Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a box body, a heat exchange assembly, a first thermal insulation layer and a battery monomer, the box body comprises a frame and a bottom wall which define a containing cavity, and the bottom wall comprises a first supporting structure protruding towards the containing cavity. The heat exchange assembly is located in the containing cavity and located on the side, away from the bottom wall, of the first supporting structure, and the heat exchange assembly is connected with the box body; the first heat preservation layer is located between the heat exchange assembly and the bottom wall. The single batteries are located on the sides, away from the bottom wall, of the heat exchange assemblies. According to the battery provided by the invention, the rigidity of the box body can be enhanced, heat preservation is performed on the battery monomers, and the stability of the battery is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to 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] The battery includes a box, a battery cell and a heat exchange assembly. The battery cell and the heat exchange assembly are both located in the box. The heat exchange assembly is used to adjust the temperature of the battery cell so that the battery cell can work at a suitable temperature and improve the stability of the battery. However, the external environment of the box will have a certain impact on the internal temperature of the battery, affecting the temperature stability of the battery cell. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems in the background technology. To this end, one purpose of the present application is to provide a battery and an electrical device that can enhance the rigidity of the battery box while keeping the battery cells and the heat exchange components warm.

[0005] An embodiment of the first aspect of the present application provides a battery, the battery comprising a housing, a heat exchange assembly, a first thermal insulation layer, and a battery cell. The housing comprises a frame and a bottom wall surrounding a receiving cavity, and the bottom wall comprises a first supporting structure protruding toward the receiving cavity. The heat exchange assembly is located in the receiving cavity, and the heat exchange assembly is located on a side of the first supporting structure away from the bottom wall, and the heat exchange assembly is connected to the housing. The first thermal insulation layer is located between the heat exchange assembly and the bottom wall. The battery cell is located on a side of the heat exchange assembly away from the bottom wall.

[0006] In the technical solution of the embodiment of the present application, the first insulation layer can insulate the heat exchange assembly and the battery cell to reduce the heat exchange between the battery cell and the heat exchange assembly and the external environment of the box, thereby improving the temperature stability of the battery cell and improving the stability of the battery. At the same time, the first support structure can enhance the overall strength of the box, reduce the possibility of the battery cell being squeezed, and improve the stability of the battery.

[0007] In some embodiments, the first support structure includes a first reinforcing rib, and the first reinforcing rib extends along a first direction, and the first direction is parallel to the surface of the bottom wall. In this way, the first reinforcing rib can improve the rigidity of the bottom wall.

[0008] In some embodiments, the first support structure further includes a second reinforcing rib, the second reinforcing rib extends along a second direction, the second direction is parallel to the surface of the bottom wall, and the second direction intersects the first direction. The first reinforcing rib and the second reinforcing rib can increase the rigidity of the bottom wall from different directions, so that the first support structure is more evenly distributed on the surface of the bottom wall, thereby increasing the rigidity of the box as a whole.

[0009] In some embodiments, opposite ends of the first reinforcing rib along the first direction are connected to the frame, opposite ends of the second reinforcing rib along the second direction are connected to the frame, and the middle of the first reinforcing rib along the first direction is connected to the middle of the second reinforcing rib along the second direction. The first reinforcing rib and the second reinforcing rib are alternately arranged in the accommodating cavity, which can improve the rigidity of the bottom wall and the reliability of the battery.

[0010] In some embodiments, the first support structure includes a plurality of first reinforcing ribs and a plurality of second reinforcing ribs, the plurality of first reinforcing ribs are arranged at intervals along the second direction, the plurality of second reinforcing ribs are arranged at intervals along the first direction, the first reinforcing ribs are connected to the frame at both opposite ends along the first direction, the second reinforcing ribs are connected to the frame at both opposite ends along the second direction, and the first reinforcing ribs are connected to the second reinforcing ribs. The plurality of cross-arranged first reinforcing ribs and second reinforcing ribs can form a mesh structure on the bottom wall, thereby increasing the rigidity of the bottom wall and improving the reliability of the battery.

[0011] In some embodiments, the first thermal insulation layer is also located in the space surrounded by the first reinforcing rib and the second reinforcing rib, and the first thermal insulation layer is also located in the space surrounded by the first reinforcing rib, the second reinforcing rib and the frame, which can enhance the thermal insulation effect of the first thermal insulation layer on the battery cell and improve the stability of the battery temperature.

[0012] In some embodiments, the bottom wall further includes a boss protruding toward the accommodating cavity, the boss is connected to the first supporting structure, and the heat exchange component is connected to the boss. The boss provides installation and support for the heat exchange component in the accommodating cavity, and the boss can also improve the rigidity of the bottom wall.

[0013] In some embodiments, along the third direction, the height of the first support structure is less than the height of the boss, and the third direction intersects with the surface of the bottom wall. The heat exchange component does not contact the first support structure, and the gap between the heat exchange component and the first support structure can be used to arrange the first insulation layer to improve the insulation effect of the heat exchange component and the battery cell.

[0014] In some embodiments, according to some embodiments of the present application, a surface of the boss facing away from the accommodating cavity has a groove, and the opening of the groove passes through the surface of the bottom wall facing away from the accommodating cavity. Providing the groove can appropriately reduce the weight of the box.

[0015] In some embodiments, the bottom wall further includes a second supporting structure, the second supporting structure is located in the groove, and the second supporting structure is connected to the groove. The second supporting structure can enhance the rigidity of the boss and improve the rigidity of the bottom wall.

[0016] In some embodiments, the second support structure is integrally formed with the first support structure, which can simplify the processing steps.

[0017] In some embodiments, the battery further comprises a second thermal insulation layer, the second thermal insulation layer is located in the groove, and the second thermal insulation layer is in contact with the groove. The second thermal insulation layer can also insulate the box body, thereby improving the thermal insulation effect of the box body on the battery cell.

[0018] In some embodiments, the bottom wall includes a plurality of bosses, which are arranged in an array in the accommodating cavity, and any two adjacent bosses are spaced from each other. The plurality of bosses are distributed in an array and connected to the heat exchange assembly, which can better fix the heat exchange assembly, and at the same time, the first insulation layer can be evenly filled between the bottom wall and the heat exchange assembly, which is conducive to stabilizing the operating temperature of the battery and improving the insulation effect of the battery cell and the heat exchange assembly.

[0019] In some embodiments, the first insulation layer is a foam insulation layer. The foam material has a heat insulation effect, stable performance, and can be filled in various complex structures, which can provide better insulation effect for battery cells and heat exchange components.

[0020] In some embodiments, the material of the foam insulation layer includes one of foamed polyurethane, foamed polystyrene, phenolic foam, foamed nitrile, and imitation wood polyether. The above materials have low thermal conductivity, no gaps after filling, strong adhesion after curing, good shock and pressure resistance, and good thermal insulation effect.

[0021] In some embodiments, the material of the box is non-metallic. The battery box is made of non-metallic material, which can significantly reduce the weight of the battery box, thereby increasing the energy density of the battery. At the same time, the non-metallic material has better corrosion resistance. In addition, compared with metal boxes, non-metal boxes are more environmentally friendly.

[0022] An embodiment of the second aspect of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0023] 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

[0024] 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.

[0025] Figure 1 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of a partial explosion of another battery provided in an embodiment of the present application;

[0027] Figure 3 A right side view of a box provided in an embodiment of the present application;

[0028] Figure 4 for Figure 3 Schematic diagram of the cross section of the AA surface;

[0029] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0030] Figure 6 A schematic diagram of the structure of a box provided in an embodiment of the present application when viewed from an upward perspective.

[0031] Description of reference numerals:

[0032] 10. Box body; 11. Accommodating cavity; 12. Frame; 13. Bottom wall; 131. First supporting structure; 1311. First reinforcing rib; 1312. Second reinforcing rib; 132. Boss; 133. Groove; 134. Second supporting structure; 20. Heat exchange assembly; 30. First thermal insulation layer; 31. Mounting hole; 40. Battery cell; 50. Second thermal insulation layer. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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).

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The battery box can be made of metal or non-metal. Compared with metal boxes, non-metal boxes can reduce the weight of the box and increase the energy density of the battery, but the rigidity of non-metal boxes is insufficient. In addition, the external environment of the box will have a certain impact on the internal temperature of the battery, affecting the temperature stability of the battery cell.

[0043] Based on the above considerations, an embodiment of the present application provides a battery, which includes a casing, a heat exchange assembly, a first thermal insulation layer and a battery cell. The casing includes a frame and a bottom wall surrounding a receiving cavity, and the bottom wall includes a first supporting structure protruding toward the receiving cavity. The heat exchange assembly is located in the receiving cavity, and the heat exchange assembly is located on the side of the first supporting structure away from the bottom wall, and the heat exchange assembly is connected to the casing. The first thermal insulation layer is located between the heat exchange assembly and the bottom wall. The battery cell is located on the side of the heat exchange assembly away from the bottom wall. By providing a first thermal insulation layer between the casing and the heat exchange assembly, the battery cell and the heat exchange assembly are insulated, the heat exchange between the casing and the outside of the casing is reduced, and the reliability and safety of the battery are improved.

[0044] The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. The battery disclosed in the present application can be used to form a power supply system of the electrical device.

[0045] 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.

[0046] The present application embodiment provides a battery, Figure 1 A schematic diagram of a battery structure provided in an embodiment of the present application is shown in FIG. Figure 1 The battery includes a housing 10 and a battery cell 40 . Figure 2 A partial explosion diagram of another battery provided in an embodiment of the present application. Figure 2The battery also includes a heat exchange component 20 and a first insulation layer 30. The box body 10 includes a frame 12 and a bottom wall 13 surrounding the accommodating cavity 11, and the bottom wall 13 includes a first support structure 131 protruding toward the accommodating cavity 11. The heat exchange component 20 is located in the accommodating cavity 11, and the heat exchange component 20 is located on the side of the first support structure 131 away from the bottom wall 13, and the heat exchange component 20 is connected to the box body 10; the first insulation layer 30 is located between the heat exchange component 20 and the bottom wall 13. Among them, the battery cell 40 is located on the side of the heat exchange component 20 away from the bottom wall 13.

[0047] In an embodiment of the present application, the box body 10 is used to provide a storage space for the battery cell 40 , the heat exchange assembly 20 , and the first insulation layer 30 . The heat exchange assembly 20 , the first insulation layer 30 and the battery cell 40 are all located in the storage cavity 11 .

[0048] In the embodiment of the present application, the box body 10 is surrounded by a frame 12 and a bottom wall 13. In some embodiments, such as Figure 1 As shown, the frame 12 may be a hollow structure with one end open, for example, the frame 12 may be a cylinder or a cuboid with one end open, and the bottom wall 13 covers the open end of the frame 12. In other embodiments, such as Figure 2 As shown, the frame 12 may be a hollow structure with openings at both ends, and the box body 10 may also include a top wall ( Figure 2 (not shown), the top wall and the bottom wall 13 respectively cover the two open ends of the frame 12.

[0049] In the embodiments of the present application, the bottom wall 13 may be a flat or curved plate-like structure, etc., and the embodiments of the present application are not limited to this.

[0050] In the embodiment of the present application, the shape of the accommodating cavity 11 can be various. The shape of the accommodating cavity 11 can be a cylinder or a cuboid, etc., but the shape of the accommodating cavity 11 is not limited thereto.

[0051] In some embodiments of the present application, the material of the frame 12 may be a non-metal material, for example, the material of the frame 12 may be carbon fiber or glass fiber, etc. In other embodiments of the present application, the material of the frame 12 may be a metal material.

[0052] In some embodiments of the present application, the material of the bottom wall 13 may be a non-metal material, for example, the material of the bottom wall 13 may be carbon fiber or glass fiber, etc. In other embodiments of the present application, the material of the bottom wall 13 may be a metal material.

[0053] In the embodiments of the present application, the frame 12 and the bottom wall 13 may be connected in various ways. For example, the frame 12 and the bottom wall 13 may be connected by welding, or the frame 12 and the bottom wall 13 may be connected by bonding.

[0054] In some embodiments of the present application, the material of the frame 12 and the material of the bottom wall 13 may be the same. For example, the material of the frame 12 and the material of the bottom wall 13 are both non-metallic materials, and the frame 12 and the bottom wall 13 may be integrally formed.

[0055] In other embodiments of the present application, the material of the frame 12 and the material of the bottom wall 13 may be different.

[0056] In an embodiment of the present application, the bottom wall 13 has a first supporting structure 131 protruding toward the accommodating cavity 11. The first supporting structure 131 can increase the rigidity of the bottom wall 13. When the box body 10 is squeezed or bumped, the box body 10 is not easily deformed or damaged, thereby reducing the squeezing of the battery cells 40, the heat exchange assembly 20 and the first thermal insulation layer 30 in the accommodating cavity 11.

[0057] In the embodiment of the present application, the first supporting structure 131 may be made of a variety of materials. For example, the first supporting structure 131 may be made of carbon fiber or glass fiber.

[0058] In some embodiments, the shape of the first support structure 131 may be a cuboid or a cylinder, etc.; or the shape of the first support structure 131 may be other irregular shapes.

[0059] In some embodiments, the first supporting structure 131 may not be connected to the frame 12 , or the first supporting structure 131 may be connected to the frame 12 .

[0060] In the embodiment of the present application, the heat exchange assembly 20 can exchange heat with the battery cell 40 and adjust the temperature of the battery cell 40. For example, when the temperature of the battery cell 40 is high, a heat exchange medium with a lower temperature is injected into the heat exchange assembly 20, and the heat exchange medium absorbs the heat generated by the battery cell 40 to reduce the temperature of the battery cell 40; when the temperature of the battery cell 40 is low, a heat exchange medium with a higher temperature is injected into the heat exchange assembly 20, and the heat exchange medium transfers the heat to the battery cell 40, thereby increasing the temperature of the battery cell 40. The heat exchange assembly 20 can make the battery cell 40 work at a suitable temperature, thereby improving the stability of the battery.

[0061] Exemplarily, the heat exchange component 20 may be a water-cooled plate or a heat exchange plate filled with other refrigerants, etc. The heat exchange component 20 may be a single heat exchange plate or may be formed by stacking a plurality of heat exchange plates.

[0062] In the embodiment of the present application, the heat exchange assembly 20 may be in contact with the battery cell 40 , or the heat exchange assembly 20 may be arranged without being in contact with the battery cell 40 .

[0063] In the embodiment of the present application, the heat exchange assembly 20 is connected to the box 10 to improve the stability of the heat exchange assembly 20. The heat exchange assembly 20 can be connected to the box 10 in a variety of ways, for example, the heat exchange assembly 20 can be bonded to the box 10, or the heat exchange assembly 20 can be welded to the box 10, or the heat exchange assembly 20 can be connected to the box 10 by bolts.

[0064] In some embodiments of the present application, the heat exchange assembly 20 is located between the battery cell 40 and the bottom wall 13 , and the heat exchange assembly 20 may be bonded to a portion of the bottom wall 13 that protrudes toward the accommodating cavity 11 .

[0065] In the embodiment of the present application, the first insulation layer 30 is located between the bottom wall 13 and the heat exchange assembly 20. The first insulation layer 30 can insulate the heat exchange assembly 20 and the battery cell 40. The first insulation layer 30 can be a variety of structures, for example, the first insulation layer 30 can be a vacuum insulation board, insulation cotton, foam material board, etc.

[0066] In some embodiments of the present application, the material of the first thermal insulation layer 30 is a foam material, and the foam material is filled between the heat exchange component 20 and the bottom wall 13 .

[0067] A battery cell 40 is the smallest unit that makes up a battery. In a battery, there may be multiple battery cells 40, and the multiple battery cells 40 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 40 are connected in both series and in parallel.

[0068] Each battery cell 40 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 40 may be cylindrical, flat, rectangular, or in other shapes.

[0069] In the battery provided in the embodiment of the present application, the first heat-insulating layer 30 can insulate the heat exchange assembly 20 and the battery cell 40 to reduce the heat exchange between the battery cell 40 and the heat exchange assembly 20 and the external environment of the box 10, thereby improving the temperature stability of the battery cell 40 and improving the stability of the battery. At the same time, the first support structure 131 can enhance the overall strength of the box 10, reduce the possibility of the battery cell 40 being squeezed, and improve the stability of the battery.

[0070] According to some embodiments of the present application, the first support structure 131 includes a first reinforcing rib 1311 , and the first reinforcing rib 1311 extends along a first direction X, and the first direction X is parallel to the surface of the bottom wall.

[0071] The first reinforcing rib 1311 can improve the rigidity of the bottom wall 13. The shape of the first reinforcing rib 1311 is not limited. The shape of the first reinforcing rib 1311 can be a cuboid, a triangular prism, or other irregular shapes. The number of the first reinforcing rib 1311 can be single or multiple.

[0072] When the surface of the bottom wall 13 is a plane, the first direction X is any direction parallel to the surface of the bottom wall 13. For example, when the shape of the surface of the bottom wall 13 is a polygon, the first direction X may be parallel to the extension direction of one of the sides of the bottom wall 13, or the first direction X may not be parallel to the extension direction of any one of the sides of the bottom wall 13.

[0073] In some embodiments of the present application, the first reinforcing rib 1311 may not be connected to the frame 12 .

[0074] In some other embodiments of the present application, one end of the first reinforcing rib 1311 is connected to the frame 12 , and the other end of the first reinforcing rib 1311 is not connected to the frame 12 .

[0075] In other embodiments of the present application, see Figure 2 Both ends of the first reinforcing rib 1311 are connected to the frame 12 .

[0076] In some embodiments of the present application, the material of the first thermal insulation layer 30 is a foam material, and the first thermal insulation layer 30 is filled between the first reinforcing rib 1311 and the heat exchange component 20 .

[0077] In the embodiment of the present application, the first reinforcing rib 1311 is located in the accommodating cavity 11, and the first reinforcing rib 1311 is arranged parallel to the surface of the bottom wall 13 to improve the rigidity of the bottom wall 13. The first reinforcing rib 1311 can be integrally formed with other parts of the bottom wall 13, and the first reinforcing rib 1311 can also be welded to the cast part of the bottom wall 13, which has a simple structure and flexible processing methods.

[0078] According to some embodiments of the present application, see Figure 2 The first supporting structure 131 further includes a second reinforcing rib 1312 , which extends along a second direction Y. The second direction Y is parallel to the surface of the bottom wall 13 , and the second direction Y intersects with the first direction X.

[0079] The second reinforcing rib 1312 can improve the rigidity of the bottom wall 13, and the second reinforcing rib 1312 can be in various shapes, such as a cuboid, a triangular prism, or other irregular shapes, etc. The number of the second reinforcing rib 1312 can be single or multiple.

[0080] When the surface of the bottom wall 13 is a plane, the second direction Y is any direction parallel to the surface of the bottom wall 13. For example, when the shape of the surface of the bottom wall 13 is a polygon, the second direction Y may be parallel to the extension direction of one of the sides of the bottom wall 13, or the second direction Y may not be parallel to the extension direction of any one of the sides of the bottom wall 13.

[0081] In the embodiment of the present application, the second direction Y may be perpendicular to the first direction X; or the second direction Y may intersect with the first direction X but not perpendicular, for example, the angle between the second direction Y and the first direction X is greater than or equal to 80° and less than 90°.

[0082] In some embodiments of the present application, the second reinforcing rib 1312 may not be connected to the frame 12 .

[0083] In some embodiments of the present application, one end of the second reinforcing rib 1312 is connected to the frame 12 , and the other end of the second reinforcing rib 1312 is not connected to the frame 12 .

[0084] In some embodiments of the present application, see Figure 2 Both ends of the second reinforcing rib 1312 are connected to the frame 12 .

[0085] In some embodiments of the present application, the first insulation layer 30 is located between the second reinforcement rib 1312 and the heat exchange component 20, and the arrangement of the first insulation layer 30 can be in various forms. For example, the first insulation layer 30 and the second reinforcement rib 1312 can be connected by bonding, or the first insulation layer 30 and the second reinforcement rib 1312 can be connected by snapping, etc.

[0086] In some embodiments of the present application, there may be multiple connection relationships between the first reinforcing ribs 1311 and the second reinforcing ribs 1312. For example, the first reinforcing ribs 1311 are connected to at least one second reinforcing rib 1312, and the second reinforcing ribs 1312 are connected to at least one first reinforcing rib 1311; or the first reinforcing ribs 1311 and the second reinforcing ribs 1312 are not connected; or some first reinforcing ribs 1311 are connected to at least one second reinforcing rib 1312, and other first reinforcing ribs 1311 and the second reinforcing ribs 1312 are not connected.

[0087] In an embodiment of the present application, a first reinforcing rib 1311 and a second reinforcing rib 1312 having different extension directions are provided, so that the first support structure 131 can be more evenly distributed on the surface of the bottom wall 13. The first reinforcing rib 1311 and the second reinforcing rib 1312 can increase the rigidity of the bottom wall 13 from different directions, thereby increasing the overall strength of the box body 10.

[0088] According to some embodiments of the present application, the first reinforcing rib 1311 is connected to the frame 12 at both opposite ends along the first direction X, the second reinforcing rib 1312 is connected to the frame 12 at both opposite ends along the second direction Y, and the middle part of the first reinforcing rib 1311 along the first direction X is connected to the middle part of the second reinforcing rib 1312 along the second direction Y.

[0089] There are many ways to connect the first reinforcing rib 1311 and the second reinforcing rib 1312. For example, the first reinforcing rib 1311 and the second reinforcing rib 1312 can be connected by welding, or the first reinforcing rib 1311 and the second reinforcing rib 1312 can be integrally formed.

[0090] In the embodiment of the present application, the first reinforcing ribs 1311 and the second reinforcing ribs 1312 are arranged alternately in the accommodating cavity 11 , which can increase the rigidity of the bottom wall 13 and improve the reliability of the battery.

[0091] According to some embodiments of the present application, see Figure 2 The first supporting structure 131 includes a plurality of first reinforcing ribs 1311 and a plurality of second reinforcing ribs 1312. The plurality of first reinforcing ribs 1311 are arranged at intervals along the second direction Y, and the plurality of second reinforcing ribs 1312 are arranged at intervals along the first direction X. The first reinforcing ribs 1311 are connected to the frame 12 at opposite ends along the first direction X, and the second reinforcing ribs 1312 are connected to the frame 12 at opposite ends along the second direction Y. The first reinforcing ribs 1311 are connected to the second reinforcing ribs 1312.

[0092] In the embodiment of the present application, one first reinforcing rib 1311 is connected to multiple second reinforcing ribs 1312 arranged at intervals along the first direction X; one second reinforcing rib 1312 is connected to multiple first reinforcing ribs 1311 arranged at intervals along the second direction Y.

[0093] It can be understood that the plurality of first reinforcing ribs 1311 and the plurality of second reinforcing ribs 1312 form a mesh structure on the bottom wall 13 .

[0094] In some embodiments, the plurality of first reinforcing ribs 1311 are evenly spaced apart along the second direction Y.

[0095] In some embodiments, the plurality of second reinforcing ribs 1312 are evenly spaced apart along the first direction X.

[0096] In the embodiment of the present application, a plurality of cross-arranged first reinforcing ribs 1311 and second reinforcing ribs 1312 may form a mesh structure on the bottom wall 13 , thereby increasing the rigidity of the bottom wall 13 and improving the reliability of the battery.

[0097] According to some embodiments of the present application, the first thermal insulation layer 30 is also located in the space enclosed by the first reinforcing rib 1311 and the second reinforcing rib 1312 , and the first thermal insulation layer 30 is also located in the space enclosed by the first reinforcing rib 1311 , the second reinforcing rib 1312 and the frame 12 .

[0098] In some embodiments, the first reinforcing rib 1311 is connected to the second reinforcing rib 1312, and both ends of the first reinforcing rib 1311 and the second reinforcing rib 1312 are connected to the frame 12. In other words, the first thermal insulation layer 30 is not only located between the heat exchange assembly 20 and the bottom wall 13, but also located in the gap between the first reinforcing rib 1311 and the second reinforcing rib 1312 and the gap between the first reinforcing rib 1311, the second reinforcing rib 1312 and the frame 12.

[0099] In an embodiment of the present application, the first thermal insulation layer 30 is located between the heat exchange assembly 20 and the bottom wall 13, and the first thermal insulation layer 30 is also located in the space surrounded by the first reinforcing rib 1311 and the second reinforcing rib 1312, and the first thermal insulation layer 30 is also located in the space surrounded by the first reinforcing rib 1311, the second reinforcing rib 1312 and the frame 12, which can enhance the thermal insulation effect of the first thermal insulation layer 30 on the battery cell 40 and enhance the stability of the battery temperature.

[0100] According to some embodiments of the present application, Figure 3 This is a right side view of a box provided in an embodiment of the present application. Figure 4 for Figure 3 Schematic diagram of the cross section of the AA surface. Figure 5 for Figure 4 A partial enlarged view of point B in the middle. Figures 2 to 5 The bottom wall 13 also includes a boss 132 protruding toward the accommodating cavity 11 , the boss 132 is connected to the first supporting structure 131 , and the heat exchange assembly 20 is connected to the boss 132 .

[0101] The boss 132 can provide installation support for the heat exchange assembly 20 , and the boss 132 can be in various shapes, for example, the boss 132 can be a frustum or a prism.

[0102] There are many ways to connect the heat exchange component 20 and the boss 132, for example, the heat exchange component 20 and the boss 132 can be connected by welding or bonding, etc. There are many ways to connect the boss 132 and the first support structure 131, for example, the boss 132 and the first support structure 131 can be connected by welding, the boss 132 and the first support structure 131 can also be integrally formed, etc.

[0103] The number of the bosses 132 may be one or more, and the arrangement of the bosses 132 may be set according to requirements. For example, the bosses may be arranged at intervals or in contact with each other.

[0104] In some embodiments of the present application, see Figure 2The first heat-insulating layer 30 has a mounting hole 31 through which the boss 132 passes. The boss 132 passes through the mounting hole 31 of the first heat-insulating layer 30 and is connected to the heat exchange component 20. In some embodiments, the heat exchange component 20 is bonded to the boss 132.

[0105] In some embodiments, the orthographic projection of the boss 132 on the first projection plane is located within the orthographic projection of the heat exchange component 20 on the first projection plane, and the first projection plane is parallel to the surface of the bottom wall 13. In other embodiments, the orthographic projection of the boss 132 on the first projection plane does not overlap with the orthographic projection of the heat exchange component on the first projection plane. For example, the boss 132 is located outside the first thermal insulation layer 30, and the boss 132 is bonded to the edge area of ​​the heat exchange component 20.

[0106] In the embodiment of the present application, a boss 132 is provided to provide installation and support for the heat exchange assembly 20 in the accommodating cavity 11 , thereby improving the stability of the heat exchange assembly 20 . Meanwhile, the boss 132 can also improve the rigidity of the bottom wall 13 .

[0107] According to some embodiments of the present application, see Figure 5 Along the third direction Z, the height H1 of the first support structure 131 is less than the height H2 of the boss 132 , and the third direction Z intersects with the surface of the bottom wall 13 .

[0108] In the embodiment of the present application, when the heat exchange assembly 20 is connected to the boss 132 , the heat exchange assembly 20 does not contact the first support structure 131 .

[0109] Exemplarily, the difference between H2 and H1 satisfies the following range: 0.5 mm ≤ H2 - H1 ≤ 1 mm.

[0110] When the surface of the bottom wall 13 is a plane, the third direction intersects with the surface of the bottom wall 13 .

[0111] In an embodiment of the present application, the third direction Z may be perpendicular to the first direction X and the second direction Y; or the third direction Z intersects with the first direction X and the second direction Y but is not perpendicular, for example, the angle between the third direction Z and the first direction X is greater than or equal to 80° and less than 90°, and the angle between the third direction Z and the second direction Y is greater than or equal to 80° and less than 90°.

[0112] In an embodiment of the present application, the heat exchange assembly 20 does not contact the first support structure 131 , and the gap between the heat exchange assembly 20 and the first support structure 131 can be used to arrange the first insulation layer 30 to improve the insulation effect of the heat exchange assembly 20 and the battery cell 40 .

[0113] According to some embodiments of the present application, Figure 6 This is a schematic diagram of the structure of a box provided in an embodiment of the present application when viewed from above. Figure 4 , Figure 5 and Figure 6 The side surface of the boss 132 facing away from the accommodating chamber 11 has a groove 133 , and the opening of the groove 133 passes through the side surface of the bottom wall 13 facing away from the accommodating chamber 11 .

[0114] The groove 133 may be in various shapes with one end open. For example, the groove 133 may be a prism or a frustum with one end open. The open end of the groove 133 is located on a side of the groove 133 away from the accommodating cavity 11 .

[0115] In some embodiments of the present application, the shape of the groove 133 is similar to that of the boss 132 .

[0116] In the embodiment of the present application, the groove 133 can be provided to appropriately reduce the weight of the box body 10 .

[0117] According to some embodiments of the present application, see Figure 4 , Figure 5 and Figure 6 The bottom wall 13 further includes a second supporting structure 134 . The second supporting structure 134 is located in the groove 133 , and the second supporting structure 134 is connected to the groove 133 .

[0118] The second supporting structure 134 can improve the rigidity of the bottom wall 13 . The second supporting structure 134 can be made of a variety of materials, for example, the second supporting structure 134 can be made of iron, aluminum, carbon fiber material, etc.

[0119] The second support structure 134 may be in various shapes. For example, the second support structure 134 may be in a rectangular parallelepiped or a cylinder.

[0120] There are many ways to connect the second support structure 134 and the groove 133. For example, the second support structure 134 and the groove 133 can be connected by welding, or the second support structure 134 and the groove 133 can be integrally formed.

[0121] In the embodiment of the present application, a second supporting structure 134 is connected to the groove 133 , which can enhance the rigidity of the boss 132 and improve the rigidity of the bottom wall 13 .

[0122] According to some embodiments of the present application, the second supporting structure 134 and the first supporting structure 131 are integrally formed.

[0123] In some embodiments, the first support structure 131 , the second support structure 134 and the boss 132 are integrally formed.

[0124] In the embodiment of the present application, the second supporting structure 134 and the first supporting structure 131 are integrally formed, which can simplify the processing steps.

[0125] According to some embodiments of the present application, see Figure 4 and Figure 5 The battery further includes a second thermal insulation layer 50 , which is located in the groove 133 , and the second thermal insulation layer 50 is in contact with the groove 133 .

[0126] The second insulation layer 50 is arranged in the groove 133, and the second insulation layer 50 can enhance the insulation performance of the box. The second insulation layer 50 can be a variety of structures, for example, the second insulation layer 50 can be insulation cotton or a foam material block. The second insulation layer 50 and the groove 133 can be connected in a variety of ways, for example, a card slot is provided in the groove 133, the second insulation layer 50 and the groove 133 are connected by a card connection, and the second insulation layer 50 can also be connected to the groove 133 by an adhesive method. The second insulation layer 50 is located in the groove 133 and contacts the second support structure 134.

[0127] In some embodiments of the present application, see Figure 4 and Figure 5 The material of the second thermal insulation layer 50 is a foam material. The second thermal insulation layer 50 is located in the groove 133 . The second thermal insulation layer 50 fills the gap between the second supporting structure 134 and the groove 133 .

[0128] In the embodiment of the present application, the second thermal insulation layer 50 can also insulate the box body 10 to improve the thermal insulation effect of the box body 10 on the battery cells 40 .

[0129] According to some embodiments of the present application, see Figure 2 The bottom wall includes a plurality of bosses 132 , and the plurality of bosses 132 are arranged in an array in the accommodating cavity 11 , and any two adjacent bosses 132 are spaced apart from each other.

[0130] In some embodiments of the present application, the bosses 132 are arranged in a rectangular array in the accommodating cavity 11 .

[0131] In some embodiments of the present application, the bosses 132 are arranged in an equidistant rectangular array in the accommodating cavity 11. For example, see Figure 2 , arranged in a rectangular array of 5 rows and 4 columns.

[0132] In an embodiment of the present application, multiple bosses 132 are distributed in an array and connected to the heat exchange component 20, which can better fix the heat exchange component 20 and also allow the first insulation layer 30 to be evenly filled between the bottom wall 13 and the heat exchange component 20, which is beneficial to stabilizing the battery operating temperature and improving the insulation effect.

[0133] According to some embodiments of the present application, the first thermal insulation layer 30 is a foamed thermal insulation layer.

[0134] In some embodiments of the present application, during the manufacturing process of the battery, the thermal insulation foam material is first evenly poured on the bottom wall 13, and then the boss 132 is connected to the heat exchange component 20. The thermal insulation foam material is subsequently foamed and expanded to form a first thermal insulation layer 30, filling the gap between the heat exchange component 20 and the bottom wall 13. One end of the boss 132 passes through the first thermal insulation layer 30 and is connected to the heat exchange component 20.

[0135] In other embodiments of the present application, during the manufacturing process of the battery, a thermal insulation foam material is first poured into a mold, the first thermal insulation layer 30 with the mounting hole 31 is foamed, and then the first thermal insulation layer 30 is placed in the box body 10, and the boss 132 passes through the mounting hole 31 of the first thermal insulation layer 30 and is connected to the heat exchange component 20.

[0136] In the embodiments of the present application, the foam material is a commonly used thermal insulation material, which has thermal insulation effects. At the same time, it has stable performance and is easy to be filled into various complex structures, which can provide a better thermal insulation effect for the battery cell 40 and the heat exchange assembly 20.

[0137] According to some embodiments of the present application, the material of the foamed insulation layer includes one of foamed polyurethane, foamed polystyrene, phenolic foam, foamed nitrile, and wood-like polyether.

[0138] In the embodiments of the present application, foamed polyurethane, foamed polystyrene, phenolic foam, foamed nitrile and wood-like polyether have low thermal conductivity, no gaps after filling, strong adhesion after curing, excellent shock and compression resistance, and good thermal insulation effect.

[0139] According to some embodiments of the present application, the material of the box body 10 is non-metal.

[0140] For example, the material of the box body 10 can be carbon fiber material, organic resin, glass fiber, etc.

[0141] In the embodiment of the present application, the box body 10 is made of non-metallic material, which can reduce the weight of the box body 10, thereby improving the energy density of the battery. At the same time, the non-metallic material has better corrosion resistance and is more environmentally friendly than manufacturing a metal box body 10.

[0142] An embodiment of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0143] The electrical device may refer to the relevant description in the above embodiments, which will not be described again here.

[0144] The electrical device has the beneficial effects of the battery provided in the embodiments of the present application. For details, please refer to the specific description of the battery in the above embodiments, which will not be repeated here.

[0145] The embodiment of the present application provides a battery. The battery includes a box 10, a heat exchange component 20, a first insulation layer 30, and a battery cell 40. The box 10 includes a frame 12 and a bottom wall 13 surrounding a receiving cavity 11, and the bottom wall 13 includes a first support structure 131 protruding toward the receiving cavity 11. The heat exchange component 20 is located in the receiving cavity 11, and the heat exchange component 20 is located on the side of the first support structure 131 away from the bottom wall 13, and the heat exchange component 20 is connected to the box 10. The first insulation layer 30 is located between the heat exchange component 20 and the bottom wall 13, and the first insulation layer 30 is also located in the space surrounded by the first reinforcement rib 1311 and the second reinforcement rib 1312, and in the space surrounded by the first reinforcement rib 1311, the second reinforcement rib 1312 and the frame 12. The battery cell 40 is located on the side of the heat exchange component 20 away from the bottom wall 13. The material of the first insulation layer 30 includes one of foamed polyurethane, foamed polystyrene, phenolic foam, foamed nitrile, and imitation wood polyether. The material of the box body 10 is non-metal.

[0146] The first support structure 131 includes a plurality of first reinforcing ribs 1311 and a plurality of second reinforcing ribs 1312. The first reinforcing ribs 1311 extend along a first direction X, and the second reinforcing ribs 1312 extend along a second direction Y. Both the first direction X and the second direction Y are parallel to the surface of the bottom wall 13, and the second direction Y is perpendicular to the first direction X. The plurality of first reinforcing ribs 1311 are arranged at intervals along the second direction Y, and the plurality of second reinforcing ribs 1312 are arranged at intervals along the first direction X. Both opposite ends of the first reinforcing ribs 1311 along the first direction X are connected to the frame 12, and both opposite ends of the second reinforcing ribs 1312 along the second direction Y are connected to the frame 12, and the first reinforcing ribs 1311 and the second reinforcing ribs 1312 are connected.

[0147] The bottom wall 13 also includes a boss 132 protruding toward the accommodating cavity 11, the boss 132 is connected to the first support structure 131, and the heat exchange component 20 is connected to the boss 132. The orthographic projection of the boss 132 on the first projection plane is located within the orthographic projection of the first thermal insulation layer 30 on the first projection plane, one end of the boss 132 penetrates the first thermal insulation layer 30 and is connected to the heat exchange component 20, and the first projection plane is parallel to the surface of the bottom wall 13. Along the third direction Z, the height H1 of the first support structure 131 is less than the height H2 of the boss, and the third direction Z intersects with the surface of the bottom wall 13. The bottom wall 13 includes a plurality of bosses 132, which are arranged in an array in the accommodating cavity 11, and any two adjacent bosses 132 are spaced apart from each other.

[0148] The side surface of the boss 132 facing away from the accommodating chamber 11 has a groove 133, and the opening of the groove 133 passes through the side surface of the bottom wall 13 facing away from the accommodating chamber 11. The bottom wall 13 also includes a second support structure 134, the second support structure 134 is located in the groove 133, the second support structure 134 is connected to the groove 133, and the second support structure 134 is integrally formed with the first support structure 131. The battery also includes a second thermal insulation layer 50, the second thermal insulation layer 50 is located in the groove 133, and the second thermal insulation layer 50 is in contact with the groove 133.

[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 battery, characterized in that: include: A box body (10) comprising a frame (12) and a bottom wall (13) surrounding a receiving cavity (11); the bottom wall (13) comprising a first supporting structure (131) protruding toward the receiving cavity (11); a heat exchange component (20) located in the accommodating cavity (11), and the heat exchange component (20) is located on a side of the first supporting structure (131) away from the bottom wall (13), and the heat exchange component (20) is connected to the box body (10); A first thermal insulation layer (30) is located between the heat exchange component (20) and the bottom wall (13); The battery cell (40) is located on a side of the heat exchange component (20) facing away from the bottom wall (13).

2. The battery according to claim 1, characterized in that The first supporting structure (131) comprises: The first reinforcing rib (1311) extends along a first direction, wherein the first direction is parallel to the surface of the bottom wall (13).

3. The battery according to claim 2, characterized in that The first supporting structure (131) further comprises: The second reinforcing rib (1312) extends along a second direction, the second direction is parallel to the surface of the bottom wall (13), and the second direction intersects with the first direction.

4. The battery according to claim 3, characterized in that The first reinforcing rib (1311) is connected to the frame (12) at two opposite ends along the first direction, the second reinforcing rib (1312) is connected to the frame (12) at two opposite ends along the second direction, and the middle part of the first reinforcing rib (1311) along the first direction is connected to the middle part of the second reinforcing rib (1312) along the second direction.

5. The battery according to claim 3, characterized in that The first supporting structure (131) comprises a plurality of first reinforcing ribs (1311) and a plurality of second reinforcing ribs (1312); the plurality of first reinforcing ribs (1311) are arranged at intervals along the second direction; the plurality of second reinforcing ribs (1312) are arranged at intervals along the first direction; opposite ends of the first reinforcing ribs (1311) along the first direction are connected to the frame (12); opposite ends of the second reinforcing ribs (1312) along the second direction are connected to the frame (12); and the first reinforcing ribs (1311) and the second reinforcing ribs (1312) are connected.

6. The battery according to claim 5, characterized in that The first thermal insulation layer (30) is also located within a space enclosed by the first reinforcing rib (1311) and the second reinforcing rib (1312), and within a space enclosed by the first reinforcing rib (1311), the second reinforcing rib (1312) and the frame (12).

7. The battery according to any one of claims 1 to 6, characterized in that The bottom wall (13) further comprises a boss (132) protruding toward the accommodating cavity (11), the boss (132) being connected to the first supporting structure (131), and the heat exchange assembly (20) being connected to the boss (132).

8. The battery according to claim 7, characterized in that Along a third direction, a height H1 of the first supporting structure (131) is smaller than a height H2 of the boss (132), and the third direction intersects with the surface of the bottom wall (13).

9. The battery according to claim 7, characterized in that A surface of the boss (132) on one side facing away from the accommodating cavity (11) has a groove (133), and an opening of the groove (133) passes through a surface of the bottom wall (13) on one side facing away from the accommodating cavity (11).

10. The battery according to claim 9, characterized in that The bottom wall (13) further comprises: The second supporting structure (134) is located in the groove (133), and the second supporting structure (134) is connected to the groove (133).

11. The battery according to claim 10, characterized in that The second supporting structure (134) and the first supporting structure (131) are integrally formed.

12. The battery according to claim 9, characterized in that The battery also includes: The second thermal insulation layer (50) is located in the groove (133), and the second thermal insulation layer (50) is in contact with the groove (133).

13. The battery according to claim 7, characterized in that The bottom wall (13) comprises a plurality of bosses (132), the plurality of bosses (132) being arranged in an array in the accommodating cavity (11), and any two adjacent bosses (132) being spaced apart from each other.

14. The battery according to any one of claims 1 to 6, characterized in that The first thermal insulation layer (30) is a foamed thermal insulation layer.

15. The battery according to claim 14, characterized in that The material of the foamed insulation layer includes one of foamed polyurethane, foamed polystyrene, phenolic foam, foamed nitrile, and wood-like polyether.

16. The battery according to any one of claims 1 to 6, characterized in that The box body (10) is made of non-metal.

17. An electrical device, characterized in that: Comprising a battery as claimed in any one of claims 1 to 16.

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