Box body, battery and electric device

Abstract

The utility model discloses a box body, a battery and a power utilization device, the box body comprises a first beam and a supporting piece, the first beam defines an accommodating space of the box body, the supporting piece is arranged on the first beam, and the supporting piece is arranged in the accommodating space; according to the box body provided by the embodiment of the invention, the supporting piece is arranged in the accommodating space, under the condition that the appearance of the box body is not changed, the first beam and an object in the accommodating space jointly bear impact of external force through the supporting piece, and the external force extrusion resistance of the first beam is improved.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] When the vehicle is hit externally, the battery will also be hit accordingly. At this time, the battery box is the first to be hit and squeezed. When the impact and squeezing reach a certain degree, the box will deform. After the box is deformed, on the one hand, the structural strength decreases, and it cannot effectively protect the battery cells and other components in the box; on the other hand, the deformed structure of the box may also directly damage the battery cells in the box; all of these will affect the safety performance of the battery. Utility Model Content

[0004] In view of the above problems, the present application provides a box, a battery and an electrical device. By arranging a support member in the accommodating space of the box, the box can bear the impact of external force through the support member and the object in the box, thereby improving the structural strength and external force resistance of the box, thereby protecting the normal operation and safety of the battery.

[0005] On the one hand, an embodiment of the present application provides a box body, which is applied to a battery, and the box body includes a first beam and a support member, the first beam encloses a receiving space of the box body, the support member is arranged on the first beam, the support member is arranged in the receiving space, and at least a portion of the support member protrudes from the inner surface of the first beam.

[0006] By arranging the support member in the accommodating space, without changing the outer shape of the box body, the first beam can bear the impact of external force together with the object in the accommodating space through the support member, thereby improving the ability of the first beam to resist external force compression.

[0007] In some embodiments, along the height direction of the box body, the support member is disposed in a middle area of ​​the first beam.

[0008] By arranging the support member in the middle area at the height of the first beam, the ability of the two ends of the box body in the height direction to resist deformation due to external forces is enhanced.

[0009] In some embodiments, at least two support members are included along the width direction of the box body, and the at least two support members are distributed at intervals.

[0010] By arranging a plurality of support members at intervals in the width direction of the first beam, the structural strength of each stress node in the width direction is improved.

[0011] In some embodiments, the support member includes an outer frame and an inner plate. The cavity surrounded by the outer frame includes an opening structure at both ends. The inner plate is arranged in the cavity and is arranged to extend in a direction from one end opening to the other end opening.

[0012] By providing a support member with an outer frame and an inner plate, the inner plate is used to ensure the structural strength of the support member. At the same time, the cavity structure helps to save materials for the support member. The support member is provided with an opening, which is also convenient for processing and manufacturing.

[0013] In some embodiments, the inner panel includes at least two partition panels, and the partition panels are arranged crosswise in the cavity.

[0014] By arranging a plurality of partition plates and placing them crosswise in the outer frame, the partition plates strengthen the deformation resistance of the side surface of the outer frame and also improve the overall structural strength of the support member.

[0015] In some embodiments, the support member includes a base, which is disposed between the first beam and the outer frame, and the base covers an opening structure at one end of the cavity.

[0016] By providing the bottom plate, the contact area between the support member and the first beam is increased, the connection strength between the two is improved, and the outer frame and the inner plate close to the first beam are protected from deformation.

[0017] In some embodiments, the support member includes a first reinforcement member, and the first reinforcement member is configured to be connected to the base and the outer frame respectively.

[0018] By providing the first reinforcing member to simultaneously connect the base and the outer frame of the supporting member, the structural strength of the outer frame in the supporting member is increased, and its ability to resist extrusion deformation is improved, so that the outer frame is not easily deformed or cracked.

[0019] In some embodiments, the box body includes a second beam disposed in the accommodating space, both ends of the second beam are configured to be connected to the first beam, and the support member is configured to be connected to the second beam at at least one end along the width direction of the box body.

[0020] By connecting at least one end of the support member to the second beam, part of the external force is guided to the box through the second beam, which helps to reduce the force transmitted to the accommodating space and improves the support member's ability to resist deformation along the width direction of the box.

[0021] In some embodiments, the box body includes an auxiliary member, which is disposed at a connection between the first beam and the second beam; and / or the auxiliary member is disposed at a connection between two connected first beams.

[0022] The connection strength of the two first beams is strengthened by providing auxiliary parts; and / or the connection strength of the first beam and the second beam is strengthened.

[0023] In some embodiments, the auxiliary member includes a first plate and a second plate that are bent, and the auxiliary member also includes a second reinforcement member, and the second reinforcement member is configured to be connected to the first plate and the second plate respectively.

[0024] The second reinforcing member is provided to connect and support the first plate and the second plate of the auxiliary member, so that the first plate and the second plate are not easily deformed by external force, thereby improving the structural strength of the auxiliary member.

[0025] In some embodiments, the box body further includes a third beam, which is disposed outside the first beam along the width direction of the box body, and a support member is disposed on the first beam along at least one end of the length direction of the box body.

[0026] By arranging a support member on the first beam at at least one end along the length direction of the box body, the first beam is more likely to be squeezed and deformed by external force in the length direction.

[0027] On the other hand, the present application provides a battery, including a box, a plurality of battery cells and an end structure. The plurality of battery cells are arranged into at least one column of battery modules, and the end structure is arranged at both ends of the battery module. The support member is arranged between the first beam and the end structure.

[0028] By arranging the support member between the first beam and the end structure, the external force is weakened along the large surface of the first beam-support member-end structure-battery cell through multiple layers of conduction, thereby reducing the impact of the external force on the battery cell and improving the battery's ability to withstand external force impacts.

[0029] In some embodiments, there is a gap between the end structure and the support member.

[0030] By providing a gap between the end structure and the support member, the gap can absorb the dimensional tolerance when the battery module is installed, which helps to install the battery module and the support member.

[0031] In some embodiments, the battery includes a wiring harness structure and / or a pipe structure, and the wiring harness structure and / or the pipe structure are disposed between the first beam and the end structure.

[0032] By arranging the wiring harness structure, the pipeline structure and the support member between the first beam and the end structure, the strength of the box structure is improved while the battery space utilization is increased.

[0033] In some embodiments, the battery includes a third plate, the third plate is disposed between the support member and the end structure, and the position of the third plate corresponds to the position of the opening structure of the support member.

[0034] By setting a third plate between the support member and the end structure, the contact area during the transmission process is increased, so that the pressure is reduced under the same external force, which is less likely to cause deformation of the support member and the end structure, thereby improving the strength and service life of the support member and the end structure.

[0035] In some embodiments, along the width direction of the box body, the battery includes at least two battery modules, and each battery module is correspondingly provided with at least one supporting member.

[0036] By providing at least one support member on each module, the external force is transmitted in sequence along the first beam, the support member, the battery module, and the first beam on the other side. Other structures of the box help improve the ability of the battery module and its internal battery cells to withstand external impact.

[0037] On the other hand, the present application provides an electrical device, including a battery, wherein the battery is used to provide electrical energy to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0039] Figure 1 A schematic diagram of the structure of an electric device in some embodiments of the present application;

[0040] Figure 2 A schematic diagram of the structure of a battery in some embodiments of the present application;

[0041] Figure 3 This is a schematic diagram of the structure of the box in some embodiments of the present application;

[0042] Figure 4 This is a schematic diagram of the structure of the support member of some embodiments of the present application;

[0043] Figure 5 This is a schematic structural diagram of another box in some embodiments of the present application;

[0044] Figure 6 This is a schematic diagram of the structure of auxiliary components in some embodiments of the present application;

[0045] Figure 7 This is a schematic structural diagram of another box in some embodiments of the present application;

[0046] Figure 8 A schematic diagram of the structure of another battery in some embodiments of the present application;

[0047] Fig. 9A schematic diagram of the structure of another battery in some embodiments of the present application;

[0048] Fig.10 for Fig. 9 A local enlarged view of region I.

[0049] Description of reference numerals:

[0050] Electric device 1, battery 2, controller 3, motor 4;

[0051] Box body 21, battery cell 22, end structure 23, battery module 24, wiring harness structure 25, pipeline structure 26, third plate 27;

[0052] A first beam 211, a second beam 212, a third beam 213, a support member 214, an accommodating space 215, and an auxiliary member 216;

[0053] Outer frame 2141, inner plate 2142, cavity 2143, base 2144, first reinforcement member 2145, partition plate 21421;

[0054] First plate 2161 , second plate 2162 , second reinforcement 2163 . DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] In the description of the embodiments of the present application, technical terms such as "first" and "second" 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.

[0058] 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.

[0059] 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.

[0060] 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).

[0061] 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.

[0062] 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.

[0063] 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.

[0064] When a vehicle is hit externally, the battery will also be hit accordingly. At this time, the battery box is the first to be hit and squeezed. When the impact and squeezing reach a certain degree, the box will deform. After the box is deformed, on the one hand, the structural strength decreases, and it cannot effectively protect the battery cells and other components in the box; on the other hand, the deformed structure of the box may also directly damage the battery cells in the box; all of these will affect the safety performance of the battery.

[0065] Generally, the side beams of a box are the outermost force-bearing components of the box. When a large external force impacts, the side beams are easily squeezed and deformed, causing direct or indirect damage to the battery cells in the box. Therefore, in the embodiment of the present application, support members are arranged on the side beams of the box to improve the structural strength of the side beams, thereby improving the safety performance of the battery.

[0066] The box disclosed in the embodiment of the present application can be used in batteries or other devices that require box protection.

[0067] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0068] For the convenience of description, the following embodiments are described by taking an electrical device 1 according to an embodiment of the present application as an example.

[0069] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the electric device 1 of some embodiments of the present application. The electric device 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The battery 2 can not only be used as an operating power source for the electric device 1, but also as a driving power source for the electric device 1, replacing or partially replacing fuel or natural gas to provide driving power for the electric device 1. When the battery 2 is used as a driving power source, the battery 2 can be arranged at the bottom, head or tail of the electric device 1. The controller 3 is used to control the battery 2 to supply power to the motor 4, and the motor 4 is used to drive the wheels.

[0070] Please refer to Figure 2 , Figure 2 The schematic diagram of the exploded structure of the battery 2 according to some embodiments of the present application is shown in FIG. The battery 2 includes a housing 21 , a battery cell 22 and other components, and the battery cell 22 is accommodated in the housing 21 .

[0071] Among them, the box body 21 can be used to provide a storage space 215 for the battery cell 22 and other components, and the box body 21 can adopt a variety of structures. In some embodiments, the box body 21 may include a first part and a second part, the first part and the second part cover each other, and the first part and the second part jointly define the storage space 215. Optionally, the first part can be a hollow structure with one end open, and the second part can be a plate-like structure, and the second part covers the open side of the first part. Similarly, the first part can be a plate-like structure, and the second part can be a hollow structure. Optionally, the first part and the second part can be hollow structures both with one side open, and the open side of the first part covers the open side of the second part. The box body 21 can be in a variety of shapes, such as a cuboid, a cube, or other irregular shapes.

[0072] There can be multiple battery cells 22, and multiple battery cells 22 can be connected in series, in parallel, or in series and parallel in the box 21 to form a battery 2 with a certain capacity and voltage. Multiple battery cells 22 can be directly connected in series, in parallel, or in series and parallel, and then the whole formed by multiple battery cells 22 is accommodated in the box 21.

[0073] The present application embodiment discloses a box 21, see Figure 3 The box body 21 is applied to the battery 2, and the box body 21 includes a first beam 211 and a support member 214. The first beam 211 surrounds a receiving space 215 of the box body 21. The support member 214 is arranged on the first beam 211, and the support member 214 is arranged in the receiving space 215, and at least part of the support member 214 protrudes from the inner surface of the first beam 211.

[0074] The box body 21 can be made of metal material, which can bear and contain objects in the box body 21 and has good strength to resist external forces. In addition, metal material can be easily processed into various shapes of the box body 21.

[0075] The first beam 211 may be a side beam or a side beam of the box body 21, and the first beam 211 forms a circle as a part of the outer frame of the box body 21. The first beam 211 may be a plate-type or beam-type three-dimensional structure. The first beam 211 may be a material with a certain structural strength, such as metal or carbon fiber. According to the shape of the box body 21, the first beam 211 may include four beams, which are connected in sequence to form a rectangular box body 21; the first beam 211 may also include three or more beams to form a box body of a corresponding shape.

[0076] The support member 214 may be a structural member with a certain strength, which is arranged on the first beam 211 to strengthen the first beam 211. The support member 214 may be arranged on the inner surface of the first beam 211, or a part of the support member 214 may be embedded in the beam structure of the first beam 211 from the inner surface of the first beam 211, so that at least part of the support member 214 may protrude from the inner surface of the first beam 211. The support member 214 may be a block-like support block, or a support rib, a support plate, or other structures that may have a reinforcing or supporting function.

[0077] The accommodation space 215 may be a space in the box body 21 for accommodating the battery cell 22 or other components, and is a box body space structure surrounded by a plurality of first beams 211. The accommodation space 215 may be a regular shape such as a cuboid or a cube, or may be an irregular shape.

[0078] One end of the support member 214 is disposed on the first beam 211, and the other end protrudes from the first beam 211 and extends into the accommodation space 215, and can be close to or in contact with other structural components in the box body 21. When the impact force is transmitted from the side beam 211 to the support member 214, the support member 214 can further transmit and disperse the impact force to other structural components with a small amount of displacement or no displacement, so that the support member 214 can effectively disperse the impact force while strengthening the side beam 211.

[0079] By arranging the support member 214 on the side beam 211 and in the accommodating space 215, the structure of the box body 21 can be strengthened without changing the structure of the box body 21, and the impact force can be effectively dispersed and weakened, thereby improving the structural strength of the box body 21 and improving the safety performance of the battery 2.

[0080] In addition, compared with the design of setting the reinforcement inside the first beam 211, the support member 214 of the embodiment of the present application can minimize the changes to the structure of the first beam 211 or the box body 21, simplify the structure of the box body 21 and the processing technology of the box body 21, and can reduce the weight of the box body 21 to a certain extent to improve the energy density of the battery 2; on the other hand, by setting the support member 214 in the accommodating space 215, the void space in the accommodating space 215 can be fully utilized to improve the space utilization rate of the battery 2.

[0081] In some embodiments, see Figure 3 , along the height direction of the box body 21 , the support member 214 is disposed in the middle area of ​​the first beam 211 .

[0082] like Figure 3 As shown, the height direction of the box body 21 is the same as the height direction of the side beam 211. Figure 3 In addition, the box 21 also includes a length direction and a width direction. The width direction of the box 21 is as shown in FIG. Figure 3As shown in the Y direction, the side beams in the width direction of the box body 21 are provided with support members 214; Figure 3 The length direction is perpendicular to the width direction, and the support member 214 is arranged on the box body 21 and extends in the length direction of the box body 21.

[0083] The middle area may be an area in the middle of the height of the first beam 211 . The support member 214 is disposed on the first beam 211 , and the distances from the highest point and the lowest point of the first beam 211 are substantially the same.

[0084] By arranging the support member 214 in the middle area of ​​the height of the first beam 211, it is avoided that when it is arranged at one end of the height, the other end's ability to resist external forces becomes poor, causing the side beam at the other end to deform, crack, or be squeezed inward. In addition, the upper end of the first beam 211 in the height direction is generally connected to the upper box body of the box body 21, and the lower end is connected to a thermal management structure such as a water cooling plate, so that the upper and lower parts of the first beam 211 in the height direction are structurally supported, and the ability to resist deformation when subjected to force is greater than that of the middle area. The upper and lower parts of the first beam 211 are not easy to deform, so the middle area of ​​the first beam 211 needs to be strengthened. Arranging the support member 214 in the middle area of ​​the height of the first beam 211 helps to improve the strength of both ends of the height of the first beam 211 at the same time.

[0085] In some embodiments, see Figure 3 , along the width direction of the box body 21, includes at least two support members 214, and the at least two support members 214 are distributed at intervals.

[0086] The width direction of the box body 21 may be the Y direction. There may be two or more support members 214 in the width direction of the box body 21 , and the support members 214 may be spaced apart from each other.

[0087] Optionally, the support members 214 are evenly spaced in pairs in the width direction of the box body 21, or the support members 214 are arranged at the same height of the box body 21. Figure 3 As shown, optionally, each support member 214 is provided corresponding to a battery module to prevent deformation of the side beam 211 from causing damage to the battery cells of each battery module.

[0088] The first beam 211 is longer in the width direction of the box body 21. When there is only one support member 214 on the first beam 211, the first beam 211 cannot be effectively supported, and the first beam 211 is easily deformed as a force-bearing structure. By arranging multiple support members 214 at intervals in the width direction of the first beam 211, the support members 214 support and strengthen the first beam 211 at multiple locations.

[0089] In some embodiments, see Figure 4The support member 214 includes an outer frame 2141 and an inner plate 2142. The cavity 2143 surrounded by the outer frame 2141 includes opening structures at both ends. The inner plate 2142 is arranged in the cavity 2143 and is arranged to extend in a direction from the opening structure at one end to the opening structure at the other end.

[0090] The outer frame 2141 may be an outer plate of the support member 214. The outer frame 2141 abuts against the first beam 211, or may be at least partially inside the side beam 211. A cavity 2143 is formed inside the structure enclosed by the outer frame 2141, and both ends of the cavity 2143 are open structures, that is, the outer frame 2141 encloses a cylindrical structure with both ends open. The outer frame 2141 may be a plate-shaped structure, which may be integrally formed, such as by extrusion molding or casting molding, or may be formed by connecting multiple plates by splicing, welding, plugging, etc. The cross-section of the outer frame 2141 may be a symmetrical structure such as a circle, a square, or a rectangle.

[0091] The internal plate 2142 may be a plate disposed within the outer frame 2141 of the support member 214. The internal plate 2142 may be connected to the outer frame 2141 by splicing, welding, plugging, etc., or may be integrally formed together with the outer frame 2141 by extrusion or casting, etc. The internal plate 2142 may be a plate parallel to one side of the outer frame 2141, or may be inclined and not parallel to a plate on any side of the outer frame 2141. The internal plate 2142 is configured to extend in a direction from an opening at one end of the outer frame 2141 toward an opening at the other end. When an external force acts, the internal plate 2142 may transmit the force of the force-bearing opening end to the other end opening, and further transmit it to the force-bearing structure in contact therewith, so as to effectively disperse the external impact force and reduce damage to the battery cell.

[0092] The cavity 2143 may be a hollow cavity surrounded by an outer plate. The outer plate forms the sides of the support member 214, and both ends are open structures. The inner plate 2142 may be disposed in the cavity 2143 of the outer plate.

[0093] By providing a support member 214 with an outer frame 2141 and an inner plate 2142 , the structural strength of the support member 214 can be improved through the inner plate 2142 , and the external impact force can also be effectively dispersed.

[0094] In some embodiments, see Figure 4 The internal plate 2142 includes at least two partition plates 21421 , and the partition plates 21421 are cross-arranged in the cavity 2143 .

[0095] The partition plate 21421 is a part of the inner plate 2142, and a plurality of partition plates 21421 are cross-arranged to form the inner plate 2142. Optionally, the connection between the partition plates 21421 may have a chamfered or rounded corner design, and the connection between the partition plates 21421 and the outer frame 2141 may have a chamfered or rounded corner design.

[0096] Optionally, the inner plate 2142 includes two partition plates 21421, and the two partition plates 21421 are arranged in a cross or X shape inside the outer frame 2141;

[0097] Optionally, the inner plate 2142 includes two partition plates 21421, and the two partition plates 21421 are arranged in an intersecting manner inside the outer frame 2141;

[0098] Optionally, the inner plate 2142 includes a plurality of partition plates 21421 , and any one partition plate 21421 is vertically arranged in the outer frame 2141 with at least another partition plate 21421 ;

[0099] Optionally, the inner plate includes a plurality of partition plates 21421 , and more than three partition plates 21421 are cross-arranged in the outer frame 2141 .

[0100] At least two partition plates 21421 are arranged crosswise in the outer frame 2141. On the one hand, the partition plates 21421 support the side of the outer frame 2141 to improve the deformation resistance of the side of the outer frame 2141. On the other hand, the partition plates 21421 bear the external force from the first beam 211 together with the outer frame 2141, which helps to improve the structural strength and deformation resistance of the support member 214.

[0101] In some embodiments, see Figure 3 and Figure 4 The support member 214 includes a base 2144 , which is disposed between the first beam 211 and the outer frame 2141 , and the base 2144 covers an opening structure at one end of the cavity 2143 .

[0102] The base 2144 is a part of the support 214, and the base 2144 is used to connect the outer frame 2141 of the support 214, the inner plate 2142 and the first beam 211 of the box 21. The base 2144 can be a plate, a block or other structure, and the cross-section of the base 2144 can be a rectangle, a square, a circle or other shapes. The large surface area of ​​the base 2144 can be greater than or equal to the area of ​​the opening structure of the cavity 2143, and can cover the opening structure at one end of the cavity 2143, so that the base 2144 is connected to one end of the outer frame 2141 and the inner plate 2142. The base 2144 can be bolted to the first beam 211 to obtain a greater connection strength, and it is also convenient to disassemble and replace; it can also be connected by glue gluing, rivet fixing, etc. The base 2144 and the outer frame 2141 and the inner plate 2142 can be integrally formed, or they can be composed by splicing, welding, plugging, riveting, bonding, etc.

[0103] By providing the base 2144, the original line-surface connection between the support member 214 and the first beam 211 is changed to a surface-surface connection, thereby increasing the contact area between the two, which helps to strengthen the connection strength between the support member 214 and the first beam 211, and makes the support member 214 more firmly connected to the first beam 211. The larger contact area also helps to resist external forces, protecting the outer frame 2141 and the inner plate 2142 near the first beam 211 from deformation.

[0104] In some embodiments, see Figure 3 and Figure 4 The support member 214 includes a first reinforcement member 2145, and the first reinforcement member 2145 is configured to be connected to the base 2144 and the outer frame 2141 respectively.

[0105] The first reinforcement member 2145 is a part of the support member 214. The first reinforcement member 2145 can be arranged on the base 2144 and connected to the outer frame 2141 to support the outer frame 2141. The first reinforcement member 2145 can be arranged on the outer surface of the outer frame 2141 and is not in direct contact with the inner plate 2142. The first reinforcement member 2145 can be a reinforcement rib, a reinforcement block, a support rib, etc., which plays a supporting role or a role of strengthening the local structure. The first reinforcement member 2145 can be a triangle, and the triangular structure is relatively stable. It can also be designed to be other shapes that fit the surface of the connecting component, such as a trapezoidal, diamond-shaped structure, etc. The first reinforcement member 2145 can be integrally formed with multiple components such as the outer frame 2141, the inner plate 2142, and the base 2144, such as extrusion manufacturing. It can also be fixed to the base 2144 and the outer frame 2141 by welding, plugging, etc.

[0106] Alternatively, if Figure 4As shown, there can be two first reinforcing members 2145, one first reinforcing member 2145 is provided on each side of the outer frame 2141, and both sides provide support force for the outer frame 2141. The two first reinforcing members 2145 are symmetrically arranged, so that the outer frame 2141 is subjected to more uniform force.

[0107] Optionally, there may be multiple first reinforcement members 2145 , and multiple first reinforcement members 2145 may be arranged on both sides of the outer frame 2141 or all around the outer frame 2141 .

[0108] By providing the first reinforcement member 2145 to simultaneously connect the base 2144 and the outer frame 2141 of the support member 214, the structural strength of the outer frame 2141 in the support member 214 is increased, and its ability to resist extrusion and deformation is improved, so that the outer frame 2141 of the support member 214 is not easily deformed or cracked.

[0109] In some embodiments, see Figure 5 The box body 21 includes a second beam 212 disposed in the accommodating space 215 , both ends of the second beam 212 are configured to be connected to the first beam 211 , and a support member 214 is configured to be connected to the second beam 212 along at least one end of the box body 21 in the width direction.

[0110] The second beam 212 may be a part of the box body 21. The second beam 212 is disposed in the accommodating space 215 surrounded by the first beam 211. Both ends of the second beam 212 may be connected to the first beam 211 at the same time. The second beam 212 may be a cross beam, a longitudinal beam, or a cross beam and a longitudinal beam. The second beam 212 and the first beam 211 enclose a smaller space for accommodating the battery cell 22. The second beam 212 may reduce the expansion of the battery cell 22 in the width direction of the box body 21. The second beam 212 may be a structure with reinforcing ribs in the cavity to ensure structural strength while reducing weight. It may also be made of a material with good strength such as metal or carbon fiber.

[0111] Optional, such as Figure 5 As shown, along the width direction of the box body 21 , two ends of the support member 214 are simultaneously connected to the two second beams 212 , or simultaneously connect the second beam 212 and the first beam 211 parallel thereto.

[0112] Optionally, the second beam 212 and the first beam 211 may be substantially parallel. The height of the second beam 212 may be less than or equal to the first beam 211 .

[0113] By connecting at least one end of the support member 214 to the second beam 212, part of the external force on the first beam 211 is guided to the first beam 211 on the other side of the box body 21 through the second beam 212, which helps to reduce the force transmitted to the accommodating space 215. At the same time, both sides of the support member 214 are directly supported by two second beams 212 or one first beam 211 and one second beam 212, so that the outer frame 2141 of the support member 214 is not easy to deform to both sides in the width direction of the box body 21, thereby improving the structural strength of the support member 214.

[0114] In some embodiments, see Figure 3 and Figure 6 The box body 21 includes an auxiliary member 216, and the auxiliary member 216 is arranged at the connection between the first beam 211 and the second beam 212; and / or the auxiliary member 216 is arranged at the connection between the two connected first beams 211.

[0115] The auxiliary part 216 can be a part of the box body 21. The auxiliary part 216 can be connected to the first beam 211 and the second beam 212 by bolts to improve the connection strength and facilitate disassembly. It can also be connected by gluing without other connecting parts to save space.

[0116] An auxiliary member 216 is provided to connect the two first beams 211 to support the two first beams 211 , thereby strengthening the connection strength of the two first beams 211 ; an auxiliary member 216 may also be provided to connect the first beam 211 and the second beam 212 to strengthen the connection strength of the first beam 211 and the second beam 212 .

[0117] In some embodiments, see Figure 3 and Figure 6 The auxiliary member 216 includes a first plate 2161 and a second plate 2162 that are bent, and the auxiliary member 216 also includes a second reinforcement member 2163, and the second reinforcement member 2163 is configured to be connected to the first plate 2161 and the second plate 2162 respectively.

[0118] The first plate 2161 and the second plate 2162 are part of the auxiliary member 216. The first plate 2161 can be connected to the first beam 211, and the second plate 2162 can be connected to the second beam 212 or the first beam 211. Similarly, the second plate 2162 can be connected to the first beam 211, and the first plate 2161 can be connected to the second beam 212 or the first beam 211. The first plate 2161 and the second plate 2162 can be large surfaces, and the plane-to-plane connection helps to improve the connection strength, thereby more firmly connecting the first beam 211 and the second beam 212. The first plate 2161 and the second plate 2162 can be connected to the first beam 211 or the second beam 212 by bolts, or can be fixed by gluing. Optionally, as shown in the figure, the first plate 2161 and the second plate 2162 can be directly connected, or indirectly connected through the middle part, and the middle part forms a space with the first beam 211 and the second beam 212 to avoid the welding marks of the first beam 211 and the second beam 212.

[0119] The second reinforcement 2163 is a part of the auxiliary member 216, and the second reinforcement 2163 connects the first plate 2161 and the second plate 2162 at the same time. The second reinforcement 2163 can be a reinforcement rib, a reinforcement block, a support rib, etc., which plays a supporting role or a role of local structural reinforcement. The second reinforcement 2163 can be connected to the first plate 2161 and the second plate 2162 by bolts, or can be fixed to the first plate 2161 and the second plate 2162 by welding, plugging, etc. The second reinforcement 2163 can be arranged in the middle area of ​​the first plate 2161 and the second plate 2162 to achieve uniform force. The second reinforcement 2163 can be set as one or more to play a stronger supporting role. Optionally, as shown in the figure, the second reinforcement 2163 can be a trapezoid, and the two sides of the trapezoid fit the first plate 2161 and the second plate 2162. The second reinforcement 2163 can be substantially perpendicular to the first plate 2161 and the second plate 2162.

[0120] By providing the second reinforcement 2163 to simultaneously connect and support the first plate 2161 and the second plate 2162, when the auxiliary component 216 is squeezed by an external force, the first plate 2161 and the second plate 2162 are not easily deformed due to the support of the second reinforcement 2163, which helps to improve the structural strength of the auxiliary component 216, thereby better supporting the first beam 211 and the second beam 212 or the first beam 211 and the first beam 211.

[0121] In some embodiments, see Figure 7 The box body 21 further includes a third beam 213 , which is disposed on the outer side of the first beam 211 along the width direction of the box body 21 , and a support member 214 is disposed on the first beam 211 along at least one end of the length direction of the box body 21 .

[0122] The third beam 213 may be a part of the box body 21. The third beam 213 may be arranged at one end in the width direction or at both ends in the width direction. The third beam 213 is arranged outside the first beam 211 to protect the first beam 211 at least at one end in the width direction of the box body 21 from direct impact by external force. The space enclosed by the third beam 213 and the first beam 211 may be used to accommodate components such as a battery management system.

[0123] By arranging a support member 214 on the first beam 211 at least at one end along the length direction of the box body 21 , the structural strength of the first beam 211 in the length direction of the box body 21 is strengthened to prevent the first beam 211 from being deformed by direct impact of external force.

[0124] This application provides a battery 2, see Figure 3 , Fig. 9 , including a box body 21, a plurality of battery cells 22 and an end structure 23. The plurality of battery cells 22 are arranged into at least one column of battery modules 24, and the end structure 23 is arranged at both ends of the battery module 24. The support member 214 is arranged between the first beam 211 and the end structure 23.

[0125] The battery module 24 can be a structure composed of multiple battery cells 22, arranged in a row. The battery module 24 is arranged in the accommodating space 215 of the box body 21, and can be specifically arranged between two adjacent second beams 212, or between the second beam 212 and the first beam 211 parallel thereto. The battery 2 can be arranged with multiple battery modules 24, or with 1 or 2 battery modules 24. Optionally, the battery module 24 is formed by stacking the large surfaces of the battery cells 22, and the large surface of the battery cells 22 at one end of the battery module 24 is facing the support member 214.

[0126] The end structure 23 may be a structural member disposed at both ends of the battery module 24, and is used to apply a clamping force to the battery module 24, so that the volume energy density of the battery module 24 is greater. The end structure 23 may face the large surface of the battery cell 22. The surface area of ​​the end structure 23 may be greater than or equal to the large surface of the battery cell 22, which is beneficial for protecting the large surface of the battery cell 22 from external sharp punctures; or it may be smaller than the large surface of the battery cell 22, reducing the weight of the end structure 23. Optionally, the end structure 23 may be in the shape of a plate, or may be in the shape of a hollow grid, which helps to reduce weight compared to a solid plate.

[0127] By arranging the support member 214 between the first beam 211 and the end structure 23, the external force passes through the first beam 211, the support member 214, the end structure 23 in sequence, and finally is transmitted to the large surface of the battery cell 22 in the battery module 24. The force is dispersed by the end structure 23 after being transmitted through multiple layers, thereby reducing the influence of the external force on the battery cell 22 in the battery module 24 and improving the ability of the battery 2 to resist external force impact.

[0128] In some embodiments, see Figure 8 , there is a gap between the end structure 23 and the support member 214.

[0129] The battery module 24 is clamped by applying a clamping force at the end. Due to changes in the clamping force during the process or the different amounts of compression of the battery module 24 itself when subjected to force, the distance of the battery module 24 in the length direction of the box 21 will change. There will be dimensional tolerances between the two end structures 23 installed at a fixed distance, making installation difficult.

[0130] By providing a gap between the end structure 23 and the support member 214 , the gap can absorb the dimensional tolerance when the battery module 24 is installed, which helps to install the battery module 24 and the support member 214 .

[0131] In some embodiments, see Fig. 9 , Fig.10 The battery 2 includes a wiring harness structure 25 and / or a pipeline structure 26 , and the wiring harness structure 25 and / or the pipeline structure 26 are arranged between the first beam 211 and the end structure 23 .

[0132] The wiring harness structure 25 may be a part of the battery 2 , and the wiring harness structure 25 may be a low-voltage wiring harness or a high-voltage wiring harness.

[0133] The pipeline structure 26 may be a part of the battery 2 , and the pipeline structure 26 may be a water cooling pipe used to connect the water cooling plate and the external water circuit.

[0134] By arranging the wiring harness structure 25, the pipeline structure 26 and the support member 214 between the first beam 211 and the end structure 23, the support member 214 is arranged in the gap between the wiring harness structure 25 and the pipeline structure 26, and does not interfere with the wiring harness structure 25 and the pipeline structure 26, and does not occupy additional space, so that the structural strength of the box body 21 is improved while increasing the space utilization of the battery 2.

[0135] In some embodiments, see Figure 8 The battery 2 includes a third plate 27 , which is disposed between the support member 214 and the end structure 23 , and the position of the third plate 27 corresponds to the position of the opening structure of the support member 214 .

[0136] The third plate 27 may be disposed on the support member 214 , or on the end structure 23 , or between the support member 214 and the end structure 23 and fixed to the box body 21 through other structures.

[0137] When the third plate 27 is disposed on the support member 214 or the end structure 23 , it can be fixedly connected by welding, bonding, plug-in or the like.

[0138] The position of the third plate 27 corresponds to the position of the opening structure of the support member 214. When the support member 214 and the end structure 23 are squeezed by external force, the outer frame 2141 and the inner plate 2142 of the support member 214 fall on the third plate 27, making it less susceptible to squeezing and deformation.

[0139] By setting a third plate 27 between the support member 214 and the end structure 23, the contact area during the transmission process is increased, so that the pressure is reduced under the same external force, which is less likely to cause deformation of the support member 214 and the end structure 23, thereby improving the strength and service life of the support member 214 and the end structure 23.

[0140] In some embodiments, see Figure 8 Along the width direction of the box body 21 , the battery 2 includes at least two battery modules 24 , and each battery module 24 is correspondingly provided with at least one support member 214 .

[0141] By setting at least one support member 214 on each module, the external force is transmitted along the first beam 211, the support member 214, the battery module 24, and the first beam 211 on the other side in sequence. The box body 21 helps the battery module 24 to resist the external force together, thereby improving the ability of the battery module 24 and its internal battery cells 22 to withstand external force impact.

[0142] The present application provides an electrical device 1, see Figure 1 , including a battery 2, the battery 2 is used to provide electrical energy to the electrical device 1.

[0143] The electrical device 1 may be a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery vehicle, an electric car, a ship, a spacecraft, an energy storage box or an energy storage cabinet, etc.

[0144] By using the battery 2 in the present application, it helps to improve the thermal management capability of the battery 2 and thus improve the battery life of the battery 2, thereby improving the battery life performance of the electrical device 1.

[0145] According to some embodiments provided by this application, Figure 3-9 The present application provides a box body 21 , including a first beam 211 , a support member 214 , and a second beam 212 .

[0146] Along the height direction of the box body 21, the support member 214 is arranged in the middle area of ​​the first beam 211. The support member 214 is arranged on the first beam at one end along the length direction of the box body 21. The support member 214 includes an outer frame 2141, an inner plate 2142, a base 2144 and a first reinforcement member 2145, and the two partition plates 21421 of the inner plate 2142 are basically vertically arranged in the cavity 2143 surrounded by the outer frame 2141. The base 2144 covers the opening structure at one end of the cavity 2143, and the first reinforcement member 2145 is arranged to be connected to the base 2144 and the outer frame 2141 respectively. The auxiliary member 216 is arranged at the connection between the first beam 211 and the second beam 212. The support member 214 and the wiring harness structure 25 and / or the pipeline structure 26 are arranged between the first beam 211 and the end structure 23.

[0147] There is a gap between the end structure 23 and the support member 214. The third plate 27 is disposed between the support member 214 and the end structure 23, corresponding to the position of the opening structure of the support member 214. Along the width direction of the box body 21, the battery 2 includes at least two battery modules 24, and each battery module 24 is correspondingly provided with a support member 214.

[0148] By arranging a support member 214 on the first beam 211, the bending deformation resistance of the first beam 211 when subjected to external force is improved without changing the appearance of the box body 21. The support member 214 transmits the external force on the first beam 211 to the module structure and then to the first beam 211 on the other side, so that the first beam 211 on one side of the box body 21 originally borne the external force alone, but now the box body 21 and its internal components bear the external force together, thereby improving the structural strength of the first beam 211 and the box body 21.

[0149] 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, characterized in that: The box is applied to a battery, and comprises: a first beam, the first beam enclosing a receiving space of the box body; and A support member is arranged on the first beam, the support member is arranged in the accommodating space, and at least a part of the support member protrudes from the inner surface of the first beam.

2. The box according to claim 1, wherein: Along the height direction of the box body, the support member is arranged in the middle area of ​​the first beam.

3. The box according to any one of claims 1 to 2, wherein: At least two support members are included along the width direction of the box body, and the at least two support members are distributed at intervals.

4. The box according to any one of claims 1 to 2, wherein: The support member includes an outer frame and an inner plate. The cavity surrounded by the outer frame includes opening structures at two ends. The inner plate is arranged in the cavity and is arranged to extend along the opening structure at one end toward the opening structure at the other end.

5. The box according to claim 4, wherein: The inner plate includes at least two partition plates, and the partition plates are cross-arranged in the cavity.

6. The box according to claim 4, wherein: The support member includes a base, which is arranged between the first beam and the outer frame, and the base covers the opening structure at one end of the cavity.

7. The box according to claim 6, wherein: The support member includes a first reinforcement member, and the first reinforcement member is configured to be connected to the base and the outer frame respectively.

8. The box according to any one of claims 1-2 and 5-7, wherein: The box body includes a second beam arranged in the accommodating space, both ends of the second beam are arranged to be connected to the first beam, and the support member is arranged to be connected to the second beam at at least one end along the width direction of the box body.

9. The box according to claim 8, wherein: The box body includes an auxiliary component, and the auxiliary component is arranged at the connection between the first beam and the second beam; and / or the auxiliary component is arranged at the connection between two connected first beams.

10. The housing according to claim 9, wherein: The auxiliary component includes a first plate and a second plate that are bent, and the auxiliary component also includes a second reinforcement component that is respectively connected to the first plate and the second plate.

11. The box according to any one of claims 1, 2, 5-7, 9, and 10, wherein: The box body further comprises a third beam, which is arranged outside the first beam along the width direction of the box body, and the support member is arranged on the first beam along at least one end of the length direction of the box body.

12. A battery, characterized in that: include: The box according to any one of claims 1 to 11; A plurality of battery cells are arranged in at least one column of battery modules; and End structures, arranged at both ends of the battery module; Wherein, the support member is arranged between the first beam and the end structure.

13. The battery according to claim 12, wherein: There is a gap between the end structure and the support member.

14. The battery according to any one of claims 12 to 13, wherein: The battery includes a wiring harness structure and / or a pipeline structure, and the wiring harness structure and / or the pipeline structure are arranged between the first beam and the end structure.

15. The battery according to any one of claims 12 to 13, wherein: The battery includes a third plate, which is disposed between the support member and the end structure, and a position of the third plate corresponds to a position of the opening structure of the support member.

16. The battery according to any one of claims 12 to 13, wherein: Along the width direction of the box body, the battery includes at least two battery modules, and each battery module is correspondingly provided with at least one supporting member.

17. An electrical device, characterized in that: include The battery according to any one of claims 12 to 16, wherein the battery is used to provide electrical energy to the electrical device.

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