Shell, battery and electric device

Abstract

The utility model provides a shell, a battery and an electric device. The shell comprises a bottom plate and a limiting assembly, wherein the bottom plate is used for supporting the single battery. And the limiting assembly is arranged on the surface of one side of the bottom plate and is used for limiting the position deviation of the plurality of single batteries. And the two end plates and the bottom plate are enclosed to form an accommodating space for accommodating the battery monomers. The limiting assembly further comprises first limiting pieces arranged between every two adjacent end plates, the first limiting pieces can be used for dividing the containing space into subspaces, and the subspaces can be used for containing the same battery module. A first supporting part is arranged on the surface of the side, facing the limiting assembly, of the bottom plate in a protruding mode, the side, facing the bottom plate, of the first limiting piece is sunken to form a limiting groove, and the multiple single batteries are limited between the end plate and the first limiting piece. And when a certain battery monomer is abnormal, the plurality of battery monomers positioned on the same side of the first limiting piece can be disassembled without disassembling the whole battery pack, so that the energy can be saved, and the problem of high repair difficulty can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a housing, a battery and an electrical device. Background Art

[0002] In recent years, new energy vehicles have developed rapidly around the world, and the market share of new energy vehicles has increased rapidly. At the same time, people have put forward higher requirements for vehicle endurance, fast charging, and mechanical safety.

[0003] In order to ensure the strength of the battery module and the stability under vibration and impact, and reduce the occurrence of safety accidents such as battery shell damage, various limit structures are used to fix the mechanical structure to improve the stability of the battery module and battery under vibration conditions. In the prior art, it is difficult to repair a damaged battery cell. Utility Model Content

[0004] In view of the above problems, the present application provides a housing, a battery and an electrical device, which can improve the problem of difficulty in repair.

[0005] In a first aspect, the present application provides a battery shell, which is used to accommodate battery cells. The shell includes: a base plate; a limit assembly, which is arranged on a surface on one side of the base plate, the limit assembly includes at least two end plates and a first limit piece arranged between two adjacent end plates, the first limit piece and the end plate are arranged at intervals, wherein a first support portion is protruding from a surface of one side of the base plate facing the limit assembly, and the first limit piece is recessed on a side of the base plate to form a limit groove, and the first support portion and the limit groove are snap-fitted.

[0006] In the scheme of the embodiment of the present application, the present application provides a battery shell, the shell is used to accommodate battery cells, the shell includes a bottom plate and a limit assembly, and the bottom plate is used to support the battery cells. The limit assembly is arranged on the surface of one side of the bottom plate and is used to limit the position of multiple battery cells from being offset. The limit assembly includes at least two end plates, and the two end plates and the bottom plate are enclosed to form a receiving space for accommodating battery cells. The limit assembly also includes a first limiter arranged between two adjacent end plates, and the first limiter can be used to separate the receiving space into subspaces, and each subspace can be used to set the same battery module. A first support portion is protruding from a surface of one side of the bottom plate facing the limit assembly, and the first limiter is recessed toward one side of the bottom plate to form a limit groove. Through the snap-fit ​​of the first support portion and the limit groove, multiple battery cells can be limited between the end plate and the first limiter. When a battery cell is abnormal, multiple battery cells on the same side of the first limiter can be disassembled without disassembling the entire battery pack, which can save energy and improve the problem of difficulty in rework.

[0007] In some embodiments, the shell further includes a heat exchange plate, which is located between the bottom plate and the first limiting member, and the heat exchange plate is provided with a first slot, and the first support portion is snap-fitted with the first slot and the limiting slot.

[0008] In the technical solution of the embodiment of the present application, the housing further comprises a heat exchange plate, which is located between the bottom plate and the first stopper and can directly exchange heat with the battery cells located on the bottom plate. A first card slot is provided on the heat exchange plate, so that the first support portion can be snap-fitted with the stopper slot via the first card slot, so that the heat exchange plate does not affect the fit between the first support portion and the stopper slot.

[0009] In some embodiments, the length of the first supporting portion in the first direction is greater than the depth of the limiting groove in the first direction, so as to form a gap between the heat exchange plate and the bottom plate.

[0010] In the technical solution of the embodiment of the present application, the length of the first support portion in the first direction is greater than the depth of the limiting groove in the first direction. The battery module can be lifted by the first support portion and the limiting groove, so that a bottom gap is formed between the heat exchange plate and the bottom plate, thereby improving the heat dissipation effect of the battery module. At the same time, when the battery is subjected to vibration and impact conditions, the battery cells will not collide with the bottom plate to cause damage to the battery cells and the bottom plate, thereby buffering the vibration and impact.

[0011] In some embodiments, two first slots are spaced apart on both sides of the heat exchange plate along the second direction, there are two first support portions, and the two first support portions are snap-fitted with the two first slots and the limiting slots.

[0012] In the technical solution of the embodiment of the present application, two first slots are arranged at intervals on both sides of the heat exchange plate along the second direction, and the two first support parts are snap-fitted with the two first slots and the limit slots. Both sides of the battery module are lifted by the first support parts and fixed by the first support parts and the limit slots, so that the support force on the battery module is more stable and balanced.

[0013] In some embodiments, the heat exchange plate includes a main body and an interface disposed on the main body. The interface extends from the main body along the third direction and extends out of the end plate, and the two interfaces are located on both sides of the main body along the second direction. The interface is used to input or output a heat exchange medium to dissipate heat from the battery module.

[0014] In the technical solution of the embodiment of the present application, the heat exchange plate also includes a main body and an interface provided on the main body, the two interfaces are located on both sides of the main body along the second direction, and the interfaces are used to input or output heat exchange medium so that the heat exchange plate performs heat exchange to dissipate heat from the battery module. The interface extends from the main body along the third direction and extends out of the end plate, so that the interface can be connected to the outside outside the accommodation space, without affecting the size of the accommodation space, and can improve the energy density of the battery.

[0015] In some embodiments, an abutment portion is provided on one side of the end plate away from the first limiting member, the bottom plate further includes a second supporting portion, the second supporting portion and the abutment portion abut against each other to support the end plate, and the interface and the abutment portion are arranged side by side along the second direction.

[0016] In the technical solution of the embodiment of the present application, the abutment portion is arranged on the side of the end plate away from the first limiter, and the bottom plate also includes a second support portion. The second support portion and the abutment portion of the end plate abut against each other to support the end plate, that is, the battery module is supported in all directions, thereby ensuring the uniformity of the bottom gap and further improving the strength of the battery module. The interface and the abutment portion are arranged side by side along the second direction to reduce the overall size of the battery in the second direction and improve the energy density.

[0017] In some embodiments, the limiting assembly also includes a side plate, the two side plates are spaced apart along the second direction, the side plates, the end plates and the heat exchange plate together form a accommodating space for accommodating the battery cells, the side plate has a supporting portion extending toward the accommodating space at one end in the first direction, and the heat exchange plate and the supporting portion are connected to each other.

[0018] In the technical solution of the embodiment of the present application, the limiting assembly also includes a side plate, and the two side plates are arranged at intervals along the second direction. The side plates, the end plates and the heat exchange plate are enclosed to form a storage space for accommodating the battery cells. A supporting portion extends out from one end of the side plate in the first direction to form an "L-shaped" side plate. The heat exchange plate and the supporting portion are connected to each other, and the heat exchange plate is arranged on the side of the supporting portion facing the storage space, which can improve the stability of the position of the heat exchange plate and improve the problem that the heat exchange plate is easy to move relative to the battery cell, affecting its heat exchange efficiency. The "L-shaped" side plate can better support the heat exchange plate, and the side plate has a better supporting capacity. Therefore, the side plate and the heat exchange plate are not easy to loosen, and the heat exchange plate has a better supporting capacity for the battery cell. The heat exchange plate and the side plate cooperate to form a "U-shaped" basin structure to accommodate the battery cell, making the shell structure more stable.

[0019] In some embodiments, a first groove is formed on one side of the supporting portion facing the heat exchange plate, and at least a portion of the heat exchange plate is embedded in the first groove.

[0020] In the technical solution of the embodiment of the present application, a first groove is formed on one side of the supporting portion facing the heat exchange plate, and at least part of the heat exchange plate is embedded in the first groove. The first groove can provide the heat exchange plate with a limit in both the first direction and the second direction, which can not only meet the supporting capacity of the side plate for the heat exchange plate, but also improve the problem of the heat exchange plate moving to the bottom gap, and when the battery module needs to be replaced, the disassembly and assembly of the side plate and the heat exchange plate is more convenient and quick.

[0021] In some embodiments, the heat exchange plate further includes a heat exchange portion, a connecting portion and a bending portion, the connecting portion is located on both sides of the heat exchange portion in the second direction, and the connecting portion is recessed toward the side of the heat exchange portion close to the bottom plate, the bending portion connects the heat exchange portion and the connecting portion, and the connecting portion is located in the first groove, wherein the surface of the heat exchange portion facing the accommodating space is flush with the surface of the supporting portion facing the accommodating space.

[0022] In the technical solution of the embodiment of the present application, the heat exchange plate also includes a heat exchange part, a connecting part and a bending part. The connecting part is recessed toward the side of the heat exchange part close to the bottom plate, so that when the connecting part is embedded in the first groove, the surface of the heat exchange part facing the accommodating space is flush with the surface of the supporting part facing the accommodating space, providing a flatter supporting surface, so that the supporting part can also be used to place battery cells, and multiple battery cells can be stably placed in the plane, thereby improving the energy density of the battery cells.

[0023] In some embodiments, the limiting assembly further comprises a steel belt, which is disposed around the end plate and the first limiting member.

[0024] In the technical solution of the embodiment of the present application, the limit assembly also includes a steel belt arranged around the end plate and the first limiter, which can provide a limit for the battery cell and resist the vibration impact from the surrounding side of the battery module. While ensuring the strength of the battery module, the volume of the steel belt is smaller than that of the side plate, and the cost is lower.

[0025] In some embodiments, the limiting assembly further includes a top steel belt, which is located on a side of the first limiting member away from the bottom plate and connected to the end plate.

[0026] In the technical solution of the embodiment of the present application, the limit assembly further includes a top steel belt located on the side of the first limit member away from the bottom plate, and the top steel belt is fixedly connected to the end plate to make the battery module structure more compact. The top steel belt further strengthens the strength of the battery module and improves the possibility of deformation due to top intrusion.

[0027] In some embodiments, a plurality of limiting components are spaced apart and distributed on the bottom plate, and there are a plurality of first supporting portions, and each first supporting portion is snap-fitted with each limiting slot via each first slot.

[0028] In the technical solution of the embodiment of the present application, a plurality of battery modules are arranged at intervals on the bottom plate, and there are multiple groups of first support parts, first slots and limit slots. The battery modules are fixed by snapping together each first support part through each first slot and each limit slot, and the plurality of battery modules form a battery for storing and providing electric energy.

[0029] In a second aspect, an embodiment of the present application further provides a battery, comprising a shell according to any of the first aspects described above and a battery cell located in the shell.

[0030] In a third aspect, an embodiment of the present application further provides an electrical device, comprising the battery of the above-mentioned second aspect embodiment, and the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of the structure of a battery provided in one embodiment of the present application;

[0034] Figure 3 This is one of the structural schematic diagrams of a battery housing provided in one embodiment of the present application;

[0035] Figure 4 This is the second structural schematic diagram of a battery housing provided by an embodiment of the present application;

[0036] Figure 5 This is a third structural schematic diagram of a battery housing provided in one embodiment of the present application;

[0037] Figure 6 This is a fourth structural schematic diagram of a battery housing provided in one embodiment of the present application;

[0038] Figure 7 yes Figure 6 The enlarged view of point A in the middle;

[0039] Figure 8 yes Figure 5 The enlarged view of point B in the middle;

[0040] Fig. 9 This is a fifth structural schematic diagram of a battery housing provided in one embodiment of the present application;

[0041] Fig.10 This is the sixth structural schematic diagram of a battery casing provided in one embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1. Vehicle; 101. Motor; 102. Controller;

[0044] 2. Battery; 201. Battery module;

[0045] 3. Battery cells;

[0046] 4. Shell; 401. Bottom plate; 402. First supporting portion; 403. Second supporting portion;

[0047] 5. end plate; 501. first stopper; 502. hollow portion; 502a. through hole; 502b. mounting hole; 503. stopper groove; 504. gap; 505. abutment portion; 506. stopper assembly;

[0048] 6. heat exchange plate; 601. first slot; 602. main body; 603. interface; 604. heat exchange part; 605. connection part; 606. bending part;

[0049] 7. Side plate; 701. Accommodation space; 702. Supporting portion; 703. First groove; 704. Second groove;

[0050] 8. Steel belt; 801. Top steel belt;

[0051] X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and 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.

[0055] 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.

[0056] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two).

[0057] 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 ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and 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. Moreover, a first feature being "above", "above" or "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 higher in level than the second feature. A first feature being "below", "below" or "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 lower in level than the second feature.

[0059] 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.

[0060] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0061] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0062] 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 mainly works by the movement of metal ions between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The positive current collector includes a positive current collector and a positive electrode ear connected to the positive current collector. The positive current collector is coated with a positive active material layer, and the positive electrode ear is not coated with a 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, the negative active material layer is coated on the surface of the negative current collector; the negative current collector includes a negative current collector and a negative electrode tab connected to the negative current collector, the negative current collector is coated with the negative active material layer, and the negative electrode tab is not coated with the negative active material layer. The material of the negative current collector can be copper, the negative active material layer includes a negative active material, and the negative active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0063] During the research, the inventor found that in the prior art, in order to prevent safety accidents such as battery disintegration and battery shell damage, structural adhesive is usually used to bond the battery cells to the bottom plate during the process of secondary battery assembly, and then fixed by mechanical structures such as end plates and side plates to improve the stability of the battery module and battery under vibration conditions. Since the battery cells are glued to the bottom plate, it is difficult to repair the damaged battery cells, and the entire battery may need to be replaced.

[0064] Based on the above problems, the present application provides a battery shell, which is used to accommodate battery cells. The shell includes: a limit assembly is arranged on the surface of one side of the bottom plate and is used to limit the position deviation of multiple battery cells. The limit assembly includes at least two end plates and a first limit piece arranged between two adjacent end plates, and the first limit piece and the end plate are spaced apart. A first support portion is protrudingly provided on the surface of one side of the bottom plate facing the limit assembly, and the first limit piece is recessed toward one side of the bottom plate to form a limit groove. The battery module is mounted on the bottom plate by snap-fitting the first support portion and the limit groove, and the battery module is detachably connected to the bottom plate. When an abnormality occurs in a battery cell, only a single battery module needs to be replaced without disassembling the entire package, which saves energy and reduces the difficulty of rework.

[0065] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0066] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; 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, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0067] 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.

[0068] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1 provided for some embodiments of the present application. Vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 2 is provided inside the vehicle 1, and the battery 2 may be provided at the bottom, head or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1, for example, the battery 2 may be used as an operating power source for the vehicle 1. The vehicle 1 may also include a controller 102 and a motor 101, and the controller 102 is used to control the battery 2 to power the motor 101, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0069] In some embodiments of the present application, the battery 2 can be used not only as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0070] In order to meet different power usage requirements, the battery 2 may include a plurality of battery cells 3, where the battery cell 3 refers to the smallest unit that constitutes the battery module 201 or the battery 2. The plurality of battery cells 3 can be connected in series and / or in parallel via electrode terminals for use in various applications. The battery 2 mentioned in the present application includes a battery module 201 or a battery 2. Among them, the plurality of battery cells 3 can be connected in series, in parallel, or in mixed connection, where mixed connection refers to a mixture of series and parallel connection. In the embodiments of the present application, the plurality of battery cells 3 can directly constitute the battery 2, or they can first constitute the battery module 201, and the battery module 201 can then constitute the battery 2.

[0071] Figure 2 A schematic structural diagram of a battery 2 according to an embodiment of the present application is shown.

[0072] Figure 3 A schematic structural diagram of a battery 2 housing 4 according to an embodiment of the present application is shown.

[0073] like Figure 2 and Figure 3 As shown, the battery 2 includes a shell 4 and a battery cell 3 located in the shell 4. The shell 4 can be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres, which is not limited in the present embodiment. The shell 4 can be made of alloy materials such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, or a composite material such as glass fiber plus epoxy resin, which is not limited in the present embodiment.

[0074] Optionally, multiple battery cells 3 can be connected in series, in parallel, or in hybrid connection. Hybrid connection means that multiple battery cells 3 are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in hybrid connection, and then the whole formed by multiple battery cells 3 is accommodated in the shell; of course, multiple battery cells 3 can also be connected in series, in parallel, or in hybrid connection to form a battery unit, and then multiple battery units are connected in series, in parallel, or in hybrid connection to form a whole and accommodated in the shell.

[0075] Optionally, the battery cell 3 also 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 3 may also include an end cap covered at the opening of the shell. The shell and the end cap may be independent components, and an opening may be provided on the shell, and the internal environment of the battery cell is formed by covering the opening with the end cap at the opening. 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 put into the shell, and 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.

[0076] In the present application, the battery cell 3 may include a lithium-ion battery cell 3, a sodium-ion battery cell 3, or a magnesium-ion battery cell 3, etc., and the embodiments of the present application are not limited thereto. The battery cell 3 may be cylindrical, or in other shapes, etc. However, for the sake of simplicity, the following embodiments are all described by taking a square battery cell 3 as an example. A square battery cell 3 refers to a battery cell 3 having a quadrangular prism shape.

[0077] Please also read Figure 3 to Figure 4 The embodiment of the first aspect of the present application provides a shell 4 of a battery 2, and the shell 4 includes: a bottom plate 401 and a limiting assembly 506. The limiting assembly 506 is arranged on the surface of one side of the bottom plate 401, and the limiting assembly 506 includes at least two end plates 5 and a first limiting member 501 arranged between two adjacent end plates 5, and the first limiting member 501 and the end plates 5 are arranged at intervals, wherein a first support portion 402 is protrudingly provided on a side surface of the bottom plate 401 facing the limiting assembly 506, and the first limiting member 501 is recessed toward one side of the bottom plate 401 to form a limiting groove 503, and the first supporting portion 402 and the limiting groove 503 are snap-fitted.

[0078] In the scheme of the embodiment of the present application, the present application provides a shell 4 of a battery 2, the shell 4 is used to accommodate a battery cell 3, and the shell 4 includes: a bottom plate 401 and a limit assembly 506, and the bottom plate 401 is used to support the battery cell 3. The limit assembly 506 is arranged on the surface of one side of the bottom plate 401 and is used to limit the position of multiple battery cells 3 from being offset. The limit assembly 506 includes at least two end plates 5, and the two end plates 5 and the bottom plate 401 are enclosed to form a receiving space 701 for accommodating the battery cell 3. The limit assembly 506 also includes a first limit member 501 arranged between two adjacent end plates 5, and the first limit member 501 can be used to divide the receiving space 701 into sub-spaces, and each sub-space can be used to set the same battery module 201. A first support portion 402 is protruding from a surface of one side of the bottom plate 401 facing the limit assembly 506, and the first limit member 501 is recessed toward one side of the bottom plate 401 to form a limit groove 503. Through the snap fit between the first support portion 402 and the limiting groove 503, multiple battery cells 3 can be limited between the end plate 5 and the first limiting member 501. When a battery cell 3 is abnormal, multiple battery cells 3 on the same side of the first limiting member 501 can be removed without disassembling the entire battery 2, which can save energy and improve the problem of difficulty in repair.

[0079] Optionally, a plurality of battery cells 3 located on the same side of the first limiting member 501 are combined to form a battery module 201 .

[0080] The appearance and structure of the battery 2 are relatively basic and key components of electric vehicles. The structural strength of the battery housing 4 is the guarantee for the safe and stable operation of the battery 2. The battery 2 is usually fixed to the whole vehicle by a hanging point installation method, that is, it is fixed to the whole vehicle by a mounting member through a mounting bolt. In the related art, the lower end of the mounting member is connected to the base plate 401, and the upper end is connected to the vehicle body through a mounting bolt to achieve the mounting of the battery 2. Optionally, the first limiter 501 in the present application can be a mounting member and is provided with a through hole 502a that is set through along the first direction X, and can be locked and mounted with the vehicle body 1 through the through hole 502a. Optionally, there are at least two through holes 502a, and at least two through holes 502a are arranged on the first limiter 501 at intervals along the second direction Y, so that the mounting force is more uniform and the strength of the battery 2 is increased.

[0081] Optionally, two mounting holes 502b are provided on both sides of the through hole 502a along the second direction Y, and the first stopper 501 and the first support portion 402 are fixed by bolts to increase the connection strength between the first stopper 501 and the first support portion 402. When an abnormality occurs to the battery cell 3, the single battery module 201 can also be easily disassembled without disassembling the entire battery 2, thus saving energy.

[0082] Optionally, the first position-limiting member 501 is provided with a hollow portion 502 extending through the second direction Y, and the hollow portion 502 is located on a side of the position-limiting groove 503 away from the first support portion 402. The hollow portion 502 makes the first position-limiting member 501 lighter, saves energy and materials, and saves costs.

[0083] Optionally, the two hollow portions 502 are spaced apart along the third direction Z, so as to reduce the weight of the first position-limiting member 501 while providing sufficient strength to reduce the risk of deformation of the first position-limiting member 501 when subjected to impact.

[0084] Optional, for clearer display Figure 3 Only half of the battery module 201 is shown in the housing 4, and the two battery modules 201 are located on both sides of the first stopper 501. Optionally, the same housing 4 can be provided with the first stopper 501. For example, Figure 3 The battery modules 201 may be arranged in two rows and two columns along the second direction Y and the third direction Z, and a first limiting member 501 may be arranged between two adjacent battery modules 201 along the third direction Z.

[0085] In some embodiments, Figure 5 to Figure 6 As shown, the shell 4 also includes a heat exchange plate 6, which is located between the bottom plate 401 and the first limiting member 501. The heat exchange plate 6 is provided with a first slot 601, and the first support portion 402 is snap-fitted via the first slot 601 and the limiting slot 503.

[0086] In these embodiments, the housing 4 further includes a heat exchange plate 6, which is located between the bottom plate 401 and the first stopper 501 and can directly exchange heat with the battery cells 3 located on the bottom plate 401. The heat exchange plate 6 is provided with a first slot 601, so that the first support portion 402 can be snap-fitted with the stopper slot 503 via the first slot 601, so that the heat exchange plate 6 does not affect the fit between the first support portion 402 and the stopper slot 503.

[0087] There are many ways to set the heat exchange plate 6. The heat exchange plate 6 can be used to accommodate a heat exchange medium, and use the heat exchange medium to heat the battery cells 3 in the accommodation space 701, or use the heat exchange medium to dissipate heat from the battery cells 3 in the accommodation space 701. The embodiment of the present application takes the heat exchange plate 6 as a water-cooled plate as an example for illustration. The heat exchange plate 6 can be used to accommodate a heat exchange medium.

[0088] Optionally, the heat exchange plate 6 may be fixedly connected to the end plate 5. The connection method may be riveting, welding, etc., and the connection method is not specifically limited, as long as the end plate 5 can be fixed to the heat exchange plate 6 without affecting the performance of the heat exchange plate 6.

[0089] Optionally, the heat exchange plate 6 may be in contact with and connected to the first stopper 501. Optionally, the heat exchange plate 6 may be fixedly connected to the first stopper 501 to further stop the battery cell 3. The heat exchange plate 6 may be connected to the first stopper 501 by gluing, welding, etc. The connection method between the heat exchange plate 6 and the first stopper 501 is not specifically limited, as long as the first stopper 501 can be fixed to the heat exchange plate 6 and does not affect the performance of the heat exchange plate 6.

[0090] Optionally, when a battery cell 3 is arranged in the shell 4, a glue layer is provided on the surface of the heat exchange plate 6 facing the accommodating space 701, so that the battery cell 3 can be bonded to the heat exchange plate 6 through the glue layer. On the one hand, it can reduce the distance between the battery cell 3 and the heat exchange plate 6 and improve the heat exchange efficiency of the heat exchange plate 6. At the same time, it can improve the stability of the relative position between the battery cell 3 and the heat exchange plate 6.

[0091] In some embodiments, Figure 6 and Figure 7 As shown, the length of the first supporting portion 402 in the first direction X is greater than the depth of the limiting groove 503 in the first direction X, so as to form a gap 504 between the heat exchange plate 6 and the bottom plate 401 .

[0092] In these embodiments, the length of the first support portion 402 in the first direction X is greater than the depth of the limiting groove 503 in the first direction X, and the battery module 201 can be lifted by the first support portion 402 and the limiting groove 503, so that a bottom gap 504 is formed between the heat exchange plate 6 and the bottom plate 401, thereby improving the heat dissipation effect of the battery module 201. At the same time, when the battery 2 is subjected to vibration and impact conditions, the battery cell 3 will not collide with the bottom plate 401 to cause damage to the battery cell 3 and the bottom plate 401, thereby buffering the vibration and impact.

[0093] In some embodiments, two first slots 601 are spaced apart on both sides of the heat exchange plate 6 along the second direction Y, there are two first support portions 402 , and the two first support portions 402 are snap-fitted via the two first slots 601 and the limiting grooves 503 .

[0094] In these embodiments, two first slots 601 are spaced apart on both sides of the heat exchange plate 6 along the second direction Y, and the two first support portions 402 are snap-fitted via the two first slots 601 and the limiting slots 503. Both sides of the battery module 201 are lifted by the first support portions 402 and fixed by the first support portions 402 and the limiting slots 503, so that the supporting force on the battery module 201 is more stable and balanced.

[0095] In some embodiments, the heat exchange plate 6 includes a body 602 and an interface 603 disposed on the body 602. The interface 603 extends from the body 602 along the third direction Z and extends out of the end plate 5, and the two interfaces 603 are located on both sides of the body 602 along the second direction Y. The interface 603 is used to input or output a heat exchange medium to dissipate heat from the battery module 201.

[0096] In these embodiments, the heat exchange plate 6 further includes a body 602 and an interface 603 disposed on the body 602. The two interfaces 603 are located on both sides of the body 602 along the second direction Y. The interfaces 603 are used to input or output heat exchange medium so that the heat exchange plate 6 performs heat exchange to dissipate heat from the battery module 201. The interface 603 extends from the body 602 along the third direction Z and extends out of the end plate 5, so that the interface can be connected to the outside outside the accommodation space, without affecting the size of the accommodation space, and can improve the energy density of the battery.

[0097] In some embodiments, an abutment portion 505 is provided on the side of the end plate 5 facing away from the first limit member 501, and the base plate 401 also includes a second support portion 403, the second support portion 403 and the abutment portion 505 abut against each other to support the end plate 5, and the interface 603 and the abutment portion 505 are arranged side by side along the second direction Y.

[0098] In these embodiments, the abutment portion 505 is disposed on the side of the end plate 5 away from the first stopper 501, and the bottom plate 401 further includes a second support portion 403. The second support portion 403 abuts against the abutment portion 505 of the end plate 5 to support the end plate, so that the battery module 201 is supported in multiple directions, thereby ensuring the uniformity of the bottom gap 504 and further improving the strength of the battery module 201. The interface 603 and the abutment portion are arranged side by side along the second direction Y to reduce the overall size of the battery 2 in the second direction Y and improve the energy density.

[0099] Optionally, the abutment portion 505 may be in contact with and connected to the second support portion 403. Optionally, the abutment portion 505 may be fixedly connected to the second support portion 403 to further limit the position of the battery cell 3. The abutment portion 505 and the second support portion 403 may be fixedly connected by riveting, welding, etc. The connection method is not specifically limited, as long as the abutment portion 505 can be fixedly connected to the second support portion 403.

[0100] Optionally, the distance between the surface of the abutment portion 505 facing the bottom plate 401 and the surface of the end plate 5 facing the bottom plate 401 is smaller than the extension dimension of the second support portion 403 in the height direction, thereby ensuring the uniformity of the bottom gap 504 .

[0101] In some embodiments, Figure 3 and Figure 8As shown, the limiting assembly 506 also includes a side plate 7, and the two side plates 7 are spaced apart along the second direction Y. The side plate 7, the end plate 5 and the heat exchange plate 6 enclose a receiving space 701 for receiving the battery cell 3. The side plate 7 has a supporting portion 702 extending toward the receiving space at one end in the first direction X, and the heat exchange plate 6 and the supporting portion 702 are connected to each other.

[0102] In these embodiments, the limiting assembly 506 also includes a side plate 7, and the two side plates 7 are spaced apart along the second direction Y. The side plates 7, the end plates 5 and the heat exchange plate 6 enclose a receiving space 701 for receiving the battery cell 3. A supporting portion 702 extends from the side plate 7 at one end in the first direction X to form an "L-shaped" side plate 7. Connecting the heat exchange plate 6 and the supporting portion 702 to each other can improve the stability of the position of the heat exchange plate 6 and improve the problem that the heat exchange plate 6 is easy to move relative to the battery cell 3, thereby affecting its heat exchange efficiency. The "L-shaped" side plate 7 can better support the heat exchange plate 6, and the side plate 7 has a better supporting capacity, so the side plate 7 and the heat exchange plate 6 are not easy to loosen. The heat exchange plate 6 and the side plate 7 cooperate to form a "U-shaped" basin structure to accommodate the battery cell 3, making the structure of the shell 4 more stable.

[0103] Optionally, the heat exchange plate 6 can be arranged on the side of the supporting portion 702 facing the accommodating space 701, and the heat exchange plate 6 can be arranged on the supporting portion 702, so that the side plate 7 and the heat exchange plate 6 are not easy to loosen, and the side plate 7 and the heat exchange plate 6 provide support for the battery cell 3 at the same time.

[0104] Optionally, the side panel 7 has a supporting portion 702 extending at one end in the first direction X to form an "L-shaped" side panel 7, which is not strictly "L-shaped" in a geometric sense, but only indicates that the side panel 7 body extends along the first direction X, and the supporting portion 702 extends along the second direction Y so that its cross-section forms an approximate "L" shape.

[0105] Optionally, the heat exchange plate 6 cooperates with the two side plates 7 to form a "U-shaped" basin structure to accommodate the battery cells 3. It is not strictly "U-shaped" in the geometric sense, but the cross-section after the heat exchange plate 6 and the side plates 7 are connected forms a shape similar to a "U-shape".

[0106] Optionally, the side plate 7 may be fixedly connected to the end plate 5 to further enhance the connection strength of the battery module 201 so that the battery module 201 is not easily deformed when subjected to vibration impact.

[0107] Optionally, the side plate 7 can be in contact with the first stopper 501 to reduce the process steps and facilitate assembly and disassembly. Optionally, the side plate 7 can be fixedly connected to the first stopper 501 to further enhance the connection strength of the battery module 201.

[0108] The side plate 7 and the end plate 5 are fixedly connected or the side plate 7 and the first limit member 501 are fixedly connected by welding, riveting, etc. The connection method is not specifically limited as long as the connection strength of the shell 4 is guaranteed.

[0109] Optionally, a buffer portion may be provided on one side of the end plate 5 facing the accommodating space 701 to improve the stability of the battery cell 3 of the battery module 201 under vibration conditions. Optionally, the buffer portion may be a rubber pad, a sponge, etc., and the type of the buffer portion is not specifically limited, as long as it can provide shock absorption and buffering for the battery module 201 under vibration and impact conditions.

[0110] Optionally, a buffer may be provided on the side of the side plate 7 facing the accommodating space 701 to further improve the stability of the battery module 201 under vibration conditions. Optionally, no buffer may be provided on the side of the side plate 7 facing the accommodating space 701 to save process steps and improve production efficiency.

[0111] In some embodiments, a first groove 703 is formed on one side of the supporting portion 702 facing the heat exchange plate 6 , and at least a portion of the heat exchange plate 6 is embedded in the first groove 703 .

[0112] In these embodiments, the supporting portion 702 is recessed on one side facing the heat exchange plate 6 to form a first groove 703, and at least a portion of the heat exchange plate 6 is embedded in the first groove 703. The first groove 703 can provide the heat exchange plate 6 with position limits in the first direction X and the second direction Y, which can not only meet the supporting capacity of the side plate 7 for the heat exchange plate 6, but also improve the problem of the heat exchange plate 6 moving toward the bottom gap 504. Moreover, when the battery module 201 needs to be replaced, the disassembly and assembly of the side plate 7 and the heat exchange plate 6 is more convenient and quick.

[0113] In some embodiments, the heat exchange plate 6 also includes a heat exchange portion 604, a connecting portion 605 and a bending portion 606, the connecting portion 605 is located on both sides of the heat exchange portion 604 in the second direction Y, and the connecting portion 605 is recessed toward the side of the heat exchange portion 604 close to the bottom plate 401, the bending portion 606 connects the heat exchange portion 604 and the connecting portion 605, and the connecting portion 605 is located in the first groove 703, wherein the surface of the heat exchange portion 604 facing the accommodating space 701 is flush with the surface of the supporting portion 702 facing the accommodating space 701.

[0114] In these embodiments, the heat exchange plate 6 also includes a heat exchange portion 604, a connecting portion 605 and a bending portion 606, and the connecting portion 605 is recessed toward the side of the heat exchange portion 604 close to the bottom plate 401, so that when the connecting portion 605 is embedded in the first groove 703, the surface of the heat exchange portion 604 facing the accommodating space 701 is flush with the surface of the supporting portion 702 facing the accommodating space 701, providing a flatter supporting surface, so that the supporting portion 702 can also be used to place the battery cell 3, and multiple battery cells 3 can be stably placed in the plane, thereby improving the energy density of the battery cell 3.

[0115] Optionally, the bending portion 606 may be spaced apart from the supporting portion 702, that is, the bending portion 606, the connecting portion 605 and the supporting portion 702 enclose a second groove 704. Since a glue layer is provided between the battery cell 3 and the heat exchange plate 6, a thicker glue layer may be provided in the second groove 704 so that the surface of the glue layer facing the accommodation space 701, the surface of the heat exchange portion 604 facing the accommodation space 701 and the surface of the supporting portion 702 facing the accommodation space 701 are flush, thereby better supporting the battery cell 3.

[0116] Optionally, the surface of the heat exchange part 604 facing the receiving space 701 and the surface of the supporting part 702 facing the receiving space 701 are not strictly flush in a geometric sense, as long as the surface of the heat exchange part 604 facing the receiving space 701 and the surface of the supporting part 702 facing the receiving space 701 are flush within the manufacturing error range, for example, if the height difference between the surface of the heat exchange part 604 facing the receiving space 701 and the surface of the supporting part 702 facing the receiving space 701 is between 0 and 10 mm, it can be considered that the surface of the heat exchange part 604 facing the receiving space 701 and the surface of the supporting part 702 facing the receiving space 701 are flush.

[0117] Optionally, the bending portion 606 may abut against the supporting portion 702 , and the battery cell 3 may be directly placed on the surface of the heat exchange portion 604 facing the accommodating space 701 and the surface of the supporting portion 702 facing the accommodating space 701 , and the manufacturing process is simple.

[0118] In some embodiments, Figure 3 , Figure 8 and Fig. 9 As shown, the limiting assembly 506 further includes a steel belt 8 , which is disposed around the end plate 5 and the first limiting member 501 .

[0119] In some embodiments, the limiting assembly 506 further includes a steel belt 8 , which is disposed around the end plate 5 and the first limiting member 501 .

[0120] In these embodiments, the limiting assembly 506 further includes a steel belt 8 disposed around the end plate 5 and the first limiting member 501, and the steel belt 8 can limit the battery cell 3 and resist vibration impact from the surrounding side of the battery module 201. While ensuring the strength of the battery module 201, the volume of the steel belt 8 is smaller than that of the side plate 7, and the cost is lower.

[0121] Optionally, there may be a plurality of steel strips 8 , and the plurality of steel strips 8 may be disposed around the end plate 5 and the first limiting member 501 , which may further improve the limiting effect on the battery cell 3 , thereby increasing the strength of the battery module 201 .

[0122] In some embodiments, the limiting assembly 506 further includes a top steel belt 801 , which is located on a side of the first limiting member 501 away from the bottom plate 401 and connected to the end plate 5 .

[0123] In these embodiments, the limiting assembly 506 further includes a top steel strip 801 located on the side of the first limiting member 501 away from the bottom plate 401, and the top steel strip 801 is fixedly connected to the end plate 5, making the battery module 201 more compact. The top steel strip 801 further strengthens the strength of the battery module 201 and improves the possibility of deformation due to top intrusion.

[0124] Optionally, there may be multiple top steel strips 801, and multiple top steel strips 801 are arranged around the end plate 5 and the first stopper 501, which can further improve the strength of the battery module 201. Optionally, there may be two top steel strips 801.

[0125] In some embodiments, a plurality of limiting components 506 are spaced apart and distributed on the bottom plate 401 , and a plurality of first supporting portions 402 are provided. Each first supporting portion 402 is snap-fitted with each limiting groove 503 via each first slot 601 .

[0126] In these embodiments, a plurality of battery modules 201 are arranged at intervals on the bottom plate 401, and there are multiple sets of first support parts 402, first slots 601, and limit slots 503. The battery modules 201 are fixed by snapping together each first support part 402 with each limit slot 503 via each first slot 601, and the plurality of battery modules 201 form a battery for storing and providing electric energy.

[0127] In some embodiments of the present application, the embodiments of the present application further provide a battery 2 , comprising a shell 4 according to any of the first aspects described above and a battery cell 3 located in the shell 4 .

[0128] In some embodiments of the present application, the embodiments of the present application further provide an electrical device, comprising the battery 2 of the above-mentioned second aspect embodiment, and the battery 2 is used to provide electrical energy.

[0129] The electrical device may be any of the aforementioned devices or systems using the battery 2 .

[0130] See also Figures 3 to 5 , Figure 7 as well as Figure 8As shown, in some embodiments, the housing 4 includes: a bottom plate 401 and a limiting assembly 506. The limiting assembly 506 is arranged on the surface of one side of the bottom plate 401, and the limiting assembly 506 includes at least two end plates 5 and a first limiting member 501 arranged between two adjacent end plates 5. The first limiting member 501 and the end plate 5 are arranged at intervals, wherein a first support portion 402 is protrudingly provided on a side surface of the bottom plate 401 facing the limiting assembly 506, and the first limiting member 501 is recessed toward one side of the bottom plate 401 to form a limiting groove 503, and the first support portion 402 and the limiting groove 503 are snap-fitted. The housing 4 also includes a heat exchange plate 6, which is located between the bottom plate 401 and the first limiting member 501, and the heat exchange plate 6 is provided with a first clamping groove 601, and the first support portion 402 is snap-fitted with the limiting groove 503 via the first clamping groove 601. The length of the first support portion 402 in the first direction X is greater than the depth of the limiting groove 503 in the first direction X, so as to form a gap 504 between the heat exchange plate 6 and the bottom plate 401. Two first card slots 601 are arranged at intervals on both sides of the heat exchange plate 6 along the second direction Y, and there are two first support portions 402. The two first support portions 402 are snap-fitted via the two first card slots 601 and the limiting groove 503. The heat exchange plate 6 includes a main body 602 and an interface 603 arranged on the main body 602. The interface 603 extends from the main body 602 along the third direction Z and extends out of the end plate 5, and the two interfaces 603 are located on both sides of the main body 602 along the second direction Y. The interface 603 is used to realize the circulation of coolant in the heat exchange plate 6 to dissipate heat from the battery module 201. The end plate 5 is provided with an abutting portion 505 on one side away from the accommodating space 701. The bottom plate 401 further includes a second supporting portion 403. The second supporting portion 403 and the abutting portion 505 abut against each other to support the end plate 5. The interface 603 and the abutting portion 505 are arranged side by side along the second direction Y. The two side plates 7 are arranged at intervals along the second direction Y. The side plates 7, the end plates 5 and the heat exchange plate 6 enclose a accommodating space 701 for accommodating the battery cells 3. The side plate 7 has a supporting portion 702 extending from one end in the first direction X. The heat exchange plate 6 and the supporting portion 702 are connected to each other. The supporting portion 702 is recessed on one side of the heat exchange plate 6 to form a first groove 703. At least part of the heat exchange plate 6 is embedded in the first groove 703. The heat exchange plate 6 further includes a heat exchange portion 604, a connection portion 605 and a bending portion 606, wherein the connection portion 605 is located on both sides of the heat exchange portion 604 in the second direction Y, and the connection portion 605 is recessed toward the side of the heat exchange portion 604 close to the bottom plate 401, and the bending portion 606 connects the heat exchange portion 604 and the connection portion 605, and the connection portion 605 is located in the first groove 703, wherein the surface of the heat exchange portion 604 facing the accommodation space 701 is flush with the surface of the supporting portion 702 facing the accommodation space 701. A plurality of limiting components 506 are spaced apart and distributed on the bottom plate 401, and a plurality of first supporting portions 402 are provided, and each first supporting portion 402 is snap-fitted via each first slot 601 and each limiting slot 503.

[0131] In some embodiments, see Figure 3 , Figure 6 , Figure 7 , Fig. 9 as well as Fig.10 . The shell 4 includes: The present application provides a shell 4 of a battery 2, the shell 4 is used to accommodate a battery cell 3, and the shell 4 includes: a bottom plate 401 and a limit assembly 506. The limit assembly 506 is arranged on the surface of one side of the bottom plate 401, and the limit assembly 506 includes at least two end plates 5 and a first limit member 501 arranged between two adjacent end plates 5, and the first limit member 501 and the end plate 5 are arranged at intervals, wherein a first support portion 402 is protrudingly provided on the surface of one side of the bottom plate 401 facing the limit assembly 506, and the first limit member 501 is recessed toward one side of the bottom plate 401 to form a limit groove 503, and the first support portion 402 and the limit groove 503 are snap-fitted. The shell 4 also includes a heat exchange plate 6, the heat exchange plate 6 is located between the bottom plate 401 and the first limit member 501, and the heat exchange plate 6 is provided with a first card groove 601, and the first support portion 402 is snap-fitted with the limit groove 503 via the first card groove 601. The length of the first support portion 402 in the first direction X is greater than the depth of the limiting groove 503 in the first direction X, so as to form a gap 504 between the heat exchange plate 6 and the bottom plate 401. Two first card slots 601 are arranged at intervals on both sides of the heat exchange plate 6 along the second direction Y, and there are two first support portions 402. The two first support portions 402 are snap-fitted via the two first card slots 601 and the limiting groove 503. The heat exchange plate 6 includes a main body 602 and an interface 603 arranged on the main body 602. The interface 603 extends from the main body 602 along the third direction Z and extends out of the end plate 5, and the two interfaces 603 are located on both sides of the main body 602 along the second direction Y. The interface 603 is used to realize the circulation of coolant in the heat exchange plate 6 to dissipate heat from the battery module 201. The end plate 5 is provided with an abutting portion 505 on the side away from the accommodating space 701, and the bottom plate 401 also includes a second supporting portion 403, the second supporting portion 403 and the abutting portion 505 abut against each other to support the end plate 5, and the interface 603 and the abutting portion 505 are arranged side by side along the second direction Y. The limiting assembly 506 also includes a steel belt 8, which is arranged around the end plate 5 and the first limiting member 501. The limiting assembly 506 also includes a top steel belt 801, which is located on the side of the first limiting member 501 away from the bottom plate 401 and connected to the end plate 5. A plurality of limiting assemblies 506 are distributed at intervals on the bottom plate 401, and there are multiple groups of first supporting portions 402, and each first supporting portion 402 is snap-fitted with each first card slot 601 and each limiting slot 503.

[0132] 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 housing, the housing being used to accommodate a battery cell, characterized in that: The housing comprises: Base plate; A limit assembly is arranged on a surface of one side of the bottom plate, the limit assembly comprises at least two end plates and a first limit member arranged between two adjacent end plates, the first limit member and the end plate are arranged at intervals, A first support portion is protruding from a surface of one side of the bottom plate facing the limiting assembly, and the first limiter is recessed toward one side of the bottom plate to form a limiting groove, and the first support portion and the limiting groove are snap-fitted.

2. The housing according to claim 1, characterized in that The shell further includes a heat exchange plate, which is located between the bottom plate and the first limiting member. The heat exchange plate is provided with a first slot, and the first support portion is snap-fitted with the limiting slot via the first slot.

3. The housing according to claim 2, characterized in that: The length of the first supporting portion in the first direction is greater than the depth of the limiting groove in the first direction, so as to form a gap between the heat exchange plate and the bottom plate.

4. The housing according to claim 2, characterized in that: The two first clamping grooves are arranged at intervals on both sides of the heat exchange plate along the second direction. There are two first supporting parts, and the two first supporting parts are buckled with the two first clamping grooves and the limiting grooves.

5. The housing according to claim 2, characterized in that: The heat exchange plate includes a main body and an interface arranged on the main body, the interface extends from the main body along the third direction and extends out of the end plate, and the two interfaces are located on both sides of the main body along the second direction, and the interface is used to input or output heat exchange medium.

6. The housing according to claim 5, characterized in that The end plate is provided with an abutment portion on one side away from the first limiting member, the bottom plate further comprises a second supporting portion, the second supporting portion and the abutment portion abut against each other to support the end plate, and the interface and the abutment portion are arranged side by side along the second direction.

7. The housing according to claim 2, characterized in that The limiting assembly also includes a side plate, two of which are spaced apart along the second direction, the side plate, the end plate and the heat exchange plate together form a storage space for accommodating a battery cell, a supporting portion extends toward the storage space at one end of the side plate in the first direction, and the heat exchange plate and the supporting portion are connected to each other.

8. The housing according to claim 7, characterized in that A first groove is formed on one side of the supporting portion facing the heat exchange plate, and at least a portion of the heat exchange plate is embedded in the first groove.

9. The housing according to claim 8, characterized in that The heat exchange plate further includes a heat exchange portion, a connecting portion and a bending portion, wherein the connecting portion is located on both sides of the heat exchange portion in the second direction, and the connecting portion is recessed toward a side of the heat exchange portion close to the bottom plate, the bending portion connects the heat exchange portion and the connecting portion, and the connecting portion is located in the first groove. Wherein, a surface of the heat exchange portion facing the accommodating space is flush with a surface of the supporting portion facing the accommodating space.

10. The housing according to claim 1, characterized in that The limiting assembly further includes a steel belt, and the steel belt is arranged around the end plate and the first limiting member.

11. The housing according to claim 1, characterized in that The limiting assembly further includes a top steel belt, which is located at a side of the first limiting member away from the bottom plate and connected to the end plate.

12. The housing according to claim 2, characterized in that A plurality of the limiting components are distributed at intervals on the bottom plate, and there are a plurality of groups of the first supporting parts. Each of the first supporting parts is snap-fitted with each of the limiting grooves via each of the first clamping grooves.

13. A battery, characterized in that: The invention comprises a housing as claimed in any one of claims 1 to 12 and a battery cell located in the housing.

14. An electrical device, characterized in that: Comprising a battery as claimed in claim 13, the battery is used to provide electrical energy.

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