Casing, battery, and electric device

Abstract

The present application discloses a casing, a battery, and an electric device. The casing is used for containing a battery cell. The casing comprises: a casing body provided with a bottom plate, end plates connected to the bottom plate, and an accommodating space defined by the bottom plate and the end plates, the surface of the bottom plate facing the accommodating space being recessed to form an accommodating recess; and a heat exchange component located in the accommodating space, at least part of the heat exchange component being located in the accommodating recess. In the technical solution of embodiments of the present application, a casing comprises a casing body and a heat exchange component, the casing body comprises a bottom plate, end plates, and an accommodating space, and the accommodating space is used for accommodating a battery cell. An accommodating recess is formed in the bottom plate, and at least part of the heat exchange component in the accommodating space is located in the accommodating recess. Limiting can be provided for the heat exchange component by means of the accommodating recess, thereby alleviating the problem that the position of the heat exchange component and the bottom plate is unstable, thus improving the reliability of a battery.

Description

Housing, battery and electrical device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202322897148.7, filed on October 27, 2023, entitled “Casing, Battery and Electrical Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of energy storage, and in particular to a housing, a battery, and an electrical device. Background Art

[0004] As energy conservation and emission reduction are key to the sustainable development of the automotive industry, electric vehicles have become an important part of the industry's sustainable development due to their energy-saving and environmentally friendly advantages. For electric vehicles, battery technology is a key factor in their development.

[0005] With the development of new energy vehicles, higher requirements are placed on battery reliability.

[0006] Summary of the Invention

[0007] In view of the above problems, the present application provides a battery housing, a battery and an electrical device, which can improve the reliability of the battery.

[0008] In the first aspect, the present application provides a battery shell, which is used to accommodate battery cells. The shell includes: a shell body, having a bottom plate, an end plate connected to the bottom plate, and a accommodating space formed by the bottom plate and the end plate, and the surface of the bottom plate facing the accommodating space is recessed to form a accommodating groove; a heat exchange component is located in the accommodating space, and at least part of the heat exchange component is located in the accommodating groove.

[0009] In the technical solution of the embodiments of this application, the housing includes a main body and a heat exchange component. The main body includes a base plate, end plates, and a storage space for accommodating battery cells. The storage space is provided with a storage groove on the base plate. The heat exchange component within the storage space is at least partially located within the storage groove. The storage groove provides a position limit for the heat exchange component, improving the unstable position between the heat exchange component and the base plate, thereby improving battery reliability.

[0010] In some embodiments, the heat exchange component includes a current collector and a heat exchange channel connected to the current collector, and at least one of the current collector and the heat exchange channel is located in the receiving tank.

[0011] In these embodiments, at least one of the current collector and the heat exchange channel is located in the accommodating groove, so that the accommodating groove can provide a limit for the current collector and / or the heat exchange channel, thereby improving the problem of unstable position between the current collector and / or the heat exchange channel and the shell body.

[0012] In some embodiments, more than two heat exchange channels are spaced apart along the first direction; the accommodating tank includes more than two first accommodating tanks, and the more than two first accommodating tanks are spaced apart along the first direction, and at least part of each heat exchange channel is located in each first accommodating tank.

[0013] In these embodiments, when there are more than two heat exchange channels, there are also more than two first containing grooves, and each heat exchange channel is located in each first containing groove, so that the first containing groove can provide limits to different heat exchange channels respectively, thereby improving the stability of the relative positions between different heat exchange channels.

[0014] In some embodiments, the bottom plate further includes a limiting protrusion located between two adjacent first accommodating grooves, and a surface of the limiting protrusion facing the accommodating space is flush with a surface of the heat exchange channel facing the accommodating space.

[0015] In these embodiments, when the battery cell is arranged in the accommodating space, since the surface of the limiting protrusion facing the accommodating space is flush with the surface of the heat exchange channel facing the accommodating space, the limiting protrusion and the heat exchange channel can simultaneously provide support to the battery cell, thereby improving the stability of the relative position between the battery cell and the shell body, thereby further improving the reliability of the battery.

[0016] In some embodiments, the containing tank further includes a second containing tank located on one side of the first containing tank in the second direction, at least part of the current collector is located in the second containing tank, and the second direction intersects with the first direction.

[0017] In these embodiments, the second accommodating groove can also provide a limit for the current collector, thereby improving the relative position stability between the current collector and the shell body, and further improving the relative position stability between the entire heat exchange component and the shell body.

[0018] In some embodiments, two current collectors are connected to the two ends of the heat exchange channel in the second direction, two second accommodating tanks are located on both sides of the first accommodating tank in the second direction, and each current collector is located in each second accommodating tank, wherein the depth of the second accommodating tank is greater than the depth of the first accommodating tank, so as to form a recessed portion between the two second accommodating tanks on the side of the bottom plate away from the accommodating space, and the shell also includes an outer beam, at least part of which is located in the recessed portion.

[0019] In these embodiments, by making the depth of the first accommodating groove greater than the depth of the second accommodating groove, a larger space can be provided for the current collector, so that more current collectors can be accommodated in the second accommodating groove, and a recess can be formed between the two second accommodating grooves, with at least part of the outer beam located in the recess. On the one hand, the recess can provide a limit for the outer beam, thereby improving the stability of the relative position between the outer beam and the shell body; on the other hand, it can also reduce the space occupied by the outer beam in the height direction, reduce the overall height of the shell, and improve the energy density of the battery.

[0020] In some embodiments, a module beam is also included, which extends along the first direction and is arranged on the side of the heat exchange component away from the bottom plate. The module beam includes a beam body and a flange connected to the beam body. The flange is located on the side of the limiting protrusion facing the accommodating space and is connected to the limiting protrusion.

[0021] In these embodiments, a modular beam is added. The modular beam is located on the side of the heat exchange component facing away from the base plate and is connected to the base plate's stopper protrusion via a flange. This allows the modular beam to secure the heat exchange component to the base plate, eliminating the need for welding or other processes. This improves the reliability of the battery due to poor welding between the heat exchange component and the housing. Furthermore, the flange connection to the stopper protrusion can also reduce damage to the heat dissipation channel caused by the flange.

[0022] In some embodiments, the surface of the limiting protrusion facing the accommodating space is recessed to form a groove, and the flange is located in the groove.

[0023] In these embodiments, a groove is provided on the limiting protrusion, and the flange located in the groove can improve the effect of the flange protruding from the surface of the limiting protrusion on the size of the accommodation space, and can also improve the effect of the flange on the battery cells in the accommodation space.

[0024] In some embodiments, the beam body is protruded from the flange toward the accommodating space.

[0025] In these embodiments, the beam body protrudes from the flange, and the battery cell can be arranged on one side of the beam body, so that the beam body can provide a limit for the battery cell and improve the stability of the relative position between the battery cell and the shell.

[0026] In some embodiments, the module beam includes an end module beam, which is located on the side of the current collector away from the bottom plate. The end module beam includes a first connecting edge connected to the side of its beam body away from the flange, and the first connecting edge is connected to the end plate.

[0027] In these embodiments, by providing an end module beam, the end module beam is connected to the end plate through the first connecting edge and connected to the bottom plate through the flange, which can improve the stability of the relative position between the heat exchange component and the shell body.

[0028] In some embodiments, the module beam includes a middle module beam, which is located on the side of the heat exchange channel away from the bottom plate. The middle module beam includes two beam bodies spaced apart along the second direction and a second connecting edge connected between the two beam bodies. The beam body protrudes from the second connecting edge toward the accommodating space, and the second connecting edge is connected to the limiting protrusion.

[0029] In these embodiments, the module beam includes a central module beam, which includes two beam bodies and a second connecting edge located between the two beam bodies. The central module beam is also connected to the base plate via the second connecting edge, which can improve the relative position stability between the central module beam and the base plate. In addition, the two beam bodies can also provide positional constraints for the two groups of battery cells located on either side thereof.

[0030] In a second aspect, an embodiment of the present application further provides a battery, comprising a housing according to any of the first aspects described above and a battery cell located within the housing.

[0031] In a third aspect, an embodiment of the present application further provides an electrical device comprising a battery according to any one of the first aspects described above, the battery being used to provide electrical energy.

[0032] 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

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0034] FIG1 is a schematic structural diagram of a vehicle provided in one embodiment of the present application;

[0035] FIG2 is a schematic structural diagram of a battery provided in one embodiment of the present application;

[0036] FIG3 is a schematic structural diagram of a battery housing provided in one embodiment of the present application;

[0037] FIG4 is a schematic diagram of the explosion structure of FIG3 ;

[0038] FIG5 is a top view of FIG3;

[0039] FIG6 is a cross-sectional view taken along line AA in FIG5 .

[0040] The accompanying drawings in the specific implementation manner are as follows:

[0041] 1. Vehicle; 10. Battery; 11. Controller; 12. Motor; 20. Battery Cell; 30. Housing; 301. Upper Cover; 302. Housing Body; 310. Bottom Plate; 311. Receiving Groove; 311a. First Receiving Groove; 311b. Second Receiving Groove; 312. Position-Limiting Protrusion; 312a. Recess; 320. End Plate; 330. Accommodating Space; 340. Heat Exchange Component; 341. Current Collector; 342. Heat Exchange Channel; 350. Recessed Portion; 360. Outer Beam; 361. Longitudinal Beam; 362. Horizontal Beam; 363. Connecting Edge; 370. Module Beam; 370a. End Module Beam; 370b. Middle Module Beam; 371. Beam Body; 372. Flanged Edge; 373. First Connecting Edge; 374. Second Connecting Edge

[0042] X, first direction; Y, second direction; Z, height direction. DETAILED DESCRIPTION

[0043] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0044] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0045] 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. They 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0046] In addition, the technical terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified or limited, technical terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, these terms may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this application based on specific circumstances.

[0048] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0050] In the present application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-ion battery cells, etc., and the embodiments of the present application are not limited to this.

[0051] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a housing that encloses one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0052] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet includes a positive current collector and a positive active material layer, with the positive active material layer coated on the surface of the positive current collector. The positive current collector includes a positive current collector portion and a positive electrode tab connected to the positive current collector portion. The positive current collector portion is coated with the positive active material layer, while the positive electrode tab is not coated with the positive active material layer. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes a positive active material. The positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative current collector and a negative active material layer, which is coated on the surface of the current collector. The negative current collector includes a negative current collecting portion and a negative electrode tab connected to the negative current collecting portion. The negative current collecting portion is coated with the negative active material layer, while the negative tab is not coated with the negative active material layer. The negative current collector can be made of copper, and the negative active material layer includes a negative active material, which can be carbon or silicon, for example. The separator can be made of materials such as PP (polypropylene) or PE (polyethylene).

[0053] Functional components such as a water-cooling plate are installed on the battery shell. The water-cooling plate is often connected to the shell by welding. Due to the material difference between the shell material and the water-cooling plate structure, it is easy to cause poor welding between the water-cooling plate and the shell, or cause electrical corrosion due to the potential difference between the different materials, affecting the stability of the shell.

[0054] In order to alleviate the above technical problems, the connection method between the shell body and the water-cooling plate can be improved by providing a receiving groove on the shell body so that at least a part of the water-cooling plate can be accommodated in the receiving groove to improve the connection strength between the shell body and the water-cooling plate and ensure the stability of the relative position of the water-cooling plate and the shell body.

[0055] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0056] Electrical devices may include vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may include fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles may include pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0057] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical devices described above, but can also be applied to all batteries including a shell and electrical devices using batteries. However, for the sake of simplicity, the following embodiments are explained using electric vehicles as an example.

[0058] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1 provided in some embodiments of the present application. The vehicle 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. A battery 10 is provided inside the vehicle 1, and the battery 10 can be provided at the bottom, head or tail of the vehicle 1. The battery 10 can be used to power the vehicle 1, for example, the battery 10 can serve as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 11 and a motor 12, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for starting, navigating and driving the vehicle 1.

[0059] In some embodiments of the present application, the battery 10 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0060] In order to meet different power requirements, the battery 10 may include a plurality of battery cells, which refers to the smallest unit that constitutes a battery module or a battery pack. A plurality of battery cells can be connected in series and / or in parallel via electrode terminals for use in various applications. The batteries mentioned in this application include battery modules or battery packs. Among them, a plurality of battery cells can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection. In the embodiment of the present application, a plurality of battery cells can directly constitute a battery pack, or they can first constitute a battery module, and then the battery module constitutes a battery pack.

[0061] FIG2 shows a schematic structural diagram of a battery 10 according to an embodiment of the present application.

[0062] As shown in Figure 2, the battery 10 includes a housing 30 and a battery cell located within the housing 30. The housing 30 can be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as rectangular parallelepiped, cylinder, or sphere, and the present embodiment does not limit this. The material of the housing 30 can be an alloy material such as aluminum alloy, iron alloy, or a polymer material such as polycarbonate, polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin, and the present embodiment does not limit this.

[0063] The housing 30 is used to house battery cells and can have various structures. In some embodiments, the housing 30 can include a cover 301 and a body 302. The cover 301 and body 302 overlap each other and together define a storage space 330 for accommodating the battery cells. The cover 301 can be a hollow structure with one end open, and the body 302 can be a plate-like structure. The body 302 overlaps the open side of the cover 301 to form the housing 30 with the storage space 330. The cover 301 and body 302 can also each be a hollow structure with one end open, with the open side of the cover 301 overlapping the open side of the body 302 to form the housing 30 with the storage space 330. Of course, the cover 301 and body 302 can have various shapes, such as a cylinder, a cuboid, etc.

[0064] In order to improve the sealing performance after the upper cover 301 and the shell body 302 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the upper cover 301 and the shell body 302 .

[0065] Assuming that the upper cover 301 covers the top of the shell body 302, the upper cover 301 can also be called an upper shell, and the shell body 302 can also be called a lower shell.

[0066] Optionally, multiple battery cells 20 may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a configuration in which multiple battery cells 20 are connected both in series and in parallel. Multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire battery cell 20 is contained within the housing 30. Alternatively, multiple battery cells 20 may be first connected in series, in parallel, or in a hybrid configuration to form a battery unit, which is then further connected in series, in parallel, or in a hybrid configuration to form a single unit and contained within the housing 30.

[0067] Optionally, the battery cell 20 further includes a shell, which can be used to accommodate an electrode assembly, an electrolyte (not shown in the figure) and other components. The battery cell 20 may also include an end cap covering the opening of the shell. The shell and the end cap may be independent components. An opening may be provided on the shell, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap. Without limitation, the end cap and the shell may be integrated. Specifically, the end cap and the shell may form a common connection surface before other components are inserted into the shell. When the interior of the shell needs to be encapsulated, the end cap is covered with the shell. The shell may be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell may be determined according to the specific shape and size of the electrode assembly. The shell may be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose any special restrictions on this.

[0068] In this application, battery cells 20 may include lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, and the embodiments of this application are not limited thereto. Battery cells 20 may be cylindrical or have other shapes. However, for simplicity, the following embodiments will use prismatic battery cells as an example. A prismatic battery cell refers to a battery cell having a quadrangular prism shape.

[0069] Please refer to Figures 3 to 6 together. An embodiment of the third aspect of the present application provides a battery shell 30, which is used to accommodate battery cells. The shell 30 includes a shell body 302 and a heat exchange component 340. The shell body 302 has a bottom plate 310, an end plate 320 connected to the bottom plate 310, and a receiving space 330 formed by the bottom plate 310 and the end plate 320. The surface of the bottom plate 310 facing the receiving space 330 is recessed to form a receiving groove 311; the heat exchange component 340 is located in the receiving space 330, and at least part of the heat exchange component 340 is located in the receiving groove 311.

[0070] In the technical solution of the embodiment of the present application, the housing 30 includes a housing body 302 and a heat exchange component 340. The housing body 302 includes a base plate 310, an end plate 320, and a receiving space 330 for accommodating battery cells. The base plate 310 is provided with a receiving groove 311. The heat exchange component 340 within the receiving space 330 is at least partially located within the receiving groove 311. The receiving groove 311 provides a position limit for the heat exchange component 340, improving the unstable position between the heat exchange component 340 and the base plate 310, thereby improving the reliability of the battery.

[0071] In addition, at least part of the heat exchange component 340 is arranged in the accommodating groove 311, and the accommodating groove 311 provides a limit for the heat exchange component 340. The heat exchange component 340 does not need to be welded to the shell body 302, so as to improve the poor welding caused by the different materials of the heat exchange component 340 and the shell body 302, or the potential difference between different materials causes electrical corrosion, which affects the stability of the shell 30.

[0072] As mentioned above, there are many ways to set up the shell 30. Optionally, the shell 30 also includes an upper cover 301, and the shell body 302 and the upper cover 301 enclose a storage space 330 for accommodating battery cells. In order to improve the sealing performance between the shell body 302 and the upper cover 301, sealing components such as insulating parts are provided between the shell body 302 and the upper cover 301. Optionally, the end plate 320 and the bottom plate 310 can be separately provided and connected to each other. Alternatively, the end plate 320 and the bottom plate 310 can be provided as a whole. Optionally, the number of the end plates 320 is two, and the two end plates 320 are provided on both sides of the bottom plate 310 and enclose the bottom plate 310 to form a storage space 330.

[0073] The heat exchange component 340 can be configured in a variety of ways. The heat exchange component 340 can be used to accommodate a heat exchange medium, using the heat exchange medium to heat the battery cells within the accommodation space 330, or to dissipate heat from the battery cells within the accommodation space 330. This embodiment of the present application uses a water-cooled plate as an example. The heat exchange component 340 can be used to accommodate water, a heat exchange medium.

[0074] In some embodiments, the heat exchange component 340 includes a current collector 341 and a heat exchange channel 342 connected to the current collector 341 . At least one of the current collector 341 and the heat exchange channel 342 is located in the receiving tank 311 .

[0075] In these embodiments, at least one of the current collector 341 and the heat exchange channel 342 is located in the accommodating groove 311, so that the accommodating groove 311 can provide a limit for the current collector 341 and / or the heat exchange channel 342, thereby improving the problem of unstable position between the current collector 341 and / or the heat exchange channel 342 and the shell body 302.

[0076] Optionally, both the fluid collector 341 and the heat exchange channels 342 are hollow structures, and the fluid collector 341 and the heat exchange channels 342 are interconnected, allowing heat exchange medium to flow between the fluid collector 341 and the heat exchange channels 342. Optionally, the fluid collector 341 is provided with an opening through which the heat exchange medium can be transported into the fluid collector 341. Optionally, the opening is provided on the side of the fluid collector 341 facing away from the heat exchange channels 342 to reduce the effect of the opening on the interconnection between the fluid collector 341 and the heat exchange channels 342.

[0077] In some embodiments, more than two heat exchange channels 342 are spaced apart along the first direction X; the accommodating tank 311 includes more than two first accommodating tanks 311a, and the more than two first accommodating tanks 311a are spaced apart along the first direction X, and at least part of each heat exchange channel 342 is located in each first accommodating tank 311a.

[0078] In these embodiments, when there are more than two heat exchange channels 342, there are also more than two first receiving grooves 311a. Each heat exchange channel 342 is located in each first receiving groove 311a, so that the first receiving groove 311a can provide limiting functions for different heat exchange channels 342 respectively, thereby improving the stability of the relative positions between different heat exchange channels 342.

[0079] In other embodiments, the number of the heat exchange channel 342 may also be one, and the number of the first accommodating groove 311 a may also be one. One first accommodating groove 311 a is used to accommodate at least a portion of one heat exchange channel 342 .

[0080] Optionally, the heat exchange channel 342 extends along a first direction Y, and the first direction Y intersects the first direction X, for example, the first direction Y is perpendicular to the first direction X. Optionally, two or more heat exchange channels 342 have the same extension length in the first direction Y, so that the heat exchange capacities of the multiple heat exchange channels 342 are similar.

[0081] Optionally, two or more heat exchange channels 342 are connected to the same current collector 341 at the same end in the first direction Y, so that the heat exchange medium can flow in the current collector 341 and the two or more heat exchange channels 342 .

[0082] In some embodiments, the bottom plate 310 further includes a limiting protrusion 312 located between two adjacent first accommodating grooves 311 a , and a surface of the limiting protrusion 312 facing the accommodating space 330 is flush with a surface of the heat exchange channel 342 facing the accommodating space 330 .

[0083] In these embodiments, when the battery cell is disposed in the accommodating space 330, since the surface of the limiting protrusion 312 facing the accommodating space 330 is flush with the surface of the heat exchange channel 342 facing the accommodating space 330, the limiting protrusion 312 and the heat exchange channel 342 can simultaneously provide support to the battery cell, thereby improving the stability of the relative position between the battery cell and the shell body 302, thereby further improving the reliability of the battery.

[0084] Optionally, when a battery cell is arranged in the shell 30, the surface of the limiting protrusion 312 facing the accommodating space 330 and the surface of the heat exchange channel 342 facing the accommodating space 330 are both provided with an adhesive layer, so that the battery cell can be bonded to the limiting protrusion 312 and the heat exchange channel 342 at the same time through the adhesive layer. On the one hand, the distance between the battery cell and the heat exchange channel 342 can be reduced, thereby improving the heat exchange effect of the heat exchange component 340; on the other hand, by simultaneously providing support to the battery cell by the limiting protrusion 312 and the heat exchange channel 342, the stability of the relative position between the battery cell and the shell 30 can be improved.

[0085] Optionally, the surface of the limiting protrusion 312 facing the accommodating space 330 and the surface of the heat exchange channel 342 facing the accommodating space 330 are not strictly flush in the geometric sense. As long as the surface of the limiting protrusion 312 facing the accommodating space 330 and the surface of the heat exchange channel 342 facing the accommodating space 330 are flush within the manufacturing error range, for example, if the height difference between the surface of the limiting protrusion 312 facing the accommodating space 330 and the surface of the heat exchange channel 342 facing the accommodating space 330 is between 0 and 10 mm, it can be considered that the surface of the limiting protrusion 312 facing the accommodating space 330 and the surface of the heat exchange channel 342 facing the accommodating space 330 are flush.

[0086] In some embodiments, the containing tank 311 further includes a second containing tank 311 b located on one side of the first containing tank 311 a in the first direction Y, and at least a portion of the current collector 341 is located in the second containing tank 311 b.

[0087] In these embodiments, the second accommodating groove 311b can also provide a limit for the current collector 341, thereby improving the relative position stability between the current collector 341 and the shell body 302, and further improving the relative position stability between the entire heat exchange component 340 and the shell body 302.

[0088] Optionally, the number of the second containing grooves 311 b matches the number of the current collectors 341 , so that at least a portion of each current collector 341 can be accommodated in the second containing grooves 311 b .

[0089] In some embodiments, two current collectors 341 are connected to the two ends of the heat exchange channel 342 in the first direction Y, and the two second accommodating grooves 311b are located on both sides of the first accommodating groove 311a in the first direction Y. Each current collector 341 is located in each second accommodating groove 311b, wherein the depth of the second accommodating groove 311b is greater than the depth of the first accommodating groove 311a, so as to form a recessed portion 350 between the two second accommodating grooves 311b on the side of the bottom plate 310 away from the accommodating space 330, and the shell 30 also includes an outer beam 360, and at least part of the outer beam 360 is located in the recessed portion 350.

[0090] In these embodiments, by making the depth of the first accommodating groove 311a greater than the depth of the second accommodating groove 311b, a larger space can be provided for the current collector 341, so that the current collector 341 can be more accommodated in the second accommodating groove 311b, and a recess 350 can be formed between the two second accommodating grooves 311b, and at least part of the outer beam 360 is located in the recess 350. On the one hand, the recess 350 can provide a limit for the outer beam 360, thereby improving the stability of the relative position between the outer beam 360 and the shell body 302; on the other hand, it can also reduce the space occupied by the outer beam 360 in the height direction Z, reduce the overall height of the shell 30, and improve the energy density of the battery.

[0091] Optionally, two current collectors 341 are connected to both ends of the heat exchange channel 342 in the first direction Y, and the heat exchange medium can flow in the two current collectors 341 and the multiple heat exchange channels 342 connected between the two current collectors 341 .

[0092] Optionally, the extension dimension of the current collector 341 along the height direction Z of the shell 30 is larger than the extension dimension of the commutation channel in the height direction Z, so that the internal space of the current collector 341 is larger and the size of the current collector 341 and the size of the second accommodating groove 311b are more adapted.

[0093] Optionally, the outer beam 360 includes two longitudinal beams 361 arranged side by side along the first direction X and a plurality of transverse beams 362 connected between the two longitudinal beams 361 and spaced apart along the first direction Y. Optionally, a connecting edge 363 is connected to the side of the longitudinal beam 361 facing away from the transverse beam 362, and the longitudinal beam 361 is connected to the bottom plate 310 via the connecting edge 363.

[0094] In some embodiments, the shell 30 also includes a module beam 370, which extends along the first direction X and is arranged on the side of the heat exchange component 340 away from the bottom plate 310. The module beam 370 includes a beam body 371 and a flange 372 connected to the beam body 371. The flange 372 is located on the side of the limiting protrusion 312 facing the accommodating space 330 and is connected to the limiting protrusion 312.

[0095] In these embodiments, a module beam 370 is added. The module beam 370 is located on the side of the heat exchange component 340 facing away from the base plate 310 and is connected to the limiting protrusion 312 of the base plate 310 via a flange 372. This allows the module beam 370 to secure the heat exchange component 340 to the base plate 310, eliminating the need for welding or other processes to secure the heat exchange component 340 to the base plate 310. This improves the reliability of the battery due to poor welding between the heat exchange component 340 and the housing body 302. Furthermore, the connection of the flange 372 to the limiting protrusion 312 can also reduce the risk of the flange 372 damaging the heat dissipation channel.

[0096] Optionally, when the number of heat exchange channels 342 is more than three, the number of limiting protrusions 312 is more than two, and the number of flanges 372 on the same side of the beam body 371 can also be more than two. The more than two flanges 372 are arranged at intervals on the same side of the beam body 371, and each flange 372 is connected to each limiting protrusion 312.

[0097] Optionally, two adjacent limiting protrusions 312 enclose and form a first accommodating groove 311 a.

[0098] In some embodiments, the surface of the limiting protrusion 312 facing the accommodating space 330 is recessed to form a groove 312 a , and the flange 372 is located in the groove 312 a .

[0099] In these embodiments, a groove 312a is provided on the limiting protrusion 312, and the flange 372 located in the groove 312a can improve the effect of the flange 372 protruding from the surface of the limiting protrusion 312 on the size of the accommodating space 330, and can also improve the friction of the flange 372 on the battery cells in the accommodating space 330.

[0100] Optionally, the shape of the groove 312a is adapted to the shape of the flange 372, so that the flange 372 can be better accommodated in the groove 312a, which can reduce the height difference between the surface of the flange 372 facing away from the base plate 310 and the surface of the heat exchange channel 342 facing away from the base plate 310, thereby improving the energy density of the battery.

[0101] In some embodiments, the beam body 371 is protruded from the flange 372 toward the accommodating space 330 .

[0102] In these embodiments, the beam body 371 protrudes from the flange 372 , and the battery cell can be arranged on one side of the beam body 371 , so that the beam body 371 can provide a limit for the battery cell and improve the stability of the relative position between the battery cell and the shell 30 .

[0103] Optionally, multiple battery cells are combined to form a battery module, and a limiting beam is provided on one side of the battery module. The limiting beam can be interconnected with the beam body 371, so that the limiting beam, the beam body 371 and the bottom plate 310 enclose a space for accommodating the battery module. The limiting beam, the beam body 371 and the bottom plate 310 jointly provide limitation for the battery module.

[0104] There are many ways to set the number of module beams 370. There can be one or more module beams 370. One module beam 370 can be set on the side of the heat exchange channel 342 or the current collector 341 away from the bottom plate 310.

[0105] In some optional embodiments, the module beam 370 includes an end module beam 370a, which is located on the side of the collector 341 away from the bottom plate 310, and the end module beam 370a includes a first connecting edge 373 connected to the side of its beam body 371 away from the flange 372, and the first connecting edge 373 is connected to the end plate 320.

[0106] In these embodiments, by providing an end module beam 370a, the end module beam 370a is connected to the end plate 320 through the first connecting edge 373 and is connected to the bottom plate 310 through the flange 372, which can improve the stability of the relative position between the heat exchange component 340 and the shell body 302.

[0107] The end module beam 370a is a type of module beam 370. When there is only one module beam 370, the module beam 370 is the end module beam 370a. When there are multiple module beams 370, one of the multiple module beams 370 is the end module beam 370a.

[0108] In some embodiments, the module beam 370 includes a middle module beam 370b, which is located on the side of the heat exchange channel 342 away from the bottom plate 310. The middle module beam 370b includes two beam bodies 371 spaced apart along the first direction Y and a second connecting edge 374 connected between the two beam bodies 371. The beam body 371 protrudes from the second connecting edge 374 toward the accommodating space 330, and the second connecting edge 374 is connected to the limiting protrusion 312.

[0109] In these embodiments, the module beam 370 includes a central module beam 370b, which includes two beam bodies 371 and a second connecting edge 374 located between the two beam bodies 371. The central module beam 370b is also connected to the base plate 310 via the second connecting edge 374, thereby improving the relative positional stability between the central module beam 370b and the base plate 310. Furthermore, the two beam bodies 371 can also provide positional constraints for the two groups of battery cells located on either side thereof.

[0110] The middle modular beam 370b is a type of modular beam 370. When there is only one modular beam 370, the modular beam 370 is the middle modular beam 370b. When there are multiple modular beams 370, one of the multiple modular beams 370 is the middle modular beam 370b. Optionally, one of the multiple modular beams 370 is the end modular beam 370a, and another is the middle modular beam 370b. This embodiment of the present application uses an example in which there are two end modular beams 370a and one middle modular beam 370b.

[0111] In an embodiment of the present application, the accommodating space 330 can be divided into a space for accommodating two battery modules by the two beam bodies 371 on the middle module beam 370b, and the limiting beams on the outer peripheral sides of the two battery modules are respectively connected to the beam bodies 371 of the two middle module beams 370b.

[0112] In some embodiments of the present application, the present application further provides a battery, comprising a shell 3030 according to any of the first aspects described above and a battery cell 20 located in the shell 3030 .

[0113] In some embodiments of the present application, an electrical device is further provided, comprising a battery according to any one of the above embodiments, and the battery is used to provide electrical energy.

[0114] The power-consuming device may be any of the aforementioned devices or systems using batteries.

[0115] Referring to Figures 3 to 6 , an embodiment of the present application provides a battery housing 3030 for accommodating a battery cell 20. The housing 3030 includes a housing body 302 having a bottom plate 310, an end plate 320 connected to the bottom plate 310, and a receiving space 330 enclosed by the bottom plate 310 and the end plate 320. The bottom plate 310 has a recessed surface facing the receiving space 330 to form a receiving groove 311. A heat exchange component 340 is located in the receiving space 330, with at least a portion of the heat exchange component 340 located within the receiving groove 311. The heat exchange component 340 includes a current collector 341 and heat exchange channels 342 connected to the current collector 341, with at least two heat exchange channels 342 spaced apart along a first direction X. The receiving grooves 311 include at least two first receiving grooves 311a spaced apart along the first direction X, with at least a portion of each heat exchange channel 342 located within each first receiving groove 311a. The bottom plate 310 further includes a limiting protrusion 312 located between two adjacent first accommodating grooves 311a. The surface of the limiting protrusion 312 facing the accommodating space 330 is flush with the surface of the heat exchange channel 342 facing the accommodating space 330. The accommodating grooves 311 further include a second accommodating groove 311b located to one side of the first accommodating groove 311a in the first direction Y. At least a portion of the current collector 341 is located in the second accommodating groove 311b. The first direction Y intersects the first direction X. The two current collectors 341 are connected to the two ends of the heat exchange channel 342 in the first direction Y, and the two second accommodating grooves 311b are located on both sides of the first accommodating groove 311a in the first direction Y. Each current collector 341 is located in each second accommodating groove 311b, wherein the depth of the second accommodating groove 311b is greater than the depth of the first accommodating groove 311a, so as to form a recessed portion 350 between the two second accommodating grooves 311b on the side of the bottom plate 310 away from the accommodating space 330. The shell 30 also includes an outer beam 360, and at least part of the outer beam 360 is located in the recessed portion 350. The housing 30 also includes a module beam 370, which extends along the first direction X and is disposed on the side of the heat exchange component 340 facing away from the base plate 310. The module beam 370 includes a beam body 371 and a flange 372 connected to the beam body 371. The flange 372 is located on the side of the limiting protrusion 312 facing the accommodating space 330 and is connected to the limiting protrusion 312. The surface of the limiting protrusion 312 facing the accommodating space 330 is recessed to form a groove 312a, and the flange 372 is located within the groove 312a. The module beam 370 includes an end module beam 370a, which is located on the side of the current collector 341 facing away from the base plate 310. The end module beam 370a includes a first connecting edge 373 connected to the side of the beam body 371 facing away from the flange 372. The first connecting edge 373 is connected to the end plate 320.The module beam 370 includes a middle module beam 370b, which is located on the side of the heat exchange channel 342 away from the bottom plate 310. The middle module beam 370b includes two beam bodies 371 arranged at intervals along the first direction Y and a second connecting edge 374 connected between the two beam bodies 371. The beam body 371 protrudes from the second connecting edge 374 toward the accommodating space 330, and the second connecting edge 374 is connected to the limiting protrusion 312.

[0116] 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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 housing, the housing being used to accommodate a battery cell, wherein: The housing comprises: The shell body comprises a bottom plate, an end plate connected to the bottom plate, and a receiving space formed by the bottom plate and the end plate, wherein a surface of the bottom plate facing the receiving space is concave to form a receiving groove; The heat exchange component is located in the accommodating space, and at least a portion of the heat exchange component is located in the accommodating groove.

2. The housing according to claim 1, wherein: The heat exchange component includes a current collector and a heat exchange channel connected to the current collector, and at least one of the current collector and the heat exchange channel is located in the accommodating tank.

3. The housing according to claim 2, wherein: The two or more heat exchange channels are arranged at intervals along the first direction; The containing grooves include more than two first containing grooves, the more than two first containing grooves are arranged at intervals along the first direction, and at least a part of each of the heat exchange channels is located in each of the first containing grooves.

4. The housing according to claim 3, wherein: The bottom plate further includes a limiting protrusion located between two adjacent first accommodating grooves, and a surface of the limiting protrusion facing the accommodating space is flush with a surface of the heat exchange channel facing the accommodating space.

5. The housing according to any one of claims 3 to 4, wherein: The containing groove further includes a second containing groove located on one side of the first containing groove in the second direction, at least a part of the current collector is located in the second containing groove, and the second direction intersects with the first direction.

6. The housing according to claim 5, wherein: The two current collectors are connected to the two ends of the heat exchange channel in the second direction. The second containing grooves are located on both sides of the first containing groove in the second direction, and each of the current collectors is located in each of the second containing grooves. The depth of the second accommodating groove is greater than the depth of the first accommodating groove, so as to form a recessed portion between the two second accommodating grooves on the side of the bottom plate away from the accommodating space, and the shell also includes an outer beam, at least part of which is located in the recessed portion.

7. The shell according to any one of claims 4 to 6 further includes a module beam, which extends along the first direction and is arranged on the side of the heat exchange component away from the bottom plate, and the module beam includes a beam body and a flange connected to the beam body, and the flange is located on the side of the limiting protrusion facing the accommodating space and is connected to the limiting protrusion.

8. The housing according to claim 7, wherein: The surface of the limiting protrusion facing the accommodating space is sunken to form a groove, and the flange is located in the groove.

9. The housing according to any one of claims 7 to 8, wherein: The beam body is arranged to protrude from the flange toward the accommodating space.

10. The housing according to claim 9, wherein: The module beam comprises: an end module beam, located on a side of the current collector away from the bottom plate, the end module beam comprising a first connecting edge connected to a side of the beam body away from the flange, the first connecting edge being connected to the end plate; and / or, The middle module beam is located on the side of the heat exchange channel away from the bottom plate. The middle module beam includes two beam bodies spaced apart along the second direction and a second connecting edge connected between the two beam bodies. The beam body protrudes from the second connecting edge toward the accommodating space, and the second connecting edge is connected to the limiting protrusion.

11. A battery, wherein: The invention comprises the shell according to any one of claims 1 to 10 and a battery cell located in the shell.

12. An electrical device, wherein: A battery according to claim 11, for providing electrical energy.

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