Battery, electric device, and vehicle

Abstract

A battery (100), an electric device, and a vehicle (1000), relating to the technical field of batteries. The battery (100) comprises: a case (10), wherein an accommodating space is formed inside the case (10); at least one structural beam (30) located in the accommodating space and connected to the case (10); and battery cells (20) located in the accommodating space, wherein at least one side of the structural beam (30) in a first direction (X) is respectively provided with the battery cells (20), a gap is formed between the structural beam (30) and the battery cells (20), the gap is filled with an adhesive layer (40), the structural beam (30) is bonded to the battery cells (20) by means of the adhesive layer (40), two ends of the structural beam (30) in a second direction (Y) include a first end (34) and a second end (35), and the second direction (Y) is perpendicular to a length direction (Z) of the structural beam (30). Injecting glue into the gap can form the adhesive layer (40) in the gap, and glue injection can be realized without reserving a space between the first end (34) of the structural beam (30) and the battery cells (20), thereby reducing the size of the end portions of the structural beam (30) and the battery cells (20) facing away from each other, improving the space utilization rate, and improving the volumetric energy density of the battery (100).

Description

Battery, electric device and vehicle

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application 202421302815.0, filed on June 7, 2024, entitled “Battery, electric device and vehicle”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a battery, an electric device and a vehicle. BACKGROUND

[0004] In the production process of the battery, glue needs to be injected between the battery monomer and the beam. In order to facilitate the injection of glue between the battery monomer and the beam by the glue injection nozzle, the beam and the battery monomer need to be moved away from each other in a direction, so that the beam and the battery monomer have a reserved glue injection space, to facilitate the adhesion of the beam and the battery monomer by the glue injection method. This results in that in the limited space, the glue injection space occupies a part of the space inside the battery, thereby reducing the space utilization rate inside the battery, resulting in a low energy density of the battery.

[0005] SUMMARY

[0006] In view of the above problems, the present application provides a battery, an electric device and a vehicle, which can improve the space utilization rate of the battery.

[0007] In a first aspect, the present application provides a battery, comprising:

[0008] a box body, an accommodation space being formed in the interior of the box body;

[0009] at least one structural beam, located in the accommodation space and connected with the box body;

[0010] a battery monomer, located in the accommodation space, the structural beam being provided with the battery monomer on at least one side in a first direction, a gap being formed between the structural beam and the battery monomer, the gap being filled with a glue layer, the structural beam being adhered to the battery monomer through the glue layer, the structural beam including a first end and a second end at two ends in a second direction, the second direction being perpendicular to the length direction of the structural beam, the second direction and the length direction of the structural beam respectively intersecting the first direction, the first end abutting against the edge of the battery monomer, and a gap being provided between the second end and the edge of the battery monomer.

[0011] The glue injection into the gap can form a glue layer in the gap, and the first end of the structural beam and the battery cell do not need to reserve space, so that the glue injection can be realized, thereby reducing the size of the end of the structural beam and the battery cell away from each other, reducing the occupied space of the battery cell and the structural beam, thereby improving the space utilization of the box, and improving the volume energy density of the battery; meanwhile, the glue nozzle is convenient to fill the glue layer in the gap, thereby facilitating the bonding between the structural beam and the battery cell.

[0012] In some embodiments, the gap increases along the direction from the first end to the second end. Thus, the area of the adhesive surface of the glue during the glue injection process can be increased, thereby enabling the battery cell and the structural beam to be more firmly connected together, and facilitating the glue injection operation.

[0013] In some embodiments, the size of the structural beam along the first direction decreases along the direction from the first end to the second end. Thus, compared with the structure in which the size of the structural beam along the first direction remains unchanged along the direction from the first end to the second end, the contact area between the structural beam and the glue layer can be increased, thereby improving the connection reliability between the structural beam and the battery cell, and the gap between the structural beam and the battery cell along the direction from the first end to the second end can increase, thereby facilitating the filling of the glue layer.

[0014] In some embodiments, the surface of the structural beam facing the battery cell is a curved surface, and any cross section of the curved surface is a concave curve or a convex curve, and the cross section is perpendicular to the length direction of the structural beam; or the surface of the structural beam facing the battery cell is a plane. Thus, the size of the structural beam along the first direction decreases along the direction from the first end to the second end, so that the gap between the structural beam and the battery cell increases along the direction from the first end to the second end; and compared with the structure in which the size of the structural beam along the first direction remains unchanged along the direction from the first end to the second end, the contact area between the structural beam and the glue layer can be increased, thereby improving the connection reliability between the structural beam and the battery cell.

[0015] In some embodiments, the surface of the side of the structural beam facing the battery cell is a first plane, and the included angle between the first plane and the longitudinal cross section of the structural beam perpendicular to the second direction is r, wherein 5°≤r≤60°.

[0016] With the increase of r, the size of the structural beam in the first direction becomes larger, and the gap becomes smaller, so that the support strength of the structural beam increases, and the thickness of the adhesive layer decreases, and the bonding strength decreases. When r = 5°, compared with r = 60°, the bonding strength between the structural beam and the battery cell is larger, and the strength of the structural beam is smaller, which can basically meet the support demand; when r = 60°, compared with r = 5°, with the decrease of r, the bonding strength between the battery cell and the structural beam is smaller, which can basically meet the bonding strength demand between them, and the support strength of the structural beam is larger. In order to balance the support strength of the structural beam and the bonding strength between the battery cell and the structural beam, the value range of r is set to be between 5° and 60°.

[0017] In some embodiments, the size of the first end in the first direction is W1, the size of the second end in the first direction is W2, and 1mm≤W1-W2≤30mm.

[0018] With the increase of the size of W1-W2, the size of the structural beam in the first direction X becomes smaller, so that the support strength of the structural beam decreases, the thickness of the adhesive layer increases, and the bonding strength increases. When W1-W2 = 1mm, compared with W1-W2 = 30mm, the bonding strength between the battery cell and the structural beam is smaller, which can basically meet the bonding strength demand between them, and the support strength of the structural beam is larger; when W1-W2 = 30mm, compared with W1-W2 = 1mm, the bonding strength between the structural beam and the battery cell is larger, and the strength of the structural beam is smaller, which can basically meet the support demand. Therefore, in order to balance the support strength of the structural beam and the bonding strength between the battery cell and the structural beam, the value range of W1-W2 is set to be between 1mm and 30mm.

[0019] In some embodiments, an exhaust passage is formed in the structural beam, the exhaust passage extends along the length direction of the structural beam and penetrates at least one end of the structural beam, the surface of the structural beam facing the battery cell is provided with a pressure relief port, the pressure relief port communicates with the exhaust passage, the side of the battery cell facing the structural beam is provided with a pressure relief mechanism, the pressure relief mechanism is arranged opposite to the pressure relief port, and the pressure relief mechanism is configured to release the internal pressure or temperature of the battery cell when the internal pressure or temperature of the battery cell reaches a threshold value.

[0020] When the battery cell occurs thermal runaway, the pressure relief mechanism is opened, and the gas generated in the battery cell can be discharged from the pressure relief hole through the exhaust passage, so that the pressure inside the battery is reduced, thereby reducing the probability of explosion of the battery, and improving the safety of the battery.

[0021] In some embodiments, the structural beam is provided with battery cells on both sides along the first direction, and a gap is formed between the battery cells on any side and the structural beam, the number of exhaust channels is two, and the two exhaust channels are arranged at intervals along the first direction. Thus, when the battery cells on both sides of the structural beam are in thermal runaway, the exhaust channels and the pressure relief port can simultaneously discharge the gas generated by the battery cells on both sides of the structural beam, thereby relieving the pressure of the battery cells, reducing the probability of explosion of the battery, and improving the safety of the battery.

[0022] In some embodiments, the structural beam comprises:

[0023] a beam body;

[0024] a plate body provided on the side of the beam body facing the battery cells and connected with the beam body, the plate body and the beam body jointly enclosing the exhaust channel, the plate body being provided with a pressure relief port, and a gap being formed between the plate body and the battery cells.

[0025] The plate body and the beam body can be manufactured separately, the pressure relief port of the plate body is manufactured first, and then the plate body and the beam body are connected, so as to facilitate the manufacture of the pressure relief port and the exhaust channel.

[0026] In some embodiments, the beam body is provided with a communication hole, the beam body is provided with a plate body on both sides along the first direction, and the two plate bodies jointly enclose the exhaust channel with the beam body on both sides along the first direction, and the exhaust channels on both sides of the beam body along the first direction are communicated through the communication hole.

[0027] When the battery cells on one side of the structural beam are in thermal runaway, the communication hole is provided, the gas can be discharged from the two exhaust channels, the path of gas discharge is increased, the gas in thermal runaway inside the battery cells can be quickly released, thereby reducing the probability of explosion of the battery.

[0028] In some embodiments, the communication hole is arranged in a staggered manner with the pressure relief port. When the battery cells on both sides of the structural beam are in thermal runaway, the pressure relief mechanism is opened, and the communication hole is arranged in a staggered manner with the pressure relief port, which can reduce the amount of high-temperature gas of the two opposite battery cells colliding with each other, thereby reducing the influence of the two battery cells on each other in thermal runaway, and improving the safety of the battery.

[0029] In some embodiments, the entire projection of the pressure relief port on the beam body along the first direction is located outside the communication hole. Thus, the communication hole and the pressure relief port can be completely staggered, and when the battery cells on both sides of the structural beam are in thermal runaway, the amount of high-temperature gas of the two opposite battery cells colliding with each other is further reduced, thereby reducing the influence of the two battery cells on each other in thermal runaway, and improving the safety of the battery.

[0030] In some embodiments, the structural beam comprises:

[0031] a plate body, the plate body being a heat exchange plate;

[0032] The beam body is connected with a plate body on the side facing the battery monomer, a gap is formed between the plate body and the surface of the battery monomer facing each other, and the glue layer in the gap is a heat-conducting glue layer.

[0033] Therefore, by passing the heat exchange medium into the flow channel of the heat exchange plate, the temperature of the battery monomer can be adjusted to enable the battery to work in a suitable temperature range, so that the battery can exert better performance, and the probability of thermal runaway of the battery can be reduced, thereby improving the safety of the battery.

[0034] In some embodiments, the number of battery monomers on either side of the structural beam along the first direction is a plurality, the battery monomers are arranged along the length direction of the structural beam, and the plurality of battery monomers are respectively bonded to the structural beam by the glue layer. Therefore, the structural beam can be bonded to the plurality of battery monomers through the glue layer, and the size of the end of the structural beam and each battery monomer away from each other can be reduced, thereby improving the space utilization.

[0035] In a second aspect, the application provides a power consumption device comprising the battery of the first aspect, and the battery is used to provide electric energy for the power consumption device.

[0036] Since the power consumption device comprises all the technical features of the battery of the first aspect, the effects are the same as described above, and will not be repeated here.

[0037] In a third aspect, the application provides a vehicle comprising the battery of the first aspect, and the top of the battery is the bottom plate of the vehicle.

[0038] Since the third aspect comprises all the technical features of the battery of the first aspect, the effects are the same as described above, and will not be repeated here.

[0039] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0040] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered limiting the application. Moreover, in all the drawings, the same reference numerals are used to represent the same parts. In the drawings:

[0041] FIG. 1 is a schematic view of a power consumption device, which is a vehicle, according to an embodiment of the application;

[0042] FIG. 2 is an exploded structural schematic view of a battery according to an embodiment of the application;

[0043] Fig. 3 is an exploded structural schematic diagram of a battery cell according to an embodiment of the present application;

[0044] Fig. 4 is an isometric view of a battery cell connected to a structural beam according to an embodiment of the present application;

[0045] Fig. 5 is a side view of a battery cell connected to a structural beam according to an embodiment of the present application;

[0046] Fig. 6 is an isometric view of a structural beam according to an embodiment of the present application;

[0047] Fig. 7 is an exploded structural schematic diagram of a structural beam according to an embodiment of the present application;

[0048] Fig. 8 is a side view of a structural beam according to an embodiment of the present application;

[0049] Fig. 9 is a side view of a structural beam according to another embodiment of the present application;

[0050] Fig. 10 is a side view of a structural beam according to another embodiment of the present application;

[0051] Fig. 11 is a side view of a structural beam according to another embodiment of the present application.

[0052] Reference signs in the detailed description of the embodiments are as follows:

[0053] 1000, vehicle; 100, battery; 10, box body; 11, lower box body; 12, upper cover; 20, battery cell; 21, shell; 211, end cap assembly; 2111, electrode terminal; 212, housing; 22, electrode assembly; 2112, pressure relief mechanism; 30, structural beam; 31, plate body; 311, pressure relief port; 312, first plane; 313, longitudinal section; 32, beam body; 321, communication hole; 33, exhaust passage; 34, first end; 35, second end; 40, adhesive layer; X, first direction; Y, second direction; Z, length direction;

[0054] 200, controller;

[0055] 300, motor. DETAILED DESCRIPTION

[0056] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a use of the plural and vice versa.

[0058] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0059] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The occurrence of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily referring to a separate or alternative embodiment, to the exclusion of other embodiments. It is explicitly and implicitly understood that the embodiments described herein are capable of combination.

[0060] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0061] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0062] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0064] In the production process of the battery, glue injection needs to be performed between the battery monomer and the beam. In order to facilitate the glue injection nozzle to inject glue between the battery monomer and the beam, the beam and the battery monomer need to be moved away from each other in a direction, so that the beam and the battery monomer have a reserved glue injection space (if there is no glue injection space, the beam and the battery monomer are attached, and the glue cannot enter between the beam and the battery monomer, and the beam and the battery monomer need to be pulled apart by a certain distance), so as to facilitate the glue injection to bond the beam and the battery monomer together, which causes the beam and the battery monomer to occupy a larger space in a limited space, reduces the space utilization, and causes the energy density of the battery to be lower.

[0065] Therefore, the present application provides a battery, the edge of the first end of the structural beam abuts against the structural beam, and glue can be injected into the gap between the structural beam and the battery monomer without pulling the structural beam and the battery monomer apart by a certain distance, so that a glue layer is formed in the gap and the structural beam and the battery monomer are bonded, so as to reduce the occupied space of the battery monomer and the structural beam, thereby improving the space utilization inside the battery in a limited space, and further improving the volume energy density of the battery.

[0066] The embodiment of the present application provides a kind of electric device, including battery, battery is used to provide electric energy to electric device.Electric device can be but not limited to mobile phone, tablet, notebook computer, electric toy, electric tool, electric car, electric car, ship, spacecraft and so on.Electric toy can include fixed or mobile electric toy, for example, game machine, electric car toy, electric ship toy and electric aircraft toy and so on, spacecraft can include airplane, rocket, space shuttle and spaceship and so on.

[0067] The following embodiments are described for convenience, taking a vehicle 1000 as an example for convenience.

[0068] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 1000 as an example of an electrical device according to some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle, etc. The vehicle 1000 is internally provided with a battery 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery 100 can be used for power supply of the vehicle 1000, for example, the battery 100 can be used as an operating power source of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0069] In some embodiments of the present application, the battery 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0070] Please refer to FIG. 2, which is an exploded structural schematic diagram of the battery 100 according to some embodiments of the present application. The battery 100 includes a box body 10 and at least one battery cell 20, and the battery cell 20 is accommodated in the box body 10. The box body 10 is used to provide an accommodation space for the battery cell 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a lower box body 11 and an upper cover 12, and the lower box body 11 and the upper cover 12 are mutually covered to jointly define an accommodation space for accommodating the battery cell 20. The upper cover 12 can be a hollow structure with an entrance at one end, and the lower box body 11 can be a plate-shaped structure, which is covered on the entrance side of the upper cover 12 to jointly define the accommodation space with the upper cover 12. Alternatively, the lower box body 11 and the upper cover 12 can both be hollow structures with an entrance at one side, and the entrance side of the lower box body 11 is covered on the entrance side of the upper cover 12. Of course, the box body 10 formed by the lower box body 11 and the upper cover 12 can have various shapes, such as T-shaped, cuboid, etc.

[0071] In the battery 100, the battery cell 20 can be multiple, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection, where the mixed connection means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole of the multiple battery cells 20 is accommodated in the lower box body 11. Alternatively, the battery 100 can be in the form of a battery module, in which the multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the lower box body 11.

[0072] Each battery cell 20 can be a secondary battery or a primary battery, and can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0073] Referring to FIG. 3 and FIG. 4, FIG. 3 is an exploded structural schematic diagram of the battery cell 20 according to some embodiments of the present application. FIG. 4 is an axonometric view of the battery cell 20. The battery cell 20 refers to the smallest unit that constitutes the battery 100. As shown in FIG. 5, the battery cell 20 includes a housing 21 and an electrode assembly 22. The housing 21 includes an end cap assembly 211 and a shell 212, and the shell 212 has an opening formed at one end thereof, and the end cap assembly 211 is arranged on the opening and connected with the shell 212.

[0074] The end cap assembly 211 includes an end cap, which refers to a component that covers the opening of the shell 212 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap can be adapted to the shape of the shell 212 to facilitate cooperation with the shell 212. Alternatively, the end cap can be made of a material with certain hardness and strength, such as aluminum alloy, so that the end cap is not easily deformed when subjected to extrusion and impact, so that the battery cell 20 can have higher structural strength and safety performance can also be improved. The end cap can be provided with functional components such as an electrode terminal 2111. The electrode terminal 2111 can be used to electrically connect with the electrode assembly 22 for outputting or inputting the electrical energy of the battery cell 20. In some embodiments, the end cap can also be provided with a pressure relief mechanism 2112 for relieving the internal pressure of the battery cell 20 when the internal pressure or temperature reaches a threshold value. The material of the end cap can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon. In some embodiments, an insulating member can also be arranged on the inner side of the end cap, which can be used to isolate the electrical connection components in the shell 212 from the end cap to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, etc.

[0075] The shell 212 is a component for fitting the end cover to form an internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte and other components. The shell 212 and the end cover can be independent components, and an opening can be provided on the shell 212, and the end cover assembly 211 is used to cover the opening to form the internal environment of the battery cell 20. Without limitation, the end cover and the shell 212 can also be integrated, specifically, the end cover and the shell 212 can form a common connecting surface before other components enter the shell, and when it is necessary to seal the internal environment of the shell 212, the end cover is used to cover the shell 212. The shell 212 can be various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the shell 212 can be determined according to the specific shape and size of the electrode assembly 22. The material of the shell 212 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations.

[0076] The electrode assembly 22 is a component where electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 22 can be contained in the shell 212. The electrode assembly 22 is mainly formed by winding or stacking the positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The positive and negative electrode sheets have a portion of active material constituting the main body of the electrode assembly, and a portion of the positive and negative electrode sheets without active material each constitutes a tab. The positive and negative tabs can be located together at one end of the main body or at two ends of the main body, respectively. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0077] The following embodiments will be described with reference to FIGS. 2-11, taking a battery 100 according to some embodiments of the present application as an example for convenience of description.

[0078] Referring to FIGS. 2-6, the battery 100 includes a box body 10, a battery cell 20 and at least one structural beam 30. The box body 10 has an accommodation space formed inside. The battery cell and the at least one structural beam 30 are located in the accommodation space and connected with the box body 10, respectively. The structural beam 30 is provided with the battery cell 20 along at least one side of the first direction X, and a gap is formed between the structural beam 30 and the battery cell 20, which is filled with a glue layer 40, and the structural beam 30 is bonded to the battery cell 20 through the glue layer 40. The structural beam 30 includes a first end 34 and a second end 35 at two ends along a second direction Y, the second direction Y is perpendicular to the length direction Z of the structural beam 30, and the second direction Y and the length direction Z of the structural beam 30 respectively intersect with the first direction X. The first end 34 abuts against the edge of the battery cell 20, and a gap is provided between the second end 35 and the edge of the battery cell 20.

[0079] The battery cell 20 can be arranged on only one side of the structural beam 30 along the first direction X, or can be arranged on both sides of the structural beam 30 along the first direction X.

[0080] For example, the number of structural beams 30 is three or more, and each of the two outermost structural beams 30 is arranged with the battery cell 20 on only one side along the first direction X, and each of the remaining structural beams 30 is arranged with the battery cell 20 on both sides along the first direction X.

[0081] The gap refers to the distance between the surfaces of the battery cell 20 and the structural beam 30 facing each other along the first direction X, but does not include the part where the first end 34 abuts against the battery cell 20.

[0082] Optionally, the electrode terminal of the battery cell 20 is arranged on the side of the battery cell 20 facing away from the structural beam 30. The electrode terminal 2111 can also be arranged on the top of the battery cell 20, which can be arranged according to actual needs.

[0083] The connection between the structural beam 30 and the box body 10 includes but is not limited to welding, riveting, or bolt connection, etc.

[0084] The adhesion between the structural beam 30 and the battery cell 20 through the adhesive layer 40 refers to the adhesion between the battery cell 20 and the structural beam 30 by the adhesive force of the adhesive layer 40 itself.

[0085] Optionally, the number of battery cells 20 on the same side of the structural beam 30 along the first direction X can be one or more.

[0086] The gap increases along the direction from the first end 34 to the second end 35, and injecting glue into the gap can form the adhesive layer 40 in the gap, without moving the structural beam 30 and the battery cell 20 away from each other to have a reserved glue injection space, so as to realize glue injection, thereby reducing the size of the end of the structural beam 30 and the battery cell 20 away from each other, reducing the occupied space of the battery cell 20 and the structural beam 30, thereby improving the space utilization of the box body 10, so as to improve the volumetric energy density of the battery 100; at the same time, the glue injection nozzle is convenient to fill the adhesive layer 40 in the gap, so as to facilitate the adhesion between the structural beam 30 and the battery cell 20, and the structural beam 30 plays a role in fixing the battery cell 20 and strengthening the strength of the box body 10.

[0087] In some embodiments, the gap has an increasing trend along the direction from the first end 34 to the second end 35.

[0088] The gap having an increasing trend means that the distance between the surface of the battery cell 20 facing the structural beam 30 and the surface of the structural beam 30 facing the battery cell 20 gradually increases along the direction from the first end 34 to the second end 35.

[0089] Exemplarily, the surface of the battery cell 20 facing the structural beam 30 and the surface of the first end 34 are respectively planes, the surface of the structural beam 30 facing the battery cell 20 is perpendicular to the surface of the first end 34, and the included angle between the surface of the battery cell 20 facing the structural beam 30 and the surface of the first end 34 is greater than 90 degrees and less than 180 degrees.

[0090] Exemplarily, the surface of the battery cell 20 facing the structural beam 30 is a curved surface, and any cross section of the curved surface is a concave curve or a convex surface, and the cross section is perpendicular to the length direction Z of the structural beam 30.

[0091] In this way, the area of the adhesive surface during the glue injection process can be increased, so that the battery cell 20 and the structural beam 30 can be more firmly connected together, and the glue injection operation is facilitated.

[0092] In some embodiments, referring to FIGS. 8-11, along the direction from the first end 34 to the second end 35, the size of the structural beam 30 along the first direction X has a decreasing trend.

[0093] In this way, compared with the structure in which the size of the structural beam 30 along the first direction X remains unchanged along the direction from the first end 34 to the second end 35, the contact area between the structural beam 30 and the glue layer 40 can be increased, so as to improve the connection reliability between the structural beam 30 and the battery cell 20; meanwhile, the gap between the structural beam 30 and the battery cell 20 along the direction from the first end 34 to the second end 35 has an increasing trend, so as to facilitate the filling of the glue layer 40.

[0094] In some embodiments, referring to FIGS. 8-11, the surface of the structural beam 30 facing the battery cell 20 is a curved surface, and any cross section of the curved surface is a concave curve or a convex surface, and the cross section is perpendicular to the length direction of the structural beam 30; or the surface of the structural beam 30 facing the battery cell 20 is a plane.

[0095] The size of the structural beam 30 along the first direction X is K, that is, K has an increasing trend along the direction from the first end 34 to the second end 35.

[0096] Optionally, the surfaces on both sides of the structural beam 30 along the first direction X respectively include any one of a convex surface, a concave surface or a plane.

[0097] FIG. 8 schematically shows a structure in which the surfaces of the two sides of the structural beam 30 along the first direction X are both planar. FIG. 9 schematically shows a structure in which the surfaces of the two sides of the structural beam 30 along the first direction X are both concave curved surfaces. FIG. 10 schematically shows a structure in which the surfaces of the two sides of the structural beam 30 along the first direction X are both convex curved surfaces. FIG. 11 schematically shows a structure in which the sizes of the two ends of the beam body 32 of the structural beam 30 along the second direction Y are equal, the thickness of the plate body 31 of the structural beam 30 along the direction from the first end 34 to the second end 35 decreases in a decreasing trend, and the outer surfaces of the two plate bodies 31 along the first direction X also decrease in a decreasing trend. In other examples, the surfaces of the two sides of the structural beam 30 along the first direction X can not be the same. For example, the surface of one side of the structural beam 30 along the first direction X is planar, and the surface of the other side is convex. The planar surface can be replaced by any one of the above-mentioned convex curved surface or concave curved surface, and the convex curved surface of the other side can also be replaced by any one of the planar surface or concave curved surface. In the above-mentioned examples, the concave curved surface or convex curved surface extends along the length direction Z of the structural beam 30.

[0098] Therefore, the size of the structural beam 30 along the first direction X decreases in a decreasing trend along the direction from the first end 34 to the second end 35, so that the gap between the structural beam 30 and the battery cell 20 increases in an increasing trend. Compared with the structure in which the size of the structural beam 30 along the first direction X remains unchanged along the direction from the first end 34 to the second end 35, the contact area between the structural beam 30 and the adhesive layer 40 can be increased, so as to improve the reliability of the connection between the structural beam 30 and the battery cell 20.

[0099] In some embodiments, referring to FIG. 8, the surface of one side of the structural beam 30 facing the battery cell 20 is a first planar surface 312, and the included angle r between the longitudinal section 313 of the structural beam 30 perpendicular to the second direction Y and the first planar surface 312 is 5°≤r≤60°.

[0100] Under the premise that the size of the first end 34 along the first direction X remains unchanged, as r increases, the size of the structural beam 30 along the first direction X increases, and the gap decreases, so that the support strength of the structural beam 30 increases, and the thickness of the adhesive layer decreases, and the adhesion strength decreases. When r=5°, compared with r=60°, the adhesion strength between the structural beam 30 and the battery cell 20 is greater, and the strength of the structural beam 30 is smaller, which can basically meet the support requirements. When r=60°, compared with r=5°, as r decreases, the adhesion strength between the battery cell 20 and the structural beam 30 is smaller, which can basically meet the adhesion strength requirements between the two, and the support strength of the structural beam 30 is greater. In order to balance the support strength of the structural beam 30 and the adhesion strength between the battery cell 20 and the structural beam 30, the value range of r is set to be 5°-60°.

[0101] In some embodiments, referring to FIG. 8, the first end 34 has a dimension W1 along the first direction X, and the second end 35 has a dimension W2 along the first direction X, 1mm≤W1-W2≤30mm.

[0102] With the increase of the dimension of W1-W2, the dimension of the structural beam 30 along the first direction X decreases, and the support strength of the structural beam 30 decreases, the thickness of the adhesive layer increases, and the bonding strength increases, under the condition that the dimension of the first end 34 along the first direction X is unchanged. When W1-W2=1mm, compared with W1-W2=30mm, the bonding strength between the battery monomer 20 and the structural beam 30 is smaller, which can basically meet the bonding strength requirement between the two, and the support strength of the structural beam 30 is larger; when W1-W2=30mm, compared with W1-W2=1mm, the bonding strength between the structural beam 30 and the battery monomer 20 is larger, and the strength of the structural beam 30 is smaller, which can basically meet the support requirement. Therefore, in order to balance the support strength of the structural beam and the bonding strength between the battery monomer and the structural beam, the value range of W1-W2 is set to 1mm-30mm.

[0103] In some embodiments, referring to FIG. 5 and FIG. 6, the structural beam 30 is internally formed with an exhaust passage 33 extending along the length direction Z of the structural beam 30 and penetrating through at least one end of the structural beam 30, the surface of the structural beam 30 facing the battery monomer 20 is provided with a pressure relief port 311, the pressure relief port 311 is in communication with the exhaust passage 33, the side of the battery monomer 20 facing the structural beam 30 is provided with a pressure relief mechanism 2112, the pressure relief mechanism 2112 is arranged opposite to the pressure relief port 311, and the pressure relief mechanism 2112 is configured to release the internal pressure or temperature of the battery monomer 20 when the internal pressure or temperature of the battery monomer 20 reaches a threshold value.

[0104] The pressure relief mechanism 2112 can be an explosion-proof valve, and the pressure relief mechanism 2112 can also be a weak area formed by an annular notch arranged on the surface of one side of the shell 212 of the battery monomer 20, the weak area constitutes the pressure relief mechanism 2112, and when the pressure in the shell 212 reaches a set value, the weak area is damaged under the influence of the pressure, causing the pressure relief mechanism 2112 to open.

[0105] Optionally, the exhaust passage penetrates through both ends of the structural beam 30 along the length direction Z of the structural beam 30.

[0106] The pressure relief mechanism 2112 is arranged opposite to the pressure relief port 311, which means that the projection of the pressure relief mechanism 2112 on the surface of the structural beam 30 along the first direction X is completely located in the pressure relief port 311, or at least partially projected in the pressure relief port 311.

[0107] When the battery cell 20 is in thermal runaway, the pressure relief mechanism 2112 is opened, and the gas generated in the battery cell 20 can be discharged from the pressure relief hole through the exhaust channel 33, so that the pressure inside the battery 100 is reduced, thereby reducing the probability of explosion of the battery 100, and improving the safety of the battery 100.

[0108] In some embodiments, referring to FIG. 6, the structural beam 30 is provided with battery cells 20 on both sides along the first direction X, and a gap is formed between the battery cells 20 on any side and the structural beam 30. The number of exhaust channels 33 is two, and the two exhaust channels 33 are spaced apart along the first direction X.

[0109] The two exhaust channels 33 can be connected to each other or not connected to each other.

[0110] Therefore, when the battery cells 20 on both sides of the structural beam 30 are in thermal runaway, the exhaust channels 33 and the pressure relief hole 311 can simultaneously discharge the gas generated by the battery cells 20 on both sides of the structural beam 30, thereby improving the safety of the battery 100.

[0111] In some embodiments, referring to FIG. 6, the structural beam 30 includes a plate body 31 and a beam body 32. The plate body 31 is arranged on the side of the beam body 32 facing the battery cell 20 and connected to the beam body 32. The plate body 31 and the beam body 32 jointly enclose the exhaust channel 33. The plate body 31 is provided with a pressure relief hole 311, and a gap is formed between the plate body 31 and the battery cell 20.

[0112] The beam body 32 can completely separate the two exhaust channels 33, or a communication hole 321 can be arranged on the beam body 32 to connect the two exhaust channels 33.

[0113] The connection between the plate body 31 and the beam body 32 includes but is not limited to welding, bonding, screw connection, clamping, or one-piece forming.

[0114] The plate body 31 and the beam body 32 can be manufactured separately. The pressure relief hole 311 of the plate body 31 is manufactured first, and then the plate body 31 and the beam body 32 are connected, so as to facilitate the manufacture of the pressure relief hole 311 and the exhaust channel 33.

[0115] In some embodiments, referring to FIG. 7, the beam body 32 is provided with a communication hole 321, and the beam body 32 is provided with a plate body 31 on both sides along the first direction X. The two plate bodies 31 jointly enclose the exhaust channel 33 with the beam body 32 on both sides along the first direction X, and the exhaust channels 33 on both sides of the beam body 32 along the first direction X are connected through the communication hole 321.

[0116] The number of communication holes 321 can be one or more, and the communication holes 321 penetrate the beam body 32 along the first direction X.

[0117] When the battery monomer 20 on one side of the structural beam 30 is in thermal runaway, the arrangement of the communication hole 321 can make the gas discharged from the two exhaust channels 33, increase the path of gas discharge, and enable the thermal runaway gas inside the battery monomer 20 to be quickly released, thereby reducing the probability of explosion of the battery 100.

[0118] In some embodiments, the communication hole 321 is arranged in a staggered manner with the pressure relief port 311.

[0119] The staggered arrangement of the communication hole 321 and the pressure relief port 311 can be partially staggered or completely staggered, that is, the projection of the pressure relief port 311 along the first direction X on the beam body 32 can intersect the contour line of the communication hole 321, or the projection can be entirely located outside the communication hole 321.

[0120] When the battery monomers 20 on both sides of the structural beam 30 are in thermal runaway, the pressure relief mechanism 2112 is opened, and the staggered arrangement of the communication hole 321 and the pressure relief port 311 can reduce the amount of high-temperature gas collision between the two opposite battery monomers 20, thereby reducing the influence of the two battery monomers 20 on each other when in thermal runaway, and improving the safety of the battery 100.

[0121] In some embodiments, the entire projection of the pressure relief port 311 along the first direction X on the beam body 32 is located outside the communication hole 321.

[0122] In this way, the communication hole 321 and the pressure relief port 311 can be completely staggered, and when the battery monomers 20 on both sides of the structural beam 30 are in thermal runaway, the amount of high-temperature gas collision between the two opposite battery monomers 20 is further reduced, thereby reducing the influence of the two battery monomers 20 on each other when in thermal runaway, and improving the safety of the battery 100.

[0123] In some embodiments, referring to FIG. 6, the structural beam 30 includes a plate body 31 and a beam body 32. The plate body 31 is a heat exchange plate. The beam body 32 is connected with the plate body 31 on both sides along the first direction X, and a gap is formed between the surfaces of the plate body 31 and the battery monomer 20 facing each other. The adhesive layer 40 in the gap is a heat-conducting adhesive layer.

[0124] Optionally, the heat exchange channel inside the heat exchange plate can pass through a heat exchange medium such as water, oil or gas. The heat exchange medium is circulated to regulate the temperature of the battery monomer 20, that is, the heat exchange medium is introduced into the inlet of the heat exchange plate and flows out from the outlet of the heat exchange plate, and then circulates through the external pipeline and flows back to the inlet of the heat exchange plate and enters the heat exchange channel inside the heat exchange plate.

[0125] Optionally, the connection between the plate body 31 and the beam body 32 can be welding or bonding, but is not limited thereto, which facilitates the manufacturing of the heat exchange plate.

[0126] Therefore, by passing the heat exchange medium into the flow channel of the heat exchange plate, the temperature of the battery monomer 20 can be adjusted to enable the battery 100 to work in a suitable temperature range, so that the battery 100 can exert better performance, and the probability of thermal runaway of the battery 100 can be reduced, and the safety of the battery 100 is improved. In other examples, the interior of the plate body 31 can also not be provided with a heat exchange channel, and whether to use a plate with a heat exchange channel is selected according to the number, capacity, use occasion, and environment temperature of the battery monomer 20.

[0127] In some embodiments, the number of battery monomers 20 on either side of the structural beam 30 along the first direction X is multiple, the battery monomers 20 are arranged along the length direction Z of the structural beam 30, and the multiple battery monomers 20 are respectively bonded to the structural beam 30 through the adhesive layer 40.

[0128] Therefore, the structural beam 30 can be bonded to the multiple battery monomers 20 through the adhesive layer 40, the size of the end of the structural beam 30 and each battery monomer 20 away from each other can be reduced, and thus the space utilization rate is improved.

[0129] In some embodiments, referring to FIG. 4, the battery monomers 20 on the same side of the structural beam 30 along the first direction X are multiple groups, and the multiple groups of battery monomers 20 are stacked along the second direction Y.

[0130] In the example, the battery monomers 20 on the same side of the structural beam 30 of the same battery monomer 20 are two groups, and the multiple groups of battery monomers 20 are arranged at intervals along the first direction X.

[0131] Therefore, the structural beam 30 can be bonded to the multiple groups of battery monomers 20 through the adhesive layer 40, the size of the end of the structural beam 30 and each group of battery monomers 20 away from each other can be reduced, and thus the space utilization rate is improved.

[0132] In some embodiments, referring to FIG. 2, the battery 100 further includes a box body 10, and at least one battery monomer 20 is arranged in the box body 10. By arranging the box body 10, the at least one battery monomer 20 can be accommodated in the box body 10, so as to integrate multiple battery monomers 20 together, thereby improving the capacity of the battery 100.

[0133] The following embodiments are described by taking a vehicle 1000 as an example for convenience of description.

[0134] The vehicle 1000 includes the battery 100 of the above-described embodiments, and the top of the battery 100 is the floor of the vehicle 1000.

[0135] The vehicle 1000 can be, but is not limited to, a sedan, a passenger car, an off-road vehicle, a van, a truck, etc.

[0136] Since the vehicle 1000 includes all the technical features of the battery 100 of the above-described embodiments, the effects are the same as described above, and thus a detailed description thereof will not be repeated here.

[0137] In an optional embodiment of the battery 100, referring to FIGS. 2-8, the battery 100 comprises a box 10, battery cells 20 and at least one structural beam 30. The box 10 has an accommodating space formed inside. The battery cells and the at least one structural beam 30 are located in the accommodating space and connected with the box 10 respectively. The structural beam 30 is provided with the battery cells 20 on both sides along the first direction X. A gap is formed between the surfaces of the structural beam 30 and the battery cells 20 facing each other. The gap is filled with a glue layer 40. The structural beam 30 is bonded with the battery cells 20 through the glue layer 40. The structural beam 30 comprises a first end 34 and a second end 35 at both ends along a second direction Y. The second direction Y is perpendicular to the length direction Z of the structural beam 30. The second direction Y and the length direction Z of the structural beam 30 respectively intersect with the first direction X. The first end 34 abuts against different battery cells 20 on both side edges along the first direction X respectively. In the direction from the first end 34 to the second end 35, the gap shows an increasing trend. In the direction from the first end 34 to the second end 35, the size of the structural beam 30 along the first direction X shows a decreasing trend. A gap is provided between the edge of the second end 35 facing the battery cells 20 and the battery cells 20. The surface of the structural beam 30 facing the battery cells 20 is a first plane 312. The angle between the longitudinal section 313 of the structural beam 30 and the first plane 312 is r. The longitudinal section 313 is perpendicular to the second direction Y. 5°≤r≤60°. The size of the first end 34 along the first direction X is W1. The size of the second end 35 along the first direction X is W2. 1mm≤W1-W2≤30mm. The structural beam 30 comprises a plate body 31 and a beam body 32. The plate body 31 is provided with a pressure relief port 311. The plate body 31 is a heat exchange plate. The beam body 32 is connected with the plate body 31 on both sides along the first direction X. A gap is formed between the surfaces of the plate body 31 and the battery cells 20 facing each other. The plate bodies 31 on both sides of the beam body 32 jointly enclose two exhaust channels 33 with the beam body 32. The two exhaust channels 33 are arranged in a spaced manner along the first direction X. The beam body 32 is provided with a communication hole 321. The two exhaust channels 33 are communicated through the communication hole 321. The projection of the pressure relief port 311 on the beam body 32 along the first direction X is located outside the communication hole 321. In the length direction Z of the structural beam 30, the exhaust channel 33 penetrates through both ends of the structural beam 30. The surface of the structural beam 30 facing the battery cells 20 is provided with the pressure relief port 311. The pressure relief port 311 is communicated with the exhaust channel 33. The side of the battery cell 20 facing the structural beam 30 is provided with a pressure relief mechanism 2112. The pressure relief mechanism 2112 is arranged opposite to the pressure relief port 311. The pressure relief mechanism 2112 is configured to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The number of the battery cells 20 on the same side of the structural beam 30 is multiple. The battery cells 20 are arranged in a group in the length direction Z of the structural beam 30. Each battery cell 20 is bonded with the structural beam 30 through the glue layer 40. The glue layer 40 is a heat conductive glue layer.The battery monomers 20 on the same side of the structural beam 30 along the first direction X are in multiple groups, and the multiple groups of battery monomers 20 are stacked along the second direction Y.

[0138] The gap has an increasing trend along the direction from the first end 34 to the second end 35, and injecting glue into the gap can form a glue layer 40 in the gap, without reserving space between the first end 34 of the structural beam 30 and the battery monomer 20, so as to realize glue injection, thereby reducing the size of the end of the structural beam 30 and the battery monomer 20 away from each other, to reduce the occupied space of the battery monomer 20 and the structural beam 30, thereby improving the space utilization, so as to improve the volumetric energy density of the battery 100, and at the same time, it is convenient to fill the glue layer 40 in the gap, to facilitate the bonding between the structural beam 30 and the battery monomer 20. At the same time, the pressure relief port 311 of the structural beam 30 and the exhaust channel 33 are communicated, and when the battery 100 is in thermal runaway, the thermal runaway gas can be guided out, so as to reduce the probability of explosion of the battery 100, thereby improving the safety of the battery 100, and the plate body 31 of the structural beam 30 also plays a role in temperature regulation, so that the battery 100 can work in a suitable temperature range, to fully exert the performance of the battery 100, and improve the safety of the battery 100. In order to consider the support strength of the structural beam and the bonding strength between the battery monomer and the structural beam, the value range of r is set to 5°-60°, and the value range of W1-W2 is set to 1mm-30mm.

[0139] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, wherein, The application relates to a battery pack, comprising: a box body, an accommodating space being formed in the box body; at least one structural beam, located in the accommodating space and connected with the box body; a battery cell, located in the accommodating space, the structural beam being provided with the battery cell on at least one side in a first direction, a gap being formed between the structural beam and the battery cell, the gap being filled with a glue layer, the structural beam being bonded with the battery cell through the glue layer, the structural beam comprising a first end and a second end at two ends of the structural beam in a second direction, the second direction being perpendicular to the length direction of the structural beam, the second direction and the length direction of the structural beam intersecting with the first direction respectively, the first end abutting against the edge of the side of the battery cell, and the second end being provided with the gap between the edge of the side of the battery cell and the battery cell.

2. The battery of claim 1, wherein, In the direction from the first end to the second end, the size of the gap shows an increasing trend.

3. The battery of claim 2, wherein, In the direction from the first end to the second end, the size of the structural beam in the first direction shows a decreasing trend.

4. The battery of claim 3, wherein, The surface of the structural beam towards the battery cell is a curved surface, any cross section of the curved surface is a concave curve or a convex surface, and the cross section is perpendicular to the length direction of the structural beam; or the surface of the structural beam towards the battery cell is a plane.

5. The battery of claim 3 or 4, wherein, The surface of the side of the structural beam towards the battery cell is a first plane, and the included angle between the first plane and the longitudinal section of the structural beam perpendicular to the second direction is r, wherein 5 DEG <= r <= 60 DEG.

6. The battery of any one of claims 3-5, wherein, The size of the first end in the first direction is W1, the size of the second end in the first direction is W2, and 1 mm <= W1-W2 <= 30 mm.

7. The battery of any one of claims 1-6, wherein, The inside of the structural beam is formed with an exhaust channel, the exhaust channel extends along the length direction of the structural beam and penetrates through at least one end of the structural beam, the surface of the structural beam towards the battery cell is provided with a pressure relief port, the pressure relief port communicates with the exhaust channel, the side of the battery cell towards the structural beam is provided with a pressure relief mechanism, the pressure relief mechanism is arranged opposite to the pressure relief port, and the pressure relief mechanism is configured to release the internal pressure or temperature of the battery cell when the internal pressure or temperature of the battery cell reaches a threshold value.

8. The battery of claim 7, wherein, The structural beam is provided with the battery cell on both sides in the first direction, and the gap is formed between the battery cell on any side and the structural beam, and the number of the exhaust channels is two, and the two exhaust channels are arranged at intervals in the first direction.

9. The battery of claim 7 or 8, wherein, The structural beam comprises: a beam body; a plate body, the plate body being arranged on the side of the beam body towards the battery cell and being connected with the beam body, the plate body and the beam body jointly enclosing the exhaust channel, the plate body being provided with the pressure relief port, and the gap being formed between the plate body and the battery cell.

10. The battery of claim 9, wherein, The beam body is provided with a communication hole, two sides of the beam body along the first direction are respectively provided with the plate body, and the two plate bodies and the beam body are combined to form the exhaust passage, and the exhaust passages on both sides of the beam body along the first direction are communicated through the communication hole.

11. The battery of claim 10, wherein, The communication hole is arranged in a staggered manner with the pressure relief port.

12. The battery of claim 11, wherein, The projection of the beam body along the first direction is located outside the communication hole.

13. The battery of any one of claims 1-12, wherein, The structural beam comprises: a plate body, which is a heat exchange plate; a beam body, one side of the beam body facing the battery monomer is connected with the plate body, the plate body and the battery monomer form the gap, and the glue layer in the gap is a heat-conducting glue layer.

14. The battery of any one of claims 1-12, wherein, The number of the battery monomers on either side of the structural beam along the first direction is multiple, multiple battery monomers are arranged along the length direction of the structural beam, and multiple battery monomers are respectively bonded to the structural beam through the glue layer.

15. An electrical device, comprising: The battery as claimed in any one of claims 1-14 is used to provide electric energy to the electric device.

16. A vehicle, wherein, The top of the battery as claimed in any one of claims 1-14 is the bottom plate of the vehicle.

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