Battery apparatus and electric device

Abstract

A battery apparatus of the present application comprises battery cells and a battery case, wherein the battery case comprises a case frame and a heat exchange plate; the case frame defines a mounting cavity; the case frame comprises a first end portion; a first opening communicated with the mounting cavity runs through the first end portion; the heat exchange plate is arranged on the side of the first end portion facing away from the mounting cavity and is used for blocking the first opening; the heat exchange plate is thermally coupled to the battery cells; the first end portion comprises a first mounting portion and a second mounting portion which are continuously arranged, the first mounting portion abuts against the heat exchange plate, the second mounting portion is spaced apart from the heat exchange plate, and the first mounting portion is located on the side of the second mounting portion close to the first opening or the first mounting portion is located on the side of the second mounting portion facing away from the first opening; a sealing slot for accommodating a sealant is formed between the second mounting portion and the heat exchange plate, at least one of the second mounting portion and the heat exchange plate is provided with a first protruding rib, and the first protruding rib protrudes towards the inside of the sealing slot. The present application can improve the sealing effect of the case frame and the heat exchange plate.

Description

Battery device and electric equipment

[0001] Cross Reference to Related Applications

[0002] This application claims priority to and the benefit of the following patent applications, the contents of which are incorporated herein by reference in their entirety:

[0003] Chinese Patent Application No. 202411045673.9, filed on July 31, 2024, entitled “Battery device and electric equipment” with the State Intellectual Property Office of China. TECHNICAL FIELD

[0004] The present application relates to the technical field of batteries, in particular to a battery device and an electric equipment. BACKGROUND

[0005] The battery box of the current electric vehicle includes a box frame and a heat exchange plate. The box frame is used to place battery monomers, and the heat exchange plate is connected to one side of the box frame to cool the battery monomers.

[0006] In the related art, the box frame and the heat exchange plate are bonded by sealing glue. However, overflow of the sealing glue is prone to occur during the bonding process of the box frame and the heat exchange plate, which leads to poor sealing effect and causes sealing failure. SUMMARY

[0007] In view of the defects in the prior art, the purpose of the present application is to provide a battery device and an electric equipment, which can effectively solve the problem of poor sealing effect of the box frame and the heat exchange plate.

[0008] A first aspect of the present application discloses a battery device, comprising:

[0009] a battery monomer;

[0010] a battery box, the battery box comprising a box frame and a heat exchange plate, the box frame enclosing an installation cavity for accommodating the battery monomer, the box frame comprising a first end portion, the first end portion being provided with a first opening in communication with the installation cavity, the heat exchange plate being arranged on a side of the first end portion away from the installation cavity and used to block the first opening, the heat exchange plate being in thermal conductive connection with the battery monomer;

[0011] The first end portion comprises a first mounting portion and a second mounting portion arranged in sequence, the first mounting portion abuts against the heat exchange plate, the second mounting portion is arranged in space from the heat exchange plate, the first mounting portion is located on the side close to the first opening of the second mounting portion or the first mounting portion is located on the side away from the first opening of the second mounting portion; the second mounting portion and the heat exchange plate form a sealing groove for accommodating the sealant between them, and at least one of the second mounting portion and the heat exchange plate is provided with a first protruding rib, the first protruding rib protrudes into the sealing groove and separates the sealing groove into a plurality of groove segments along the arrangement direction of the first mounting portion and the second mounting portion.

[0012] According to the battery device, the first mounting portion abuts against the heat exchange plate, the second mounting portion is arranged in space from the heat exchange plate and forms a sealing groove, the sealing groove can be provided with the sealant, so that the box frame and the heat exchange plate can be sealed by the sealant in the sealing groove, meanwhile, the sealing groove is also provided with the first protruding rib, the first protruding rib can block the sealant in the sealing groove, reduce the overflow of the sealant to the outside of the sealing groove, and make the sealing groove form a plurality of groove segments, so that a plurality of sealant layers are formed through the plurality of groove segments, thereby improving the sealing effect of the box frame and the heat exchange plate.

[0013] In some embodiments of the present application, along the arrangement direction of the box frame and the heat exchange plate, the maximum size of the sealing groove is H1, and the size of the first protruding rib is H2, wherein H2

[0014] By setting H2 to be less than H1, that is, the first protruding rib is arranged in space from the inner wall surface of the sealing groove along the arrangement direction of the first mounting portion and the second mounting portion, so that the sealant in the sealing groove can be distributed on both sides of the first protruding rib through the gap between the first protruding rib and the inner wall surface of the sealing groove, thereby forming a plurality of sealant layer structures along the arrangement direction of the first mounting portion and the second mounting portion, and improving the sealing effect of the box frame and the heat exchange plate.

[0015] In some embodiments of the present application, 1 / 3≤H2 / H1≤2 / 3.

[0016] By setting 1 / 3≤H2 / H1≤2 / 3, the sealing groove 317 can have sufficient sealant to form a sealant layer, and also has a certain blocking effect, so that a plurality of sealant layer structures are formed along the arrangement direction of the first mounting portion and the second mounting portion, and the sealing effect of the box frame and the heat exchange plate is improved.

[0017] In some embodiments of the present application, the size range value of H1 is 1mm≤H1≤5mm, and the size range value of H2 is 0.5mm≤H2≤3mm.

[0018] Through the above size setting, the sealing groove can have sufficient sealant to form a sealant layer, and also has a certain shielding effect, so that a plurality of sealant layer structures can be formed along the arrangement direction of the first mounting portion and the second mounting portion, thereby improving the sealing effect of the box frame and the heat exchange plate.

[0019] In some embodiments of the present application, the size of the first end portion along the arrangement direction of the first mounting portion and the second mounting portion is W1, and the size of the sealing groove is W2, wherein 1 / 5≤W2 / W1≤1 / 2.

[0020] Through the setting of 1 / 5≤W2 / W1≤1 / 2, the sealing groove can have sufficient size to form a sealant layer, and also can improve the contact size of the first end portion and the heat exchange plate, thereby improving the connection strength and support effect between the box frame and the heat exchange plate.

[0021] In some embodiments of the present application, the size range of W1 is 20mm≤W1≤60mm, and the size range of W2 is 4mm≤W2≤15mm.

[0022] Through the above size setting, the box frame can have sufficient support strength, the sealing groove can have sufficient size to form a sealant layer, and the contact size of the first end portion and the heat exchange plate can be improved, thereby improving the connection strength and support effect between the box frame and the heat exchange plate.

[0023] In some embodiments of the present application, the heat exchange plate comprises a first plate portion and a second plate portion connected together, the first plate portion is arranged on the side of the second plate portion facing the box frame, the first plate portion is bonded to the first mounting portion, and a heat exchange flow channel is formed between the first plate portion and the second plate portion.

[0024] By arranging the first plate portion on the side of the second plate portion facing the box frame and bonding the first plate portion to the first mounting portion, the box frame and the heat exchange plate can be connected, and the abutting portion of the box frame and the heat exchange plate can be sealed. At the same time, the heat exchange flow channel is used for circulating heat exchange medium, so as to adjust the temperature of the first plate portion, and adjust the temperature of the battery monomer in the mounting cavity through the first plate portion.

[0025] In some embodiments of the present application, a sealing groove is formed between the first plate portion and the second mounting portion, and a first protruding rib is formed on the surface of the first plate portion facing the sealing groove.

[0026] By forming the first protruding rib on the surface of the first plate portion facing the sealing groove, the first protruding rib can shield the sealant in the sealing groove, reduce the overflow of the sealant outside the sealing groove, so that the sealing groove has sufficient sealant to form a sealant layer, and the first protruding rib can also improve the rigidity of the first plate portion and reduce the deformation of the first plate portion, thereby improving the sealing effect between the box frame and the heat exchange plate.

[0027] In some embodiments of the present application, the second plate portion is formed with a second protruding rib on a surface thereof facing the sealing groove, the second protruding rib being inserted into the first protruding rib and being in abutment with the first protruding rib.

[0028] By inserting the second protruding rib into the first protruding rib and abutting the second protruding rib with the first protruding rib, the support strength of the first protruding rib can be improved, thereby improving the rigidity of the heat exchange plate, reducing the deformation of the heat exchange plate, and improving the sealing effect between the box frame and the heat exchange plate.

[0029] In some embodiments of the present application, the edge of the second plate portion is provided with a folded edge bent in a direction towards the first plate portion, and the edge of the folded edge is arranged to protrude beyond the surface of the first plate portion along the arrangement direction of the box frame and the heat exchange plate.

[0030] By arranging the folded edge on the edge of the second plate portion and arranging the edge of the folded edge to protrude beyond the surface of the first plate portion, the sealing glue in the sealing groove can be shielded by the folded edge, and the overflow of the sealing glue towards the outside of the sealing groove can be reduced, so that the sealing groove has sufficient sealing glue to form a sealing glue layer.

[0031] In some embodiments of the present application, the folded edge is arranged to be spaced apart from the edge of the first plate portion along the arrangement direction of the first mounting portion and the second mounting portion.

[0032] By arranging the folded edge to be spaced apart from the edge of the first plate portion, part of the sealing glue can be arranged in the gap between the folded edge and the first plate portion, thereby improving the fixing effect of the sealing glue layer and further improving the sealing effect between the box frame and the heat exchange plate.

[0033] In some embodiments of the present application, a sealing groove is formed between the second plate portion and the second mounting portion, and the first protruding rib is formed on a surface of the second plate portion facing the sealing groove.

[0034] By forming the first protruding rib on the surface of the second plate portion facing the sealing groove, the first protruding rib can shield the sealing glue in the sealing groove, reduce the overflow of the sealing glue towards the outside of the sealing groove, so that the sealing groove has sufficient sealing glue to form a sealing glue layer, and the first protruding rib can also improve the rigidity of the second plate portion, reduce the deformation of the second plate portion, and improve the sealing effect between the box frame and the heat exchange plate.

[0035] In some embodiments of the present application, the sealing groove is a ring-shaped groove with a first end connected to a second end, and the first protruding rib is a ring-shaped protruding rib with a first end connected to a second end.

[0036] By arranging the sealing groove as a ring-shaped groove with a first end connected to a second end and arranging the first protruding rib as a ring-shaped protruding rib with a first end connected to a second end, the ring-shaped protruding rib can cooperate with the sealing glue in the ring-shaped groove, thereby forming multiple ring-shaped sealing glue layers in the ring-shaped groove, and further improving the sealing effect between the box frame and the heat exchange plate.

[0037] In some embodiments of the present application, the battery box further comprises a first cover plate, the heat exchange plate is clamped between the first cover plate and the box frame, and the box frame, the heat exchange plate and the first cover plate are sequentially connected by the connecting piece.

[0038] The first cover plate is used for fixedly connecting the box frame and clamping and fixing the heat exchange plate between the first cover plate and the box frame, thereby supporting the heat exchange plate and improving the sealing effect of the box frame and the heat exchange plate.

[0039] In some embodiments of the present application, the box frame further comprises a second end portion, the second end portion is arranged at the opposite end of the box frame from the first end portion, and the second end portion is provided with a second opening penetrating through and communicating with the mounting cavity.

[0040] By providing the second opening penetrating through the second end portion, the battery can be placed in the mounting cavity inside the box frame through the second opening.

[0041] The second aspect of the present application provides a power consumption device, which has the battery device of any one of the above.

[0042] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clear and understandable, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0043] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings indicate the same or similar components. In the drawings:

[0044] FIG. 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application;

[0045] FIG. 2 is a structural schematic diagram of a battery device according to an embodiment of the present application;

[0046] FIG. 3 is a structural schematic diagram of a battery monomer assembly according to an embodiment of the present application;

[0047] FIG. 4 is an exploded structural schematic diagram of a battery monomer according to an embodiment of the present application;

[0048] FIG. 5 is an exploded structural schematic diagram of a battery box according to an embodiment of the present application;

[0049] FIG. 6 is an A-A cross-sectional structural schematic diagram of the battery box in FIG. 2;

[0050] Fig. 7 is a schematic diagram of a partial cross-sectional structure of a battery case according to another embodiment of the present application;

[0051] Fig. 8 is a schematic diagram of a partial cross-sectional structure of a battery case according to another embodiment of the present application;

[0052] Fig. 9 is a schematic diagram of an enlarged structure of part B in Fig. 6;

[0053] Fig. 10 is a schematic diagram of a partial cross-sectional structure of a battery case according to another embodiment of the present application;

[0054] Fig. 11 is a schematic diagram of a partial cross-sectional structure of a battery case according to another embodiment of the present application;

[0055] Fig. 12 is a schematic diagram of an enlarged structure of part C in Fig. 5.

[0056] The reference signs in the detailed description are as follows: 1, vehicle; 10, battery device; 11, controller; 12, motor; 20, battery cell assembly; 21, battery cell; 211, end cover; 212, shell; 213, electrode assembly; 214, electrode terminal; 30, battery case; 31, case frame; 311, mounting cavity; 312, first end portion; 3121, first mounting portion; 3122, second mounting portion; 313, first opening; 314, second end portion; 315, second opening; 316, support beam; 317, sealing groove; 318, third mounting hole; 32, heat exchange plate; 321, first plate portion; 3211, first protruding rib; 322, second plate portion; 3221, second protruding rib; 3222, flange; 323, second mounting hole; 33, first cover plate; 331, first mounting hole. Detailed Description of the Embodiments

[0057] 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.

[0058] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meanings understood by the skilled in the art to which the embodiments of the present application belong.

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "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 shown in the drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0060] In addition, the technical terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0061] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0062] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0063] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of water power, fire power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. Lithium ion battery has been widely used in mobile and portable electric appliances due to its high energy density, high average open circuit voltage and long cycle life.

[0064] The battery box of the electric vehicle currently comprises a box frame and a heat exchange plate. The box frame is internally used for placing battery monomers, and the heat exchange plate is connected to one side of the box frame for cooling the battery monomers.

[0065] In the related art, the box frame and the heat exchange plate are bonded by using a sealing glue. However, overflow temperature is prone to occur in the bonding process of the box frame and the heat exchange plate, thereby resulting in poor sealing effect and causing sealing failure.

[0066] To solve the problem of poor sealing effect between the box frame and the heat exchange plate, the present application provides a battery box, a battery with the battery box, and a power consumption device with the battery. According to the battery box of the present application, the sealing effect between the box frame and the heat exchange plate can be improved.

[0067] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery monomers connected in series, in parallel, or in a hybrid manner through a busbar component.

[0068] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery monomers; as an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery monomers into an independent module. As an example, the battery module can be formed by bundling a plurality of battery monomers by a cable tie.

[0069] In some embodiments, the battery apparatus can be a battery pack including a box and one or more battery cell assemblies accommodated in the box.

[0070] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the battery box by fixing the battery module in the battery box.

[0071] As an example, the battery cell assembly can also be accommodated in the battery box by directly fixing a plurality of battery monomers in the battery box.

[0072] The battery apparatus in the present application is suitable for various power consumption devices using the battery apparatus, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, electric vehicles, ships, and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The battery is used to provide electric energy for the above-mentioned power consumption devices.

[0073] It should be understood that the technical solutions described in the embodiments of the present application are not only applicable to the above-described battery and electric device, but also applicable to all batteries including a box body and all electric devices using the battery, but for the sake of brevity, the following embodiments are described by taking an electric vehicle as an example.

[0074] FIG. 1 is a structural schematic diagram of a vehicle 1 according to some embodiments of the present application. As shown in FIG. 1, the vehicle 1 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1 is internally provided with a battery device 10, which can be arranged at the bottom, the head, or the tail of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1, for example, the battery device 10 can be used as an operating power source of the vehicle 1. The vehicle 1 can further include a controller 11 and a motor 12, and the controller 11 is used to control the battery device 10 to supply power to the motor 12, for example, to meet the power demand of the vehicle 1 during starting, navigation, and driving.

[0075] In some embodiments of the present application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0076] FIG. 2 is a structural schematic diagram of the battery device 10 according to an embodiment of the present application. FIG. 3 is a structural schematic diagram of a battery cell assembly 20 according to an embodiment of the present application. As shown in FIGS. 2 and 3, in order to meet different power demands, the battery device 10 can include a plurality of battery cells 21, which are the smallest units constituting the battery device 10. The plurality of battery cells 21 can be connected in series and / or in parallel via electrode terminals to be applied to various application occasions. Among them, the plurality of battery cells 21 can be connected in series, in parallel, or in a mixed manner, and the mixed manner refers to a mixture of series connection and parallel connection.

[0077] As shown in FIGS. 2 and 3, the battery device 10 can include a plurality of battery cell assemblies 20 and a battery box 30, and the plurality of battery cell assemblies 20 are accommodated in the interior of the battery box 30. The battery box 30 is used to accommodate the battery cells 21 or the battery cell assemblies 20, so as to reduce the influence of liquid or other foreign matters on the charging or discharging of the battery cells 21. The battery box 30 can be a simple cuboid or a simple cylinder or a simple sphere, or a complex cuboid or a complex cylinder or a complex sphere composed of a plurality of simple cuboids or a plurality of simple cylinders or a plurality of simple spheres. The material of the battery box 30 can be an alloy material such as an aluminum alloy or an iron alloy, a high polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material such as glass fiber and epoxy resin.

[0078] The battery cell assembly 20 can include a plurality of battery cells 21, which can be connected in series or in parallel or in a mixed manner to form the battery cell assembly 20, and the plurality of battery cell assemblies 20 can be connected in series or in parallel or in a mixed manner to form the battery device 10. The battery cell 21 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, and the present application is not limited thereto. The battery cell 21 is generally divided into three types according to the packaging manner: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the present application is not limited thereto. However, for the sake of simplicity, the following embodiments will be described by taking the square lithium-ion battery cell 21 as an example.

[0079] FIG. 4 is an exploded structural schematic view of the battery cell 21 according to some embodiments of the present application. The battery cell 21 refers to the smallest unit that forms the battery device 10. As shown in FIG. 4, the battery cell 21 includes an end cover 211, a shell 212, and an electrode assembly 213.

[0080] The end cover 211 refers to a component that covers the opening of the shell 212 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cover 211 can be adapted to the shape of the shell 212 to fit the shell 212. Alternatively, the end cover 211 can be made of a material with certain hardness and strength (such as aluminum alloy), so that the end cover 211 is not easily deformed when subjected to extrusion and impact, so that the battery cell 21 can have higher structural strength, and the safety performance can also be improved. The end cover 211 can be provided with functional components such as the electrode terminal 214. The electrode terminal 214 can be used to electrically connect with the electrode assembly 213 for outputting or inputting the electrical energy of the battery cell 21. In some embodiments, the end cover 211 can also be provided with a pressure relief mechanism for relieving the internal pressure of the battery cell 21 when the internal pressure or temperature reaches a threshold value. In some embodiments, an insulating member can also be provided on the inner side of the end cover 211, which can be used to isolate the electrical connection components in the shell 212 from the end cover 211 to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, or the like.

[0081] The case 212 is a component for fitting the end cover 211 to form an internal environment of the battery cell 21, wherein the formed internal environment can be used to accommodate the electrode assembly 213, electrolyte (not shown in the figure), and other components. The case 212 and the end cover 211 can be independent components, and an opening can be provided on the case 212, and the end cover 211 is fitted to cover the opening to form the internal environment of the battery cell 21. Without limitation, the end cover 211 and the case 212 can also be integrated, specifically, the end cover 211 and the case 212 can form a common connecting surface before other components are put into the case, and when it is necessary to seal the internal environment of the case 212, the end cover 211 is fitted to cover the case 212. The case 212 can be various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the case 212 can be determined according to the specific shape and size of the electrode assembly 213. The material of the case 212 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0082] The electrode assembly 213 is a component in which electrochemical reactions occur in the battery cell 21. One or more electrode assemblies 213 can be contained in the case 212. The electrode assembly 213 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 parts with active materials constituting the main body of the electrode assembly 213, and the parts without active materials of the positive and negative electrode sheets each constitute a tab (not shown in the figure). The positive and negative tabs can be located at one end of the main body or at two ends of the main body, respectively. In the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs are connected to the electrode terminal 214 to form a current loop.

[0083] In combination with FIGS. 2, 3, 5 and 6, in some embodiments of the present application, the battery box 30 comprises the battery monomer 21, the box frame 31 and the heat exchange plate 32, the box frame 31 encloses the mounting cavity 311 for accommodating the battery monomer 21, the box frame 31 comprises the first end portion 312, the first end portion 312 is provided with the first opening 313 in communication with the mounting cavity 311, the heat exchange plate 32 is arranged on the side of the first end portion 312 away from the mounting cavity 311 and is used for plugging the first opening 313, and the heat exchange plate 32 is in thermal conductive connection with the battery monomer 21; wherein the first end portion 312 comprises the first mounting portion 3121 and the second mounting portion 3122 arranged continuously, the first mounting portion 3121 abuts against the heat exchange plate 32, the second mounting portion 3122 is arranged spaced apart from the heat exchange plate 32, the first mounting portion 3121 is located on the side of the second mounting portion 3122 close to the first opening 313 or the first mounting portion 3121 is located on the side of the second mounting portion 3122 away from the first opening 313; the second mounting portion 3122 and the heat exchange plate 32 form the sealing groove 317 for accommodating the sealant therebetween, and at least one of the second mounting portion 3122 and the heat exchange plate 32 is provided with the first convex rib 3211 protruding into the sealing groove 317 and separating the sealing groove 317 into a plurality of groove segments along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122.

[0084] Specifically, the box frame 31 can be a simple solid structure such as a cuboid or a cylinder or a sphere, or a complex solid structure composed of a cuboid or a cylinder or a sphere. For the purpose of description, in some embodiments of the present application, only the case where the box frame 31 is a cuboid is described. Wherein the box frame 31 comprises the length direction X, the width direction Y and the height direction Z, the size of the box frame 31 along the length direction X can be greater than or equal to the size of the box frame 31 along the width direction Y. The box frame 31 comprises a plurality of support beams 316 connected end to end along the length direction X and the width direction Y and enclosing the mounting cavity 311 for accommodating the battery monomer 21. The ends of the plurality of support beams 316 on the same side of the height direction Z of the box frame 31 collectively form the first end portion 312, and the heat exchange plate 32 is arranged on the side of the first end portion 312 away from the mounting cavity 311 and connected with the ends of the plurality of support beams 316, specifically by bonding, thereby plugging the first opening 313 to reduce the entry of liquid or other foreign matters into the mounting cavity 311 through the first opening 313 and affecting the charging or discharging of the battery monomer 21.

[0085] The battery cell 21 can be directly in contact with the heat exchange plate 32 and connected in heat conduction along one side of the height direction Z of the box frame 31. Alternatively, the battery cell 21 can be connected with the heat exchange plate 32 through a heat conduction member along one side of the height direction Z of the box frame 31, so that the battery cell 21 can be connected in heat conduction with the heat exchange plate 32 through the heat conduction member. Alternatively, the battery cell 21 can be arranged apart from the heat exchange plate 32 along one side of the height direction Z of the box frame 31, and the heat conduction connection between the battery cell 21 and the heat exchange plate 32 is realized through heat convection.

[0086] In combination with FIGS. 2 and 6, in some embodiments of the present application, the height direction Z of the box frame 31 can coincide with the vertical direction. When the first end portion 312 is arranged below the box frame 31 along the vertical direction, the support beam 316 extends along the length direction X of the box frame 31, and the end portion of the support beam 316 bonded with the heat exchange plate 32 includes a first mounting portion 3121 and a second mounting portion 3122 arranged continuously along the width direction Y of the box frame 31. The first mounting portion 3121 is located on the side of the second mounting portion 3122 close to the first opening 313, the first mounting portion 3121 surrounds the first opening 313, and the second mounting portion 3122 is arranged on the side of the first mounting portion 3121 away from the first opening 313. The first mounting portion 3121 abuts against the heat exchange plate 32, and the second mounting portion 3122 is arranged apart from the heat exchange plate 32 and forms a sealing groove 317 for accommodating the sealant between the second mounting portion 3122 and the heat exchange plate 32, so that a sealant layer is formed on the side of the abutting portion of the first end portion 312 and the heat exchange plate 32 away from the first opening 313, to seal the first end portion 312 and the heat exchange plate 32. Since the sealant layer is arranged on the side of the abutting portion of the first mounting portion 3121 and the heat exchange plate 32 away from the first opening 313, even if the sealant in the sealing groove 317 escapes to the outside of the sealing groove 317, it will not cause pollution and damage to the battery cell 21 or other components in the mounting cavity 311.

[0087] Since the heat exchange plate 32 is bonded to the first end portion 312 and arranged below the cabinet frame 31, a first protruding rib 3211 can be arranged on the heat exchange plate 32 and protrude into the sealing groove 317, the first protruding rib 3211 can shield the sealant in the sealing groove 317, reduce the overflow of the sealant outside the sealing groove 317, and form a sealant layer in the sealing groove 317 to seal the first end portion 312 and the heat exchange plate 32. At the same time, the first protruding rib 3211 extends along the length direction X of the cabinet frame 31, divides the sealing groove 317 into multiple groove segments along the width direction Y of the cabinet frame 31, and forms multiple sealant layers through the multiple groove segments, thereby improving the sealing effect between the cabinet frame 31 and the heat exchange plate 32. Since the first protruding rib 3211 is arranged on the heat exchange plate 32, the first protruding rib 3211 can also improve the rigidity of the heat exchange plate 32 and reduce the deformation of the heat exchange plate 32, thereby improving the sealing effect between the cabinet frame 31 and the heat exchange plate 32. The first protruding rib 3211 can be formed by extruding and deforming part of the plate material of the heat exchange plate 32.

[0088] In combination with FIGS. 2 and 7, in some embodiments of the present application, the height direction Y of the cabinet frame 31 can coincide with the vertical direction. The first end portion 312 is arranged below the cabinet frame 31 along the vertical direction, the support beam 316 extends along the length direction X of the cabinet frame 31, and the end portion of the support beam 316 bonded to the heat exchange plate 32 includes a second mounting portion 3122 and a first mounting portion 3121 arranged continuously along the width direction Y of the cabinet frame 31. The first mounting portion 3121 is located on the side of the second mounting portion 3122 away from the first opening 313, and the second mounting portion 3122 surrounds the first opening 313. The second mounting portion 3122 is arranged spaced apart from the heat exchange plate 32 and forms a sealing groove 317 for accommodating sealant between the second mounting portion 3122 and the heat exchange plate 32, and the first mounting portion 3121 abuts against the heat exchange plate 32, thereby forming a sealant layer on the side of the abutting portion of the first end portion 312 and the heat exchange plate 32 close to the first opening 313 to seal the first end portion 312 and the heat exchange plate 32. Since the heat exchange plate 32 is bonded to the first end portion 312 and arranged below the cabinet frame 31, a first protruding rib 3211 can be arranged on the heat exchange plate 32 and protrude into the sealing groove 317, and the first protruding rib 3211 extends along the length direction X of the cabinet frame 31 and divides the sealing groove 317 along the width direction Y of the cabinet frame 31 into multiple groove segments.

[0089] Correspondingly, when the first end portion 312 is arranged below the cabinet frame 31 along the vertical direction, and the support beam 316 extends along the width direction Y of the cabinet frame 31, the end portion of the support beam 316 bonded with the heat exchange plate 32 includes the first mounting portion 3121 and the second mounting portion 3122 arranged continuously along the length direction X of the cabinet frame 31. The first mounting portion 3121 is in abutment with the heat exchange plate 32, and the second mounting portion 3122 is arranged in a spaced manner with the heat exchange plate 32 and forms a sealing groove 317 for accommodating the sealant between the second mounting portion 3122 and the heat exchange plate 32. The heat exchange plate 32 is provided with a first protruding rib 3211 protruding into the sealing groove 317, and the first protruding rib 3211 extends along the width direction Y of the cabinet frame 31 and divides the sealing groove 317 into a plurality of groove segments along the length direction X of the cabinet frame 31.

[0090] In combination with FIGS. 2 and 8, in some embodiments of the present application, the height direction Z of the cabinet frame 31 can coincide with the vertical direction. The first end portion 312 is arranged above the cabinet frame 31 along the vertical direction, and the support beam 316 extends along the length direction X of the cabinet frame 31. The end portion of the support beam 316 bonded with the heat exchange plate 32 includes the first mounting portion 3121 and the second mounting portion 3122 arranged continuously along the width direction Y of the cabinet frame 31. The first mounting portion 3121 is located on the side of the second mounting portion 3122 close to the first opening 313, the first mounting portion 3121 surrounds the first opening 313, and the second mounting portion 3122 is arranged on the side of the first mounting portion 3121 away from the first opening 313. The first mounting portion 3121 is in abutment with the heat exchange plate 32, and the second mounting portion 3122 is arranged in a spaced manner with the heat exchange plate 32 and forms a sealing groove 317 for accommodating the sealant between the second mounting portion 3122 and the heat exchange plate 32, so as to form a sealant layer on the side of the abutment between the first end portion 312 and the heat exchange plate 32 away from the first opening 313, thereby sealing the first end portion 312 and the heat exchange plate 32. Since the heat exchange plate 32 is bonded with the first end portion 312 and arranged above the cabinet frame 31, the first protruding rib 3211 can be arranged on the second mounting portion 3122 and protrude into the sealing groove 317, and the first protruding rib 3211 extends along the length direction X of the cabinet frame 31 to divide the sealing groove 317 into a plurality of groove segments along the width direction Y of the cabinet frame 31.

[0091] Correspondingly, in some embodiments of the present application, the first end portion 312 can also be arranged above the box frame 31 in the vertical direction, and the first mounting portion 3121 is located on the side of the second mounting portion 3122 away from the first opening 313, and the second mounting portion 3122 surrounds the first opening 313. At the same time, the second mounting portion 3122 is arranged in a spaced manner with the heat exchange plate 32, and a sealing groove 317 for accommodating sealant is formed between the second mounting portion 3122 and the heat exchange plate 32, so as to form a sealant layer on the side of the abutting portion of the first end portion 312 and the heat exchange plate 32 close to the first opening 313, so as to seal the first end portion 312 and the heat exchange plate 32. At the same time, the first protruding rib 3211 can be arranged on the first mounting portion 3121 and protrude into the sealing groove 317.

[0092] In some embodiments of the present application, a plurality of first protruding ribs 3211 can also be arranged in the sealing groove 317, and the plurality of first protruding ribs 3211 are arranged in a spaced manner along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122, so as to divide the sealing groove 317 into a plurality of groove segments along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122.

[0093] According to the battery box 30 of the present application, the first mounting portion 3121 abuts against the heat exchange plate 32, the second mounting portion 3122 is arranged in a spaced manner with the heat exchange plate 32 and forms the sealing groove 317, and the sealing groove 317 can be provided with sealant, so that the box frame 31 and the heat exchange plate 32 can be sealed by the sealant in the sealing groove 317. At the same time, the first protruding rib 3211 is also arranged in the sealing groove 317, the first protruding rib 3211 can block the sealant in the sealing groove 317, reduce the overflow of the sealant to the outside of the sealing groove 317, and divide the sealing groove 317 into a plurality of groove segments, so as to form a plurality of sealant layers through the plurality of groove segments, thereby improving the sealing effect of the box frame 31 and the heat exchange plate 32.

[0094] In combination with FIGS. 2 and 9, in some embodiments of the present application, along the arrangement direction of the box frame 31 and the heat exchange plate 32, the maximum size of the sealing groove 317 is H1, and the size of the first protruding rib 3211 is H2, wherein H2

[0095] In some embodiments of the present application, along the height direction Z of the box frame 31, the size H2 of the first protruding rib 3211 is smaller than the maximum size H1 of the sealing groove 317. In order to facilitate the transition connection between the first mounting portion 3121 and the second mounting portion 3122, the side of the second mounting portion 3122 close to the first mounting portion 3122 is provided with an arc-shaped portion, and the part of the second mounting portion 3122 except the arc-shaped portion is parallel to the plate surface of the heat exchange plate 32. The parallel spacing size between the part of the second mounting portion 3122 except the arc-shaped portion and the plate surface of the heat exchange plate 32 is the maximum size H1 of the sealing groove 317.

[0096] By setting H2 to be less than H1, i.e. along the arrangement direction of the box frame 31 and the heat exchange plates 32, the first protruding ribs 3211 are arranged spaced apart from the inner wall surface of the sealing groove 317, so that the sealing glue in the sealing groove 317 can be distributed on both sides of the first protruding ribs 3211 through the gap between the first protruding ribs 3211 and the inner wall surface of the sealing groove 317, and then a plurality of sealing glue layer structures are formed along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122, thereby improving the sealing effect of the box frame 31 and the heat exchange plates 32.

[0097] As shown in FIG. 9, in some embodiments of the present application, 1 / 3≤H2 / H1≤2 / 3.

[0098] By setting 1 / 3≤H2 / H1≤2 / 3, the sealing groove 317 can have sufficient sealing glue to form a sealing glue layer, and also has a certain shielding effect, so that a plurality of sealing glue layer structures can be formed along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122, thereby improving the sealing effect of the box frame 31 and the heat exchange plates 32.

[0099] As shown in FIG. 9, in some embodiments of the present application, the size range of H1 is 1mm≤H1≤5mm, and the size range of H2 is 0.5mm≤H2≤3mm.

[0100] Specifically, H1 can be any value including both endpoints between 1mm…3mm…4mm…5mm. H2 can be any value including both endpoints between 0.5mm…1mm…2mm…3mm.

[0101] By the above size setting, the sealing groove 317 can have sufficient sealing glue to form a sealing glue layer, and also has a certain shielding effect, so that a plurality of sealing glue layer structures can be formed along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122, thereby improving the sealing effect of the box frame 31 and the heat exchange plates 32.

[0102] As shown in FIG. 9, in some embodiments of the present application, along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122, the size of the first end portion 312 is W1, and the size of the sealing groove 317 is W2, wherein 1 / 5≤W2 / W1≤1 / 2.

[0103] By setting 1 / 5≤W2 / W1≤1 / 2, the sealing groove 317 can have sufficient size to form a sealing glue layer, and also can improve the contact size of the first end portion 312 and the heat exchange plates 32 along the width direction Y of the box frame 31, thereby improving the connection strength and support effect between the box frame 31 and the heat exchange plates 32.

[0104] In some embodiments of the present application, the size of W1 is in the range of 20 mm≤W1≤60 mm, and the size of W2 is in the range of 4 mm≤W2≤15 mm.

[0105] Specifically, W1 can be any value between and including the endpoints of 20 mm…30 mm…50 mm…60 mm. W2 can be any value between and including the endpoints of 4 mm…8 mm…10 mm…15 mm. Through the above size setting, the box frame 31 can have sufficient support strength, and the sealing groove 317 can have sufficient size to form a sealing glue layer, and the contact size of the first end portion 312 and the heat exchange plate 32 along the width direction Y of the box frame 31 can be improved, thereby improving the connection strength and support effect between the box frame 31 and the heat exchange plate 32.

[0106] In combination with FIGS. 3, 5, 6, and 9, in some embodiments of the present application, the heat exchange plate 32 includes a first plate portion 321 and a second plate portion 322 connected together, the first plate portion 321 is arranged on the side of the second plate portion 322 facing the box frame 31, the first plate portion 321 is bonded to the first mounting portion 3121, and a heat exchange flow channel is formed between the first plate portion 321 and the second plate portion 322.

[0107] Specifically, the first plate portion 321 and the second plate portion 322 can be connected together by welding, which can be brazing. The first plate portion 321 is arranged on the side of the second plate portion 322 facing the box frame 31, and the first plate portion 321 is bonded to the first mounting portion 3121, thereby connecting the box frame 31 and the heat exchange plate 32 and sealing the abutting portion of the box frame 31 and the heat exchange plate 32. Part of the plate surface of one of the first plate portion 321 and the second plate portion 322 is recessed in a direction away from the other, thereby forming a flow channel groove, and a heat exchange flow channel is formed between the first plate portion 321 and the second plate portion 322 after they are connected. The heat exchange flow channel can circulate a heat exchange medium, which can include water, kerosene, or other liquid medium. The heat exchange medium can exchange heat with the first plate portion 321 during its flow in the heat exchange flow channel, thereby adjusting the temperature of the first plate portion 321. The first plate portion 321 after temperature adjustment exchanges heat with the battery monomer 21, thereby adjusting the temperature of the battery monomer 21 in the mounting cavity 311 through the first plate portion 321.

[0108] In combination with FIGS. 2 and 10, in some embodiments of the present application, a sealing groove 317 is formed between the first plate portion 321 and the second mounting portion 3122, and a first protruding rib 3211 is formed on the surface of the first plate portion 321 facing the sealing groove 317.

[0109] In combination with FIG. 2 and FIG. 10, in some embodiments of the present application, the first mounting portion 3121 and the second mounting portion 3122 are arranged along the width direction Y of the box frame 31. The first plate portion 321 is arranged beyond the end of the first mounting portion 3121 along the width direction Y of the box frame 31 away from the end of the mounting cavity 311, and a sealing groove 317 is formed between the first plate portion 321 and the second mounting portion 3122. The surface of the first plate portion 321 facing the sealing groove 317 is formed with a first protruding rib 3211, and the second plate portion 322 is a substantially flat plate structure. The first protruding rib 3211 can be formed by extruding the first plate portion 321 alone before the first plate portion 321 is formed into the heat exchange plate 32.

[0110] By forming the first protruding rib 3211 on the surface of the first plate portion 321 facing the sealing groove 317, the first protruding rib 3211 can block the sealant in the sealing groove 317, reducing the overflow of the sealant outside the sealing groove 317, so that there is enough sealant in the sealing groove 317 to form a sealant layer. The first protruding rib 3211 can also improve the rigidity of the first plate portion 321, reducing the deformation of the first plate portion 321, thereby improving the sealing effect between the box frame 31 and the heat exchange plate 32.

[0111] In combination with FIG. 2, FIG. 6 and FIG. 9, in some embodiments of the present application, the surface of the second plate portion 322 facing the sealing groove 317 is formed with a second protruding rib 3221, which is inserted into the interior of the first protruding rib 3211 and fits with the first protruding rib 3211.

[0112] In combination with FIG. 2 and FIG. 6, in some embodiments of the present application, the first mounting portion 3121 and the second mounting portion 3122 are arranged along the width direction Y of the box frame 31. The first plate portion 321 and the second plate portion 322 are arranged beyond the end of the first mounting portion 3121 along the width direction Y of the box frame 31 away from the end of the mounting cavity 311, and a sealing groove 317 is formed between the first plate portion 321 and the second mounting portion 3122. The surface of the first plate portion 321 facing the sealing groove 317 is formed with a first protruding rib 3211, and the surface of the second plate portion 322 facing the sealing groove 317 is formed with a second protruding rib 3221, which is inserted into the interior of the first protruding rib 3211 and fits with the first protruding rib 3211. The first protruding rib 3211 and the second protruding rib 3221 can be formed by extruding the first plate portion 321 and the second plate portion 322 together after the first plate portion 321 and the second plate portion 322 are connected into the heat exchange plate 32.

[0113] By inserting the second protruding rib 3221 into the interior of the first protruding rib 3211 and fitting with the first protruding rib 3211, the support strength of the first protruding rib 3211 can be improved, thereby improving the rigidity of the heat exchange plate 32, reducing the deformation of the heat exchange plate 32, and thereby improving the sealing effect between the box frame 31 and the heat exchange plate 32.

[0114] In some embodiments of the present application, the edge of the second plate portion 322 is provided with a bent edge 3222 bent in a direction towards the first plate portion 321 along the arrangement direction of the heat exchange plate 32 and the box frame 31, and the edge of the bent edge 3222 is arranged to protrude beyond the surface of the first plate portion 321 along the height direction of the box frame 31.

[0115] In some embodiments of the present application, the edge of the second plate portion 322 is provided with a bent edge 3222 bent in a direction towards the first plate portion 321 along the height direction of the box frame 31, and the edge of the bent edge 3222 is arranged to protrude beyond the surface of the first plate portion 321 along the height direction of the box frame 31.

[0116] By arranging the bent edge 3222 at the edge of the second plate portion 322 and arranging the edge of the bent edge 3222 to protrude beyond the surface of the first plate portion 321, the sealing glue in the sealing groove 317 can be shielded by the bent edge 3222, and the overflow of the sealing glue towards the outside of the sealing groove 317 can be reduced, so that the sealing groove 317 has sufficient sealing glue to form a sealing glue layer.

[0117] In some embodiments of the present application, the bent edge 3222 is arranged to be spaced apart from the edge of the first plate portion 321 along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122.

[0118] In some embodiments of the present application, the first mounting portion 3121 and the second mounting portion 3122 are arranged along the width direction Y of the box frame 31, and the bent edge 3222 is arranged to be spaced apart from the edge of the first plate portion 321 along the width direction Y of the box frame 31, and a mounting groove for accommodating the sealing glue is formed between the bent edge 3222 and the edge of the first plate portion 321.

[0119] By arranging the bent edge 3222 to be spaced apart from the edge of the first plate portion 321, part of the sealing glue can be arranged in the gap between the bent edge 3222 and the first plate portion 321, so as to improve the fixing effect of the sealing glue layer, and further improve the sealing effect between the box frame 31 and the heat exchange plate 32.

[0120] In some embodiments of the present application, a sealing groove 317 is formed between the second plate portion 322 and the second mounting portion 3122, and the first protruding rib 3211 is formed on the surface of the second plate portion 322 towards the sealing groove 317.

[0121] In some embodiments of the present application, the first mounting portion 3121 and the second mounting portion 3122 are arranged along the width direction Y of the box frame 31. Along the width direction Y of the box frame 31, one end of the first plate portion 321 is flush with one end of the first mounting portion 3121 and is not arranged beyond the end of the first mounting portion 3121. Along the width direction Y of the box frame 31, one end of the second plate portion 322 is arranged beyond the end of the first mounting portion 3121 and forms the sealing groove 317 with the second mounting portion 3122. The surface of the second plate portion 322 towards the sealing groove 317 is formed with the first protruding rib 3211.

[0122] By forming the first protruding rib 3211 on the surface of the second plate portion 322 towards the sealing groove 317, the first protruding rib 3211 can block the sealant in the sealing groove 317, reduce the overflow of the sealant towards the outside of the sealing groove 317, so that there is enough sealant in the sealing groove 317 to form a sealant layer, and the first protruding rib 3211 can also improve the rigidity of the second plate portion 322 and reduce the deformation of the second plate portion 322, thereby improving the sealing effect between the box frame 31 and the heat exchange plate 32.

[0123] In combination with FIGS. 5 and 6, in some embodiments of the present application, the sealing groove 317 is a ring-shaped groove with the first end connected to the second end, and the first protruding rib 3211 is a ring-shaped protruding rib with the first end connected to the second end.

[0124] Specifically, the box frame 31 includes a plurality of support beams 316, which are sequentially connected end to end along the length direction X and the width direction Y of the box frame 31 and form a rectangular ring structure. Correspondingly, the plurality of support beams 316 and the end portions of the heat exchange plates 32 connected thereto jointly form the first end portion 312, and the first mounting portion 3121 and the second mounting portion 3122 of the rectangular ring structure are formed on the first end portion 312. The first mounting portion 3121 is bonded to the heat exchange plate 32, and the second mounting portion 3122 is arranged apart from the heat exchange plate 32 and forms the sealing groove 317 of the rectangular ring structure therebetween. Correspondingly, the first protruding rib 3211 is a ring-shaped protruding rib with the first end connected to the second end, thereby separating the sealing groove 317 of the rectangular ring structure into a plurality of groove segments along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122.

[0125] By arranging the sealing groove 317 as a ring-shaped groove with the first end connected to the second end and arranging the first protruding rib 3211 as a ring-shaped protruding rib with the first end connected to the second end, the ring-shaped protruding rib can cooperate with the sealant in the ring-shaped groove to form a plurality of ring-shaped sealant layers in the ring-shaped groove, thereby improving the sealing effect between the box frame 31 and the heat exchange plate 32.

[0126] In combination with FIGS. 5 and 12, in some embodiments of the present application, the battery box 30 further comprises a first cover plate 33, and the heat exchange plate 32 is clamped between the first cover plate 33 and the box frame 31, and the box frame 31, the heat exchange plate 32 and the first cover plate 33 are sequentially connected by connecting pieces.

[0127] Specifically, the first cover plate 33 is arranged on the side of the heat exchange plate 32 away from the box frame 31 and connected with the box frame 31, so as to clamp the heat exchange plate 32 between the first cover plate 33 and the box frame 31. Among them, the first cover plate 33 is provided with a first mounting hole 331 penetrating therethrough, the heat exchange plate 32 is provided with a second mounting hole 323 penetrating therethrough, and the box frame 31 is provided with a third mounting hole 318 penetrating therethrough. The connecting pieces sequentially pass through the first mounting hole 331, the second mounting hole 323 and the third mounting hole 318, so as to sequentially connect the box frame 31, the heat exchange plate 32 and the first cover plate 33. Among them, the connecting pieces can be bolts, and the third mounting hole 318 can be provided with internal threads matched with the bolts. Alternatively, the connecting pieces can sequentially pass through the third mounting hole 318, the second mounting hole 323 and the first mounting hole 331, and a nut is arranged on the side of the first cover plate 33 away from the heat exchange plate 32, and the bolt is matched with the nut, so as to sequentially connect the box frame 31, the heat exchange plate 32 and the first cover plate 33. Among them, the second mounting hole 323 is arranged on the inner side of the first protruding rib 3211, that is, the second mounting hole 323 is arranged on the side of the first protruding rib 3211 close to the mounting cavity 311.

[0128] The first cover plate 33 is used to fixedly connect the box frame 31 and clamps and fixes the heat exchange plate 32 between the first cover plate 33 and the box frame 31, so as to support the heat exchange plate 32 and improve the sealing effect between the box frame 31 and the heat exchange plate 32. The first cover plate 33 can also act as a bottom guard plate to protect the battery device 100. In combination with FIGS. 2, 3 and 5, in some embodiments of the present application, the box frame 31 further comprises a second end portion 314, and the second end portion 314 and the first end portion 312 are respectively arranged at opposite ends of the box frame 31, and the second end portion 314 is provided with a second opening 315 penetrating and communicating with the mounting cavity 311.

[0129] Specifically, the box frame 31 comprises a plurality of support beams 316, which are sequentially connected end to end along the length direction and the width direction of the box frame 31, and the plurality of support beams 316 commonly form a first end portion 312 at one end along the height direction and commonly form a second end portion 314 at the other end along the height direction. The second end portion 314 is provided with a second opening 315 communicating with the mounting cavity 311, and the battery monomer 21 can be placed in the mounting cavity 311 through the second opening 315 and supported by the heat exchange plate 32. When the height direction Z of the box frame 31 coincides with the vertical direction, the first end portion 312 can serve as the bottom end of the box frame 31, and the second end portion 314 can serve as the top end of the box frame 31, and the heat exchange plate 32 is connected with the first end portion 312 and arranged at the bottom of the box frame 31, so that the battery monomer 21 can be supported by the heat exchange plate 32.

[0130] In combination with FIGS. 2 and 5, in some embodiments of the present application, the battery box 30 can further comprise a second cover plate (not shown in the figures), which is arranged on the side of the second end portion 314 away from the mounting cavity 311 and connected with the box frame 31, so as to block the second opening 315 and reduce the entry of liquid or other foreign matters into the mounting cavity 311 through the second opening 315.

[0131] In combination with FIGS. 2, 3 and 5, in some embodiments of the present application, the second end portion 314 can also have a closed structure, i.e., the first end portion 312 of the box frame 31 is an open end, and the second end portion 314 is a closed end. The battery monomer 21 can be placed in the mounting cavity 311 through the first opening 313, and after the battery monomer 21 is assembled into the mounting cavity 311, the heat exchange plate 32 and the first cover plate 33 are connected.

[0132] As shown in FIG. 1, the second aspect of the present application proposes an electric device, which has the battery device 10 of any of the above embodiments.

[0133] Since the electric device in the present application has the same technical features as the battery device 10 of any of the above embodiments, the same technical effects can be achieved, and here will not be repeated.

[0134] As shown in FIG. 1, in some embodiments of the present application, the electric device can be a vehicle 1, which comprises the battery device 10 of any of the above embodiments, and the battery device 10 is used to provide electric energy for the vehicle 1 and drive the vehicle 1 to move.

[0135] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, which can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described.

[0136] As shown in FIG. 1, in some embodiments of the present application, the electric device can be a vehicle 1, and the vehicle 1 comprises a battery device 10 for providing electric energy for the vehicle 1 and driving the vehicle 1 to move.

[0137] As shown in FIGS. 1-3, the battery device 10 comprises a battery box 30 and at least one battery cell 21, the battery box 30 comprises a box frame 31 and a heat exchange plate 32, an installation cavity 311 for accommodating the battery cell 21 is formed in the inside of the box frame 31, the box frame 31 comprises a first end portion 312, the first end portion 312 is provided with a first opening 313 communicating with the installation cavity 311, the heat exchange plate 32 is arranged on the side of the first end portion 312 away from the installation cavity 311 and is used for plugging the first opening 313, and the at least one battery cell 21 is arranged in the installation cavity 311 of the box frame 31 and is in heat conduction connection with the heat exchange plate 32. The first end portion 312 is arranged at the bottom end of the box frame 31 in the vertical direction.

[0138] As shown in FIGS. 5 and 6, the first end portion 312 comprises a first mounting portion 3121 and a second mounting portion 3122 arranged in sequence, the first mounting portion 3121 is arranged on the side of the second mounting portion 3122 close to the first opening 313, the first mounting portion 3121 surrounds the first opening 313, the second mounting portion 3122 is arranged on the side of the first mounting portion 3121 away from the first opening 313, the first mounting portion 3121 is bonded with the heat exchange plate 32, the second mounting portion 3122 is arranged in spaced apart manner with the heat exchange plate 32 and forms a sealing groove 317 for accommodating sealing glue between the second mounting portion 3122 and the heat exchange plate 32, and the heat exchange plate 32 is provided with a first protruding rib 3211 protruding into the sealing groove 317 and separating the sealing groove 317 into a plurality of groove segments along the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122. The sealing groove 317 is an annular groove with the first end connected to the second end, and the first protruding rib 3211 is an annular protruding rib with the first end connected to the second end.

[0139] As shown in FIGS. 6 and 9, the heat exchange plate 32 comprises a first plate portion 321 and a second plate portion 322 connected together, and a heat exchange flow channel is formed between the first plate portion 321 and the second plate portion 322. The first plate portion 321 is arranged on the side of the second plate portion 322 facing the box frame 31, and the first plate portion 321 is bonded to the first mounting portion 3121. A sealing groove 317 is further formed between the first plate portion 321 and the second mounting portion 3122, and a first protruding rib 3211 is formed on the surface of the first plate portion 321 facing the sealing groove 317. A second protruding rib 3221 is formed on the surface of the second plate portion 322 facing the sealing groove 317, and the second protruding rib 3221 is inserted into the inside of the first protruding rib 3211 and is in close contact with the first protruding rib 3211. The edge of the second plate portion 322 is provided with a folded edge 3222 bent in the direction facing the first plate portion 321. In the arrangement direction of the box frame 31 and the heat exchange plate 32, the edge of the folded edge 3222 protrudes beyond the surface of the first plate portion 321, and in the arrangement direction of the first mounting portion 3121 and the second mounting portion 3122, the folded edge 3222 is arranged in a spaced-apart manner with the edge of the first plate portion 321.

[0140] As shown in FIGS. 2 and 5, the battery box 30 further comprises a first cover plate 33, and the heat exchange plate 32 is arranged between the first cover plate 33 and the box frame 31, and the box frame 31, the heat exchange plate 32 and the first cover plate 33 are sequentially connected by connecting members. The box frame 31 further comprises a second end portion 314, and the second end portion 314 and the first end portion 312 are respectively arranged at opposite ends of the box frame 31 in the vertical direction, and the second end portion 314 is arranged above the first end portion 312. The second end portion 314 is provided with a second opening 315 penetrating through and communicating with the mounting cavity 311.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the same. 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 described in the foregoing embodiments, or make equivalent replacements to some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to 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 description of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A battery device, wherein, The battery pack comprises: a battery cell; a battery box body comprising a box frame and a heat exchange plate, the box frame being enclosed to form a mounting cavity for accommodating the battery cell, the box frame comprising a first end portion, the first end portion being provided with a first opening in communication with the mounting cavity, the heat exchange plate being arranged on a side of the first end portion away from the mounting cavity and used for plugging the first opening, the heat exchange plate being in thermal connection with the battery cell; wherein the first end portion comprises a first mounting portion and a second mounting portion arranged continuously, the first mounting portion being in abutment with the heat exchange plate, the second mounting portion being arranged spaced apart from the heat exchange plate, the first mounting portion being located on a side of the second mounting portion close to the first opening or the first mounting portion being located on a side of the second mounting portion away from the first opening; the second mounting portion and the heat exchange plate form a sealing groove for accommodating sealing glue therebetween, at least one of the second mounting portion and the heat exchange plate being provided with a first protruding rib, the first protruding rib protruding inwardly toward the sealing groove and separating the sealing groove into a plurality of groove segments along an arrangement direction of the first mounting portion and the second mounting portion. The battery device according to claim 1, wherein Along the arrangement direction of the box frame and the heat exchange plate, a maximum dimension of the sealing groove is H1 and a dimension of the first protruding rib is H2, wherein H2 The battery device according to claim 2, wherein 1 / 3≤H2 / H1≤2 / 3. The battery device according to claim 2 or 3, wherein The dimension range value of H1 is 1mm≤H1≤5mm and the dimension range value of H2 is 0.5mm≤H2≤3mm. The battery device according to any one of claims 1 to 4, wherein Along the arrangement direction of the first mounting portion and the second mounting portion, a dimension of the first end portion is W1 and a dimension of the sealing groove is W2, wherein 1 / 5≤W2 / W1≤1 / 2. The battery device according to claim 5, wherein The dimension range value of W1 is 20mm≤W1≤60mm and the dimension range value of W2 is 4mm≤W2≤15mm. The battery device according to any one of claims 1 to 6, wherein The heat exchange plate comprises a first plate portion and a second plate portion connected together, the first plate portion being arranged on a side of the second plate portion facing the box frame, the first plate portion being bonded to the first mounting portion, and the first plate portion and the second plate portion forming a heat exchange flow channel therebetween. The battery device according to claim 7, wherein The first plate portion and the second mounting portion form the sealing groove therebetween, and a surface of the first plate portion facing the sealing groove is provided with the first protruding rib. The battery device according to claim 8, wherein A surface of the second plate portion facing the sealing groove is provided with a second protruding rib, the second protruding rib being inserted into an interior of the first protruding rib and being fitted to the first protruding rib. The battery device according to claim 9, wherein An edge of the second plate portion is provided with a turned edge bent in a direction facing the first plate portion, and along the arrangement direction of the box frame and the heat exchange plate, an edge of the turned edge is arranged beyond a surface of the first plate portion. The battery device according to claim 10, wherein Along the arrangement direction of the first mounting portion and the second mounting portion, the turned edge is arranged spaced apart from an edge of the first plate portion. The battery device according to any one of claims 7 to 11, wherein The second plate portion and the second mounting portion form the sealing groove therebetween, and a surface of the second plate portion facing the sealing groove is provided with the first protruding rib. The battery device according to any one of claims 1 to 12, wherein The sealing groove is a ring-shaped groove with a first end connected to a second end, and the first protruding rib is a ring-shaped protruding rib with a first end connected to a second end. The battery device according to any one of claims 1 to 12, wherein The battery box further comprises a first cover plate, the heat exchange plate is clamped between the first cover plate and the box frame, and the box frame, the heat exchange plate and the first cover plate are sequentially connected through connecting pieces. The battery device according to any one of claims 1 to 12, wherein The box frame further comprises a second end portion, the second end portion is arranged at the opposite end of the box frame respectively with the first end portion, and the second end portion is provided with a second opening penetrating and communicating with the mounting cavity. An electric device, wherein, A battery device according to any one of claims 1 to 15.

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