body; the mounting component is connected to the housing body; and the mounting component is constructed as an integral extrusion molding and has multiple cavities.

[0006] With the above structure, the mount is integrally extruded into multiple cavities. On the one hand, the structure of the integrally formed mount is more stable, which is more conducive to improving the side compression and impact resistance of the battery device. On the other hand, the formation of each cavity can further reduce the weight of the mount.

[0007] In some embodiments, the mount includes a connecting wall that fits against the side wall of the housing body, and a mounting hole is formed through the connecting wall; the battery device also includes a connector of the same material as the housing body, the connector being configured to pass through the mounting hole and be welded to the housing body, so that the mount is connected to the housing body.

[0008] The above structure not only enables a stable connection between the mounting components and the box body, but also maintains the integrity of the box body structure, thereby effectively improving the long-term airtight reliability of the box body.

[0009] In some embodiments, a structural adhesive layer is provided between the connecting wall and the side wall of the corresponding box body.

[0010] By setting a structural adhesive layer, firstly, the connection area between the mounting component and the box body can be increased, improving connection stability; secondly, the structural adhesive layer can solve the gap corrosion problem caused by large-area bonding between the mounting component and the box body; in addition, since the mounting component and the box body are made of different materials, the structural adhesive layer can also act as an isolation layer, reducing corrosion problems caused when different materials are connected.

[0011] In some embodiments, an adhesive groove is formed on the surface of the connecting wall facing the box body. This increases the amount of structural adhesive filling between the mounting component and the box body, further improving the connection stability between the two.

[0012] In some embodiments, the mounting component further includes a bearing area and a collapse area. The bearing area is connected to the side surface of the connecting wall away from the box body. The collapse area is formed by extending from the end of the bearing area away from the connecting wall in a direction away from the box body, and the collapse area is provided with a mounting position for installing an external mounting sleeve. Both the bearing area and the collapse area form multiple cavities. Along the height direction of the box body, the height of the bearing area gradually decreases from the end connected to the connecting wall to the end connected to the collapse area.

[0013] The aforementioned structure allows the mounting component to not only install and secure the battery pack, but also withstand a certain amount of external impact, protecting the main body of the enclosure and the individual battery cells inside. Furthermore, the load-bearing area provides even better protection for the enclosure and its internal battery cells when subjected to external impacts.

[0014] In some embodiments, the mounting component further includes a support wall, one end of which is connected to the connecting wall, and the other end of which extends away from the connecting wall. The support wall is in contact with the bottom wall of the box body and is fixedly connected to the bottom wall.

[0015] The above structure allows the support wall to form an integral load-bearing structure with the box body, transferring a portion of the force on the box body to the mounting components, thus strengthening the supporting effect of the mounting components on the box body.

[0016] In some embodiments, reinforcing ribs are formed protruding from the surface of the support wall opposite to the box body. By providing reinforcing ribs, the structural strength of the support wall can be improved, thereby further enhancing the supporting effect of the mounting components on the box body.

[0017] In some embodiments, the mass density of the mount is less than the mass density of the box body.

[0018] Therefore, the mass density of the mounting component is less than that of the main body of the battery pack, which allows the mounting component to have a lighter weight. When the mounting component is connected to the main body of the battery pack, it can effectively reduce the overall weight of the battery pack and achieve lightweighting of the battery pack.

[0019] In some embodiments, the casing body is made of steel, and the mounting component is made of aluminum. Therefore, the mounting component is lighter than the casing body, effectively reducing the overall weight of the battery device.

[0020] Secondly, this application also provides an electrical device, including the battery device described above.

[0021] The aforementioned battery device and electrical equipment have a mounting component formed by integral extrusion molding, which creates multiple cavities. On the one hand, the integrally molded mounting component has a more stable structure, which is more conducive to improving the battery device's resistance to compression and impact. On the other hand, the formation of each cavity can further reduce the weight of the mounting component. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a vehicle according to one or more embodiments.

[0023] Figure 2 This is an exploded structural diagram of a battery device according to one or more embodiments.

[0024] Figure 3 This is an exploded structural diagram of a battery cell according to one or more embodiments.

[0025] Figure 4 A side view of a battery device according to one or more embodiments.

[0026] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0027] Figure 6 This is a structural diagram of a battery device according to one or more embodiments, showing the connection between the mounting member and the housing body.

[0028] Figure 7 for Figure 5 A magnified view of a section at point B in the middle.

[0029] Figure 8 This is a schematic diagram of the structure of the support wall in a battery device according to one or more embodiments.

[0030] Explanation of reference numerals in the attached drawings: 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, housing; 20, battery cell; 30, housing body; 40, mounting component; 50, connector; 11, first part; 12, second part; 21, top cover; 22, housing; 23, electrode assembly; 41, cavity; 42, connecting wall; 43, structural adhesive layer; 44, adhesive groove; 45, load-bearing area; 46, crumple zone; 47, mounting position; 48, support wall; 49, reinforcing rib; a, height direction. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0038] A battery device consists of one or more battery cells. For each battery device, the multiple battery cells that make up it can be connected in series, in parallel, or in a mixed configuration. Among them, a mixed configuration means that multiple battery cells are connected in both series and parallel.

[0039] A battery pack typically includes a housing, individual battery cells housed inside the housing, and other functional components. During use, the battery pack needs to be installed into the corresponding electrical equipment; therefore, a mounting structure is usually installed on the outside of the housing to secure the battery pack to its designated position.

[0040] Furthermore, in addition to its installation and fixing functions, the mounting structure also bears some external forces, providing a certain degree of protection for the main body of the box and the battery cells inside.

[0041] Current mounting structures are typically made of the same material as the battery pack body, namely steel, to facilitate better welding of the mounting structure to the pack body. However, this structure results in a significant overall weight for the battery pack, hindering the achievement of lightweight design.

[0042] In addition, the mounting structure itself is usually formed by welding, which is not only complicated, but also has problems such as large heat input, large deformation, and poor air tightness. Moreover, it has poor resistance to impact and compression on the sides.

[0043] Based on the above considerations, in order to solve the problem that the current mounting structure is relatively complex and the mounting structure itself is relatively heavy, resulting in a large overall weight of the battery device, which is not conducive to the lightweighting of the battery device, one or more embodiments of this application provide a battery device in which the mounting component is integrally extruded to form multiple cavities. On the one hand, the structure of the integrally formed mounting component is more stable and is more conducive to improving the side compression and impact resistance of the battery device. On the other hand, the formation of each cavity can further reduce the weight of the mounting component.

[0044] It should be noted that the battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0045] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0046] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0047] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0048] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0049] The battery devices disclosed in this application can be used, but are not limited to, in electrical equipment such as vehicles, ships, or aircraft.

[0050] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. 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.

[0051] 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.

[0052] Please refer to Figure 1 The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

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

[0054] Please refer to Figure 2 The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which overlap each other, collectively defining a space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one open end, and the first portion 11 may be a plate-like structure, covering the open side of the second portion 12 so that the first portion 11 and the second portion 12 together define the space. Alternatively, both the first portion 11 and the second portion 12 may be hollow structures with one open side, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a cuboid, etc.

[0055] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0056] Each battery cell 20 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 20 can be cylindrical, flat, cuboid, or other shapes.

[0057] Please refer to Figure 3 A battery cell 20 refers to the smallest unit that makes up a battery. A battery cell 20 typically includes a top cover 21, a housing 22, an electrode assembly 23, and other functional components. The top cover 21 is a component that closes onto the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the top cover 21 may be adapted to the shape of the housing 22 to fit the housing 22. Functional components such as electrode terminals may be provided on the top cover 21; electrode terminals may also be called terminals. The electrode terminals can be used to electrically connect to the electrode assembly 23 for outputting or inputting electrical energy into the battery cell 20. In some embodiments, the top cover 21 may also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. In some embodiments, an insulating member may also be provided inside the top cover 21. The insulating member can be used to isolate the electrical connection components within the housing 22 from the top cover 21 to reduce the risk of short circuits. Exemplarily, the insulating member may be made of plastic, rubber, etc.

[0058] The housing 22 is a component used to cooperate with the top cover 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the top cover 21 can be independent components. An opening can be provided on the housing 22, and the top cover 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the top cover 21 and the housing 22 can be integrated. Specifically, the top cover 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the top cover 21 closes the housing 22. The housing 22 can have various shapes and sizes, such as cuboid, cylindrical, or hexagonal prism. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23.

[0059] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. Electrode assembly 23 mainly consists of a positive electrode, a separator, and a negative electrode. Specifically, positive and negative active materials are coated onto the current collector to form the positive and negative electrode, respectively. The positive and negative electrode are wound or stacked, with the separator positioned between them, thus forming electrode assembly 23. The portions of the positive and negative electrode with active material constitute the main body of electrode assembly 23, 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 charging and discharging, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0060] See Figure 4 and Figure 5 One embodiment of this application provides a battery device 100, including a housing body 30, a battery cell 20, and a mounting member 40. The battery cell 20 is disposed inside the housing body 30, and the mounting member 40 is connected to the housing body 30. The mounting member 40 is constructed by integral extrusion molding and has multiple cavities 41.

[0061] It should be noted that the interior of the box body 30 has a receiving cavity for housing the battery cell 20. Furthermore, the box body 30 may include a first part 11 and a second part 12 that overlap each other, with the first part 11 and the second part 12 together forming the receiving cavity.

[0062] The battery cell 20 is the smallest unit that makes up the battery device 100. The number of battery cells 20 can be set to one or more, and all battery cells 20 are placed in the receiving cavity of the housing body 30 so that the housing body 30 can protect the battery cells 20 in the receiving cavity.

[0063] Mounting component 40 refers to a structure that is connected to the outside of the enclosure body 30 and can be used to install and fix the enclosure body 30 to the corresponding position of the electrical equipment.

[0064] Furthermore, the mounting component 40 is integrally extruded to form multiple cavities 41. This makes the structure of the integrally formed mounting component 40 more stable, which is more conducive to improving the side resistance to compression and impact of the battery device 100. In addition, because multiple cavities 41 are formed on the mounting component 40, its weight can be further reduced, thereby achieving the goal of lightweighting.

[0065] Through the above structure, the mount 40 is integrally extruded to form multiple cavities 41. On the one hand, the structure of the integrally formed mount 40 is more stable, which is more conducive to improving the side compression and impact resistance of the battery device 100. On the other hand, the formation of each cavity 41 can further reduce the weight of the mount 40.

[0066] like Figure 6 As shown, in some embodiments, the mounting member 40 includes a connecting wall 42 that fits against the side wall of the housing body 30, and a mounting hole (not shown) is formed through the connecting wall 42. The battery device 100 also includes a connector 50 made of the same material as the housing body 30, and the connector 50 is configured to pass through the mounting hole and be welded to the housing body 30 so that the mounting member 40 is connected to the housing body 30.

[0067] Specifically, the box body 30 includes a bottom wall and side walls surrounding the bottom wall, with the side walls intersecting the bottom wall. The connecting wall 42 fits into the side walls of the box body 30, allowing the mounting component 40 to make surface contact with the box body 30, increasing the contact area between the two and making the connection between them more stable.

[0068] Furthermore, the connector 50 may be, but is not limited to, a connecting pin, and the connector 50 may be made of the same material as the housing body 30. During assembly, the connector 50 may be passed through the mounting hole on the connecting wall 42, so that the connector 50 contacts the side wall of the housing body 30, and then the connector 50 may be welded to the side wall of the housing body 30, thereby achieving a fixed connection between the mounting member 40 and the housing body 30 through the connector 50.

[0069] Since the mounting component 40 and the box body 30 have different densities, that is, the mounting component 40 and the box body 30 are made of different materials, a stable connection between the mounting component 40 and the box body 30 can be achieved by using a connector 50 made of the same material as the box body 30.

[0070] In addition, the connector 50 is welded to the side wall of the housing body 30 after passing through the mounting hole, which can maintain the structural integrity of the housing body 30 and thus effectively improve the long-term airtight reliability of the housing body 30.

[0071] The above structure not only enables a stable connection between the mounting component 40 and the box body 30, but also maintains the structural integrity of the box body 30, thereby effectively improving the long-term airtight reliability of the box body 30.

[0072] like Figure 7 As shown, in some embodiments, a structural adhesive layer 43 is provided between the connecting wall 42 and the side wall of the corresponding box body 30.

[0073] Specifically, a structural adhesive layer 43 is formed between the connecting wall 42 and the side wall of the connected box body 30 by filling with structural adhesive.

[0074] By setting the structural adhesive layer 43, firstly, the connection area between the mounting component 40 and the box body 30 can be increased, thereby improving the connection stability; secondly, the structural adhesive layer 43 can solve the gap corrosion problem caused by the large-area bonding between the mounting component 40 and the box body 30; in addition, since the mounting component 40 and the box body 30 are made of different materials, the structural adhesive layer 43 can also play an isolation role, reducing the corrosion problem caused when different materials are connected.

[0075] In some embodiments, a groove 44 is provided on the side surface of the connecting wall 42 facing the box body 30.

[0076] Specifically, the adhesive groove 44 can easily accommodate structural adhesive. This increases the amount of structural adhesive filling between the mounting component 40 and the housing body 30, further improving the connection stability between the two.

[0077] Please refer to it again. Figure 5 In some embodiments, the mounting member 40 further includes a bearing area 45 and a collapse area 46. The bearing area 45 is connected to the side surface of the connecting wall 42 away from the box body 30. The collapse area 46 is formed by extending from the end of the bearing area 45 away from the connecting wall 42 in a direction away from the box body 30, and the collapse area 46 is provided with a mounting position 47 for installing an external mounting sleeve. Both the bearing area 45 and the collapse area 46 form multiple cavities 41.

[0078] Specifically, the mounting component 40 can be divided into a bearing area 45 and a collapsible area 46. The bearing area is connected to the connecting wall 42 and is mainly used to bear the force when the mounting component 40 is subjected to external forces. The collapsible area 46 is formed by extending the bearing area 45 away from the box body 30. The collapsible area 46 can be provided with a mounting position 47 for installing an external mounting sleeve, such as a through hole. The mounting sleeve is inserted into the through hole and then connected to the corresponding structure of the electrical equipment, thereby realizing the installation and fixation of the box body 30 on the electrical equipment.

[0079] The bearing area 45 and the collapse area 46 are each formed with multiple cavities 41, which can effectively reduce the overall weight of the mounting component 40, thereby reducing the overall weight of the battery device 100 and achieving the lightweighting of the battery device 100.

[0080] Through the above structure, the mounting component 40 can not only install and fix the battery device 100, but also withstand a certain amount of external impact, thus protecting the box body 30 and the battery cells 20 inside.

[0081] In some embodiments, along the height direction a of the box body 30, the height of the bearing area 45 gradually decreases from the end connected to the connecting wall 42 to the end connected to the collapse area 46.

[0082] Specifically, the height direction 'a' of the housing body 30 is perpendicular to the bottom wall of the housing body 30. The height of the bearing area 45 gradually decreases from the end connected to the connecting wall 42 to the end connected to the collapse area 46. In other words, the end of the bearing area 45 connected to the connecting wall 42 is larger, and the end connected to the collapse area 46 is smaller. In this way, the bearing area 45 can better protect the housing body 30 and the battery cells 20 inside when subjected to external impact.

[0083] Please refer to the following: Figure 5 and Figure 8 In some embodiments, the mounting member 40 further includes a support wall 48, one end of which is connected to the connecting wall 42, and the other end extends away from the connecting wall 42. The support wall 48 is in contact with the bottom wall of the box body 30 and is fixedly connected to the bottom wall.

[0084] Specifically, the support wall 48 is formed by the connecting wall 42 extending toward the side away from the bearing area 45, and the support wall 48 is located at the bottom of the box body 30 and fits against the bottom wall of the box body 30.

[0085] Furthermore, the support wall 48 can be fixedly connected to the bottom wall of the box body 30 by means of steel nails or spot welding. In this way, by supporting the box body 30, the support wall 48 can form an integral load-bearing structure with the box body 30, and transfer a part of the force on the box body 30 to the mounting member 40.

[0086] As a specific embodiment, the support wall 48 can cover 10mm to 25mm of the bottom wall of the box body 30. That is, the overlap between the support wall 48 and the bottom wall of the box body 30 is 10mm to 25mm. In this way, without affecting the overall manufacturing process of the battery device 100, the force on the box body 30 can be distributed through the support wall 48.

[0087] Through the above structure, the support wall 48 can form an integral force-bearing structure with the box body 30, transferring a part of the force on the box body 30 to the mounting member 40, thereby strengthening the supporting effect of the mounting member 40 on the box body 30.

[0088] In some embodiments, the support wall 48 has a reinforcing rib 49 protruding from the side surface opposite to the box body 30.

[0089] Specifically, the number of reinforcing ribs 49 can be set to multiple. By setting reinforcing ribs 49, the structural strength of the supporting wall 48 can be improved, thereby further strengthening the supporting effect of the mounting component 40 on the box body 30.

[0090] In some embodiments, the mass density of the mounting component 40 is less than the mass density of the box body 30.

[0091] The mass density of the mounting component 40 is less than that of the housing body 30. Specifically, the density of the material used in the mounting component 40 is less than that of the material used in the housing body 30. As a result, the weight of the mounting component 40 is less than that of the housing body 30. When the mounting component 40 is attached to the housing body 30, the overall weight of the battery device 100 can be effectively reduced.

[0092] The above structure allows the mounting component 40 to have a lighter weight. When the mounting component 40 is connected to the housing body 30, it can effectively reduce the overall weight of the battery device 100, achieving a lightweight design. Furthermore, due to the low density of the mounting component 40, it can be easily integrally extruded, giving the mounting component 40 multiple cavities 41, thereby further reducing its weight.

[0093] In some embodiments, the casing 30 is made of steel, and the mounting component 40 is made of aluminum. Therefore, the mounting component 40 is lighter than the casing 30, effectively reducing the overall weight of the battery device 100.

[0094] When the body of the box 30 is made of steel, the connector 50 is made of steel nails.

[0095] Understandably, in some other embodiments, the materials of the box body 30 and the mounting component 40 may also be other materials, such as steel and aluminum alloy. The specific materials can be adjusted according to actual needs, as long as the weight of the mounting component 40 can be reduced, which will not be elaborated here.

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

[0097] According to one or more embodiments, when this application is used, the connecting wall 42 of the mounting member 40 is first attached to the side wall of the box body 30, the connecting member 50 is passed through the mounting hole, and the connecting member 50 is welded to the side wall of the box body 30.

[0098] Meanwhile, structural adhesive is filled between the connecting wall 42 and the side wall of the box body 30 to form a structural adhesive layer 43. The bottom wall of the box body 30 is supported on the support wall 48. The support wall 48 is welded to the bottom wall of the box body 30. A portion of the force on the box body 30 is transferred to the mounting member 40 through the support wall 48, thereby realizing the supporting function of the mounting member 40 for the box body 30.

[0099] The aforementioned mounting component 40 not only reduces the overall weight of the battery device 100, but also enhances the battery device 100's ability to resist compression and impact on its sides.

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

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

Claims

1. A battery device, characterized in that, include: Box body; The battery cells are disposed inside the main body of the casing; and The mounting component is connected to the box body; the mounting component is constructed as an integral extrusion molding and has multiple cavities.

2. The battery device according to claim 1, characterized in that, The mounting component includes a connecting wall that fits against the side wall of the box body, and a mounting hole is provided through the connecting wall; The battery device also includes a connector made of the same material as the housing body. The connector is configured to pass through the mounting hole and be welded to the housing body so that the mounting component is connected to the housing body.

3. The battery device according to claim 2, characterized in that, A structural adhesive layer is provided between the connecting wall and the side wall corresponding to the box body.

4. The battery device according to claim 3, characterized in that, A glue groove is provided on the side surface of the connecting wall facing the box body.

5. The battery device according to claim 2, characterized in that, The mounting component also includes a bearing area and a collapse area. The bearing area is connected to the side surface of the connecting wall away from the box body. The collapse area is formed by extending from the end of the bearing area away from the connecting wall in a direction away from the box body, and the collapse area is provided with a mounting position for installing an external mounting sleeve. The bearing area and the collapse area are each formed with multiple cavities; along the height direction of the box body, the height of the bearing area gradually decreases from the end connected to the connecting wall to the end connected to the collapse area.

6. The battery device according to claim 2, characterized in that, The mounting component also includes a support wall, one end of which is connected to the connecting wall, and the other end extends away from the connecting wall. The support wall is in contact with the bottom wall of the box body and is fixedly connected to the bottom wall.

7. The battery device according to claim 6, characterized in that, The supporting wall has reinforcing ribs protruding from the side of the box body.

8. The battery device according to claim 1, characterized in that, The mass density of the mounting component is less than the mass density of the box body.

9. The battery device according to claim 8, characterized in that, The main body of the box is made of steel, and the mounting component is made of aluminum.

10. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-9.

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