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 filed on March 29, 2024, with application number 2024206464329 and entitled "Battery and Electrical Device", the entire contents of which are incorporated herein by reference. Technical Field

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

[0004] A single battery cell is the smallest unit that makes up a battery. During cycling, electrochemical reactions occur inside the battery cell, causing it to expand. As the battery cell continues to expand, it will affect the overall performance of the battery.

[0005] Therefore, when individual battery cells are placed inside a casing, a supporting structure is needed to constrain their expansion. However, current supporting structures have poor anti-expansion performance and cannot provide sufficient support and constraint for the expansion of individual battery cells.

[0006] Summary of the Invention

[0007] Therefore, it is necessary to provide a battery and power device to address the problem that the current support structure has poor anti-expansion effect and cannot provide sufficient support and constraint for the expansion of battery cells.

[0008] In a first aspect, this application provides a battery, including a battery cell and a housing. The housing includes a housing body, at least two limiting beams, and a fixing member. Each limiting beam is spaced apart within the housing body along a first direction. Two adjacent limiting beams and the housing body enclose a receiving space for accommodating the battery cell. At least one limiting beam includes a first beam side and a second beam side arranged opposite to each other along the first direction. The second beam side 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. At least a portion of the first beam side is inclined toward the second beam side. The fixing member extends along the first direction and connects between two adjacent limiting beams for limiting the two adjacent limiting beams along the first direction.

[0009] With the above structure, the limiting beams can constrain the battery cells within the accommodating space. The first side of the limiting beam can abut against the large surface of the battery cell, while the second side is angled with at least a portion of the first side, allowing the limiting beams to more stably support and constrain the expansion of the battery cell's large surface. Furthermore, the fixing members can limit the position of each limiting beam along a first direction, reducing the probability of the limiting beams tipping over under the expansion deformation of the battery cells, further improving the expansion constraint force on the battery cells.

[0010] In some embodiments, the fastener has a connecting surface facing the receiving space and is used to connect to a battery cell within the receiving space.

[0011] By connecting the fastener to the battery cell within the housing space via the connecting surface, the constraint force of the fastener on the battery cell can be further enhanced.

[0012] In some embodiments, the housing further includes a connector disposed between the connecting surface and the top cover of the battery cell, for connecting the fixing member and the battery cell.

[0013] By setting up connectors, a quick and stable connection can be made between the connecting surface and the top cover of the battery cell, thereby further enhancing the constraint of the fasteners on the battery cell.

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

[0015] In some embodiments, the fastener and the limiting beam are detachably connected. This allows for more flexible assembly and disassembly of the fastener and each limiting beam, facilitating operation.

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

[0017] Therefore, the support beam allows the side of the second beam of the limiting beam to better contact the large surface of the battery cell, providing stable support for the battery cell. Furthermore, the support beam also enables the expansion force from the battery cell to be smoothly transferred to the casing body, providing better anti-expansion performance.

[0018] In some embodiments, the limiting beam extends along a second direction, and the first direction intersects with the second direction;

[0019] The box body includes multiple support beams, which are spaced apart along a second direction and connected along a first direction between the side of the first beam and the inner wall of the box body.

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

[0021] In some embodiments, the side of the first beam includes a first section and a second section connected together, 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 of the second beam; the first section and the second section are coplanar; or, the first section and the side of the second beam are parallel.

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

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

[0024] In some embodiments, the side of the second beam and the second segment have an angle A, where 0° < A ≤ 20°.

[0025] Therefore, by setting the included angle between the side of the second beam and the second section within the aforementioned range, the supporting force of the limiting beam on the battery cell can be improved, while the installation space inside the box body can be better utilized, thus improving space utilization.

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

[0027] In some embodiments, the limiting beam includes at least one support bar, which is connected between the side of the first beam and the side of the second beam.

[0028] The above structure can improve the support force between the side of the first beam and the side of the second beam, so that the limiting beam can support the battery cell more stably.

[0029] In some embodiments, the support ribs are inclined relative to the first direction. Thus, when a battery cell generates expansion and deformation forces during cycling, the support ribs connected to the side of the second beam can redirect the expansion and deformation forces obtained in the first direction to the side of the first beam, and then to the support beam. This increases the overall stiffness of the limiting beam against deformation in the first direction, effectively preventing excessive expansion and deformation of the battery cell during cycling.

[0030] In some embodiments, the limiting beam includes a plurality of support ribs, at least two adjacent support ribs being spaced apart from each other and having an inclination direction opposite to that of the first direction.

[0031] By adding support 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 at one end away from the side of the second beam to the connection between the first segment and the second segment. This structure enhances the overall stability of the limiting beam.

[0033] In some embodiments, the side of the second beam includes an upper section, a middle section, and a lower section that are equally divided along its height direction; the number of support bars connected to the middle section is not less than the number of support bars connected to the upper section or the lower section.

[0034] The above structure enables the support ribs to better support and constrain the central 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. This allows all the support ribs to provide support to the middle area of ​​the large surface of the battery cell, better constraining 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, which are respectively connected to the two ends of the side surfaces of the first beam and the second beam to enclose the internal cavity of the limiting beam.

[0037] The aforementioned structure creates an internal cavity for the limiting beam, effectively making it a hollow structure and reducing its weight. Therefore, when the limiting beam is located inside the casing, the overall weight of the casing and battery is reduced.

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

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

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

[0041] By setting the first sub-reinforcement and the second sub-reinforcement, the side of the first beam, the support plate and the side of the second beam can be better supported, thereby improving the structural strength of the limiting beam and the stability of the limiting beam in supporting the battery cell.

[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 being inclined toward the side of the second beam, and the first sub-plate and the second sub-plate being coplanar; or, the first sub-plate being 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 support beam through the limiting beam, and then to the box body.

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

[0045] The above structure not only improves the connection stability between the first and second sections and between the first and second sub-plates, but also enables the expansion force on the battery cell to be smoothly transferred to the support plate and the side of the first beam through the first and second sub-ribs, and finally transferred to the box body through the support beam.

[0046] The first sub-rib is arranged parallel to the first direction, and the second sub-rib is arranged at an angle relative to the first direction. Thus, when a battery cell generates expansion and deformation forces during cycling, the second sub-rib, connected to the side of the second beam, can redirect the expansion and deformation forces obtained in the first direction and transmit them to the support plate. The support plate then transmits these forces to the side of the first beam along the first direction via the first sub-rib, thereby transferring the expansion and deformation forces to the support beam. This improves the overall stiffness of the limiting beam against deformation in the first direction, effectively preventing excessive expansion and deformation of the battery cell during cycling.

[0047] In some embodiments, the limiting beam includes a plurality of first sub-reinforcements and a plurality of second sub-reinforcements; two adjacent first sub-reinforcements are spaced apart from each other and arranged in parallel; and / or, at least two adjacent second sub-reinforcements are spaced apart from each other and are inclined in the opposite direction to the first direction.

[0048] In some embodiments, at least one second sub-reinforcement bar is connected to the corresponding first sub-reinforcement bar at the same location on the support plate.

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

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

[0051] In some embodiments, all second sub-reinforcements are connected to the intermediate section.

[0052] The above structure enables the second sub-rib to better support and constrain the central area of ​​the large surface of the battery cell.

[0053] Secondly, this application also provides an electrical device, including the battery as described above, which is used to provide electrical energy to the electrical device.

[0054] The aforementioned battery and electrical device place the battery cells within a receiving space. Limiting beams at both ends constrain the battery cells within the receiving space. The first side of the limiting beam abuts against the large surface of the battery cell, while the second side forms an angle with at least a portion of the first side, allowing the limiting beams to more stably support and constrain the expansion of the battery cell's large surface. Furthermore, a fixing member can limit each limiting beam along a first direction, reducing the probability of the limiting beams tipping over due to the expansion deformation of the battery cell, further enhancing the constraint force on the battery cell's expansion. Attached Figure Description

[0055] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0056] Figure 1 is a structural schematic diagram of a vehicle according to one or more embodiments.

[0057] Figure 2 is an exploded structural diagram of a battery according to one or more embodiments.

[0058] Figure 3 is a schematic diagram of the exploded structure of a battery cell according to one or more embodiments.

[0059] Figure 4 is a structural schematic diagram of the box according to one or more embodiments.

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

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

[0062] Figure 7 is a magnified view of part B in Figure 6.

[0063] Figure 8 is a partial schematic diagram of a housing according to one or more embodiments.

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

[0065] Explanation of reference numerals in the attached drawings: 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, fastener; 16, accommodating space; 17, connector; 18, support beam; 21, end cap; 22, housing; 23, electrode assembly; 141, side of the first beam; 142, the... Side of the two beams; 143, Supporting reinforcement; 144, Top surface; 145, Bottom surface; 146, Internal cavity; 147, Support plate; 148, First sub-reinforcement; 149, Second sub-reinforcement; 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 Implementation

[0066] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0067] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0068] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., shall be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, 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 possible implementation.

[0072] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0073] A single battery cell is the smallest unit that makes up a battery. During cycling, electrochemical reactions occur inside the battery cell, causing it to expand. As the battery cell continues to expand, it will affect the overall performance of the battery.

[0074] Therefore, to prevent battery cells from continuously expanding during cycling and causing performance degradation, a support structure is usually installed inside the battery casing to support and constrain the battery cells. However, current support structures have poor anti-expansion performance and cannot provide sufficient support and constraint against the expansion of 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 constraint for the expansion of the battery cell, one or more embodiments of this application provide a battery and an electrical device. The battery cell is placed in a receiving space, and the limiting beams at both ends can constrain the battery cell in the receiving space. The side of the first beam of the limiting beam can abut against the large surface of the battery cell, and at least part of the side of the first beam is inclined towards the side of the second beam, so that the limiting beam can more stably support and constrain the expansion on 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 expansion deformation of the battery cell, and further improving the expansion constraint force on the battery cell.

[0076] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0077] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0078] Referring to Figure 1, vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is installed inside vehicle 1000, which can be located at the bottom, front, or rear of vehicle 1000. Battery 100 can be used to power vehicle 1000; for example, battery 100 can serve as the operating power source for vehicle 1000. Vehicle 1000 may also include a controller 200 and a motor 300. Controller 200 controls the battery 100 to supply power to motor 300, for example, to meet the power needs of vehicle 1000 during startup, navigation, and driving.

[0079] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the 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 a battery cell 20, with the battery cell 20 housed inside the housing 10. The housing 10 provides a space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which overlap each other, jointly defining a space for accommodating the battery cell 20. The second portion 12 can be a hollow structure with one open end, and the first portion 11 can be a plate-like structure, covering the open side of the second portion 12 so that the first portion 11 and the second portion 12 jointly define the space. Alternatively, both the first portion 11 and the second portion 12 can be hollow structures with one open side, with the open side of the first portion 11 covering 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 cuboid, etc.

[0081] In battery 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, battery 100 can also be composed of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 10. Battery 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0082] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0083] Please refer to Figure 3. The battery cell 20 refers to the smallest unit that makes up the battery. As shown in Figure 3, the battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0084] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. In some embodiments, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is less prone to deformation under pressure and impact, enabling battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy into battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0085] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0086] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly, while the portions without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0087] Please refer to Figures 4, 5, 6, and 7. One embodiment of this application provides a battery 100, a housing 10, and individual battery cells 20. The housing 10 includes a main body 13, limiting beams 14, and fasteners 15. The limiting beams 14 include at least two beams, spaced apart along a first direction a within the housing 13. Two adjacent limiting beams 14 and the housing 13 enclose a receiving space 16 for accommodating the individual battery cells 20. At least one limiting beam 14 includes a first beam side 141 and a second beam side 142 arranged opposite each other along the first direction a. The second beam side 142 is configured as a vertical plane for contacting the large surface area of ​​the individual battery cell 20, which is the surface with the largest surface area in the individual battery cell 20. At least a portion of the first beam side 141 is inclined towards the second beam side 142. The fasteners 15 extend along the first direction a and connect between two adjacent limiting beams 14, used to limit the movement of the two adjacent limiting beams 14 along the first direction a.

[0088] It should be noted that the housing body 13 refers to a structure with a hollow interior, which provides a base for the installation and housing of the battery cell 20 and other structures in the battery 100. When the battery cell 20 is placed inside the housing body 13, the housing body 13 can provide a closed and stable environment for the battery cell 20, thus providing a certain degree of protection for the battery cell 20.

[0089] The limiting beam 14 refers to a structure disposed inside the housing body 13 that supports the battery cell 20 to constrain its expansion deformation. Two limiting beams 14 can be provided, respectively disposed on opposite sides of the housing body 13 along the first direction a. In this way, the two limiting beams 14 and the inner wall of the housing body 13 together enclose a receiving space 16, within which the battery cell 20 can be placed.

[0090] The large surface of a battery cell 20 refers to the surface with the largest surface area in the battery cell 20. Specifically, the battery cell 20 is usually set as a rectangular structure, so the large surface of the battery cell 20 usually includes two, 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 141 and a second beam side 142 disposed opposite to each other along a first direction a. The second beam side 142 is disposed facing the large surface of the battery cell 20 within the receiving space 16 and extends in a vertical direction. When the battery cell 20 is placed within the receiving space 16, the second beam side 142 of the limiting beam 14 can abut against the large surface of the battery cell 20, thereby providing good support for the large surface of the battery cell 20.

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

[0093] Understandably, in some other embodiments, the number of limiting beams 14 may also be set to more, and each pair of adjacent limiting beams 14 are spaced apart along the first direction a, thereby enclosing a receiving space 16 between the beams and the inner wall of the box body 13, and each receiving space 16 can be used to install the battery cell 20.

[0094] In addition, the fastener 15 refers to a structure that can be connected to each limiting beam 14 and limit each limiting beam 14 along the first direction a, so as to better fix the battery cell 20 in the receiving space 16.

[0095] Specifically, the fastener 15 may be, but is not limited to, a steel strip structure, and the steel strip extends along the first direction a. Taking the setting of two limiting beams 14 as an example, the opposite ends of the steel strip in the first direction a are respectively connected to the two limiting beams 14, 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 strip can tighten the limiting beams 14 at both ends through tension, reducing the probability of the limiting beams 14 tipping over due to the expansion force of the battery cell 20, thereby making the support and constraint of the limiting beams 14 on the battery cell 20 more stable.

[0097] Through the above structure, the limiting beam 14 can constrain the battery cell 20 within the accommodating space 16. The first beam side 141 of the limiting beam 14 can abut against the large surface of the battery cell 20, while the second beam side 142 is angled with at least a portion of the first beam side 141, allowing the limiting beam 14 to more stably support and constrain the expansion of the battery cell 20. Furthermore, the fixing member 15 can limit each limiting beam 14 along the first direction a, reducing the probability of the limiting beam 14 tipping over under the expansion deformation of the battery cell 20, further improving the expansion constraint force on the battery cell 20.

[0098] In some embodiments, the fastener 15 has a connecting surface (not shown) facing the receiving space 16 and is used to connect to the battery cell 20 within the receiving space 16.

[0099] Specifically, when the fastener 15 is connected to the top of the two limiting beams 14, the connecting surface is the bottom surface 145 of the fastener 15. When the battery cell 20 is placed in the receiving space 16, the connecting surface faces the battery cell 20.

[0100] Therefore, by connecting the fastener 15 to the battery cell 20 in the receiving space 16 through the connecting surface, the constraint force of the fastener 15 on the battery cell 20 can be further enhanced.

[0101] In some embodiments, the housing 10 further includes a connector 17, which is disposed between the connecting surface and the top cover of the battery cell 20, for connecting the fixing member 15 and the battery cell 20.

[0102] For example, connector 17 includes an adhesive. Specifically, the adhesive may be, but is not limited to, a structural adhesive, i.e., the structural adhesive is applied between the connecting surface and the top cover of the battery cell 20 to fix the fastener 15 to the battery cell 20, thereby enhancing the constraint of the fastener 15 on the battery cell 20.

[0103] Of course, connector 17 can also be configured with other structures, such as double-sided tape or other connection structures, which will not be elaborated here.

[0104] By providing connector 17, a quick and stable connection can be made between the connecting surface and the top cover of the battery cell 20, thereby further enhancing the constraint of the fastener 15 on the battery cell 20.

[0105] In some embodiments, the fastener 15 is detachably connected to each limiting beam 14.

[0106] Specifically, the fastener 15 and each limiting beam 14 can be detachably connected by, but not limited to, bolts, snap-fit ​​connections, or other connection methods. This allows for more flexible assembly and disassembly of the fastener 15 and each limiting beam 14, facilitating operation.

[0107] As shown in Figures 6, 7 and 8, in some embodiments, the battery 10 further includes a support beam 18, which is connected along a first direction a between the side surface 141 of the first beam and the inner wall of the housing body 13.

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

[0109] Therefore, the support beam 18 allows the second beam side 142 of the limiting beam 14 to better contact the large surface of the battery cell 20, providing stable support for the battery cell 20. Furthermore, the support beam 18 can smoothly transfer the expansion force on the battery cell 20 to the housing body 13, providing better anti-expansion performance.

[0110] In some embodiments, the first beam side 141 includes a first section 1411 and a second section 1412 connected together, 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 142; the first section 1411 and the second section 1412 are coplanar; or, the first section 1411 and the second beam side 142 are parallel.

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

[0112] The second section 1412 is set at an angle with the side of the second beam 142, that is, the second section 1412 is set at an angle along the vertical direction, so that the limiting beam 14 forms a structure that is smaller at the top and larger at the bottom, so as to provide more stable support for the battery cell 20.

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

[0114] Furthermore, 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 limiting beam 14 for the battery cell 20 more stable, and the expansion force of the battery cell 20 is smoothly transferred from the limiting beam 14 to the box body 10 through the support beam 18, providing better anti-expansion effect.

[0115] Thus, the above structure makes the support of the limiting beam 14 for the battery cell 20 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 coplanar; or, the first section 1411 and the side surface 142 of the second beam are parallel.

[0117] When the first segment 1411 and the second segment 1412 are coplanar, both segments are inclined along the vertical direction, and their inclination angles are equal. In this case, the first segment 1411 and the second segment 1412 together form an inclined plane. When the support beam 18 abuts against the first segment 1411, the end of the support beam 18 needs to be set to match the slope of the first segment 1411 to ensure a tight connection between the two.

[0118] When the first section 1411 is arranged parallel to the side 142 of the second beam, and the first section 1411 is arranged vertically, the first section 1411 and the second section 1412 intersect. In this case, the support beam 18 is perpendicular to the first section 1411, so that the support beam 18 can more stably abut against the first section 1411.

[0119] Through the above structure, the limiting beam 14 can provide stable support for the battery cell 20. On this basis, the support beam 18 can better abut against the inner wall between the limiting beam 14 and 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 142 and the second segment 1412 have an included angle A, where 0 degrees (°) < A ≤ 20°.

[0121] Specifically, the angle between the side 142 of the second beam and the second section 1412 is the angle at which the second section 1412 is tilted relative to the vertical direction. Therefore, the larger the angle A, the better the support effect of the limiting beam 14 on the battery cell 20. However, this also means that the limiting beam 14 occupies a larger installation space in the housing body 13, which is not conducive to the installation of other structures of the battery 100 inside the housing body 13.

[0122] Therefore, by setting the included angle between the side 142 of the second beam and the second section 1412 within the range described above, the supporting force of the limiting beam 14 on the battery cell 20 can be improved, while the installation space inside the box body 13 can be better utilized, thus improving space utilization.

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

[0124] Specifically, the hollow interior of the limiting beam 14 reduces its weight, thereby reducing the overall weight of the battery 100. Simultaneously, a support rib 143 is provided inside the limiting beam 14, supporting the battery cell 20 between the first beam side 141 and the second beam side 142. This increases the supporting force between the first beam side 141 and the second beam side 142, enabling the limiting beam 14 to more stably support the battery cell 20.

[0125] In some embodiments, the support rib 143 is inclined relative to the first direction a. Thus, when the battery cell 20 generates expansion deformation force during cycling, the support rib 143, connected to the side surface 142 of the second beam, can change the direction of the expansion deformation force obtained in the first direction a and transmit it to the side surface 142 of the first beam, and then to the support beam 18. This improves the overall stiffness of the limiting beam 14 against deformation in the first direction a, effectively preventing excessive expansion deformation of the battery cell 20 during cycling.

[0126] In some embodiments, the limiting beam 14 includes a plurality of support ribs 143, at least two adjacent support ribs 143 being spaced apart from each other and having an inclination direction opposite to that of the first direction a.

[0127] Multiple support ribs 143 can improve the support force on the side of the first beam 141 and the side of the second beam 142. Furthermore, by arranging multiple support ribs 143 at intervals along the vertical direction, uniform multi-point support is formed on the side of the first beam 141 and the side of the second beam 142, thereby improving the support stability.

[0128] Furthermore, the spacing between adjacent support ribs 143 and their opposite inclination relative to the first direction a further improves the support stability.

[0129] By setting the support 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 on the battery cell 20.

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

[0131] Fixing one end of the support rib 143 away from the side 142 of the second beam to the connection between the first section 1411 and the second section 1412 allows the support rib 143 to form a connection between the first section 1411 and the second section 1412, and also provides support for both sections. Therefore, this structure enhances the overall stability of the limiting beam 14.

[0132] In some embodiments, the second beam side 142 includes an upper section 1421, a middle section 1422, and a lower section 1423, which are evenly divided along its height direction. 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 supporting bar 143 connected to the intermediate section 1422 refers to the end of the supporting bar 143 connected to the side surface 142 of the second beam, which falls in the intermediate section 1422 of the side surface 142 of the second beam. Similarly, the end of the supporting bar 143 connected to the side surface 142 of the second beam can also fall in the upper section 1421 or the lower section 1423.

[0134] Specifically, the middle section 1422 of the side surface 142 of the second beam is located between the upper section 1421 and the lower section 1423. When the side surface 142 of the second beam 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 area of ​​the battery cell 20 is the largest, the expansion deformation on the large surface is usually larger, and most of it is 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 provide greater support to the middle section 1422, thereby better supporting and constraining the large surface of the battery cell 20.

[0137] The above structure enables the support rib 143 to better support and constrain the central 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 intermediate section 1422.

[0139] Therefore, one end of all the supporting ribs 143 is set in the middle section 1422, so that all the supporting ribs 143 can support the middle area of ​​the large surface of the battery cell 20, and better constrain 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, which are respectively connected to the two ends of the first beam side surface 141 and the second beam side surface 142 to enclose the internal cavity 146 of the limiting beam 14.

[0141] With the above structure, the limiting beam 14 forms an internal cavity 146, that is, the limiting beam 14 is set as 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 Figures 6 and 9, in some embodiments, the limiting beam 14 includes a support plate 147 connected between the top surface 144 and the bottom surface 145 to divide the internal cavity 146 of the limiting beam 14 into at least two sub-cavities.

[0143] Specifically, the support plate 147 can be configured to match the side surface 141 of the first beam. That is, when the side surface 141 of the first beam includes a first section 1411 and a second section 1412, the support plate 147 is also configured as 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 configured as a single piece, dividing the internal 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 configured as two or more pieces, dividing the internal cavity 146 of the limiting beam 14 into multiple sub-cavities.

[0145] Therefore, by setting 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, which can resist greater expansion force and provide better support effect.

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

[0147] Specifically, when the internal 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 141 and the support plate 147, so that the first sub-rib 148 is supported between the first beam side 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 142, so that the second sub-rib 149 is supported between the support plate 147 and the second beam side 142.

[0148] Furthermore, multiple first sub-reinforcing bars 148 and second sub-reinforcing bars 149 can be provided, and they can be spaced out along the vertical direction to improve the support effect.

[0149] By setting the first sub-reinforcing bar 148 and the second sub-reinforcing bar 149, the side of the first beam 141, the support plate 147 and the side of the second beam 142 can be better supported, thereby improving the structural strength of the limiting beam 14 and the support stability of the limiting beam 14 for 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 inclined toward the side surface 142 of the second beam, and the first sub-plate 1471 and the second sub-plate 1472 are coplanar; or, the first sub-plate 1471 is parallel to the side surface 142 of the second beam.

[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. Thus, the second sub-plate 1472 and the second section 1412 are both arranged at equal angles with the side surface 142 of the second beam.

[0152] With the above structure, when the limiting beam 14 is used to support the battery cell 20, the expansion force on the large surface of the battery cell 20 can be better transmitted to the support beam 18 through the limiting beam 14, and then to the box body 13.

[0153] In some embodiments, one end of a first sub-reinforcement bar 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-reinforcement bar 148 is fixedly connected to the connection between the first sub-plate 1471 and the second sub-plate 1472. One end of a second sub-reinforcement bar 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-reinforcement bar 149 is connected to the side surface 142 of the second beam.

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

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

[0156] The above structure not only improves 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, but also enables the expansion force on the battery cell 20 to be smoothly transferred to the support plate 147 and the side of the first beam 141 through the first sub-rib 148 and the second sub-rib 149, and finally transferred 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 at an angle relative to the first direction a. Thus, when the battery cell 20 generates expansion deformation force during cycling, the second sub-rib 149, connected to the side surface 142 of the second beam, can change the direction of the expansion deformation force obtained in the first direction a and transmit it to the support plate 147. The support plate 147 then transmits this force along the first direction a to the side surface 142 of the first beam via the first sub-rib 148, thereby transferring the expansion deformation force to the support beam 18. This improves the overall stiffness of the limiting beam 14 against deformation in the first direction a, effectively preventing excessive expansion deformation of the battery cell 20 during cycling.

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

[0159] In some embodiments, at least one second sub-reinforcing bar 149 is connected to the corresponding first sub-reinforcing bar 148 at the same location on the support plate 147.

[0160] Specifically, two adjacent second sub-ribs 149 are spaced apart from each other and are inclined in the opposite direction to the first direction a. The second sub-ribs 149 are connected to the side surface of the second beam 142 at the middle section 1422 of the side surface of the second beam, so as to better support the battery cell 20 and constrain the expansion force on the large surface of the battery cell 20 through the second sub-ribs 149.

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

[0162] In addition, each second sub-reinforcing bar 149 and the corresponding first sub-reinforcing bar 148 are positioned in the same place on the support plate 147 to ensure that the force on the support plate 147 is uniform.

[0163] The above structure can improve the overall structural strength of the limiting beam 14, 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 142 includes an upper section 1421, a middle section 1422, and a lower section 1423 that are evenly divided along its height direction, and the number of second sub-reinforcement bars 149 connected to the middle section 1423 is not less than the number of second sub-reinforcement bars 149 connected to the upper section 1421 or the lower section 1423.

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

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

[0167] Please refer 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 with the second direction b. The battery 10 includes multiple support beams 18, which are spaced apart along the second direction b and connected along the first direction a between the side of the first beam 141 and the inner wall of the casing 13.

[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 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 transfer the expansion force on the large surface of the battery cell 20 to the box body 13 and constrain the expansion on the large surface of the battery cell 20.

[0170] With 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 multiple battery cells 20, which are arranged in multiple rows. Each row of battery cells 20 is arranged sequentially along the first direction a. The limiting beam 14 abuts against the opposite ends of each row of battery cells 20 along the first direction a, and the large surface of the battery cells 20 at the very end of each row abuts against the side surface 142 of the second beam of the limiting beam 14.

[0172] Furthermore, the two ends of the fastener 15 are respectively fixed to the limiting beams 14 on both sides. At the same time, the support beam 18 is supported between the first beam side 141 of the limiting beam 14 and the inner wall of the box body 13. Thus, the battery cells 20 in the accommodating space 16 are constrained and supported.

[0173] Based on the same concept as the battery 100 described above, this application also provides an electrical device, including the battery 100 as described above, the battery 100 being used to provide electrical energy to the electrical device.

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

[0175] Furthermore, the fastener 15 extends along the first direction a and is connected to two limiting beams 14 at opposite ends. Then, structural adhesive is applied between the fastener 15 and the top cover of the battery cell 20 to connect them. Multiple fasteners 15 can be provided, and each fastener 15 can be spaced apart along the second direction b and connected to the limiting beams 14 respectively.

[0176] Next, the support beam 18 extends along the first direction a and is supported between the limiting beam 14 and the inner wall of the box body 13. When the battery cell 20 expands, the limiting beam 14 and the support beam 18 can constrain and support the battery cell 20. On this basis, the fixing member 15 can exert a tensile force on the two limiting beams 14, and the fixing member 15 is fixed to the battery cell 20, which can further enhance the constraint force on the battery cell 20. Finally, the expansion force on the battery cell 20 is transferred to the box body 13 through the support beam 18, which achieves a good anti-expansion effect.

[0177] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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 embodiments described above are merely illustrative of several implementation methods of this application, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should 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 within the housing body along a first direction, with adjacent limiting beams and the housing body enclosing a receiving space for accommodating individual battery cells; at least one limiting beam includes a first beam side and a second beam side arranged opposite each other along the first direction, the second beam side being configured as a vertical plane for abutting against the large surface of the individual battery cell, the large surface being the surface with the largest surface area in the individual battery cell, and at least a portion of the first beam side is inclined toward the second beam side; and A fastener extends along the first direction and connects between two adjacent limiting beams for limiting the two adjacent limiting beams along the first direction.

2. The battery according to claim 1, wherein, The fastener has a connecting surface facing the receiving space and is used to connect with the battery cell within the receiving space.

3. The battery according to claim 2, wherein, The housing also includes a connector, which is disposed between the connecting surface and the top cover of the battery cell, for connecting the fixing member and the battery cell.

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

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

6. The battery according to any one of claims 1-5, wherein, The box body also includes a support beam, which is connected along the first direction between the side of the first beam and the inner wall of the box body.

7. The battery according to claim 6, wherein, The limiting beam extends along the second direction, and the first direction and the second direction are intersected; The box body includes multiple support beams, which are spaced apart along the second direction and connected along the first direction between the side of the first beam and the inner wall of the box body.

8. The battery according to claim 6 or 7, wherein, The side of the first beam includes a first section and a second section connected together. 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 of the second beam. The first section and the second section are arranged in the same plane; or, the first section is arranged parallel to the side of the second beam.

9. The battery according to claim 8, wherein, The side of the second beam and the second section form an angle A, where 0° < A ≤ 20°.

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

11. The battery according to claim 10, wherein, The supporting rib is inclined relative to the first direction.

12. The battery according to claim 10 or 11, wherein, The limiting beam includes multiple supporting ribs, with at least two adjacent supporting ribs spaced apart from each other and in the opposite direction of inclination to the first direction.

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

14. The battery according to any one of claims 10-13, wherein, The second beam side includes an upper section, a middle section and a lower section that are equally divided along its height direction; The number of support ribs connected to the intermediate section is not less than the number of support ribs connected to the upper section or the lower section.

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

16. The battery according to any one of claims 8-15, wherein, The limiting beam also includes a top surface and a bottom surface; The top surface and the bottom surface are respectively connected to the two ends of the side surface of the first beam and the side surface of the second beam to enclose the internal 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 internal 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-reinforcing bar and at least one second sub-reinforcing bar. The first sub-reinforcing bar is connected between the side of the first beam and the support plate, and the second sub-reinforcing bar is connected between the support plate and the side of the second beam.

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, with the second sub-plate inclined toward the side of the second beam; The first sub-plate and the second sub-plate are arranged on the same plane; or, the first sub-plate is arranged parallel to the side of the second beam.

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-reinforcement bars is fixedly connected to the connection between the first sub-slab and the second sub-slab, and the other end of the second sub-reinforcement bar is connected to the side of the second beam.

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

22. The battery according to any one of claims 18-21, wherein, The limiting beam includes multiple first sub-reinforcement bars and multiple second sub-reinforcement bars.

23. The battery according to claim 22, wherein, The 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 are inclined in the opposite direction to the first direction.

25. The battery according to any one of claims 18-24, wherein, At least one of the second sub-reinforcement bars is connected to the corresponding first sub-reinforcement bar at the same location on the support plate.

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

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

28. An electrical device comprising a battery as described in any one of claims 1-27, the battery being used to provide electrical energy to the electrical device.

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