Box body, battery and electric device

Abstract

The utility model discloses a box body, a battery and an electric device. The box body comprises a frame body, a cross beam and a reinforcing component. The frame body is provided with an accommodating space for accommodating the battery monomer, and comprises a first beam body; the cross beam is arranged in the accommodating space and used for limiting the displacement of the battery monomers, and the extension direction of the cross beam intersects with the extension direction of the first beam body. The two ends of the reinforcing component are connected with the first beam body and the cross beam respectively, a first supporting wall is arranged at the end, facing the first beam body, of the reinforcing component, and the first supporting wall is connected with the first beam body and attached to the first beam body. The reinforcing member is arranged between the frame body and the cross beam, so that the connection strength and the structural stability between the cross beam and the frame body can be improved, and side impact and vibration borne by the frame body can be transmitted to the cross beam. By arranging the first supporting wall, the attaching area of the reinforcing component and the frame body is increased, the bearing capacity of the reinforcing component is improved, and the structural stability of the whole box body is improved.

Description

Technical Field

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

[0002] Battery cells are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, and energy storage systems, etc. Battery cells can include nickel-cadmium battery cells, nickel-hydrogen battery cells, lithium-ion battery cells, sodium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] With the development of new energy technology, how to improve the impact resistance of the box is also one of the research issues in this field. Utility Model Content

[0004] In view of the above problems, the present application provides a box, a battery and an electrical device, which can improve the impact resistance of the battery box.

[0005] In a first aspect, the present application provides a box body, comprising a frame body, a crossbeam, and a reinforcing member. The frame body has a storage space for accommodating a battery cell, and the frame body comprises a first beam body. The crossbeam is arranged in the storage space, and the crossbeam is used to limit the displacement of the battery cell, and the extension direction of the crossbeam intersects with the extension direction of the first beam body. The two ends of the reinforcing member are respectively connected to the first beam body and the crossbeam, and the end of the reinforcing member facing the first beam body has a first support wall, and the first support wall is connected to the first beam body and fits the first beam body.

[0006] In the technical solution of the embodiment of the present application, a frame is provided to provide a storage space for the battery cell. The crossbeam is arranged in the frame, which improves the overall structural strength of the frame and can limit the displacement of the battery cell caused by deformation. The reinforcing member is arranged between the frame and the crossbeam, which can further improve the connection strength and structural stability between the crossbeam and the frame, and can transfer the impact on the frame to the crossbeam. Among them, by providing the first support wall, the area where the reinforcing member fits with the frame is increased, the bearing capacity of the reinforcing member is improved, and the structural stability of the overall box is improved.

[0007] In some embodiments, a first reinforcing rib is provided in the reinforcing member, and the first reinforcing rib extends along the first beam toward the cross beam. In the above technical solution, by providing the first reinforcing rib, the impact on the frame is transmitted to the cross beam, so that the assembly and load transfer of the whole vehicle are realized, and the first reinforcing rib can reduce stress concentration, disperse the load impact force, and protect the structure or components inside the box.

[0008] In some embodiments, the reinforcing member includes a side wall portion and a second supporting wall. There are two side wall portions, and the two side wall portions are arranged on both sides of the first supporting wall. The side wall portions extend along the first beam body toward the cross beam, and the first reinforcing rib is arranged between the two side wall portions. The second supporting wall is connected to the two side wall portions, and the second supporting wall is connected to the cross beam. In the above structure, by setting the second supporting wall, the connection strength between the reinforcing member and the cross beam can be improved. The side wall portion is arranged to connect the first supporting wall and the second supporting wall, and they are enclosed with each other to form a stable structure, thereby improving the overall structural strength of the reinforcing member and the impact resistance.

[0009] In some embodiments, the second support wall is concave and forms a weight-reducing cavity. The above structure can improve the structural strength of the reinforcing member while reducing the volume and weight of the reinforcing member, thereby improving the energy density of the battery.

[0010] In some embodiments, the reinforcing member further comprises a second reinforcing rib connected between the two side wall portions. In the above structure, the second reinforcing rib is provided to improve the structural stability of the two side wall portions.

[0011] In some embodiments, the box body further includes a support plate, the support plate has a first surface, the frame body and the reinforcing member are arranged on the first surface, and the support plate is used to support the battery cell. The above structure provides support for the battery cell by arranging the support plate, thereby improving the stability of the battery operation. In addition, the reinforcing member is connected to the support plate, which further improves the stability of the connection between the reinforcing member and the box body, distributes part of the load to the support plate, improves the load transfer capacity, and improves the protection performance.

[0012] In some embodiments, a reinforcing hole is provided at the intersection of the first reinforcing rib and the second reinforcing rib, and the reinforcing member further comprises a reinforcing bolt, which is used to pass through the reinforcing hole and connect to the support plate. In the above structure, by providing the reinforcing bolt, the connection strength between the reinforcing member and the support plate is improved, the load transmission is improved, and the protection performance is improved.

[0013] In some embodiments, along the thickness direction of the support plate, the first support wall has a first edge away from the support plate, the second support wall has a second edge away from the support plate, and along the thickness direction of the support plate, the first edge is higher or lower than the second edge. The reinforcing member also includes a connecting wall, the connecting wall connects the first edge and the second edge, and at least a portion of the connecting wall is inclined relative to the support plate. In the above technical solution, by providing the connecting wall, the side collision load of the frame is transmitted and dispersed inwardly, which reduces the risk of inversion of the box due to the height difference between the internal and external structures under side collision conditions, and improves the structural stability of the box.

[0014] In some embodiments, the first edge of the first support wall extends upward and protrudes from the surface of the connecting wall away from the support plate to form a mounting portion, and the connecting hole is provided in the mounting portion. In the above structure, the space for installing the blind rivet is increased, and the assembly efficiency of the reinforcing member is improved.

[0015] In some embodiments, the reinforcing member further comprises a blind rivet, the mounting portion is provided with a connecting hole, the blind rivet passes through the connecting hole and is connected to the first beam body. The above structure improves the installation efficiency of the reinforcing member.

[0016] In some embodiments, the connecting wall is provided with a fixing hole, and the fixing hole is used to fix the functional components of the battery. By setting the fixing hole, the space on the reinforcing member is fully utilized, and the functional components in the battery can be fixed on the reinforcing member, thereby improving the operating stability of the functional components and the convenience of assembly.

[0017] In a second aspect, the present application provides a battery, which includes the box body in the above embodiment.

[0018] In a third aspect, the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Figure 1 A schematic diagram of the structure of a vehicle according to an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the exploded structure of a battery according to an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of a battery cell according to an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of a box according to an embodiment of the present application;

[0025] Figure 5 This is a schematic structural diagram of a reinforcing member according to an embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of a reinforcing member according to an embodiment of the present application;

[0027] Figure 7 This is a bottom view structural diagram of a reinforcing member according to an embodiment of the present application;

[0028] Figure 8 This is a schematic top view of the structure of a reinforcing member according to an embodiment of the present application.

[0029] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0030] 1. Vehicle; 2. Battery; 10. Electrode assembly; 20. Shell; 30. End cover; 40. Outer shell; 3. Controller; 4. Motor; 5. Box; 51. First part; 52. Second part; 53. Accommodation space; 501. Frame; 502. Beam; 503. First beam body; 504. Support plate; 6. Reinforcement member; 601. First support wall; 602. First reinforcing rib; 603. Side wall; 604. Second support wall; 605. Weight reduction cavity; 606. Second reinforcing rib; 607. Reinforcement hole; 608. First edge; 609. Second edge; 610. Connecting wall; 611. Connecting hole; 612. Mounting part; 613. Fixing hole; 7. Battery cell. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle provided for one embodiment of the present application. Vehicle 1 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 2 is provided inside the vehicle 1, and the battery 2 may be provided at the bottom, head or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1, for example, the battery 2 may be used as an operating power source for the vehicle 1. The vehicle 1 may also include a controller 3 and a motor 4, and the controller 3 is used to control the battery 2 to power the motor 4, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0040] In some embodiments of the present application, the battery 2 can be used not only as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0041] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0042] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery provided in one embodiment of the present application. The battery 2 includes a box body 5 and a battery cell 7, and the battery cell 7 is accommodated in the box body 5. The box body 5 is used to provide an accommodating space 53 for the battery cell 7, and the box body 5 can adopt a variety of structures.

[0043] In some optional embodiments, the box body 5 includes a first part 51 and a second part 52, the first part 51 and the second part 52 cover each other, and the first part 51 and the second part 52 jointly define a storage space 53 for accommodating the battery cell 7. The second part 52 can be a hollow structure with one end open, and the first part 51 can be a plate-like structure, and the first part 51 covers the open side of the second part 52, so that the first part 51 and the second part 52 jointly define the storage space 53; the first part 51 and the second part 52 can also be hollow structures with one side open, and the open side of the first part 51 covers the open side of the second part 52. Of course, the box body 5 formed by the first part 51 and the second part 52 can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0044] In some embodiments, the box 5 can be used as part of the chassis structure of the vehicle 1. For example, part of the box 5 can become at least a part of the floor of the vehicle 1, or part of the box 5 can become at least a part of the cross beam and longitudinal beam of the vehicle 1.

[0045] In some embodiments, the first part 51 or the second part 52 may include a frame and a cover plate, and the frame includes a plurality of beam structures.

[0046] In the battery 2, there can be multiple battery cells 7, and the multiple battery cells 7 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 7 are both connected in series and in parallel. The multiple battery cells 7 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 7 is accommodated in the box 5. Of course, the battery 2 can also be a battery module formed by connecting multiple battery cells 7 in series, in parallel, or in mixed connection, and then the multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 5. The battery 2 can also include other structures, for example, the battery 2 can also include a converging component for realizing the electrical connection between the multiple battery cells 7.

[0047] Each battery cell 7 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 7 may be cylindrical, flat, rectangular or in other shapes.

[0048] Please refer to Figure 3 , Figure 3 The schematic diagram of the structure of a battery cell 7 provided in one embodiment of the present application. The battery cell 7 refers to the smallest unit constituting the battery 2. Figure 3 The battery cell 7 includes a housing 40, an electrode assembly 10 and other functional components.

[0049] The housing 40 may include an end cover 30 and a housing 20. The end cover 30 is a component that covers the opening of the housing 20 to isolate the internal environment of the battery cell 7 from the external environment.

[0050] The electrode assembly 10 is a component in the battery cell 7 where electrochemical reactions occur. One or more electrode assemblies 10 may be included in the housing 20. The electrode assembly 10 includes a positive electrode sheet, a negative electrode sheet, and a separator. During the charge and discharge process of the battery cell 7, active ions (such as lithium ions) are embedded and removed back and forth between the positive electrode sheet and the negative electrode sheet. The separator is arranged between the positive electrode sheet and the negative electrode sheet, which can prevent the positive and negative electrodes from short-circuiting and allow active ions to pass through. In some embodiments, the battery cell 7 also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present application does not have specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid. In some embodiments, the electrode assembly 10 is a winding structure. Optionally, the electrode assembly 10 is a laminated structure.

[0051] The battery cells are installed on the vehicle through the box. During the driving process of the vehicle, collision or vibration may occur. After being subjected to force, the battery in the box may be deformed or ruptured, causing failure. In more serious cases, the battery cells may explode and cause a series of safety accidents. Therefore, improving the stability of the box can ensure the stable operation of the battery cells on the one hand, and improve the safety of the vehicle during driving on the other hand.

[0052] In the face of the above problems, the related technology uses aluminum profiles and die-cast brackets to strengthen the bearing capacity of the frame of the box and the inner cavity of the box, thereby protecting the overall structure of the box. When assembling aluminum profiles and load-bearing surfaces, more die-cast brackets are usually used to enhance the overall structural strength. Too many die-cast brackets result in more dimensional chains and complex structures when assembling profiles. In addition, the processing technology of extruded aluminum limits the cross-sectional structure and cannot cope with the complex working conditions of side collisions. However, if a reinforcing beam is not used, the structural strength of the box will be too low, and deformation will occur during vibration or collision, causing battery pack failure.

[0053] Based on the above situation, an embodiment of the present application provides a box body, in which a reinforcing member is arranged in the frame body. Among them, by setting the frame body, a storage space is provided for the battery cell. The crossbeam is arranged in the frame body, which improves the overall structural strength of the frame body, and at the same time can limit the displacement of the battery cell caused by deformation. The reinforcing member is arranged between the frame body and the crossbeam, which can further improve the connection strength and structural stability between the crossbeam and the frame body, and can transfer the impact on the frame body to the crossbeam. Among them, by setting the first support wall, the area where the reinforcing member fits with the frame body is increased, the bearing capacity of the reinforcing member is improved, and the structural stability of the overall box body is improved.

[0054] The box of this application is described in detail below with reference to the accompanying drawings. Figures 4 to 8 , Figure 4 This is a schematic structural diagram of a box body according to an embodiment of the present application. Figure 5 This is a schematic structural diagram of a reinforcing component according to an embodiment of the present application. Figure 6 This is a schematic diagram of the three-dimensional structure of a reinforcing component according to an embodiment of the present application. Figure 7 This is a bottom view structural diagram of a reinforcing member according to an embodiment of the present application. Figure 8 This is a schematic top view of the structure of a reinforcing member according to an embodiment of the present application.

[0055] like Figures 4 to 6As shown, the box body 5 of the embodiment of the present application includes a frame body 501, a crossbeam 502 and a reinforcing member 6. The frame body 501 has a receiving space 53 for receiving the battery cell 7, and the frame body 501 includes a first beam body 503. The crossbeam 502 is arranged in the receiving space 53, and the crossbeam 502 is used to limit the displacement of the battery cell 7, and the extension direction of the crossbeam 502 intersects with the extension direction of the first beam body 503. The two ends of the reinforcing member 6 are respectively connected to the first beam body 503 and the crossbeam 502, and the end of the reinforcing member 6 facing the first beam body 503 has a first support wall 601, and the first support wall 601 is connected to the first beam body 503 and fits the first beam body 503.

[0056] Optionally, the reinforcing member 6 is manufactured by a semi-solid die-casting process to improve the structural strength and manufacturing efficiency of the reinforcing member 6. The box body 5 may also include other components, such as a cover plate, a sealing member, etc. The reinforcing member 6 may be connected to the first beam body 503 and the cross beam 502 by welding, riveting or bolting, and the structure and shape of the first support wall 601 may be set according to the structural surface inside the first beam body 503 to improve the fit between the first support wall 601 and the first beam body 503.

[0057] The box body 5 of the embodiment of the present application provides a storage space 53 for the battery cell 7 by setting a frame body 501. The crossbeam 502 is arranged in the frame body 501, which improves the overall structural strength of the frame body 501 and can limit the displacement of the battery cell 7 caused by deformation. The reinforcing member 6 is arranged between the frame body 501 and the crossbeam 502, which can further improve the connection strength and structural stability between the crossbeam 502 and the frame body 501, and can transfer the impact on the frame body 501 to the crossbeam 502. Among them, by setting the first support wall 601, the area where the reinforcing member 6 fits with the frame body 501 is increased, the bearing capacity of the reinforcing member 6 is improved, and the structural stability of the overall box body 5 is improved.

[0058] In some optional embodiments, the reinforcing member 6 is disposed on a side of the cross beam 502 away from the accommodating space 53. The above structure can reduce the space occupied by the reinforcing member 6, provide more space for the battery cell 7, and improve the energy density of the battery 2.

[0059] In some embodiments of the present application, a first reinforcing rib 602 is provided in the reinforcing member 6, and the first reinforcing rib 602 extends along the first beam 503 toward the cross beam 502. In the above technical solution, by providing the first reinforcing rib 602, the impact on the frame 501 is transmitted to the cross beam 502, so that the assembly and load transfer of the whole vehicle are realized, and the first reinforcing rib 602 can reduce stress concentration, disperse the load impact force, and protect the structure or components inside the box 5.

[0060] In some optional embodiments, the number of the first reinforcing ribs 602 is two. The two first reinforcing ribs 602 can be parallel to each other, or the two reinforcing ribs can be arranged at a certain angle to each other. The above structure can be arranged according to the mechanical simulation calculation structure of the box body 5 structure, so as to better disperse the transmission of external collision or vibration to the inside of the frame body 501 structure and reduce the damage to the battery 2.

[0061] In some embodiments of the present application, the reinforcing member 6 includes a side wall portion 603 and a second supporting wall 604. There are two side wall portions 603, and the two side wall portions 603 are arranged on both sides of the first supporting wall 601. The side wall portions 603 extend along the direction of the first beam body 503 toward the cross beam 502, and the first reinforcing rib 602 is arranged between the two side wall portions 603. The second supporting wall 604 is connected to the two side wall portions 603, and the second supporting wall 604 is connected to the cross beam 502. In the above structure, by providing the second supporting wall 604, the connection strength between the reinforcing member 6 and the cross beam 502 can be improved. The side wall portion 603 is provided to connect the first supporting wall 601 and the second supporting wall 604, and enclose each other to form a stable structure, thereby improving the overall structural strength and impact resistance of the reinforcing member 6.

[0062] like Figure 7 as well as Figure 8 As shown, in some embodiments of the present application, the second support wall 604 is concave and forms a weight-reducing cavity 605. The above structure can improve the structural strength of the reinforcing member 6 while reducing the volume and weight of the reinforcing member 6, thereby improving the energy density of the battery 2.

[0063] In some embodiments of the present application, the reinforcing member 6 further includes a second reinforcing rib 606 connected between the two side wall portions 603. In the above structure, the second reinforcing rib 606 is provided to improve the structural stability of the two side wall portions 603.

[0064] In some optional embodiments, there are multiple second reinforcing ribs 606. Multiple second reinforcing ribs 606 are arranged between the first support wall 601 and the second support wall 604. Providing multiple second reinforcing ribs 606 can better provide structural support for the two side wall portions 603. Optionally, multiple second reinforcing ribs 606 are arranged parallel to each other.

[0065] In some embodiments of the present application, the box 5 further includes a support plate 504, the support plate 504 has a first surface, the frame 501 and the reinforcing member 6 are arranged on the first surface, and the support plate 504 is used to support the battery cell 7. The above structure provides support for the battery cell 7 by setting the support plate 504, thereby improving the stability of the operation of the battery 2. In addition, the reinforcing member 6 is connected to the support plate 504, which further improves the stability of the connection between the reinforcing member 6 and the box 5, distributes part of the load to the support plate 504, improves the load transfer capacity, and improves the protection performance.

[0066] In some optional embodiments, along the thickness direction of the support plate 504, the cross-section of the first reinforcing rib 602 or the second reinforcing rib 606 is arched, and the arch is a structure that is thick in the middle and thin on both sides. In the above structure, the arched reinforcing rib can improve the bearing capacity of the reinforcing member 6 and improve the structural stability of the box body 5.

[0067] In some embodiments of the present application, a reinforcement hole 607 is provided at the intersection of the first reinforcement rib 602 and the second reinforcement rib 606, and the reinforcement member 6 further includes a reinforcement bolt, which is used to pass through the reinforcement hole 607 and connect to the support plate 504. In the above structure, by providing the reinforcement bolt, the connection strength between the reinforcement member 6 and the support plate 504 is improved, the load transmission is improved, and the protection performance is improved.

[0068] In some embodiments of the present application, along the thickness direction of the support plate 504, the first support wall 601 has a first edge 608 away from the support plate 504, and the second support wall 604 has a second edge 609 away from the support plate 504. Along the thickness direction of the support plate 504, the first edge 608 is higher or lower than the second edge 609. The reinforcing member 6 further includes a connecting wall 610, the connecting wall 610 connects the first edge 608 and the second edge 609, and at least a portion of the connecting wall 610 is inclined relative to the support plate 504.

[0069] Exemplarily, the thickness of the first beam body 503 is greater than the thickness of the cross beam 502. The heights of the first support wall 601 and the second support wall 602 are respectively set according to the thickness of the first beam body 503 and the cross beam 502. Therefore, the height dimension of the first support wall 601 along the thickness direction of the support plate 504 is greater than the height dimension of the second support wall 604 along the thickness direction of the support wall, and the connecting wall 610 extends from the first edge 608 toward the second edge 609, forming an oblique downward extension direction. In addition, both sides of the connecting wall 610 are respectively connected to the two side walls.

[0070] In the above technical solution, by setting the connecting wall 610, the side collision load of the frame 501 is transmitted and dispersed inwardly, which reduces the risk of inward turning of the box 5 due to the height difference between the internal and external structures under side collision conditions and improves the structural stability of the box 5.

[0071] In some embodiments of the present application, the first edge 608 of the first support wall 601 extends upward and protrudes from the surface of the connecting wall 610 on one side away from the support plate 504 to form a mounting portion 612, and the connecting hole 611 is provided in the mounting portion 612. In the above structure, the space for installing the blind rivet is increased, and the assembly efficiency of the reinforcing member 6 is improved.

[0072] In some embodiments of the present application, the reinforcing member 6 further includes a blind rivet, and a connecting hole 611 is provided on the mounting portion 612. The blind rivet passes through the connecting hole 611 and is connected to the first beam body 503. The above structure improves the installation efficiency of the reinforcing member 6.

[0073] In some embodiments of the present application, the connecting wall 610 is provided with a fixing hole 613, and the fixing hole 613 is used to fix the functional components of the battery 2. Exemplarily, the functional components include a high-voltage box, a control device, etc. By setting the fixing hole 613 to fully utilize the space on the reinforcing member 6, the functional components in the battery 2 can be fixed on the reinforcing member 6, thereby improving the operating stability of the functional components and the convenience of assembly.

[0074] The embodiment of the present application provides a battery 2, which includes the box 5 in the above embodiment. The embodiment of the present application also provides an electrical device, which includes the battery 2 in the above embodiment, and the battery 2 is used to provide electrical energy. The battery 2 and the electrical device in the embodiment of the present application both include a box 5, and the box 5 provides a storage space 53 for the battery cell 7 by setting a frame 501. The crossbeam 502 is arranged in the frame 501, which improves the overall structural strength of the frame 501 and can limit the displacement of the battery cell 7 caused by deformation. The reinforcing member 6 is arranged between the frame 501 and the crossbeam 502, which can further improve the connection strength and structural stability between the crossbeam 502 and the frame 501, and can transfer the impact on the frame 501 to the crossbeam 502. Among them, by setting the first support wall 601, the area where the reinforcing member 6 fits with the frame 501 is increased, the bearing capacity of the reinforcing member 6 is improved, and the structural stability of the overall box 5 is improved.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A box (5), characterized in that: include: A frame body (501) having a receiving space (53) for receiving a battery cell (7), wherein the frame body (501) comprises a first beam body (503); a crossbeam (502), the crossbeam (502) being arranged in the accommodating space (53), the crossbeam (502) being used to limit the displacement of the battery cell (7), and the extension direction of the crossbeam (502) intersecting with the extension direction of the first beam body (503); A reinforcing member (6) has two ends respectively connected to the first beam body (503) and the cross beam (502); one end of the reinforcing member (6) facing the first beam body (503) has a first supporting wall (601); the first supporting wall (601) is connected to the first beam body (503) and adheres to the first beam body (503).

2. The box (5) according to claim 1, characterized in that: A first reinforcing rib (602) is provided in the reinforcing member (6), and the first reinforcing rib (602) extends along the first beam body (503) in a direction toward the cross beam (502).

3. The box (5) according to claim 2, characterized in that: The reinforcing member (6) comprises: There are two side wall portions (603), the two side wall portions (603) are arranged on both sides of the first supporting wall (601), the side wall portions (603) extend along the first beam body (503) toward the cross beam (502), and the first reinforcing rib (602) is arranged between the two side wall portions (603); The second supporting wall (604) is connected to the two side wall portions (603), and the second supporting wall (604) is connected to the crossbeam (502).

4. The box (5) according to claim 3, characterized in that: The second supporting wall (604) is concave and forms a weight-reducing cavity (605).

5. The box (5) according to claim 3 or 4, characterized in that: The reinforcing member (6) further comprises a second reinforcing rib (606) connected between the two side wall portions (603).

6. The box (5) according to claim 5, characterized in that: The box body (5) further comprises a support plate (504), the support plate (504) having a first surface, the frame body (501) and the reinforcing member (6) being arranged on the first surface, and the support plate (504) being used for supporting the battery cell (7).

7. The box (5) according to claim 6, characterized in that: A reinforcement hole (607) is provided at the intersection of the first reinforcement rib (602) and the second reinforcement rib (606), and the reinforcement member (6) further comprises a reinforcement bolt, which is used to pass through the reinforcement hole (607) and be connected to the support plate (504).

8. The box (5) according to claim 6, characterized in that: Along the thickness direction of the support plate (504), the first support wall (601) has a first edge (608) away from the support plate (504), the second support wall (604) has a second edge (609) away from the support plate (504), and along the thickness direction of the support plate (504), the first edge (608) is higher or lower than the second edge (609); The reinforcing member (6) further comprises a connecting wall (610), wherein the connecting wall (610) connects the first edge (608) and the second edge (609), and at least a portion of the connecting wall (610) is arranged to be inclined relative to the supporting plate (504).

9. The box (5) according to claim 8, characterized in that: The first edge (608) of the first supporting wall (601) extends upward and protrudes from a surface of a side of the connecting wall (610) away from the supporting plate (504) to form a mounting portion (612), and the connecting hole (611) is provided on the mounting portion (612).

10. The box (5) according to claim 9, characterized in that: The reinforcing member (6) further comprises a blind rivet, and a connecting hole (611) is provided on the mounting portion (612). The blind rivet passes through the connecting hole (611) and is connected to the first beam body (503).

11. The box (5) according to claim 8, characterized in that: The connecting wall (610) is provided with a fixing hole (613), and the fixing hole (613) is used to fix the functional components of the battery (2).

12. A battery (2), characterized in that: It comprises a box (5) as claimed in any one of claims 1 to 11.

13. An electrical device, characterized in that: The electrical device comprises the battery (2) as claimed in claim 12, and the battery (2) is used to provide electrical energy.

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