Box body, battery and electric equipment

Abstract

The invention relates to the technical field of battery structures, and provides a box body, a battery and electric equipment, the box body is used for being arranged on a main body of the electric equipment, the box body comprises a bottom plate and a mounting beam, the bottom plate is provided with an outer wall surface, the mounting beam is used for connecting the main body, the mounting beam comprises a connecting part, and the connecting part is configured to be connected to the bottom plate; at least part of the connecting part is attached to the outer wall surface; according to the box body provided by the embodiment of the invention, the box body can be connected to the main body of the electric equipment through the mounting beam, the mounting beam is connected and attached to the bottom plate through the connecting part, and the contact area between the mounting beam and the bottom plate can be increased by arranging the connecting part; therefore, the larger contact area between the bottom plate and the connecting part can disperse the stress between the bottom plate and the mounting beam, that is, the risk of breakage between the bottom plate and the connecting part is lower, and the box body is more reliable when being hung on the main body of the electric equipment through the mounting beam.

Description

Technical Field

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

[0002] When the battery is mounted for use, it will be connected to the main body of the electrical equipment through the beam structure provided on the battery box, so as to achieve the mounting and fixing of the battery on the main body of the electrical equipment such as vehicles, aircraft, ships, etc. However, during operation, the electrical equipment may vibrate, which may cause the battery to vibrate to a certain extent relative to the main body; therefore, the stress formed between the beam structure of the box and the bottom plate of the box is relatively large, and the risk of fracture between the beam structure and the bottom plate is relatively high. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a box, a battery and an electrical device, aiming to solve the problem in the related art that when the box is mounted and used, large stress may be generated between the beam structure and the bottom plate, and the beam structure and the bottom plate are prone to fracture.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0005] In the first aspect, an embodiment of the present application provides a box body, which is used to be set on the main body of the electrical equipment. The box body includes a bottom plate and a mounting beam. The bottom plate has an outer wall surface. The mounting beam is used to connect the main body. The mounting beam includes a connecting portion, which is configured to be connected to the bottom plate, and at least a portion of the connecting portion is in contact with the outer wall surface.

[0006] Beneficial effects of the embodiments of the present application: The box body provided in the embodiments of the present application can be connected to the main body of the electrical equipment through a mounting beam, wherein the mounting beam is connected and fits with the base plate through a connecting portion, and the mounting beam can increase the contact area with the base plate by setting a connecting portion, so that the larger contact area between the base plate and the connecting portion can disperse the stress between the base plate and the mounting beam, that is, the risk of fracture between the base plate and the connecting portion is lower, and the box body is more reliable when mounted on the main body of the electrical equipment through the mounting beam.

[0007] In some embodiments, the mounting beam further comprises a beam body, the beam body is used to be connected to the main body, and the connecting portion is arranged on the beam body.

[0008] By adopting the above-mentioned technical solution, when the box is mounted on the main body using the mounting beam, the beam body of the mounting beam can be connected to the main body, and the connecting part of the mounting beam is arranged on the beam body and is connected and fitted to the outer wall surface of the bottom plate to achieve stress dispersion, thereby reducing the probability of fracture between the mounting beam and the bottom plate when the box is mounted on the main body.

[0009] In some embodiments, the connecting portion extends outward from the beam body and beyond the beam body.

[0010] By adopting the above-mentioned technical solution, the connecting part can extend beyond the beam body, that is, the connecting part has a larger fitting area with the outer wall surface of the base plate, and the force dispersion effect of the connecting part on the base plate is better, so that the risk of fracture between the installation beam and the base plate is lower, and the box is mounted on the main body more stably.

[0011] In some embodiments, the beam body is spaced apart from the outer wall surface.

[0012] By adopting the above-mentioned technical solution, when the connecting portion of the mounting beam is connected to the base plate and fits against the outer wall surface of the base plate, a gap will be formed between the beam body of the mounting beam and the outer wall surface of the base plate, so that the beam body can form an avoidance effect on the outer wall surface of the base plate, thereby reducing the risk of interference between the beam body and the structure arranged on the outer wall surface of the base plate.

[0013] In some embodiments, a mounting structure is provided on the beam body, and the beam body is configured to be connected to the main body through the mounting structure; along the thickness direction of the base plate, the projection of the mounting structure is located within the projection of the connecting portion.

[0014] By adopting the above-mentioned technical scheme, when the beam body of the mounting beam is connected to the main body through the mounting structure, the main body may vibrate and cause the box to vibrate relative to the main body, thereby causing the overall weight of the box to form a large force on the mounting structure and the main body; at the same time, a certain amplitude of vibration will be generated between the connecting part of the mounting beam and the bottom plate to generate a large force. By arranging the mounting structure so that the projection in the thickness direction of the bottom plate is located inside the connecting part, the position of the force between the main body and the mounting structure and the force between the connecting part and the bottom plate in the thickness direction of the bottom plate roughly coincides, thereby effectively reducing the force between the main body and the mounting structure and the force between the connecting part and the bottom plate to form a lever on the mounting beam, reducing damage to the mounting beam and the main body connected to the mounting beam and the bottom plate, and reducing the risk of fracture between the mounting beam and the bottom plate. The box is mounted on the main body more stably.

[0015] In some embodiments, the beam body abuts against the outer wall surface.

[0016] By adopting the above-mentioned technical solution, on the basis that the connecting portion of the mounting beam can be connected to and at least partially adhere to the outer wall surface of the base plate, the beam body can also abut the outer wall surface, thereby effectively increasing the contact area between the mounting beam and the base plate, that is, the mounting beam can disperse the force acting on the base plate through the beam body and the connecting portion at the same time, further reducing the risk of fracture between the mounting beam and the base plate.

[0017] In some embodiments, the entirety of the connecting portion is configured to be symmetrically arranged about the central axis of the beam body.

[0018] By adopting the above technical solution, the process of transmitting the force between the main body and the beam body to the connection part and the base plate is more even, so that the force dispersion effect of the connection part on the base plate is better and the risk of fracture between the installation beam and the base plate is lower.

[0019] In some embodiments, the base plate is provided with a beam body along its central axis.

[0020] By adopting the above technical solution, when the main body vibrates, the box also vibrates relative to the main body, and the mounting beam is connected to the main body, which is equivalent to the other parts of the box vibrating relative to the mounting beam; the beam body of the mounting beam is arranged on the central axis of the base plate, that is, the mounting beam is located at the amplitude center of the base plate, and the connecting part of the mounting beam is more evenly subjected to the force of the base plate, thereby the risk of breakage of the mounting beam can be reduced to a certain extent.

[0021] In some embodiments, there are multiple connecting parts, and the multiple connecting parts are arranged at intervals.

[0022] By adopting the above technical solution, multiple spaced connection parts can be used to connect and fit with the bottom plate, and the force acting on the bottom plate can be dispersed through multiple connection parts, which can effectively reduce the risk of breakage between the connection parts and the bottom plate.

[0023] In some embodiments, the mounting beam also includes a beam body, the portion of the beam body facing the outer wall forms a connecting portion, and the portion of the beam body facing away from the outer wall forms a mounting portion, the mounting portion is used to connect the main body, and along the thickness direction of the base plate, the projection of the mounting portion is located within the projection of the connecting portion.

[0024] By adopting the above-mentioned technical solution, the projection of the mounting portion is set to be within the projection of the connecting portion in the direction of the base plate, that is, the area of ​​the connecting portion is larger than the area of ​​the mounting portion. By utilizing a connecting portion with a larger area to achieve connection and fit with the base plate, the force exerted by the base plate on the connecting portion can be dispersed, thereby effectively reducing the risk of fracture between the connecting portion and the base plate.

[0025] In some embodiments, the bottom plate is provided with a flow channel, the flow channel contains a heat exchange medium, and along the thickness direction of the bottom plate, a projection of the flow channel and a projection of the connecting portion are separated from each other.

[0026] By adopting the above technical solution, the flow channel and the connecting portion can be separated in the thickness direction of the bottom plate, thereby reducing the influence of the connecting portion on the flow channel.

[0027] In a second aspect, an embodiment of the present application further provides a battery, comprising a battery cell and a box as described above, wherein the battery cell is located in the box.

[0028] Beneficial effects of the embodiments of the present application: The battery provided in the embodiments of the present application includes the above-mentioned box body, and the overall structure of the battery is more stable with a low risk of fracture between the mounting beam and the bottom plate of the box body.

[0029] In a third aspect, an embodiment of the present application further provides an electrical device, including a main body and a battery as described above, wherein a battery housing is disposed on the main body, and the battery is used to provide electrical energy.

[0030] Beneficial effects of the embodiments of the present application: The electrical equipment provided by the embodiments of the present application includes the above-mentioned battery. When the overall structure of the battery is more stable, the process of the battery being arranged on the main body and providing electrical energy to the main body is more stable, and the risk of the battery falling off the main body is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0033] Figure 2 An exploded view of a battery provided for some embodiments of the present application;

[0034] Figure 3 A schematic diagram of a partial structure of a box including a bottom plate provided in some embodiments of the present application;

[0035] Figure 4 A schematic diagram of a connection structure between a base plate and a mounting beam provided in some embodiments of the present application;

[0036] Figure 5 A schematic diagram of the structure of a mounting beam provided in some embodiments of the present application;

[0037] Figure 6 A schematic diagram of the structure of another base plate provided for some embodiments of the present application;

[0038] Figure 7 A schematic diagram of the structure of another mounting beam provided in some embodiments of the present application;

[0039] Figure 8 A schematic diagram of the structure of another mounting beam provided in some embodiments of the present application;

[0040] Fig. 9 A schematic diagram of the structure of another mounting beam provided in some embodiments of the present application;

[0041] Fig.10 A schematic diagram of the structure of another mounting beam provided for some embodiments of the present application.

[0042] Among them, the reference numerals in the figure are:

[0043] 1000. Vehicles;

[0044] 100, battery, 200, controller, 300, motor;

[0045] 10. box body, 11. first part, 12. second part, 20. battery cell;

[0046] 110, bottom plate, 111, outer wall surface, 1101, flow channel;

[0047] 120, mounting beam, 121, connecting portion, 122, beam body, 1221, mounting structure;

[0048] L, length direction; N, thickness direction. DETAILED DESCRIPTION

[0049] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0050] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing 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, and therefore should not be understood as a limitation on the present application.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In this application, unless otherwise clearly specified and limited, the terms "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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] 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.

[0054] When the battery is mounted for use, it will be connected to the main body of the electrical equipment through the beam structure provided on the battery box, so as to realize the mounting and fixing of the battery on the main body of the electrical equipment such as vehicles, aircraft, ships, etc., and provide electrical energy to the main body. However, during operation, the electrical equipment may vibrate. For example, the vehicle may be bumpy during operation, which will cause a certain amplitude of vibration between the connected main body and the battery, that is, stress will be generated between the main body and the beam structure provided on the battery box, and the beam structure is connected to the bottom plate of the box, so a certain amplitude of vibration will also be formed between the beam structure and the bottom plate and generate greater stress. Since the structural strength of the beam structure is relatively high, the beam structure can withstand the stress generated between the main body and the beam structure, and the probability of the beam structure breaking is low. The stress generated between the beam structure and the bottom plate is likely to cause a break between the beam structure and the bottom plate, or cause the risk of deformation, rupture and other damage to the bottom plate.

[0055] Based on the above considerations, in order to solve the problem in the related technology that large stress may be generated between the beam structure and the bottom plate, and fracture is easy to occur between the beam structure and the bottom plate during the mounting and use of the box, a box is designed, which is connected to the bottom plate by utilizing the connecting part of the mounting beam, and at least part of the connecting part is attached to the outer wall surface of the bottom plate. The connecting part is used to increase the contact area with the bottom plate, thereby realizing stress dispersion between the mounting beam and the bottom plate, so as to effectively reduce the probability of fracture, damage, deformation and other risks between the mounting beam and the bottom plate.

[0056] In such a box, a connecting part is used to connect to the bottom plate, and the connecting part and the outer wall surface of the bottom plate are in contact with each other. When the main body of the electrical equipment vibrates during mounting and use of the box, the bottom plate will also vibrate to a certain extent relative to the mounting beam, thereby generating stress between the bottom plate and the mounting beam. The connection method in which the connecting part and the outer wall surface of the bottom plate are in contact with each other can disperse the stress between the bottom plate and the mounting beam to reduce the influence of stress concentration, and reduce the risk of deformation, fracture, breakage and other damages between the mounting beam and the bottom plate caused by stress concentration, so as to make the structure of the box more stable during use, thereby increasing the service life of the box.

[0057] The box disclosed in the embodiment of the present application can be used for electric devices that use batteries as power sources or various energy storage systems that use batteries as energy storage elements. Electric devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0058] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device in an embodiment of the present application.

[0059] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure 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, and 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, and 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 also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0060] 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.

[0061] Please refer to Figure 2 , Figure 2An exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a box 10 and a battery cell 20, and the battery cell 20 is contained in the box 10. Among them, the box 10 is used to provide a storage space for the battery cell 20, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20. The second part 12 may be a hollow structure with one end open, the first part 11 may be a plate-like structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box 10 formed by the first part 11 and the second part 12 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0062] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 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 box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0063] Each battery cell 20 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 20 may be cylindrical, flat, rectangular, or in other shapes.

[0064] According to some embodiments of this application, please refer to Figures 2 to 4 The embodiment of the present application provides a box body 10, which is used to be set on the main body of the electrical equipment. The box body 10 includes a bottom plate 110 and a mounting beam 120. The bottom plate 110 has an outer wall surface 111. The mounting beam 120 is used to connect the main body. The mounting beam 120 includes a connecting portion 121. The connecting portion 121 is configured to be connected to the bottom plate 110, and at least a portion of the connecting portion 121 is in contact with the outer wall surface 111.

[0065] The bottom plate 110 is the base structure of the box body 10, and the bottom plate 110 can generally be a plate-shaped structure; it can be understood that the bottom plate 110 can be but not limited to an aluminum plate, a steel plate, an iron plate, an alloy plate, etc. The outer wall surface 111 of the bottom plate 110 refers to the wall surface of the bottom plate 110 facing the outside of the box body 10.

[0066] The main body of the electrical equipment refers to the main structure of the electrical equipment. For example, when the electrical equipment is a vehicle 1000, the main body is the body of the vehicle 1000, and the box body 10 is connected to the body for assembly and use.

[0067] The mounting beam 120 is a beam structure provided on the bottom plate 110 and used to connect the main body. The mounting beam 120 can mount the box 10 on the main body for use; wherein, the mounting beam 120 and the main body can be connected in a manner that the mounting beam 120 and the corresponding parts of the main body are fixed by fasteners such as bolts. The mounting beam 120 can be, but is not limited to, an aluminum beam, a steel beam, an alloy beam, etc. The number of mounting beams 120 can be one or more; when the number of mounting beams 120 is one, the mounting beam 120 can be provided at any location of the outer wall surface 111 of the bottom plate 110 and connected to the bottom plate 110; when the number of mounting beams 120 is multiple, the multiple mounting beams 120 can be arranged at intervals in the length direction of the bottom plate 110. For example, in some specific embodiments, the number of mounting beams 120 is one, and the mounting beam 120 is arranged along the central axis a of the bottom plate 110.

[0068] The mounting beam 120 includes a connecting portion 121, which is used to connect with the bottom plate 110 and fit with the outer wall surface 111 of the bottom plate 110. Optionally, the connecting portion 121 may be an external structure provided on the mounting beam 120, such as a fin, a flat plate, a support block, etc., and the above structure may be provided on the mounting beam 120 by welding, bonding, screwing, etc. In this case, the number of the connecting portions 121 may be one or more; or the connecting portion 121 may also be a portion formed by a part of the mounting beam 120 for connecting with the bottom plate 110. For example, the connecting portion 121 may be a beam side wall of the mounting beam 120 facing the bottom plate 110. In this case, the surface area of ​​the above beam side wall may be increased by widening the mounting beam 120, thereby increasing the area of ​​the fit connection with the outer wall surface 111 of the bottom plate 110, or only widening the beam side wall on the above side may specifically increase the surface area of ​​the beam side wall on that side.

[0069] Among them, the connecting part 121 is connected to the base plate 110. Optionally, the connecting part 121 and the base plate 110 can be connected by welding, bonding, screwing, etc.; for example, in some specific embodiments, the connecting part 121 can be connected to the base plate 110 by spot welding to form a whole.

[0070] At least a portion of the connecting portion 121 is in contact with the outer wall surface 111. It can be understood that the side wall of the connecting portion 121 facing the outer wall surface 111 can be completely in contact with the outer wall surface 111; or, a bending structure or an avoidance structure can be formed on the connecting portion 121 so that a portion of the connecting portion 121 is in contact with the outer wall surface 111.

[0071] The box body 10 provided in the embodiment of the present application can be connected to the main body of the electrical equipment through the mounting beam 120, wherein the mounting beam 120 is connected and fits with the bottom plate 110 through the connecting portion 121, and the mounting beam 120 can disperse the stress between the bottom plate 110 and the mounting beam 120 by setting the connecting portion 121, so that the risk of fracture between the bottom plate 110 and the connecting portion 121 is reduced, and the box body 10 is more reliable when mounted on the main body of the electrical equipment through the mounting beam 120.

[0072] According to some embodiments of this application, please refer to Figures 2 to 5 The mounting beam 120 further includes a beam body 122 , the beam body 122 is used to be connected to the main body, and the connecting portion 121 is disposed on the beam body 122 .

[0073] It can be understood that the beam body 122 refers to the beam structure part of the mounting beam 120, and the connecting part 121 can be set on the beam body 122, for example, it can be fixedly connected to the beam body 122 by welding, screwing, bonding, or integrally formed on the beam body 122.

[0074] Among them, the beam body 122 can adopt an extruded aluminum structure; the beam body 122 is used to connect to the main body. Optionally, a connecting hole (through hole, threaded hole, etc.) can be opened on the beam body 122, and fasteners such as bolts and screws can be inserted into the connecting hole to fix the beam body 122 to the main body.

[0075] With such a configuration, when the box body 10 is mounted on the main body using the mounting beam 120, the beam body 122 of the mounting beam 120 can be connected to the main body, and the connecting portion 121 of the mounting beam 120 is disposed on the beam body 122 and is connected and fitted to the outer wall surface 111 of the bottom plate 110 to achieve the dispersion of the force, thereby reducing the probability of fracture between the mounting beam 120 and the bottom plate 110 when the box body 10 is mounted on the main body.

[0076] According to some embodiments of this application, please refer to Figure 2 , Figures 4 to 8 The connecting portion 121 extends outward from the beam body 122 and exceeds the beam body 122 .

[0077] It can be understood that the connection portion 121 extends outward and exceeds the beam body 122. The connection portion 121 can extend in any direction outside the beam body 122 and exceed the beam body 122, and then is connected to the bottom plate 110 through the connection portion 121, so that the stress dispersion between the bottom plate 110 and the connection portion 121 can be achieved. Among them, the connection portion 121 can be set on one side of the beam body 122 and extend outward of the beam body 122, or the connection portion 121 can extend outward of the beam body 122 at the same time on opposite sides of the beam body 122.

[0078] For example, in some specific embodiments, in a direction parallel to the outer wall surface 111 and perpendicular to the length direction L of the beam body 122, the connecting portion 121 can extend outward from the beam body 122 and beyond the beam body 122, so that the connecting portion 121 has a larger surface area, that is, the area where the connecting portion 121 fits with the outer wall surface 111 of the base plate 110 can be larger, thereby dispersing the stress between the base plate 110 and the mounting beam 120, so that the risk of fracture between the base plate 110 and the connecting portion 121 is reduced.

[0079] With such arrangement, the connection portion 121 can extend beyond the beam body 122, that is, the connection portion 121 has a larger fitting area with the outer wall surface 111 of the bottom plate 110, and the force dispersion effect of the connection portion 121 on the bottom plate 110 is better, so that the risk of fracture between the installation beam 120 and the bottom plate 110 is lower, and the box body 10 is mounted on the main body more stably.

[0080] According to some embodiments of this application, please refer to Figure 2 , Figure 4 and Figure 5 The beam body 122 is spaced apart from the outer wall surface 111 .

[0081] It can be understood that when the connecting portion 121 is attached to and connected to the outer wall surface 111, the beam body 122 is spaced apart from the outer wall surface 111; that is, a side surface of the connecting portion 121 that is attached to the outer wall surface 111 and a side surface of the beam body 122 facing the outer wall surface 111 form a drop in the thickness direction N of the base plate 110; optionally, the connecting portion 121 can be fixedly connected to a side surface of the beam body 122 facing the outer wall surface 111, so that the connecting portion 121 forms the above-mentioned drop according to its own thickness.

[0082] In this way, when the connecting portion 121 of the mounting beam 120 is connected to the base plate 110 and fits against the outer wall surface 111 of the base plate 110, a gap is formed between the beam body 122 of the mounting beam 120 and the outer wall surface 111 of the base plate 110, so that the beam body 122 can form an avoidance effect on the outer wall surface 111 of the base plate 110, thereby reducing the risk of interference between the beam body 122 and the structure arranged on the outer wall surface 111 of the base plate 110.

[0083] According to some embodiments of this application, please refer to Figure 2 , Figure 4 and Figure 5 A mounting structure 1221 is provided on the beam body 122 , and the beam body 122 is configured to be connected to the main body through the mounting structure 1221 ; along the thickness direction N of the base plate 110 , the projection of the mounting structure 1221 is located within the projection of the connecting portion 121 .

[0084] It can be understood that the above-mentioned mounting structure 1221 can be a mounting hole (threaded hole, through hole, etc.), and the beam body 122 can be connected to the main body through the mounting hole using fasteners such as bolts and screws; or, the mounting structure 1221 can also be a welding area for welding, and the welding process can be used to weld the area to be welded to the main body to form a whole.

[0085] In this way, when the beam body 122 of the mounting beam 120 is connected to the main body through the mounting structure 1221, when the main body vibrates, the box body 10 vibrates relative to the main body, thereby causing the overall weight of the box body 10 to form a large force between the mounting structure 1221 and the main body; at the same time, vibration will also be generated between the connecting portion 121 of the mounting beam 120 and the bottom plate 110 to generate a large force. By arranging the mounting structure 1221 so that the projection in the thickness direction N of the bottom plate 110 is located inside the connecting portion 121, the main body and the mounting structure 1221 are The force between 221 and the force between the connecting portion 121 and the bottom plate 110 roughly coincide with each other in the thickness direction N of the bottom plate 110, thereby effectively reducing the force between the main body and the mounting structure 1221 and the force between the connecting portion 121 and the bottom plate 110 to form a lever on the mounting beam 120, thereby reducing the stress on the mounting beam 120 and between the main body connected to the mounting beam 120 and the bottom plate 110, and the risk of fracture between the mounting beam 120 and the bottom plate 110 is lower, and the box body 10 is mounted on the main body more stably.

[0086] According to some embodiments of this application, please refer to Figures 6 to 8 , Figure 6 A schematic diagram of another structure of a base plate 110 provided in some embodiments of the present application, wherein: Figure 6 The bottom plate 110 in the Figure 7 The mounting beam 120, Figure 8 The mounting beam 120 in the embodiment or other various mounting beams 120 that meet the requirements, therefore, Figure 6 The bottom plate 110 in the figure does not show a structure for specifically mounting the beam 120 .

[0087] In this embodiment, the beam body 122 abuts against the outer wall surface 111 .

[0088] It can be understood that when the connecting portion 121 is attached to and connected to the outer wall surface 111, the beam body 122 is in contact with the outer wall surface 111, that is, the side surface of the connecting portion 121 that is attached to the outer wall surface 111 is flush with the side surface of the beam body 122 facing the outer wall surface 111 in the thickness direction N of the bottom plate 110; optionally, a groove can be formed on the beam body 122, and the connecting portion 121 can be fixed in the groove so that the surface of the beam body 122 is flush with the surface of the connecting portion 121; or, the connecting portion 121 can be fixedly arranged on the surface of the beam body 122 intersecting the outer wall surface 111, and the side surface of the connecting portion 121 that is attached to the outer wall surface 111 is flush with the side surface of the beam body 122 facing the outer wall surface 111.

[0089] In this configuration, based on the fact that the connecting portion 121 of the mounting beam 120 can be connected to and at least partially adhere to the outer wall surface 111 of the base plate 110, the beam body 122 can also abut against the outer wall surface 111, thereby effectively increasing the contact area between the mounting beam 120 and the base plate 110, that is, the mounting beam 120 can simultaneously disperse the force acting on the base plate 110 through the beam body 122 and the connecting portion 121, further reducing the risk of fracture between the mounting beam 120 and the base plate 110.

[0090] According to some embodiments of this application, please refer to Figures 2 to 5 The entirety of the connecting portion 121 is configured to be symmetrically arranged about the central axis of the beam body 122 .

[0091] Optionally, the connection portion 121 may be symmetrically arranged about the central axis b of the beam body 122 along the length direction L thereof; or, the connection portion 121 may also be symmetrically arranged about the central axis c of the beam body 122 perpendicular to the length direction L; Figure 5 As shown, Figure 5 The connecting portion is symmetrical about the central axis b of the beam body 122 along the length direction L thereof, and is also symmetrical about the central axis c of the beam body 122 perpendicular to the length direction L thereof.

[0092] With such arrangement, utilizing the symmetrical distribution structure of the connecting portion 121 with respect to the beam body 122, the process of transmitting the force from the main body to the beam body 122 to between the connecting portion 121 and the base plate 110 is more even, thereby better dispersing the force of the connecting portion 121 on the base plate 110 and lowering the risk of fracture between the mounting beam 120 and the base plate 110.

[0093] According to some embodiments of this application, please refer to Figures 2 to 5 The bottom plate 110 is provided with a beam body 122 along its axis a.

[0094] The central axis a of the bottom plate 110 refers to an auxiliary line that can divide the bottom plate 110 into two symmetrical parts; the beam body 122 is arranged along the central axis a of the bottom plate 110 .

[0095] It can be understood that when the main body of the electrical equipment vibrates, since the beam body 122 of the mounting beam 120 is fixedly connected to the main body, a certain degree of vibration will also be generated between the connecting part 121 of the mounting beam 120 and the base plate 110, thereby generating stress between the connecting part 121 and the base plate 110.

[0096] With such arrangement, when the main body vibrates, the box body 10 also vibrates relative to the main body, and the mounting beam 120 is connected to the main body, which is equivalent to the other parts of the box body 10 vibrating relative to the mounting beam 120; the beam body 122 of the mounting beam 120 is arranged along the central axis a of the bottom plate 110, that is, the mounting beam 120 is located at the amplitude center of the bottom plate 110, and the connecting part 121 of the mounting beam 120 is more evenly subjected to the force of the bottom plate 110, thereby the risk of the mounting beam 120 breaking can also be reduced to a certain extent.

[0097] Optionally, mounting beams may be provided at both ends of the outer wall surface 111 of the bottom plate 110 about the central axis a, and the box body 10 may be fixedly connected to the main body through the mounting beams to be mounted and used synchronously with the mounting beams 120 .

[0098] According to some embodiments of this application, please refer to Figures 2 to 5 The number of the connecting parts 121 is multiple, and the multiple connecting parts 121 are arranged at intervals.

[0099] Among them, multiple connecting parts 121 can be spaced apart in any direction; for example, multiple connecting parts 121 can be spaced apart in the length direction L of the beam body 122; or, multiple connecting parts 121 can also be spaced apart in the length direction L perpendicular to the beam body 122, for example, distributed on opposite sides of the beam body 122.

[0100] With such a configuration, a plurality of spaced connection portions 121 can be used to connect and fit with the base plate 110 , and the force acting on the base plate 110 can be dispersed by the plurality of connection portions 121 , which can effectively reduce the risk of fracture between the connection portions 121 and the base plate 110 .

[0101] According to some embodiments of this application, please refer to Figure 6 , Fig. 9 and Fig.10 The mounting beam 120 also includes a beam body 122. The portion of the beam body 122 facing the outer wall surface 111 forms a connecting portion 121, and the portion of the beam body 122 facing away from the outer wall surface 111 forms a mounting portion. The mounting portion is used to connect the main body. Along the thickness direction N of the base plate 110, the projection of the mounting portion is located within the projection of the connecting portion 121.

[0102] The part of the beam body 122 facing the outer wall surface 111 forms the connection part 121, that is, the connection part 121 is a part of the beam body 122. By improving the beam body 122 itself, the projection of the mounting part is located within the projection of the connection part 121 in the thickness direction N of the bottom plate 110, that is, the surface area of ​​one side of the connection part 121 is increased, so that a larger fitting area is achieved between the connection part 121 and the outer wall surface 111 of the bottom plate 110, and the dispersion effect of the force of the connection part 121 on the bottom plate 110 is better, so that the risk of fracture between the mounting beam 120 and the bottom plate 110 is lower.

[0103] Optionally, the projection of the mounting portion may be located within the projection of the connecting portion 121 in the thickness direction N of the base plate 110 by: setting the beam body 122 as a trapezoidal beam, that is, the cross-section of the beam body 122 is trapezoidal, in which case the side with the larger outer wall of the two parallel side walls of the trapezoidal beam may be used as the connecting portion 121; or, setting the beam body 122 as a convex beam, that is, the cross-section of the beam body 122 is roughly in the shape of a "convex" letter, in which case the side with the larger outer wall of the convex beam may be used as the connecting portion 121; or, the beam body 122 may be designed to be widened as a whole so that the surface area of ​​the outer wall of the beam body 122 used as the connecting portion 121 is increased.

[0104] In this way, the projection of the mounting portion is arranged to be located within the projection of the connecting portion 121 in the direction of the base plate 110, that is, the area of ​​the connecting portion 121 is larger than the area of ​​the mounting portion. The connecting portion 121 with a larger area is utilized to achieve connection and fit with the base plate 110, which can disperse the force exerted by the base plate 110 on the connecting portion 121, thereby effectively reducing the risk of fracture between the connecting portion 121 and the base plate 110.

[0105] According to some embodiments of this application, please refer to Figures 2 to 5The bottom plate 110 is provided with a flow channel 1101 , and the flow channel 1101 contains a heat exchange medium. Along the thickness direction N of the bottom plate 110 , the projection of the flow channel 1101 and the projection of the connecting portion 121 are separated from each other.

[0106] The flow channel 1101 is used for the heat exchange medium to flow, so that the heat exchange medium and the structure in the box 10 (such as the battery cell 20) can exchange heat to achieve the purpose of cooling. Optionally, the heat exchange medium can be a liquid medium, such as cooling water, cooling oil, etc.

[0107] Optionally, the flow channel 1101 can be formed by a blowing process, that is, the bottom plate 110 can be a blowing cold plate formed by the blowing process. According to the process of the blowing cold plate, the weight of the blowing cold plate is small, so using the blowing cold plate as the bottom plate 110 can reduce the overall weight of the box 10.

[0108] It is understandable that the bottom plate 110 may also be a brazed cold plate formed by a stamping process, as shown in FIG. Figure 6 As shown; Figure 6 The bottom plate 110 shown in does not include the flow channel 1101, so that the bottom plate 110 can satisfy the mounting beam 120 with the connecting portion 121 having a larger surface area; alternatively, Figure 6 The bottom plate 110 may be, but is not limited to, applicable Figure 5 , Figure 7 , Fig. 9 , Fig.10 The mounting beam 120 in the embodiment of the present invention or the mounting beam 120 of other structures.

[0109] Such an arrangement can separate the flow channel 1101 and the connection portion 121 in the thickness direction of the bottom plate 110 , thereby reducing the force between the connection portion 121 and the bottom plate 110 that may cause damage to the flow channel 1101 .

[0110] For example, in some specific embodiments, the box body 10 includes a bottom plate 110 and a mounting beam 120, the bottom plate 110 is preferably a blown cold plate, and a flow channel 1101 is formed on the bottom plate 110 by a blowing process; the mounting beam 120 includes a beam body 122 and a connecting portion 121, the connecting portion 121 is a fin, and the beam body 122 is integrally formed with a plurality of fins on a side facing the bottom plate 110, and the plurality of fins are arranged at intervals along the length direction L of the beam body 122; the fins can be rectangular fins, and the fins extend out of the range of the beam body 122 in a direction parallel to the outer wall surface 111 and perpendicular to the length direction L of the beam body 122; when assembling, the beam body 122 is installed along the bottom plate 110. 10 is arranged along the central axis a, and each fin is respectively attached to the outer wall surface 111 of the base plate 110 and spot-welded to form a whole, wherein the portion where the fin is attached to the outer wall surface 111 needs to avoid the flow channel 1101 formed on the base plate 110, for example, the fin can be attached to the gap between the flow channels 1101, or the area around the flow channel 1101, etc.; at this time, a gap is formed between the beam body 122 and the outer wall surface 111, so that the beam body 122 can avoid the flow channel 1101; the connection between the fin and the base plate 110 can disperse the stress between the base plate 110 and the mounting beam 120, which can effectively reduce the risk of fracture between the base plate 110 and the mounting beam 120.

[0111] According to some embodiments of this application, please refer to Figure 2 In the second aspect, the embodiment of the present application further provides a battery 100, including a battery cell 20 and the above-mentioned box body 10, wherein the battery cell 20 is located in the box body 10. The battery 100 provided in the embodiment of the present application includes the above-mentioned box body 10, and the overall structure of the battery 100 is more stable when the risk of fracture between the mounting beam 120 and the bottom plate 110 of the box body 10 is low.

[0112] According to some embodiments of this application, please refer to Figure 1 In a third aspect, the present application also provides an electric device, including a main body and the battery 100 as described above, wherein the box 10 of the battery 100 is arranged on the main body, and the battery 100 is used to provide electric energy. The electric device can be any electric device introduced in the above embodiment, such as a vehicle 1000, which will not be described in detail here.

[0113] The electrical equipment provided in the embodiment of the present application includes the above-mentioned battery 100. When the overall structure of the battery 100 is more stable, the process of the battery 100 being arranged on the main body and providing electrical energy to the main body is more stable, and the risk of the battery 100 falling off the main body is lower.

[0114] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A box body, used to be installed on the main body of an electrical device, characterized in that: include: a bottom plate having an outer wall surface; as well as A mounting beam is used to connect the main body, the mounting beam comprises a connecting portion, the connecting portion is configured to be connected to the bottom plate, and at least a portion of the connecting portion is in contact with the outer wall surface.

2. The box according to claim 1, characterized in that: The mounting beam further comprises a beam body, wherein the beam body is used to be connected to the main body, and the connecting portion is arranged on the beam body.

3. The box according to claim 2, characterized in that: The connecting portion extends outward from the beam body and exceeds the beam body.

4. The box according to claim 2 or 3, characterized in that: The beam body is spaced apart from the outer wall surface.

5. The box according to any one of claims 2 to 4, characterized in that: The beam body is provided with a mounting structure, and the beam body is configured to be connected to the main body through the mounting structure; along the thickness direction of the bottom plate, the projection of the mounting structure is located within the projection of the connecting portion.

6. The box according to claim 2 or 3, characterized in that: The beam body is in contact with the outer wall surface.

7. The box according to any one of claims 2 to 6, characterized in that: The entirety of the connecting portion is configured to be symmetrically arranged about the central axis of the beam body.

8. The box according to any one of claims 2 to 7, characterized in that: The bottom plate is provided with the beam body along its central axis.

9. The box according to any one of claims 1 to 8, characterized in that: There are multiple connecting parts, and the multiple connecting parts are arranged at intervals.

10. The box according to claim 1, characterized in that: The mounting beam also includes a beam body, the portion of the beam body facing the outer wall surface forms the connecting portion, and the portion of the beam body facing away from the outer wall surface forms a mounting portion, the mounting portion is used to connect the main body, and along the thickness direction of the base plate, the projection of the mounting portion is located within the projection of the connecting portion.

11. The box according to any one of claims 1 to 10, characterized in that: The bottom plate is provided with a flow channel, and the flow channel contains a heat exchange medium. Along the thickness direction of the bottom plate, the projection of the flow channel and the projection of the connecting portion are separated from each other.

12. A battery, characterized in that The invention comprises a battery cell and a box body as claimed in any one of claims 1 to 11, wherein the battery cell is located in the box body.

13. An electrical equipment, characterized in that: It comprises a main body and the battery as claimed in claim 12, wherein the housing of the battery is arranged on the main body, and the battery is used for providing electrical energy.

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