Battery and electric device

Abstract

A battery (100) and an electric device. The battery (100) comprises a case (10) and battery cells (20). The case (10) comprises: a case body (13); at least two limiting beams (14), wherein the at least two limiting beams (14) and the case body (13) define an accommodating space (16), the limiting beams (14) each comprise a first beam side surface (141) and a second beam side surface (142), the second beam side surface (142) is configured to be a vertical plane for abutting against the largest surfaces of the battery cells (20), and the second beam side surface (142) and at least part of the first beam side surface (141) are arranged at an included angle; and fixing members (15) connected between the limiting beams (14) in a first direction. The battery cells (20) in the accommodating space (16) are constrained by means of the limiting beams (14), the first beam side surfaces (141) abut against the largest surfaces of the battery cells (20), and at least parts of the first beam side surfaces (141) are inclined toward the second beam side surfaces (142), such that the limiting beams (14) provide stable support to constrain expansion on the battery cells (20); and in addition, the fixing members (15) can limit the limiting beams (14) in the first direction, thereby reducing the probability of tilting of the limiting beams (14) under the expansion deformation of the battery cells (20), and further improving the expansion constraint force on the battery cells (20).

Description

Batteries and electrical devices

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 2024206464329, entitled “Battery and Electrical Device,” filed on March 29, 2024, the entire text of which is incorporated herein by reference. Technical Field

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

[0004] A battery cell is the smallest unit of a battery. During cycling, electrochemical reactions occur within the cell, causing it to swell. This expansion affects the overall performance of the battery.

[0005] Therefore, when the battery cells are placed in the box, a certain support structure is required to restrain the expansion of the battery cells. However, the current support structure has a poor anti-expansion effect and cannot provide sufficient support and restraint for the expansion of the battery cells.

[0006] Summary of the Invention

[0007] Based on this, it is necessary to provide a battery and an electrical device to address the problem that the current support structure has poor anti-expansion effect and cannot provide sufficient support and restraint for the expansion of the battery cell.

[0008] In the first aspect, the present application provides a battery, including a battery cell and a box body, the box body including a box body, at least two limiting beams and a fixing member, each limiting beam is arranged in the box body at intervals along a first direction, and two adjacent limiting beams and the box body are enclosed to form a accommodating space for accommodating the battery cell; at least one limiting beam includes a first beam side surface and a second beam side surface arranged opposite to each other along the first direction, the second beam side surface is configured as a vertical plane for abutting against the large surface of the battery cell, the large surface is the surface with the largest surface area in the battery cell, and at least part of the first beam side surface is inclined toward the second beam side surface; the fixing member extends along the first direction and is connected between two adjacent limiting beams, and is used to limit the two adjacent limiting beams along the first direction.

[0009] Through this structure, the limiting beams can constrain the battery cells within the storage space. The first side of the limiting beam abuts the larger surface of the battery cell, while the second side forms an angle with at least a portion of the first side. This allows the limiting beams to more stably support and constrain the expansion of the larger surface of the battery cell. Furthermore, the fixings can constrain the limiting beams along the first direction, reducing the probability of the limiting beams tipping over due to expansion and deformation of the battery cell, further enhancing the expansion restraint on the battery cell.

[0010] In some embodiments, the fixing member has a connecting surface, which is arranged toward the accommodation space and is used to connect with the battery cell in the accommodation space.

[0011] By connecting the fixing member to the battery cell in the accommodation space through the connecting surface, the restraining force of the fixing member on the battery cell can be further enhanced.

[0012] In some embodiments, the box body further includes a connecting piece, which is disposed between the connecting surface and the top cover of the battery cell and is used to connect the fixing piece and the battery cell.

[0013] By providing the connecting piece, the connecting surface and the top cover of the battery cell can be quickly and stably connected, thereby further enhancing the restraining force of the fixing piece on the battery cell.

[0014] In some embodiments, the connector comprises an adhesive.

[0015] In some embodiments, the fixing member and the position-limiting beams are detachably connected, thereby enabling more flexible assembly and disassembly between the fixing member and the position-limiting beams, and facilitating operation.

[0016] In some embodiments, the box body further includes a support beam connected between a side surface of the first beam and an inner wall of the box body along a first direction.

[0017] Thus, the support beam allows the second side of the limiting beam to better contact the larger surface of the battery cell, providing a stable support force for the battery cell. Furthermore, the support beam can smoothly transfer the expansion force on the battery cell to the box body, providing a better anti-expansion effect.

[0018] In some embodiments, the limiting beam extends along the second direction, and the first direction and the second direction are arranged to intersect;

[0019] The box body includes a plurality of support beams, which are arranged at intervals along the second direction and are respectively connected between the side surfaces of the first beam and the inner wall of the box body along the first direction.

[0020] Through the above structure, the support beam can better support between the limiting beam and the box body, and smoothly transfer the expansion force on the battery cell to the box body through the support beam, providing better anti-expansion effect.

[0021] In some embodiments, the side surface of the first beam includes a connected first section and a second section, one end of the supporting beam is connected to the first section along a first direction, and the second section is inclined toward the side surface of the second beam; the first section and the second section are coplanar; or, the first section and the side surface of the second beam are parallel.

[0022] Through the above structure, the support of the battery cell by the limiting beam is made more stable, and the expansion force of the battery cell is smoothly transferred from the limiting beam to the box body through the supporting beam, providing a better anti-expansion effect.

[0023] Furthermore, the limiting beam can provide stable support force for the battery cell. On this basis, the support beam can better abut between the limiting beam and the inner wall of the box body, smoothly transferring the expansion force on the battery cell to the box body.

[0024] In some embodiments, the second beam side surface and the second section have an included angle A, 0°<A≤20°.

[0025] Therefore, by setting the angle between the side surface of the second beam and the second section to the above range, the supporting force of the limiting beam for the battery cell can be improved, while the installation space inside the box body can be better utilized to improve space utilization.

[0026] In some embodiments, one end of the support beam is connected to the first section along the first direction. This makes the support of the battery cell by the limit beam more stable, and the expansion force of the battery cell is smoothly transferred from the limit beam to the box body through the support beam, providing better anti-expansion effect.

[0027] In some embodiments, the limiting beam includes at least one supporting rib connected between the first beam side surface and the second beam side surface.

[0028] Through the above structure, the supporting force between the side surface of the first beam and the side surface of the second beam can be improved, so that the limiting beam can support the battery cell more stably.

[0029] In some embodiments, the support ribs are arranged obliquely relative to the first direction. Thus, when a battery cell generates expansion and deformation forces during cycling, the support ribs connected to the side surfaces of the second beam can redirect the expansion and deformation forces generated in the first direction to the side surfaces of the first beam, and then to the support beam. This increases the overall stiffness of the limit beam in resisting deformation in the first direction and effectively prevents excessive expansion and deformation of the battery cell during cycling.

[0030] In some embodiments, the limiting beam includes a plurality of supporting ribs, and at least two adjacent supporting ribs are spaced apart from each other and have opposite inclination directions relative to the first direction.

[0031] By providing the supporting ribs, the structural stability of the limiting beam can be improved, so that the limiting beam can more stably restrain the expansion of the battery cell.

[0032] In some embodiments, at least one support rib is fixedly connected to the connection between the first section and the second section at one end away from the side surface of the second beam.

[0033] In some embodiments, the side surface of the second beam includes an upper section, a middle section, and a lower section evenly divided along its height direction; the number of supporting ribs connected to the middle section is not less than the number of supporting ribs connected to the upper section or the lower section.

[0034] Through the above structure, the supporting ribs can better support and constrain the middle area of ​​the large surface of the battery cell.

[0035] In some embodiments, one end of all the support ribs is connected to the middle section, thereby enabling all the support ribs to support the middle area of ​​the large surface of the battery cell, thereby better restraining the expansion deformation of the large surface of the battery cell.

[0036] In some embodiments, the limiting beam further includes a top surface and a bottom surface, and the top surface and the bottom surface are respectively connected to two ends of the first beam side surface and the second beam side surface to enclose an internal cavity of the limiting beam.

[0037] The above structure forms an internal cavity in the limiting beam, i.e., the limiting beam is configured as a hollow structure, which can reduce the weight of the limiting beam. Thus, when the limiting beam is disposed inside the box body, the overall weight of the box body and the battery can be reduced.

[0038] In some embodiments, the limiting beam includes a support plate connected between the top surface and the bottom surface to divide the inner cavity of the limiting beam into at least two sub-cavities.

[0039] Therefore, by providing the support plate, the internal cavity of the limiting beam is divided, so that the limiting beam forms a multi-cavity structure, which can resist a greater expansion force and provide a better support effect.

[0040] In some embodiments, the limiting beam includes at least one first sub-rib and at least one second sub-rib, the first sub-rib is connected between the side surface of the first beam and the support plate, and the second sub-rib is connected between the support plate and the side surface of the second beam.

[0041] By providing the first sub-rib and the second sub-rib, the first beam side, the support plate and the second beam side can be better supported, the structural strength of the limiting beam is improved, and the supporting stability of the limiting beam on the battery cell is improved.

[0042] In some embodiments, the support plate includes a first sub-plate and a second sub-plate connected to each other, the second sub-plate is tilted toward the side of the second beam, and the first sub-plate and the second sub-plate are coplanar; or, the first sub-plate is parallel to the side of the second beam.

[0043] With the above structure, when the limiting beam is used to support the battery cell, the expansion force on the large surface of the battery cell can be better transmitted to the supporting beam through the limiting beam, and then to the box body.

[0044] In some embodiments, one end of a first sub-rib is fixedly connected to the connection between the first section and the second section; and the other end of the first sub-rib is fixedly connected to the connection between the first sub-plate and the second sub-plate; one end of a second sub-rib is fixedly connected to the connection between the first sub-plate and the second sub-plate, and the other end of the second sub-rib is connected to the side surface of the second beam.

[0045] Through the above structure, not only the connection stability between the first section and the second section, and between the first sub-plate and the second sub-plate can be improved, but also the expansion force on the battery cell can be smoothly transmitted to the support plate and the side of the first beam through the first sub-rib and the second sub-rib, and finally transmitted to the box body through the support beam.

[0046] The first sub-rib is arranged parallel to the first direction, while the second sub-rib is arranged obliquely relative to the first direction. This allows the second sub-rib, connected to the side of the second beam, to redirect the expansion and deformation force generated in the first direction and transmit it to the support plate. The support plate then transmits the expansion and deformation force along the first direction to the side of the first beam via the first sub-rib. This expansion and deformation force is then transferred to the support beam, thereby increasing the overall stiffness of the limit beam against deformation in the first direction and effectively preventing excessive expansion and deformation of the battery cells during cycling.

[0047] In some embodiments, the limiting beam includes multiple first sub-ribs and multiple second sub-ribs; two adjacent first sub-ribs are spaced apart from each other and arranged in parallel; and / or at least two adjacent second sub-ribs are spaced apart from each other and have opposite inclination directions relative to the first direction.

[0048] In some embodiments, at least one second sub-rib and the corresponding first sub-rib are connected to the same position of the support plate.

[0049] Through the above structure, the overall structural strength of the limiting beam can be improved, so as to better support the battery cell and form a stable constraint on the expansion force of the battery cell.

[0050] In some embodiments, the second beam side includes an upper section, a middle section, and a lower section evenly divided along its height direction, and the number of second sub-bars connected to the middle section is not less than the number of second sub-bars connected to the upper section or the lower section.

[0051] In some embodiments, all of the second sub-rebars are connected to the middle section.

[0052] Through the above structure, the second sub-rib can better support and constrain the middle area of ​​the large surface of the battery cell.

[0053] In a second aspect, the present application further provides an electrical device comprising the battery as described above, wherein the battery is used to provide electrical energy to the electrical device.

[0054] The above-mentioned battery and electrical device place the battery cell in the accommodation space, and the limiting beams at both ends can constrain the battery cell in the accommodation space, wherein the first beam side surface of the limiting beam can abut against the large surface of the battery cell, and the angle between the second beam side surface and at least part of the first beam side surface is set, so that the limiting beam can more stably support and constrain the expansion of the large surface of the battery cell; in addition, the fixing member can limit each limiting beam along the first direction, reducing the probability of the limiting beam tipping over under the action of the expansion deformation of the battery cell, and further improving the expansion restraint force on the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0056] FIG1 is a schematic structural diagram of a vehicle according to one or more embodiments.

[0057] FIG2 is a schematic diagram of an exploded structure of a battery according to one or more embodiments.

[0058] FIG3 is a schematic diagram of an exploded structure of a battery cell according to one or more embodiments.

[0059] FIG4 is a schematic structural diagram of a box according to one or more embodiments.

[0060] 5 is a top view of a housing according to one or more embodiments.

[0061] 6 is a side view of a housing according to one or more embodiments.

[0062] FIG7 is a partial enlarged view of point B in FIG6 .

[0063] FIG8 is a partial schematic diagram of a housing according to one or more embodiments.

[0064] FIG. 9 is a partial schematic diagram of a housing according to one or more embodiments.

[0065] Explanation of reference numerals: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, housing; 20, battery cell; 11, first part; 12, second part; 13, housing body; 14, limiting beam; 15, fixing member; 16, accommodation space; 17, connecting member; 18, supporting beam; 21, end cover; 22, housing; 23, electrode assembly; 141, side of first beam; 142, second part Side surface of the second beam; 143, supporting rib; 144, top surface; 145, bottom surface; 146, internal cavity; 147, supporting plate; 148, first sub-rib; 149, second sub-rib; 1411, first section; 1412, second section; 1421, upper section; 1422, middle section; 1423, lower section; 1471, first sub-plate; 1472, second sub-plate; a, first direction; b, second direction. DETAILED DESCRIPTION

[0066] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0067] In the description of this application, it should be understood that if the 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0068] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0069] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0070] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this 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, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0072] 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 such as electric bicycles, electric motorcycles, and electric cars, as well as in other fields. As the application of power batteries continues to expand, market demand is also growing.

[0073] A battery cell is the smallest unit of a battery. During cycling, electrochemical reactions occur within the cell, causing it to swell. This expansion affects the overall performance of the battery.

[0074] To prevent battery cells from expanding continuously during cycling, which could lead to degradation in battery performance, a support structure is typically installed within the battery box to support and restrain the battery cells. However, current support structures offer limited anti-expansion performance and are unable to adequately support and restrain the expansion of the battery cells.

[0075] Based on the above considerations, in order to solve the problem that the current support structure has poor anti-expansion effect and cannot provide sufficient support and restraint for the expansion of the battery cell, one or more embodiments of the present application provide a battery and an electrical device, wherein the battery cell is placed in the accommodating space, and the battery cell in the accommodating space can be restrained by the limiting beams at both ends, wherein the first beam side surface of the limiting beam can abut against the large surface of the battery cell, and at least part of the first beam side surface is inclined toward the second beam side surface, so that the limiting beam can more stably support and restrain the expansion of the large surface of the battery cell; in addition, the fixing member can limit each limiting beam along the first direction, thereby reducing the probability of the limiting beam tipping over under the action of the expansion deformation of the battery cell, and further improving the expansion restraint force on the battery cell.

[0076] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0077] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0078] Referring to Figure 1, the vehicle 1000 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 100 is provided inside the vehicle 1000. The battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 can also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0079] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0080] Referring to Figure 2 , the battery 100 includes a housing 10 and battery cells 20, with the battery cells 20 housed within the housing 10. The housing 10 is used to provide a storage space for the battery cells 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for the battery cells 20. The second portion 12 can be a hollow structure with one end open, and the first portion 11 can be a plate-like structure, with the first portion 11 overlapping the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. Alternatively, the first portion 11 and the second portion 12 can each be a hollow structure with one end open, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0081] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 20 may be housed within the housing 10. Alternatively, the battery 100 may be constructed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a complete battery module, and then housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0082] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0083] 3 , a battery cell 20 is the smallest unit of a battery. As shown in FIG3 , the battery cell 20 includes an end cap 21 , a housing 22 , an electrode assembly 23 , and other functional components.

[0084] The end cap 21 is a component that covers the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22. In some embodiments, the end cap 21 can be made of a material with a certain hardness and strength (such as an aluminum alloy). This prevents the end cap 21 from deforming when subjected to compression or collision, thereby providing the battery cell 20 with greater structural strength and improved safety. The end cap 21 can be provided with functional components such as electrode terminals 21a. The electrode terminals can be used to electrically connect to the electrode assembly 23 to output or input electrical energy to the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for relieving internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The end cap 21 can also be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any specific limitations on this. In some embodiments, an insulating member may be provided inside the end cap 21 to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0085] The housing 22 is a component that cooperates with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can be used to accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and end cap 21 can be separate components. An opening can be provided in the housing 22, and the end cap 21 is placed over the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and housing 22 can be integrated. Specifically, the end cap 21 and housing 22 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 22 needs to be enclosed, the end cap 21 is placed over the housing 22. The housing 22 can have a variety of shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, or a hexagonal prism. Specifically, the shape of the housing 22 can be determined based on the specific shape and size of the electrode assembly 23. The housing 22 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any particular limitations on this.

[0086] The electrode assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 23 may be contained in the housing 22. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive and negative electrode tabs may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0087] Referring to Figures 4, 5, 6, and 7, one embodiment of the present application provides a battery 100 comprising a housing 10 and battery cells 20. The housing 10 includes a housing body 13, position-limiting beams 14, and a fixing member 15. The position-limiting beams 14 comprise at least two, spaced apart within the housing body 13 along a first direction a. Two adjacent position-limiting beams 14 and the housing body 13 enclose a receiving space 16 for accommodating the battery cells 20. At least one position-limiting beam 14 includes a first beam side surface 141 and a second beam side surface 142, opposed to each other along the first direction a. The second beam side surface 142 is a vertical plane configured to abut against the larger surface of the battery cell 20, which has the largest surface area. At least a portion of the first beam side surface 141 is tilted toward the second beam side surface 142. The fixing member 15 extends along the first direction a and connects between two adjacent position-limiting beams 14, thereby limiting the position of the two adjacent position-limiting beams 14 along the first direction a.

[0088] It should be noted that the box body 13 is a hollow structure that provides a base for mounting and accommodating the battery cells 20 and other components of the battery 100. When the battery cells 20 are positioned within the box body 13, the box body 13 provides a closed and stable environment for the battery cells 20, providing a certain degree of protection for the battery cells 20.

[0089] The limiting beams 14 are structures disposed within the box body 13 that support the battery cells 20 and constrain their expansion and deformation. Two limiting beams 14 can be provided, positioned on opposite sides of the box body 13 along the first direction a. Together, the two limiting beams 14 and the inner wall of the box body 13 form a receiving space 16 within which the battery cells 20 can be placed.

[0090] The large surface of the battery cell 20 refers to the surface with the largest surface area in the battery cell 20. Specifically, the battery cell 20 is usually arranged in a rectangular structure, and the battery cell 20 usually includes two large surfaces, and the two large surfaces are arranged opposite to each other and parallel to each other.

[0091] Furthermore, at least one limiting beam 14 includes a first beam side surface 141 and a second beam side surface 142 disposed opposite each other along a first direction a. The second beam side surface 142 is disposed toward the larger surface of the battery cell 20 within the accommodating space 16 and extends vertically. When the battery cell 20 is placed within the accommodating space 16, the second beam side surface 142 of the limiting beam 14 can abut against the larger surface of the battery cell 20, thereby providing good support for the larger surface of the battery cell 20.

[0092] The second beam side surface 142 is arranged at an angle to at least a portion of the first beam side surface 141. That is, at least a portion of the first beam side surface 141 is inclined along the vertical direction, and the distance between the inclined first beam side surface 141 and the second beam side surface 142 gradually increases from top to bottom. This makes the support of the battery cell 20 by the limiting beam 14 more stable.

[0093] It can be understood that in some other embodiments, the number of limiting beams 14 can also be set to be greater, and every two adjacent limiting beams 14 are spaced apart along the first direction a, thereby forming a accommodating space 16 between the inner wall of the box body 13, and each accommodating space 16 can be used to install a battery cell 20.

[0094] In addition, the fixing member 15 is a structure that can be connected to each limiting beam 14 and limit each limiting beam 14 along the first direction a to better fix the battery cell 20 in the accommodating space 16 .

[0095] Specifically, the fixing member 15 can be, but is not limited to, a steel belt structure, and the steel belt is extended along the first direction a. Taking the arrangement of two limiting beams 14 as an example, the opposite ends of the steel belt in the first direction a are connected to the two limiting beams 14, respectively, thereby providing tension to the two limiting beams 14 along the first direction a.

[0096] In this way, when the expansion force of the battery cell 20 is large, the steel belt can tighten the limit beams 14 at both ends through tension, reducing the probability of the limit beams 14 being overturned by the expansion force of the battery cell 20, thereby making the support and restraint of the battery cell 20 by the limit beams 14 more stable.

[0097] Through the above-described structure, the limiting beams 14 can constrain the battery cells 20 within the accommodating space 16. Specifically, the first beam side surface 141 of the limiting beam 14 can abut against the large surface of the battery cell 20, while the angle between the second beam side surface 142 and at least a portion of the first beam side surface 141 enables the limiting beams 14 to more stably support and constrain the expansion of the large surface of the battery cell 20. Furthermore, the fixing member 15 can constrain each limiting beam 14 along the first direction a, reducing the probability of the limiting beam 14 tipping over due to the expansion deformation of the battery cell 20 and further enhancing the expansion restraint on the battery cell 20.

[0098] In some embodiments, the fixing member 15 has a connecting surface (not shown in the figures), which is arranged toward the accommodating space 16 and is used to connect with the battery cell 20 in the accommodating space 16 .

[0099] Specifically, when the fixing member 15 is connected to the top ends of the two limiting beams 14, the connection surface is the bottom surface 145 of the fixing member 15. When the battery cell 20 is placed in the receiving space 16, the connection surface is arranged toward the battery cell 20.

[0100] Thus, the fixing member 15 is connected to the battery cell 20 in the accommodation space 16 via the connection surface, which can further enhance the restraining force of the fixing member 15 on the battery cell 20 .

[0101] In some embodiments, the box body 10 further includes a connector 17 . The connector 17 is disposed between the connection surface and the top cover of the battery cell 20 and is used to connect the fixing member 15 and the battery cell 20 .

[0102] For example, the connector 17 includes an adhesive. Specifically, the adhesive can be, but is not limited to, a structural adhesive. That is, the structural adhesive is applied between the connecting surface and the top cover of the battery cell 20 to securely connect the fixing member 15 to the battery cell 20, thereby enhancing the restraint force of the fixing member 15 on the battery cell 20.

[0103] Of course, the connecting member 17 can also be set to other structures, such as double-sided tape or other connecting structures, which will not be described here.

[0104] By providing the connecting member 17 , the connecting surface can be quickly and stably connected to the top cover of the battery cell 20 , thereby further enhancing the restraining force of the fixing member 15 on the battery cell 20 .

[0105] In some embodiments, the fixing member 15 and each limiting beam 14 are detachably connected.

[0106] Specifically, the fixing member 15 and each limiting beam 14 can be detachably connected by, but not limited to, bolt connection, snap connection or other connection methods, thereby making it possible to flexibly assemble and disassemble the fixing member 15 and each limiting beam 14 and facilitate operation.

[0107] As shown in FIG6 , FIG7 and FIG8 , in some embodiments, the battery 10 further includes a support beam 18 , which is connected between the first beam side surface 141 and the inner wall of the box body 13 along the first direction a.

[0108] Specifically, the support beam 18 extends along the first direction a, and opposite ends of the support beam 18 abut against the first beam side surface 141 and the inner wall of the box body 13 respectively.

[0109] Thus, the support beam 18 allows the second beam side surface 142 of the limiting beam 14 to better abut against the large surface of the battery cell 20, thereby providing a stable support force for the battery cell 20. In addition, the support beam 18 can smoothly transfer the expansion force on the battery cell 20 to the box body 13, providing a better anti-expansion effect.

[0110] In some embodiments, the first beam side surface 141 includes a connected first section 1411 and a second section 1412, one end of the support beam 18 is connected to the first section 1411 along a first direction a, and the second section 1412 is inclined toward the second beam side surface 142; the first section 1411 and the second section 1412 are coplanar; or, the first section 1411 and the second beam side surface 142 are parallel.

[0111] Specifically, the first section 1411 and the second section 1412 are arranged in sequence along the vertical direction, that is, the second section 1412 is arranged at the upper end of the first section 1411 .

[0112] The angle between the second section 1412 and the second beam side surface 142 is set, that is, the second section 1412 is inclined along the vertical direction, so that the limiting beam 14 forms a structure with a small top and a large bottom, thereby providing more stable support for the battery cell 20.

[0113] Furthermore, the support beam 18 is disposed on the bottom surface 145 of the box body 13 and extends along the first direction a. One end of the support beam 18 abuts the inner wall of the box body 13, and the other end abuts the first section 1411. This facilitates transferring the expansion force of the battery cells 20 from the limiting beam 14 to the box body 13, providing better anti-expansion effect.

[0114] In addition, one end of the support beam 18 is connected to the first section 1411 along the first direction a. This makes the support of the battery cell 20 by the limiting beam 14 more stable, and the expansion force of the battery cell 20 is smoothly transmitted from the limiting beam 14 to the box body 10 through the support beam 18, providing better anti-expansion effect.

[0115] Therefore, through the above structure, the support of the battery cell 20 by the limiting beam 14 is made more stable, and the expansion force of the battery cell 20 is smoothly transferred from the limiting beam 14 to the box body 13 through the support beam 18, providing a better anti-expansion effect.

[0116] In addition, the first section 1411 and the second section 1412 are arranged coplanarly; or, the first section 1411 and the second beam side surface 142 are arranged parallel to each other.

[0117] When first section 1411 and second section 1412 are coplanar, they are both inclined vertically, with the same inclination angle. In this case, first section 1411 and second section 1412 together form an inclined surface. When support beam 18 abuts first section 1411, the end of support beam 18 must be aligned to match the slope of first section 1411 to ensure a tight connection.

[0118] When the first section 1411 is parallel to the second beam side 142, the first section 1411 is arranged in a vertical direction, and the first section 1411 intersects the second section 1412. In this case, the support beam 18 is perpendicular to the first section 1411, so that the support beam 18 can abut the first section 1411 more stably.

[0119] Through the above structure, the limiting beam 14 can provide stable support force for the battery cell 20. On this basis, the support beam 18 can better abut between the limiting beam 14 and the inner wall of the box body 13, and smoothly transfer the expansion force on the battery cell 20 to the box body 13.

[0120] In some embodiments, the second beam side surface 142 and the second section 1412 have an included angle A, where 0 degrees (°)<A≤20°.

[0121] Specifically, the angle between the second beam side surface 142 and the second section 1412 is the angle at which the second section 1412 is inclined relative to the vertical direction. Therefore, the larger the angle A, the better the support provided by the position-limiting beam 14 for the battery cell 20. However, this also increases the installation space occupied by the position-limiting beam 14 within the box body 13, hindering the installation of other components of the battery 100 within the box body 13.

[0122] Therefore, by setting the included angle between the second beam side surface 142 and the second section 1412 to the above range, the support force of the limiting beam 14 for the battery cell 20 can be improved while better utilizing the installation space inside the box body 13 to improve space utilization.

[0123] In some embodiments, the limiting beam 14 includes at least one supporting rib 143 , and the supporting rib 143 is connected between the first beam side surface 141 and the second beam side surface 142 .

[0124] Specifically, the hollow interior of the limiting beam 14 can reduce the weight of the limiting beam 14, thereby reducing the overall weight of the battery 100. At the same time, support ribs 143 are provided inside the limiting beam 14 and supported between the first beam side surface 141 and the second beam side surface 142. This improves the supporting force between the first beam side surface 141 and the second beam side surface 142, allowing the limiting beam 14 to more stably support the battery cell 20.

[0125] In some embodiments, the support ribs 143 are arranged at an angle relative to the first direction a. Thus, when the battery cells 20 generate expansion and deformation forces during cycling, the support ribs 143 connected to the second beam side surface 142 can redirect the expansion and deformation forces generated in the first direction a to the first beam side surface 142 and, in turn, to the support beam 18 , thereby increasing the overall stiffness of the limiting beam 14 in resisting deformation in the first direction a and effectively preventing excessive expansion and deformation of the battery cells 20 during cycling.

[0126] In some embodiments, the limiting beam 14 includes a plurality of supporting ribs 143 , and at least two adjacent supporting ribs 143 are spaced apart from each other and have opposite inclination directions relative to the first direction a.

[0127] The multiple support ribs 143 can improve the supporting force for the first beam side surface 141 and the second beam side surface 142, and the multiple support ribs 143 are arranged at intervals along the vertical direction, so that uniform multi-point support is formed on the first beam side surface 141 and the second beam side surface 142, thereby improving the support stability.

[0128] In addition, two adjacent supporting ribs 143 are spaced apart and have opposite inclination directions relative to the first direction a, which can further improve the supporting stability.

[0129] By providing the supporting ribs 143 , the structural stability of the limiting beam 14 can be improved, so that the limiting beam 14 can more stably restrain the expansion of the battery cell 20 .

[0130] In some embodiments, one end of at least one supporting rib 143 away from the second beam side surface 142 is fixedly connected to the connection between the first section 1411 and the second section 1412 .

[0131] By fixing the end of the support rib 143 away from the second beam side surface 142 to the connection between the first section 1411 and the second section 1412, the support rib 143 can form a certain connection between the first section 1411 and the second section 1412, and can also provide support for the first section 1411 and the second section 1412. Therefore, the above structure can improve the overall stability of the limiting beam 14.

[0132] In some embodiments, the second beam side surface 142 includes an upper section 1421, a middle section 1422, and a lower section 1423 evenly divided along its height. The number of support ribs 143 connected to the middle section 1422 is not less than the number of support ribs 143 connected to the upper section 1421 or the lower section 1423.

[0133] It should be noted that the support rib 143 connected to the middle section 1422 means that the end of the support rib 143 connected to the second beam side surface 142 falls on the middle section 1422 of the second beam side surface 142. Similarly, the end of the support rib 143 connected to the second beam side surface 142 may also fall on the upper section 1421 or the lower section 1423.

[0134] Specifically, the middle section 1422 of the second beam side surface 142 is located between the upper section 1421 and the lower section 1423 . When the second beam side surface 142 abuts against the large surface of the battery cell 20 , the middle section 1422 can correspond to the middle area of ​​the large surface of the battery cell 20 .

[0135] When the battery cell 20 expands, since the large surface of the battery cell 20 has the largest area, the expansion deformation on the large surface is usually larger and mostly concentrated in the middle area of ​​the large surface.

[0136] Therefore, the number of support ribs 143 connected to the middle section 1422 is not less than the number of support ribs 143 connected to the upper section 1421 or the lower section 1423, that is, the support ribs 143 have a greater supporting force on the middle section 1422, thereby being able to better support and constrain the large surface of the battery cell 20.

[0137] Through the above structure, the support ribs 143 can better support and constrain the middle area of ​​the large surface of the battery cell 20.

[0138] In some embodiments, one end of all the support ribs 143 is connected to the middle section 1422 .

[0139] Thus, one end of all the support ribs 143 is set in the middle section 1422 , so that all the support ribs 143 can support the middle area of ​​the large surface of the battery cell 20 and better restrain the expansion deformation of the large surface of the battery cell 20 .

[0140] In some embodiments, the limiting beam 14 further includes a top surface 144 and a bottom surface 145 . The top surface 144 and the bottom surface 145 are respectively connected to two ends of the first beam side surface 141 and the second beam side surface 142 to enclose an internal cavity 146 of the limiting beam 14 .

[0141] Through the above structure, the limiting beam 14 forms an internal cavity 146, that is, the limiting beam 14 is set to a hollow structure, which can reduce the weight of the limiting beam 14. Therefore, when the limiting beam 14 is set inside the box body 13, the overall weight of the box body 13 and the battery 100 can be reduced.

[0142] As shown in FIG6 and FIG9 , in some embodiments, the limiting beam 14 includes a support plate 147 connected between the top surface 144 and the bottom surface 145 to separate the inner cavity 146 of the limiting beam 14 into at least two sub-cavities.

[0143] Specifically, the support plate 147 can be set to a structure that matches the first beam side 141, that is, when the first beam side 141 includes a first section 1411 and a second section 1412, the support plate 147 is also set to a two-section structure, and is respectively corresponding to and parallel to the first section 1411 and the second section 1412.

[0144] Furthermore, the support plate 147 can be provided as one piece, and divide the inner cavity 146 of the limiting beam 14 into two sub-cavities arranged sequentially along the first direction a. Of course, the support plate 147 can also be provided as two or more pieces, and divide the inner cavity 146 of the limiting beam 14 into multiple sub-cavities.

[0145] Therefore, by providing the support plate 147 , the internal cavity 146 of the limiting beam 14 is divided, so that the limiting beam 14 forms a multi-cavity structure, thereby being able to resist a greater expansion force and provide a better support effect.

[0146] In some embodiments, the limiting beam 14 includes at least one first sub-rib 148 and at least one second sub-rib 149 , the first sub-rib 148 is connected between the first beam side 141 and the support plate 147 , and the second sub-rib 149 is connected between the support plate 147 and the second beam side 142 .

[0147] Specifically, when the inner cavity 146 is divided into two sub-cavities by the support plate 147, the first sub-rib 148 can be disposed in the sub-cavity between the first beam side surface 141 and the support plate 147, so that the first sub-rib 148 is supported between the first beam side surface 141 and the support plate 147. The second sub-rib 149 can be disposed in the sub-cavity between the support plate 147 and the second beam side surface 142, so that the second sub-rib 149 is supported between the support plate 147 and the second beam side surface 142.

[0148] Furthermore, a plurality of the first sub-ribs 148 and the second sub-ribs 149 can be provided and spaced apart in the vertical direction to improve the supporting effect.

[0149] By providing the first sub-rib 148 and the second sub-rib 149 , the first beam side 141 , the support plate 147 and the second beam side 142 can be better supported, thereby improving the structural strength of the limiting beam 14 and the supporting stability of the limiting beam 14 on the battery cell 20 .

[0150] In some embodiments, the support plate 147 includes a first sub-plate 1471 and a second sub-plate 1472 connected to each other, the second sub-plate 1472 is tilted toward the second beam side 142, and the first sub-plate 1471 and the second sub-plate 1472 are coplanar; or, the first sub-plate 1471 is parallel to the second beam side 142.

[0151] Specifically, the first sub-plate 1471 corresponds to the second section 1412 and is arranged parallel to each other, and the first sub-plate 1471 corresponds to the first section 1411 and is arranged parallel to each other. Therefore, the second sub-plate 1472 and the second section 1412 are both arranged at an angle with the second beam side surface 142, and the angles are equal.

[0152] With the above structure, when the limiting beams 14 are used to support the battery cells 20 , the expansion force on the large surface of the battery cells 20 can be better transferred to the support beams 18 through the limiting beams 14 , and further transferred to the box body 13 .

[0153] In some embodiments, one end of a first sub-rib 148 is fixedly connected to the connection between the first section 1411 and the second section 1412, and the other end of the first sub-rib 148 is fixedly connected to the connection between the first sub-plate 1471 and the second sub-plate 1472, and one end of a second sub-rib 149 is fixedly connected to the connection between the first sub-plate 1471 and the second sub-plate 1472, and the other end of the second sub-rib 149 is connected to the second beam side 142.

[0154] Specifically, the first sub-rib 148 is arranged between the first beam side 141 and the support plate 147, and one end of one of the first sub-ribs 148 is arranged at the connection between the first section 1411 and the second section 1412, and the other end is arranged at the connection between the first sub-plate 1471 and the second sub-plate 1472, thereby improving the structural stability of the first beam side 141 and the support plate 147.

[0155] Second sub-ribs 149 are disposed between support plate 147 and second beam side surface 142. One end of one second sub-rib 149 is positioned at the junction of first sub-plate 1471 and second sub-plate 1472, while the other end is connected to middle section 1422 of second beam side surface 142. This not only improves the connection stability between support plate 147 and second beam side surface 142, but also better constrains expansion deformation in the middle region of the large surface of battery cell 20.

[0156] Through the above structure, not only can the connection stability between the first section 1411 and the second section 1412, and between the first sub-plate 1471 and the second sub-plate 1472 be improved, but also the expansion force on the battery cell 20 can be smoothly transmitted to the support plate 147 and the first beam side 141 through the first sub-rib 148 and the second sub-rib 149, and finally transmitted to the box body 13 through the support beam 18.

[0157] The first sub-rib 148 is arranged parallel to the first direction a, and the second sub-rib 149 is arranged obliquely relative to the first direction a. Thus, when the battery cell 20 generates an expansion and deformation force during cycling, the second sub-rib 149 connected to the second beam side 142 can redirect the expansion and deformation force generated in the first direction a and transmit it to the support plate 147. The support plate 147 then transmits the expansion and deformation force along the first direction a to the first beam side 142 via the first sub-rib 148, thereby transmitting the expansion and deformation force to the support beam 18. This improves the overall rigidity of the limiting beam 14 in resisting deformation in the first direction a, effectively preventing excessive expansion and deformation of the battery cell 20 during cycling.

[0158] In some embodiments, the limiting beam 14 includes a plurality of first sub-ribs 148 and a plurality of second sub-ribs 149, two adjacent first sub-ribs 148 are spaced apart from each other and arranged in parallel, and / or at least two adjacent second sub-ribs 149 are spaced apart from each other and have opposite inclination directions relative to the first direction a.

[0159] In some embodiments, at least one second sub-rib 149 and the corresponding first sub-rib 148 are connected to the same position of the support plate 147 .

[0160] Specifically, two adjacent second sub-ribs 149 are spaced apart from each other and have opposite inclination directions relative to the first direction a, and the position where the second sub-ribs 149 are connected to the second beam side surface 142 is set in the middle section 1422 of the second beam side surface 142, so as to better support the battery cell 20 through the second sub-ribs 149 and restrain the expansion force on the large surface of the battery cell 20.

[0161] Furthermore, two adjacent first sub-ribs 148 are spaced apart from each other and arranged in parallel, which can better transfer the force on the support plate 147 to the first beam side surface 141 .

[0162] In addition, each second sub-rib 149 is disposed at the same position on the support plate 147 as the corresponding first sub-rib 148 , so that the support plate 147 is subjected to uniform force.

[0163] Through the above structure, the overall structural strength of the limiting beam 14 can be improved, so as to better support the battery cell 20 and form a stable constraint on the expansion force of the battery cell 20.

[0164] In some embodiments, the second beam side surface 142 includes an upper section 1421, a middle section 1422, and a lower section 1423 evenly divided along its height direction, and the number of second sub-ribs 149 connected to the middle section 1423 is not less than the number of second sub-ribs 149 connected to the upper section 1421 or the lower section 123.

[0165] In some embodiments, all second sub-ribs 149 are connected by the middle section 1422 .

[0166] Specifically, the second sub-rib 149 is the supporting rib 143 . Setting the connection position between the second sub-rib 149 and the second beam side surface 142 in the middle section 1422 enables the second sub-rib 149 to better support and constrain the middle area of ​​the large surface of the battery cell 20 .

[0167] Referring again to Figures 5, 6, and 7, in some embodiments, the limiting beam 14 extends along the second direction b, and the first direction a intersects the second direction b. The battery 10 includes a plurality of support beams 18, which are arranged at intervals along the second direction b and are connected between the first beam side surface 141 and the inner wall of the box body 13 along the first direction a.

[0168] Specifically, the first direction a and the second direction b are perpendicular to each other. The first direction a is set as the length direction of the box body 13 , and the second direction b is set as the width direction of the box body 13 .

[0169] Multiple support beams 18 can be provided and spaced apart from each other along the second direction b. One end of each support beam 18 abuts against the first beam side surface 141 of the limiting beam 14, corresponding to the middle position of the large surface of the battery cell 20, and the other end abuts against the inner wall of the box body 13, so as to better transmit the expansion force on the large surface of the battery cell 20 to the box body 13, thereby constraining the expansion of the large surface of the battery cell 20.

[0170] Through the above structure, the support beam 18 can be better supported between the limiting beam 14 and the box body 13, and the expansion force on the battery cell 20 can be smoothly transferred to the box body 13 through the support beam 18, providing a better anti-expansion effect.

[0171] Furthermore, the battery 100 includes a plurality of battery cells 20, which are arranged in multiple rows. The battery cells 20 in each row are arranged sequentially along the first direction a. The limiting beams 14 abut against opposite ends of each row of battery cells 20 along the first direction a, with the larger surfaces of the battery cells 20 at the two ends of each row abutting against the second beam side surface 142 of the limiting beam 14.

[0172] Furthermore, the ends of the fixing member 15 are fixed to the limiting beams 14 on both sides, and at the same time, the support beam 18 is supported between the first beam side surface 141 of the limiting beam 14 and the inner wall of the box body 13. In this way, the battery cells 20 in the accommodating space 16 are restrained and supported.

[0173] Based on the same concept as the above-mentioned battery 100, the present application also provides an electrical device, including the above-mentioned battery 100, and the battery 100 is used to provide electrical energy to the electrical device.

[0174] According to one or more embodiments, two limiting beams 14 are respectively arranged inside the box body 13 along the first direction a, and then the battery cell 20 is placed in the accommodating space 16 formed by the limiting beams 14 and the box body 13, and the large surface of the battery cell 20 is abutted against the second beam side surface 142 of the limiting beam 14.

[0175] Furthermore, the fixing member 15 is extended along the first direction a and connected to the two limiting beams 14 at opposite ends. Structural adhesive is then applied between the fixing member 15 and the top cover of the battery cell 20 to connect them. Multiple fixing members 15 can be provided, and each fixing member 15 can be spaced apart along the second direction b and connected to the limiting beams 14.

[0176] Next, support beams 18 are extended along the first direction a and supported between the limiting beams 14 and the inner wall of the box body 13. When the battery cells 20 expand, the limiting beams 14 and support beams 18 constrain and support the battery cells 20. Furthermore, the fixing members 15 exert a tensile force on the two limiting beams 14. The fixing members 15 are secured to the battery cells 20, further strengthening the restraining force on the battery cells 20. Finally, the expansion force on the battery cells 20 is transferred to the box body 13 via the support beams 18, effectively preventing expansion.

[0177] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0178] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery comprising a battery cell and a housing, wherein the housing comprises: Box body; At least two limiting beams are spaced apart along a first direction within the box body, wherein two adjacent limiting beams and the box body enclose a storage space for accommodating a battery cell; at least one limiting beam includes a first beam side surface and a second beam side surface disposed opposite to each other along the first direction, wherein the second beam side surface is configured as a vertical plane for abutting against a large surface of the battery cell, the large surface being the surface with the largest surface area of ​​the battery cell, and at least a portion of the first beam side surface is inclined toward the second beam side surface; and A fixing member extends along the first direction and is connected between two adjacent limiting beams, and is used to limit the two adjacent limiting beams along the first direction.

2. The battery according to claim 1, wherein The fixing member has a connecting surface, which is arranged toward the accommodating space and is used to connect with the battery cell in the accommodating space.

3. The battery according to claim 2, wherein The box body further includes a connecting member, which is arranged between the connecting surface and the top cover of the battery cell and is used to connect the fixing member and the battery cell.

4. The battery according to claim 3, wherein The connecting member includes an adhesive.

5. The battery according to any one of claims 1 to 4, wherein The fixing member is detachably connected to the limiting beam.

6. The battery according to any one of claims 1 to 5, wherein: The box body further includes a support beam connected between a side surface of the first beam and an inner wall of the box body along the first direction.

7. The battery according to claim 6, wherein The limiting beam extends along a second direction, and the first direction and the second direction are intersecting; The box body includes a plurality of support beams, which are arranged at intervals along the second direction and are respectively connected between the side surfaces of the first beam and the inner wall of the box body along the first direction.

8. The battery according to claim 6 or 7, wherein The side surface of the first beam includes a first section and a second section connected to each other, one end of the support beam is connected to the first section along the first direction, and the second section is inclined toward the side surface of the second beam; The first section and the second section are arranged on the same plane; or the first section and the second beam side Surface parallel setting.

9. The battery according to claim 8, wherein An included angle A is formed between the second beam side surface and the second section, and 0°<A≤20°.

10. The battery according to claim 8 or 9, wherein The limiting beam includes at least one supporting rib connected between the first beam side surface and the second beam side surface.

11. The battery according to claim 10, wherein The supporting ribs are arranged obliquely relative to the first direction.

12. The battery according to claim 10 or 11, wherein The limiting beam includes a plurality of support ribs, and at least two adjacent support ribs are spaced apart from each other and have opposite inclination directions relative to the first direction.

13. The battery according to claim 12, wherein One end of at least one of the supporting ribs away from the side surface of the second beam is fixedly connected to the connection between the first section and the second section.

14. The battery according to any one of claims 10 to 13, wherein: The side surface of the second beam includes an upper section, a middle section and a lower section evenly divided along the height direction thereof; The number of the supporting ribs connected to the middle section is not less than the number of the supporting ribs connected to the upper section or the lower section.

15. The battery according to claim 14, wherein One end of all the support ribs is connected to the middle section.

16. The battery according to any one of claims 8 to 15, wherein: The limiting beam further includes a top surface and a bottom surface; The top surface and the bottom surface are respectively connected to two ends of the first beam side surface and the second beam side surface to enclose an inner cavity of the limiting beam.

17. The battery according to claim 16, wherein The limiting beam includes a support plate; The support plate is connected between the top surface and the bottom surface to divide the inner cavity of the limiting beam into at least two sub-cavities.

18. The battery according to claim 17, wherein The limiting beam includes at least one first sub-rib and at least one second sub-rib, the first sub-rib is connected between the first beam side and the support plate, and the second sub-rib is connected between the support plate and the second beam side.

19. The battery according to claim 18, wherein The support plate includes a first sub-plate and a second sub-plate connected to each other, and the second sub-plate is tilted toward the side of the second beam; The first sub-plate and the second sub-plate are arranged coplanarly; or, the first sub-plate and the side surface of the second beam are arranged parallel to each other.

20. The battery according to claim 19, wherein One end of one of the first sub-ribs is fixedly connected to the connection between the first section and the second section; and the other end of the first sub-rib is fixedly connected to the connection between the first sub-plate and the second sub-plate; One end of one of the second sub-ribs is fixedly connected to the connection between the first sub-plate and the second sub-plate, and the other end of the second sub-rib is connected to the side surface of the second beam.

21. The battery according to any one of claims 18 to 20, wherein The first sub-rib is arranged parallel to the first direction, and the second sub-rib is arranged obliquely relative to the first direction.

22. The battery according to any one of claims 18 to 21, wherein The limiting beam includes a plurality of the first sub-ribs and a plurality of the second sub-ribs.

23. The battery according to claim 22, wherein Two adjacent first sub-ribs are spaced apart from each other and arranged in parallel.

24. The battery according to claim 22 or 23, wherein At least two adjacent second sub-ribs are spaced apart from each other and have opposite inclination directions relative to the first direction.

25. The battery according to any one of claims 18 to 24, wherein At least one of the second sub-ribs is connected to the same position of the support plate as the corresponding first sub-rib.

26. The battery according to any one of claims 18 to 25, wherein The side surface of the second beam includes an upper section, a middle section and a lower section evenly divided along its height direction, and the number of the second sub-rebars connected to the middle section is not less than the number of the second sub-rebars connected to the upper section or the lower section.

27. The battery according to claim 26, wherein All of the second sub-rebars are connected to the middle section.

28. An electrical device comprising the battery according to any one of claims 1 to 27, wherein the battery is used to provide electrical energy for the electrical device.

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