Battery device and electric device

Abstract

A battery device (100) and an electric device. The battery device (100) comprises a battery cell assembly (10), a beam assembly (21), and a thermal management component (30). The beam assembly (21) comprises a first mounting beam (211) and a hanging beam (210) connected to each other; the first mounting beam (211) is configured to be connected to the battery cell assembly (10); and the hanging beam (210) is configured to connect the battery cell assembly (10) to an electric device body. The thermal management component (30) comprises a body (31), a first lead-out portion (32), and a first joint (34); the body (31) is configured to exchange heat with the battery cell assembly (10); the body (31) is located on one side of the first mounting beam (211) in a first direction; the first joint (34) is located on the other side of the first mounting beam (211) in the first direction; and the first lead-out portion (32) connects the body (31) to the first joint (34). The beam assembly (21) is provided with a first clearance portion (40); and the first lead-out portion (32) passes through the first clearance portion (40). The technical solution can effectively increase the energy density of the battery device (100).

Description

Battery device and power consuming device TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and a power consuming device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] In the development of battery technology, how to improve the energy density of the battery device is a technical problem that needs to be solved in the battery technology.

[0004] SUMMARY

[0005] The present application provides a battery device and a power consuming device. The technical scheme provided by the present application can effectively improve the energy density of the battery device.

[0006] In a first aspect, some embodiments of the present application provide a battery device. The battery device includes a battery monomer assembly, a beam assembly, and a thermal management component. The beam assembly includes a first mounting beam and a mounting beam connected to each other. The first mounting beam is used to connect with the battery monomer assembly. The mounting beam is used to connect the battery monomer assembly to the body of the power consuming device. The thermal management component includes a main body, a first lead-out portion, and a first connector. The main body is used to exchange heat with the battery monomer assembly. The main body is located on one side of the first mounting beam along a first direction. The first connector is located on the other side of the first mounting beam along the first direction. The first lead-out portion connects the main body and the first connector. The beam assembly is provided with a first avoiding portion. The first lead-out portion is arranged in the first avoiding portion.

[0007] In the above scheme, the first avoiding wall is arranged on the beam assembly to allow the first lead-out portion to pass through. The first connector is arranged on the side of the first mounting beam away from the battery monomer assembly. On the one hand, when the medium leaks at the connection position of the first connector and the first lead-out portion, the phenomenon that the medium directly acts on the battery monomer assembly can be alleviated, thereby reducing the risk of corrosion or internal short circuit of the battery monomer assembly due to the medium, so that the battery device has higher reliability. On the other hand, the first connector does not occupy the space where the battery monomer assembly is located. The first lead-out portion uses the space occupied by the beam assembly itself to connect the first connector, which can reduce the space occupancy rate of the thermal management component, so that the battery has more space to accommodate the battery monomer assembly, thereby facilitating the improvement of the volume energy density of the battery device.

[0008] According to some embodiments of the present application, the first avoiding portion is arranged on the first mounting beam.

[0009] In the above scheme, by arranging the first avoiding portion on the first mounting beam, the interference of the mounting beam on the thermal management component can be reduced, thereby reducing the difficulty of assembling the thermal management component on the beam assembly, reducing the difficulty of the first lead-out portion passing through, so that the first lead-out portion can quickly connect the main body and the first joint, thereby facilitating the improvement of the manufacturing efficiency of the battery device.

[0010] According to some embodiments of the present application, the first avoiding portion is a first avoiding groove, and the first avoiding groove is recessed from the side of the first mounting beam away from the mounting beam towards the mounting beam.

[0011] In the above scheme, by arranging the first avoiding portion as a first avoiding groove, on the one hand, the difficulty of forming the first avoiding portion can be reduced, and the manufacturing efficiency of the battery device can be improved; on the other hand, the first lead-out portion can be directly arranged in the first avoiding groove through the slot of the first avoiding groove to connect the main body and the first joint, thereby facilitating the improvement of the battery manufacturing efficiency.

[0012] According to some embodiments of the present application, the first lead-out portion is integrally formed with the main body.

[0013] In the above scheme, the first lead-out portion and the main body are made by an integral forming process, which can increase the integration and manufacturing efficiency of the thermal management component, reduce the number of parts, and improve the battery manufacturing efficiency; on the other hand, the thermal management component has high structural strength, which can effectively reduce the risk of leakage of the thermal management component, thereby improving the thermal management efficiency of the battery monomer assembly by the thermal management component, and further improving the reliability of the battery.

[0014] According to some embodiments of the present application, the first avoiding portion is arranged on the mounting beam.

[0015] In the above scheme, by arranging the first avoiding portion on the mounting beam, on the one hand, the first lead-out portion can reasonably utilize the space where the mounting beam is located, and on the other hand, the influence of the first avoiding portion on the structural strength of the first mounting portion can be reduced, so that the first mounting portion can effectively fix the battery monomer assembly, and the reliability of the battery device is high.

[0016] According to some embodiments of the present application, at least part of the first lead-out portion is embedded in the mounting beam.

[0017] In the scheme, by setting at least part of the first lead-out part to be embedded in the mounting beam, on the one hand, the assembly positioning of the first lead-out part can be realized, the assembly efficiency of the first lead-out part is improved, and the battery manufacturing efficiency is further improved; on the other hand, the mounting beam can protect the first lead-out part, thereby reducing the risk of medium leakage caused by the damage of the impact structure of the first lead-out part, affecting the thermal management efficiency of the battery monomer assembly, and further improving the reliability of the battery; on the other hand, the first lead-out part can effectively utilize the space where the mounting beam is located, so that the battery structure is compact, and the volume energy density of the battery is improved.

[0018] According to some embodiments of the present application, the first lead-out part is connected to the side of the main body away from the battery monomer assembly.

[0019] In the scheme, by setting the first lead-out part to be connected to the side of the main body away from the battery monomer assembly, the first lead-out part is away from the battery monomer assembly, which can reduce the risk of mutual interference between the first lead-out part and the battery monomer assembly, resulting in high assembly difficulty of the thermal management component and affecting the manufacturing efficiency of the battery; on the other hand, the occupation of the space where the battery monomer assembly is located by the first lead-out part is reduced, which is beneficial to the improvement of the volume energy density of the battery; on the other hand, the first joint and the first lead-out part are both away from the battery monomer, thereby effectively reducing the risk of medium affecting the battery monomer assembly when medium leakage occurs in the first joint or the first lead-out part, and the reliability of the battery device is high.

[0020] According to some embodiments of the present application, the first lead-out part includes an adapter pipe and an adapter joint, the adapter joint is arranged on the side of the main body away from the battery monomer assembly, the adapter pipe connects the adapter joint and the first joint, and at least part of the adapter pipe is embedded in the mounting beam.

[0021] In the scheme, the first lead-out part includes the adapter pipe and the adapter joint which are inserted and matched with each other, the adapter pipe connects the adapter joint and the first joint, and external medium is provided to the flow channel in the main body, which can reduce the assembly difficulty of the thermal management component, improve the maintenance efficiency of the thermal management component, and reduce the maintenance cost.

[0022] According to some embodiments of the present application, in the direction of the first mounting beam pointing to the mounting beam, the adapter joint does not exceed the surface of the mounting beam away from the first mounting beam.

[0023] In the scheme, by setting the adapter joint to not exceed the surface of the mounting beam away from the first mounting beam, on the one hand, the risk of low battery space utilization caused by the exposure of the adapter joint and affecting the volume energy density of the battery can be reduced; on the other hand, the mounting beam can protect the adapter joint, thereby reducing the risk of medium leakage caused by the damage of the structure of the adapter joint caused by external impact, and the battery has high reliability.

[0024] According to some embodiments of the present application, the first lead-out portion extends along a first direction.

[0025] In the above scheme, by setting the first lead-out portion to extend along the first direction, the occupation of the first lead-out portion to the internal space of the battery can be reduced, and the efficiency of the first lead-out portion to pass through the beam assembly can be improved, on the one hand, the problem of high risk of leakage caused by the oversize of the first lead-out portion can be improved, on the other hand, the structure of the thermal management component can be compact, and the improvement of the volume energy density of the battery can be facilitated.

[0026] According to some embodiments of the present application, the first mounting beam extends along a second direction, the first mounting beam and the mounting beam are arranged along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0027] According to some embodiments of the present application, the mounting beam and the first mounting beam are integrally formed, or the mounting beam and the first mounting beam are independent structures.

[0028] In the above scheme, in some embodiments, the mounting beam and the first mounting beam are integrally formed by the integrally forming process, so that the mounting beam and the first mounting beam have high structural strength, which can improve the structural reliability of the battery and facilitate the stable mounting of the battery on the body of the electric device. In some embodiments, by setting the mounting beam and the first mounting beam as independent structures, the manufacturing difficulty of the beam assembly can be reduced, and the maintenance cost of the beam assembly can be reduced.

[0029] According to some embodiments of the present application, the main body comprises a first plate body and a second plate body, and the first plate body and the second plate body are stacked and jointly form a first flow channel for accommodating a medium.

[0030] In the above scheme, the main body structure is simple and easy to process and manufacture. The main body comprises a first plate body and a second plate body which are stacked, and the first plate body and the second plate body jointly define a first flow channel for accommodating a medium, so as to realize heat exchange with the battery monomer assembly, so that the battery is at a suitable temperature to have good charge and discharge performance.

[0031] According to some embodiments of the present application, along the third direction, the mounting beam is formed with a mounting hole on the side away from the mounting beam, and the third direction is parallel to the arrangement direction of the mounting beam and the mounting beam.

[0032] In the above scheme, by setting the mounting hole on the side of the mounting beam away from the mounting beam, the battery can be mounted on the body of the electric device.

[0033] According to some embodiments of the present application, the battery device comprises a box body, the box body has an accommodating cavity inside, the accommodating cavity is used for accommodating the battery monomer assembly, the box body comprises a beam assembly, the first mounting beam is located in the accommodating cavity, and the first joint is located outside the accommodating cavity.

[0034] In the scheme, the battery comprises a box body, and the battery cell assembly is located in the box body, so that the influence of external substances on the battery cell assembly can be reduced, and the reliability of the battery is high. The first joint is arranged outside the box body, and when medium leakage occurs at the connection between the first joint and the first lead-out part or the connection between the first joint and the external structure, the phenomenon of the medium entering the accommodation cavity can be alleviated, the influence of the medium on the battery cell assembly is reduced, the risk that the battery cell assembly is corroded or short-circuited is reduced, and the reliability of the battery is improved.

[0035] According to some embodiments of the present application, the box body further comprises a first wall, and the first joint is located on a side of the first wall away from the accommodation cavity, and the first lead-out part penetrates the first wall.

[0036] In the scheme, by arranging the first joint on the side of the first wall away from the accommodation cavity, the part of the thermal management component that is prone to leakage can be effectively arranged outside the accommodation cavity, so that the risk of corrosion or short circuit of the battery cell assembly caused by the medium is effectively reduced, and the reliability of the battery device is high.

[0037] According to some embodiments of the present application, the first wall has a second avoiding part penetrating in the first direction, the first lead-out part penetrates the second avoiding part, and an adhesive is arranged between the inner wall of the second avoiding part and the first lead-out part.

[0038] In the scheme, by arranging the second avoiding part for the first lead-out part to penetrate on the first wall, the occupation of the first lead-out part to the internal space of the box body is reduced, the structure of the thermal management component is simplified, and the volume energy density of the battery is improved. By arranging the adhesive between the inner wall of the second avoiding part and the first lead-out part, the connection stability between the thermal management component and the box body can be effectively improved, the battery structure is stable and high, and the reliability of the battery is improved.

[0039] According to some embodiments of the present application, the battery device further comprises an electrical connector connected with the battery cell assembly, the first wall is formed with a first through hole, and the electrical connector is mounted in the first through hole. The first wall and the first mounting beam are arranged in the first direction, and part of the electrical connector is located between the first wall and the first mounting beam.

[0040] In the scheme, the electrical connector is mounted in the first through hole, so that the electrical connector can be conveniently connected with the external member, the electrical exchange between the battery and the body of the electrical device is realized, and by arranging part of the electrical connector between the first wall and the first mounting beam, the risk of mutual interference between the electrical connector and the battery cell assembly can be effectively reduced, the assembly difficulty of the battery device is reduced, and the manufacturing efficiency of the battery device is improved.

[0041] According to some embodiments of the present application, the beam assembly has a mounting hole penetrating in a third direction, the main body is connected with the beam assembly and covers the mounting hole, and the third direction is parallel to the arrangement direction of the mounting beam and the mounting beam.

[0042] In the above scheme, by connecting the main body of the thermal management component to the beam assembly and covering the mounting hole, on the one hand, the thermal management component and the beam assembly can be integrated, the structural strength of the battery device is improved, the influence of external impact on the battery device is reduced, and the reliability of the battery device is high; on the other hand, the thermal management component can be used instead of the bottom plate, thereby reducing the number of parts of the battery device, thereby facilitating the improvement of the mass energy density of the battery device.

[0043] According to some embodiments of the present application, the mounting hole comprises a first hole section and a second hole section arranged along the third direction, the second hole section is away from the accommodation cavity relative to the second hole section, the hole wall surface of the first hole section and the hole wall surface of the second hole section are connected by a step surface, the step surface is arranged to face the accommodation cavity, and the main body is located in the first hole section and abuts against the step surface.

[0044] In the above scheme, the mounting hole comprises a first hole section and a second hole section arranged along the third direction, the hole wall surface of the first hole section and the hole wall surface of the second hole section are connected by a step surface, and the step surface is arranged to face the accommodation cavity in the third direction, wherein by arranging the main body of the thermal management component in the first hole section and abutting against the step surface, on the one hand, the thermal management component can be easily installed in the mounting hole, which is conducive to reducing the assembly difficulty between the thermal management component and the beam assembly, and on the other hand, the step surface can also limit and position the thermal management component in the third direction, which is conducive to improving the stability and reliability of the thermal management component installed on the beam assembly.

[0045] According to some embodiments of the present application, the beam assembly further comprises a support beam, the support beam is arranged in the second hole section and divides the second hole section into at least two sub-through holes, and the side of the main body away from the battery monomer assembly is connected to the support beam along the third direction.

[0046] In the above scheme, by arranging the support beam in the mounting hole, on the one hand, the structural strength of the beam assembly can be provided, so that the beam assembly can effectively bear the gravity of the battery monomer assembly and stably mount the battery on the body of the electric device; on the other hand, the support beam can also support the thermal management component to some extent, which is conducive to reducing the risk of deformation of the thermal management component during use, and the support beam can also protect the thermal management component to some extent, which is conducive to alleviating the phenomenon of direct collision between the thermal management component and the external environment.

[0047] According to some embodiments of the present application, the beam assembly further comprises a second mounting beam, the second mounting beam is connected to the battery monomer assembly, the second mounting beam is arranged apart from the first mounting beam along the first direction, and the battery monomer assembly is located between the first mounting beam and the second mounting beam.

[0048] In the above scheme, the first mounting beam and the second mounting beam are arranged in the first direction, which can play a role of assembling and positioning the battery monomer assembly, and can reduce the difficulty of assembling the battery monomer assembly in the box. On the other hand, the battery monomer assembly can be effectively fixed on the beam assembly, so that the battery monomer assembly, the mounting beam and the mounting beam are integrated, which can improve the structural strength of the battery device and be stably mounted on the power device body.

[0049] According to some embodiments of the present application, the box includes a first box body and a second box body, and the first box body and the second box body are covered with each other and jointly define a containing cavity. The first box body includes a beam assembly.

[0050] According to some embodiments of the present application, the first box body further includes a first wall and a second wall, and the beam assembly connects the first wall and the second wall. The first wall and the second wall are arranged in the first direction. The second box body includes a third wall, a fourth wall and a fifth wall, and the third wall connects the fourth wall and the fifth wall. The fourth wall and the fifth wall are arranged in the second direction. The third wall and the beam assembly are arranged in the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0051] In the above scheme, the first box body and the second box body form a structure similar to "U". On the one hand, the first box body and the second box body can jointly define an assembly cavity for containing the battery monomer after being covered with each other. On the other hand, the manufacturing difficulty of the first box body and the second box body can be reduced, and the subsequent maintenance of the battery monomer assembly contained in the box can be facilitated, which can reduce the difficulty of the later maintenance of the battery device.

[0052] According to some embodiments of the present application, the fourth wall and the fifth wall are connected with the beam assembly on two sides in the second direction, respectively.

[0053] In the above scheme, the fourth wall and the fifth wall are connected with the beam assembly on two sides in the second direction, respectively. The connection surfaces between the fourth wall and the beam assembly and the connection surfaces between the fifth wall and the beam assembly occupy less space in the second direction, so as to improve the space utilization of the battery in the second direction, so that the box can contain more battery monomer assemblies and improve the volume energy density of the battery device.

[0054] In a second aspect, some embodiments of the present application also provide a power device, which includes the battery device provided in the first aspect, and the battery device is used to provide electric energy.

[0055] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application, 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, characteristics 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

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0057] Fig. 1 is a structural schematic diagram of a vehicle in some embodiments of the present application;

[0058] Fig. 2 is a perspective exploded view of a battery device in some embodiments of the present application;

[0059] Fig. 3 is a structural schematic diagram of a beam assembly and a thermal management component in some embodiments of the present application;

[0060] Fig. 4 is an internal schematic diagram of a partial structure of a beam assembly in some embodiments of the present application;

[0061] Fig. 5 is a perspective exploded view of a beam assembly and a thermal management component in some embodiments of the present application;

[0062] Fig. 6 is an enlarged view of A in Fig. 5;

[0063] Fig. 7 is a schematic diagram of a thermal management component in some embodiments of the present application;

[0064] Fig. 8 is a perspective exploded view of a beam assembly and a thermal management component in some other embodiments of the present application;

[0065] Fig. 9 is an internal schematic diagram of a partial structure of a battery device in some other embodiments of the present application;

[0066] Fig. 10 is an enlarged view of B in Fig. 9;

[0067] Fig. 11 is a perspective exploded view of a thermal management component in some embodiments of the present application;

[0068] Fig. 12 is a schematic diagram of a partial structure of a first box body and a thermal management component in some embodiments of the present application;

[0069] Fig. 13 is an enlarged view of C in Fig. 5;

[0070] Fig. 14 is a schematic diagram of a second box body in some embodiments of the present application.

[0071] Fig. legend: 1000-vehicle; 100-battery device; 200-controller; 300-motor;

[0072] 10 - battery cell assembly; 11 - battery cell; 20 - case; 20a - first case body; 20b - second case body; 21 - beam assembly; 210 - mounting beam; 2100 - first opening; 2101 - second opening; 2102 - third surface; 2103 - mounting hole; 211 - first mounting beam; 2110 - substructure; 212 - second mounting beam; 213 - mounting hole; 2130 - first hole section; 2131 - second hole section; 2132 - stepped surface; 214 - support beam; 22 - first wall; 23 - second wall; 24 - third wall; 25 - fourth wall; 26 - fifth wall; 30 - thermal management component; 31 - main body; 31a - first surface; 31b - second surface; 310 - first plate body; 311 - second plate body; 312 - first flow channel; 32 - first lead-out portion; 32a - first part; 32b - second part; 320 - adapter pipe; 321 - adapter; 33 - second lead-out portion; 34 - first joint; 35 - second joint; 40 - first avoidance portion; 50 - second avoidance portion; 60 - electrical connector; x - first direction; y - second direction; z - third direction. DETAILED DESCRIPTION

[0073] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0074] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.

[0075] In the present application, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments.

[0076] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connection", "attach" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0077] The term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0078] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0079] "Multiple" appearing in the present application means two or more (including two).

[0080] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0081] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0082] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0083] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material arranged on at least one surface of the positive electrode current collector.

[0084] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector.

[0085] In some embodiments, the electrode assembly further comprises a separator disposed between the positive electrode and the negative electrode.

[0086] In some embodiments, the separator is a separator film. The separator film can be of various types, and any known porous structure separator film with good chemical stability and mechanical stability can be used.

[0087] In some embodiments, the battery cell further comprises an electrolyte, which functions to conduct ions between the positive electrode and the negative electrode. The electrolyte can be in a liquid state, a gel state, or a solid state. Among them, the liquid electrolyte comprises an electrolyte salt and a solvent.

[0088] In some embodiments, the electrode assembly is in a jelly-roll structure. The positive electrode sheet and the negative electrode sheet are wound into the jelly-roll structure.

[0089] In some embodiments, the electrode assembly is in a stack structure.

[0090] For example, a plurality of positive electrode sheets and a plurality of negative electrode sheets can be provided, and the plurality of positive electrode sheets and the plurality of negative electrode sheets are alternately stacked.

[0091] For example, a plurality of positive electrode sheets can be provided, and the negative electrode sheet is folded to form a plurality of folded segments which are stacked. One positive electrode sheet is clamped between adjacent folded segments.

[0092] For example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded segments which are stacked.

[0093] For example, a plurality of separators can be provided, and each of the plurality of separators is disposed between any adjacent positive electrode sheet or negative electrode sheet.

[0094] For example, the separators can be continuously provided, and each of the separators is disposed between any adjacent positive electrode sheet or negative electrode sheet by folding or winding.

[0095] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a multi-prism shape.

[0096] In some embodiments, the electrode assembly is provided with a tab. The tab can guide the current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0097] In some embodiments, the battery cell can comprise a housing. The housing is used to encapsulate the electrode assembly and other components such as the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0098] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shaped battery cell, the prismatic battery cell including, but not limited to, a square cell, a blade cell, a multi-prismatic battery cell, such as a hexagonal battery cell, etc.

[0099] 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 cells connected in series, in parallel, or in a mixed connection through a busbar component.

[0100] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0101] In some embodiments, the battery apparatus can be a battery pack including a box and one or more battery cell assemblies housed in the box.

[0102] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the box by fixing the battery module in the box.

[0103] As an example, the battery cell assembly can also be housed in the box by directly fixing a plurality of battery cells in the box.

[0104] As an example, the box can include a first box and a second box. The first box and the second box are fastened so that an enclosed space is formed inside the box to accommodate the battery cell assembly. Here, the enclosed means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0105] As an example, the box can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame so that an enclosed space is formed inside the box to accommodate the battery cell assembly.

[0106] As an example, the box can be part of the chassis structure of a vehicle. For example, the top cover of the box can be at least part of the floor of the vehicle, or the frame of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0107] In some embodiments, the battery device can refer to an energy storage device, which includes a box body, at least one side of the box body is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0108] For example, the battery device includes a beam assembly and a battery monomer assembly. The beam assembly can include a mounting beam and a hanging beam arranged with each other. The mounting beam is used to mount and fix the battery monomer assembly. The hanging beam is used to hang the battery on the body of the power utilization device, so that the battery supplies power to the body of the power utilization device. In some embodiments, the beam assembly can be a partial structural member of the box body.

[0109] The battery has the advantages of high energy density, small environmental pollution, large power density, long service life, wide adaptation range, and small self-discharge coefficient, and is an important part of the development of new energy today. The development of battery technology needs to consider many design factors, such as reliability, cycle life, discharge capacity, and charge-discharge rate. In addition, the energy density of the battery device also needs to be considered.

[0110] In the battery technology, the battery monomer assembly in the battery device will generate a large amount of heat in the continuous charging and discharging process. In the related technology, in order to reduce the safety hidden danger caused by the internal temperature rise of the battery device during use, a heat management component for heat exchange with the battery monomer assembly is usually provided to adjust the temperature of the battery monomer, thereby relieving the phenomenon of temperature rise in the battery. However, the connection position of the joint of the heat management component of the battery device in the related technology and the pipeline conveying the heat exchange medium is prone to medium leakage during use, and the leaked medium will contact the multiple battery monomers or other components in the battery monomer assembly in the box body, thereby easily causing corrosion of the battery monomers or short circuit risk between the multiple battery monomers, resulting in low use reliability of the battery device. At the same time, the joint also occupies the space required by the battery monomer assembly, which is not conducive to the improvement of the volume energy density of the battery device.

[0111] In view of this, in order to improve the problem of low battery volume energy density caused by the space occupied by the joint, and low battery reliability caused by the leakage at the connection position of the joint and the pipeline, some embodiments of the present application provide a battery device. The battery device includes a battery monomer assembly, a beam assembly, and a heat management component. The beam assembly includes a first mounting beam and a hanging beam connected with each other. The first mounting beam is used to connect with the battery monomer assembly. The hanging beam is used to connect the battery monomer assembly to the body of the power utilization device. The heat management component includes a main body, a first lead-out portion, and a first joint. The main body is used for heat exchange with the battery monomer assembly. The main body is located on one side of the first mounting beam along a first direction x. The first joint is located on the other side of the first mounting beam along the first direction x. The first lead-out portion connects the main body and the first joint. The beam assembly is provided with a first avoiding portion. The first lead-out portion is arranged in the first avoiding portion.

[0112] In the battery with the above structure, by setting the first avoiding wall on the beam assembly for the first lead-out part to pass through, the first joint is arranged on the side of the first mounting beam away from the battery monomer group. On one hand, when the medium leakage occurs at the connection position of the first joint and the first lead-out part, the phenomenon that the medium directly acts on the battery monomer group can be alleviated, so as to reduce the risk of corrosion or internal short circuit of the battery monomer assembly due to the medium, so that the battery device has higher reliability. On the other hand, the first joint does not occupy the space of the battery monomer assembly, and the first lead-out part uses the space occupied by the beam assembly itself to connect the first joint, so as to reduce the space occupancy rate of the thermal management component, so that the battery has more space to accommodate the battery monomer assembly, so as to facilitate the improvement of the volume energy density of the battery device.

[0113] The battery device disclosed in the embodiments of the present application can be used in, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. A power supply system composed of the battery device disclosed in the present application and the like can be used in the electric device, so that the short circuit problem of the battery device in use can be alleviated, the use reliability of the battery device is improved, and the volume energy density of the battery device is improved, and the working time of the electric device is improved.

[0114] The embodiments of the present application provide an electric device using the battery device as a power supply. The electric device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft and the like. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric aircraft toy and the like. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft and the like.

[0115] The following embodiments are described by taking a vehicle 1000 as an example for convenience of description.

[0116] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 1000 in 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 automobile, a hybrid automobile, or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom of the vehicle 1000, or at the head of the vehicle 1000, or at the tail of the vehicle 1000. The battery device 100 can be used to supply power for the vehicle 1000, for example, as an operating power source or a usage power source of the vehicle 1000, etc. The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 being used to control the battery device 100 to supply power for the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation, and driving.

[0117] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source or a usage power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0118] Some embodiments of the present application provide a battery device 100, please refer to FIG. 2-FIG. 4, FIG. 2 is a perspective exploded view of the battery device 100 in some embodiments of the present application, FIG. 3 is a structural schematic diagram of a beam assembly 21 and a thermal management component 30 in some embodiments of the present application, and FIG. 4 is an internal schematic diagram of a partial structure of the beam assembly 21 in some embodiments of the present application.

[0119] The battery device 100 includes a battery monomer assembly 10, a beam assembly 21, and a thermal management component 30. The beam assembly 21 includes a first mounting beam 211 and a hanging beam 210 connected to each other, the first mounting beam 211 being used to connect with the battery monomer assembly 10, and the hanging beam 210 being used to connect the battery monomer assembly 10 to a body of a power consumption device. The thermal management component 30 includes a main body 31, a first lead-out portion 32, and a first joint 34, the main body 31 being used to exchange heat with the battery monomer assembly 10, the main body 31 being located at one side of the first mounting beam 211 along a first direction x, the first joint 34 being located at the other side of the first mounting beam 211 along the first direction x, and the first lead-out portion 32 connecting the main body 31 and the first joint 34. The beam assembly 21 is provided with a first avoiding portion 40, and the first lead-out portion 32 is arranged in the first avoiding portion 40.

[0120] In some embodiments, the beam assembly 21 can be used to support the weight of the battery monomer assembly 10, the thermal management component 30, and other structures of the battery, and the beam assembly 21 can be used to assemble the battery device 100 on the body of the power consumption device, so as to transmit the overall weight of the battery to the body of the power consumption device.

[0121] The beam assembly 21 comprises a first mounting beam 211 and a hanging beam 210 connected to each other, the first mounting beam 211 is used to connect the battery monomer assembly 10, and the weight of the battery monomer assembly 10 can be transmitted to the hanging beam 210, and the hanging beam 210 is used to be connected with the body of the electric device, so as to transmit the overall weight of the battery to the body of the electric device. Exemplarily, the first mounting beam 211 and the hanging beam 210 are arranged along the direction of gravity, the first mounting beam 211 is located above the hanging beam 210, the battery monomer assembly 10 is arranged on the first mounting beam 211 by welding, bonding, threaded connection or other connection manners, and the lower surface of the hanging beam 210 is formed with a hanging hole 2103, and the hanging beam 210 is hung on the bracket of the vehicle 1000 body through the cooperation of the bolt and the hanging hole 2103.

[0122] In some embodiments, the beam assembly 21 can be an integrally formed structure, and the first mounting beam 211 and the hanging beam 210 are prepared by an integrally forming process, such as an extrusion forming process, a die casting forming process, a casting process or other processes. In other embodiments, the beam assembly 21 can be an integral structure connected with a plurality of structural members, for example, the first mounting beam 211 and the hanging beam 210 are separate structures, and the connection relationship between the two includes but is not limited to welding, riveting, clamping, threaded connection or other connection relationships.

[0123] In some embodiments, the beam assembly 21 can be a frame structure used to support the battery monomer assembly 10 and hang the battery on the body of the electric device.

[0124] In some embodiments, the beam assembly 21 can be part of the structure of the case 20. For example, the battery includes a case 20 for providing a receiving cavity for the battery cell assembly 10, and the case 20 can have various structures. Alternatively, referring to FIG. 2, the case 20 can include a first case body 20a and a second case body 20b, the first case body 20a and the second case body 20b are overlapped with each other, and the first case body 20a and the second case body 20b together define a receiving cavity for receiving the battery cell assembly 10. The beam assembly 21 is part of the structure of the first case body 20a. Alternatively, the first case body 20a and the second case body 20b can have various structures. For example, in FIG. 2, the first case body 20a and the second case body 20b are both "U" shaped structures, so that the first case body 20a and the second case body 20b are overlapped with each other to define the receiving cavity. Of course, in other embodiments, the first case body 20a can also be a hollow structure with one end open, and the second case body 20b can be a plate-shaped structure, the second case body 20b is overlapped with the open side of the first case body 20a to make the first case body 20a and the second case body 20b together define the receiving cavity; the first case body 20a and the second case body 20b can also be hollow structures with one side open, and the open side of the first case body 20a is overlapped with the open side of the second case body 20b. Of course, the case 20 formed by the first case body 20a and the second case body 20b can have various shapes, such as a cylinder, a cuboid or a square, etc. For example, in FIG. 2, the case 20 formed by the first case body 20a and the second case body 20b has a cuboid shape.

[0125] In the battery device 100, the battery cell assembly 10 arranged in the case 20 can be one or multiple. Each battery cell assembly 10 can include one or multiple battery cells 11, and when including multiple battery cells 11, the multiple battery cells 11 can be connected in series, in parallel or in a mixed manner, and the mixed manner means that the multiple battery cells 11 are connected in series and in parallel.

[0126] When the battery cell assembly 10 arranged in the case 20 is multiple, the multiple battery cell assemblies 10 can be connected in series, in parallel or in a mixed manner, and the mixed manner means that the multiple battery cell assemblies 10 are connected in series and in parallel. In some embodiments, the battery device 100 can further include other structures, for example, the battery can further include a current collecting component for connecting the multiple battery cell assemblies 10 to realize the electrical connection between the multiple battery cell assemblies 10. The battery device 100 can further include a thermal management component 30, which can exchange heat with the battery cell assembly 10 to adjust the temperature of the battery cell assembly 10. The battery device 100 can further include a connector capable of electrically connecting the battery cell assembly 10 with the outside to realize the input and output of electrical energy.

[0127] Each battery cell 11 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. Optionally, the shape of the battery cell 11 can be various, such as a cuboid, a cylinder, a prism, or other shapes. For example, in FIG. 2, the battery cell 11 is in a cuboid structure.

[0128] In some embodiments, the battery cell assembly 10 includes a plurality of battery cells 11 arranged in a stack and end plates arranged at both ends of the plurality of battery cells 11 in the stacking direction of the battery cells 11, cooperating with the side plates to fix the plurality of battery cells 11 as a whole. In these embodiments, the first mounting beam 211 can be connected with the end plate, and the connection relationship between the first mounting beam 211 and the end plate includes, but is not limited to, bonding, welding, clamping, threaded connection, or other connection relationships. Generally, the first mounting beam 211 includes the function of fixing the battery cell 11, and also includes the function of limiting the position of the battery cell 11 and reducing the impact of external impact on the battery cell 11. Please refer to FIGS. 2 and 3, along the first direction x, the battery cell assembly 10 is located on one side of the first mounting beam 211, which can limit the position of the battery cell assembly 10 in the first direction x and reduce the impact of the impact from the other side of the first mounting beam 211 on the battery cell assembly 10. Optionally, the beam assembly 21 includes the first mounting beam 211 and the second mounting beam 212, which are arranged in the first direction x. The first mounting beam 211 is connected with the end plate on one side of the battery cell assembly 10, and the second mounting beam 212 is connected with the end plate on the other side of the battery cell assembly 10.

[0129] The thermal management component 30 is used for heat exchange with the battery cell assembly 10 to regulate the temperature of the battery cell 11 in the battery cell assembly 10, so that the battery cell 11 is in a suitable temperature range to have good charge and discharge performance. Generally, the thermal management component 30 has a flow channel inside for containing a medium, so that the medium can exchange heat with the battery cell assembly 10 to manage the temperature of the battery cell 11. Optionally, the medium can be a fluid, which can be a liquid or a gas. For example, the medium can be a gas, such as air or hydrogen, and the heat exchange medium can also be a liquid, such as water, a saltwater solution, or liquid nitrogen.

[0130] In some embodiments, the thermal management component 30 has joints that can connect the thermal management component 30 with an external medium circulation device, exemplarily, the thermal management component 30 comprises a first joint 34 and a second joint 35, the first joint 34 and the second joint 35 are connected with a pipe of a water tank of the vehicle 1000 through the joints, the water tank of the vehicle 1000 provides a medium to the thermal management component 30 through the first joint 34 or the second joint 35, the medium flows back to the water tank through the second joint 35 or the first joint 34, so that the medium circulates.

[0131] In some embodiments of the present application, the thermal management component 30 comprises a main body 31 and an extension part, which can be a first extension part 32 for connecting the main body 31 and the first joint 34 and a second extension part 33 for connecting the main body 31 and the second joint 35. In some embodiments of the present application, the first extension part 32 and the first joint 34 are mainly described, and the features of the second extension part 33 and the first joint 34 can be understood by referring to the features of the first extension part 32 and the first joint 34.

[0132] Along the first direction x, the main body 31 and the battery monomer assembly 10 are arranged on the same side relative to the first mounting beam 211, exemplarily, the main body 31 can be arranged below the battery monomer assembly 10, and has the functions of supporting the battery monomer assembly 10 and adjusting the temperature of the battery monomer assembly 10. Optionally, the main body 31 is connected with the beam assembly 21 and located between the first mounting beam 211 and the second mounting beam 212, the main body 31 can be regarded as the bottom of the first tank body 20a, supporting the battery monomer assembly 10, and the medium in the main body 31 can exchange heat with the battery monomer assembly 10 to adjust the temperature of the battery monomer assembly 10. Optionally, in some embodiments in which the beam assembly 21 is part of the structure of the first tank body 20a, the thermal management component 30 can be integrated with the beam assembly 21 and used as the bottom of the first tank body 20a together, supporting the battery monomer assembly 10 together, and the main body 31 of the thermal management component 30 is located in the accommodation cavity.

[0133] Along the first direction x, the joints and the main body 31 are respectively located on the two sides of the first mounting beam 211, which can be understood as that the main body 31 and the battery monomer assembly 10 are located on the inner side of the first mounting beam 211, and the joints (such as the first joint 34 and the second joint 35) are located on the outer side of the first mounting beam 211, or can be understood as that the main body 31 and the battery monomer assembly 10 are located inside the tank body 20, that is, in the accommodation cavity, and the joints (such as the first joint 34 and the second joint 35) are located outside the tank body 20, that is, outside the accommodation cavity.

[0134] The first lead-out portion 32 is a structural member connecting the main body 31 and the first connector 34, and is used for the medium to enter the main body 31 from the first connector 34 or for the medium to flow out of the main body 31 to the first connector 34. Exemplarily, the first lead-out portion 32 is a plate-shaped structure, and the size of the first lead-out portion 32 in the second direction y is smaller than the size of the main body 31, for example, the first lead-out portion 32 can be in the shape of a tongue. The first direction x and the second direction y are perpendicular to each other, and optionally, the plane formed by the first direction x and the second direction y can be the support plane of the beam assembly 21 to the battery monomer assembly 10, and the first direction x and the second direction y can be perpendicular to the direction of gravity, respectively, and the first mounting beam 211 and the hanging beam 210 can be arranged along the third direction z, and the third direction z can be parallel to the direction of gravity. Exemplarily, the first lead-out portion 32 can be tubular, one end of the first lead-out portion 32 is connected to the main body 31, and the other end of the first lead-out portion 32 is connected to the first connector 34.

[0135] The second lead-out portion 33 is a structural member connecting the main body 31 and the second connector 35, and is used for the medium to enter the main body 31 from the second connector 35 or for the medium to flow out of the main body 31 to the second connector 35. Exemplarily, the first lead-out portion 32 is a plate-shaped structure or the first lead-out portion 32 can be tubular, one end of the first lead-out portion 32 is connected to the main body 31, and the other end of the first lead-out portion 32 is connected to the second connector 35.

[0136] In some embodiments, the first lead-out portion 32, the first connector 34 and the main body 31 can be integrally formed. In other embodiments, the first lead-out portion 32 and the first connector 34 can be an integral structure, and the first lead-out portion 32 and the main body 31 can be separate structures, and the structures can be connected to each other by welding, clamping, inserting, riveting, bonding or threaded connection. In other embodiments, the first lead-out portion 32, the first connector 34 and the main body 31 are separate structures, and the structures can be connected to each other by welding, clamping, inserting, riveting, bonding or threaded connection.

[0137] The “the beam assembly 21 is provided with the first avoiding portion 40, and the first lead-out portion 32 is arranged in the first avoiding portion 40” can be understood as that the first avoiding portion 40 is arranged on the beam assembly 21 to provide space for the first lead-out portion 32 to avoid the first lead-out portion 32, so that part of the first lead-out portion 32 is connected to the main body 31 on one side of the first mounting beam 211, part of the first lead-out portion 32 is arranged in the first avoiding portion 40 of the first mounting beam 211, and the remaining part of the first lead-out portion 32 can be arranged on the other side of the first mounting beam 211 to connect the first connector 34.

[0138] Exemplarily, when the beam assembly 21 and the first lead-out portion 32 are observed along the second direction y, part of the first lead-out portion 32 can be blocked by the beam assembly 21, that is, in the same projection plane perpendicular to the second direction y, the orthographic projection of the first lead-out portion 32 and the orthographic projection of the beam assembly 21 at least partially overlap.

[0139] Optionally, the first avoiding part 40 can be arranged on the first mounting beam 211. For example, the first mounting beam 211 is provided with the first avoiding part 40. The first avoiding part 40 can be a groove structure recessed towards the mounting beam 210, or the first avoiding part 40 can be a through hole structure formed on the first mounting beam 211, which is used for the first lead-out part 32 to pass through.

[0140] Optionally, the first avoiding part 40 can be arranged on the mounting beam 210. For example, the mounting beam 210 is provided with the first avoiding part 40. The first avoiding part 40 can be a through hole structure penetrating the mounting beam 210, which is used for the first lead-out part 32 to pass through, or the mounting beam 210 and the first mounting beam 211 are in a separate structure. The surface of the mounting beam 210 facing the first mounting beam 211 is recessed towards the direction away from the first mounting beam 211 to form a groove structure, which is used for the first lead-out part 32 to pass through.

[0141] Optionally, the first avoiding part 40 is partially formed on the first mounting beam 211 and partially formed on the mounting beam 210. For example, the first avoiding part 40 is a hole structure formed by the first mounting beam 211 and the mounting beam 210, or part of the hole structure is located on the first mounting beam 211 and part of the hole structure is located on the mounting beam 210.

[0142] Optionally, the beam assembly 21 can further be provided with other avoiding structures for the second lead-out part 33 to pass through to connect the second joint 35 and the main body 31.

[0143] In the above scheme, the first avoiding wall is arranged on the beam assembly 21 for the first lead-out part 32 to pass through, so that the first joint 34 is arranged on the side of the first mounting beam 211 away from the group of battery monomers 11. On the one hand, when the medium leaks at the connection position of the first joint 34 and the first lead-out part 32, the phenomenon that the medium directly acts on the group of battery monomers 11 can be alleviated, so as to reduce the risk of corrosion or internal short circuit of the battery monomer assembly 10 due to the medium, so that the battery device 100 has higher reliability. On the other hand, the first joint 34 does not occupy the space where the battery monomer assembly 10 is located, and the first lead-out part 32 uses the space occupied by the beam assembly 21 itself to connect the first joint 34, which can reduce the space occupancy rate of the thermal management component 30, so that the battery has more space to accommodate the battery monomer assembly 10, which is conducive to the improvement of the volume energy density of the battery device 100.

[0144] According to some embodiments of the present application, referring to FIG. 5 and FIG. 6, FIG. 5 is a perspective exploded view of the beam assembly 21 and the thermal management component 30 in some embodiments of the present application, and FIG. 6 is an enlarged view of A in FIG. 5. The first avoiding part 40 is arranged on the first mounting beam 211.

[0145] In some embodiments, the first avoiding part 40 is arranged on the first mounting beam 211, so that the first leading-out part 32 can utilize the space of the first mounting beam 211 in the third direction z.

[0146] In some embodiments, the first avoiding part 40 can be a groove-shaped structure or a through-hole-shaped structure arranged on the first mounting beam 211. For example, the first avoiding part 40 is a through groove-shaped structure, which is connected to both sides of the first mounting beam 211 to allow the first leading-out part 32 to pass through.

[0147] In some embodiments, the first leading-out part 32 and the first mounting beam 211 at least partially overlap in the same projection plane perpendicular to the second direction y.

[0148] In some embodiments, the third direction z is the direction of gravity, the first mounting beam 211 is located above the mounting beam 210, the first joint 34 and the main body 31 are located on opposite sides of the first mounting beam 211 along the first direction x, respectively, and the first joint 34 and the main body 31 are both located above the mounting beam 210. The first leading-out part 32 can extend in a horizontal direction and pass through the first avoiding part 40 arranged on the first mounting beam 211 to connect the main body 31 and the first joint 34.

[0149] In the above scheme, by arranging the first avoiding part 40 on the first mounting beam 211, the interference of the mounting beam 210 with the thermal management component 30 can be reduced, thereby reducing the difficulty of assembling the thermal management component 30 on the beam assembly 21 and reducing the difficulty of the first leading-out part 32 to pass through. Thus, the first leading-out part 32 can quickly connect the main body 31 and the first joint 34, thereby facilitating the improvement of the manufacturing efficiency of the battery device 100.

[0150] According to some embodiments of the present application, referring to FIG. 6, the first avoiding part 40 is a first avoiding groove, which is recessed from the side of the first mounting beam 211 away from the mounting beam 210 towards the mounting beam 210.

[0151] The first avoiding part 40 is a first avoiding groove, and the groove opening of the first avoiding groove can be arranged towards the side away from the mounting beam 210 along the third direction z. The first avoiding groove penetrates the first mounting beam 211 along the opposite sides of the first direction x. For example, the first avoiding groove penetrates along the first direction x, or the first avoiding groove penetrates the first mounting beam 211 along a direction inclined to the first direction x.

[0152] In some embodiments, the size of the slot of the first avoiding slot can be slightly larger than the size of the first lead-out portion 32 corresponding to the first avoiding slot, so as to allow the first lead-out portion 32 to be arranged in the first avoiding slot by the first mounting beam 211 pointing to the direction of the mounting beam 210. For example, referring to FIG. 7, which is a schematic view of the thermal management component 30 in some embodiments of the present application. The first lead-out portion 32 includes a first portion 32a and a second portion 32b. In the first direction x, the first portion 32a is located on the side of the mounting beam away from the group of battery monomers 11, and the second portion 32b is connected to the main body 31 and the first portion 32a. The maximum size of the first portion 32a in the second direction y is larger than the maximum size of the second portion 32b in the second direction y, that is, a necked portion is formed between the first portion 32a and the main body 31, and the position of the necked portion corresponds to the second portion 32b. The second portion 32b is arranged in the first avoiding slot. In this way, the size of the first avoiding slot in the second direction y is small, so as to reduce the impact of the first avoiding slot on the structural strength of the first mounting beam 211, and the first portion 32a with a larger size can effectively arrange the first joint 34.

[0153] Optionally, the first mounting beam 211 can include a plurality of sub-structures 2110 arranged at intervals, and the gap between any two adjacent sub-structures 2110 can form the first avoiding slot.

[0154] Optionally, the first avoiding slot can be formed by slotting the complete first mounting beam 211 by using an extrusion process, a slotting process or other processes.

[0155] In the above scheme, by arranging the first avoiding portion 40 as the first avoiding slot, on the one hand, the forming difficulty of the first avoiding portion 40 can be reduced, and the manufacturing efficiency of the battery device 100 can be improved; on the other hand, the first lead-out portion 32 can be directly arranged in the first avoiding slot by the slot of the first avoiding slot to connect the main body 31 and the first joint 34, thereby facilitating the improvement of the battery manufacturing efficiency.

[0156] According to some embodiments of the present application, referring to FIG. 7, the first lead-out portion 32 is integrally formed with the main body 31.

[0157] In some embodiments, the first lead-out portion 32 and the main body 31 are integrally formed structural members. Optionally, the thermal management component 30 can include a body and a joint. The body includes two laminated plates, which include parts of the main body 31 and the first lead-out portion 32. The two plates are laminated to jointly constitute the main body 31 and the first lead-out portion 32. The plates can be made by pressure casting, extrusion or casting process.

[0158] In some embodiments, along the third direction z, a side of the first lead-out portion 32 away from the mounting beam 210 is formed with an opening, and the first joint 34 is arranged in the opening to communicate the flow channel inside the main body 31 through the first lead-out portion 32.

[0159] In the above scheme, the first lead-out portion 32 and the main body 31 are made by an integral molding process, which can make the thermal management component 30 have high integration, high manufacturing efficiency, and reduce the number of parts, thereby improving the manufacturing efficiency of the battery; on the other hand, the thermal management component 30 can have high structural strength, which can effectively reduce the risk of leakage of the thermal management component 30, thereby improving the thermal management efficiency of the thermal management component 30 on the battery monomer assembly 10, and further improving the reliability of the battery.

[0160] According to some embodiments of the present application, referring to FIGS. 8-10, FIG. 8 is a perspective exploded view of the beam assembly 21 and the thermal management component 30 according to some embodiments of the present application, FIG. 9 is an internal schematic view of a partial structure of the battery device 100 according to some embodiments of the present application, and FIG. 10 is an enlarged view of B in FIG. 9. The first avoiding portion 40 is arranged on the mounting beam 210.

[0161] In some embodiments, arranging the first avoiding portion 40 on the mounting beam 210 can make the first lead-out portion 32 utilize the space of the mounting beam 210 in the third direction z.

[0162] In some embodiments, the first avoiding portion 40 can be a slot-shaped structure or a through-hole-shaped structure arranged on the mounting beam 210. For example, the first avoiding portion 40 is a through-hole-shaped structure that penetrates the mounting beam 210 to allow the first lead-out portion 32 to pass through.

[0163] In some embodiments, the first lead-out portion 32 and the mounting beam 210 at least partially overlap in the same projection plane perpendicular to the second direction y.

[0164] In the above scheme, by arranging the first avoiding portion 40 on the mounting beam 210, on the one hand, the first lead-out portion 32 can reasonably utilize the space of the mounting beam 210, and on the other hand, the influence of the first avoiding portion 40 on the structural strength of the first mounting portion can be reduced, so that the first mounting portion can effectively fix the battery monomer assembly 10, and the reliability of the battery device 100 is high.

[0165] According to some embodiments of the present application, at least part of the first lead-out portion 32 is embedded in the mounting beam 210.

[0166] In some embodiments, the first avoiding part 40 can be a first avoiding hole capable of accommodating at least part of the first leading-out part 32. Exemplarily, one end of the first leading-out part 32 is located outside the first avoiding hole to be connected with the main body 31, part of the first leading-out part 32 is located inside the first avoiding hole, and the other end of the first leading-out part 32 is located outside the first avoiding hole to be connected with the first connector 34.

[0167] Optionally, the first avoiding hole is formed inside the mounting beam 210, along the first direction x, a first opening 2100 is formed on the side of the mounting beam 210 facing the battery monomer assembly 10, the first opening 2100 is communicated with the first avoiding hole to allow the end of the first leading-out part 32 to pass out to be connected with the main body 31; along the third direction z, a second opening 2101 is formed on the surface of the mounting beam 210 facing the first mounting beam 211, the second opening 2101 is communicated with the first avoiding hole to allow the end of the first leading-out part 32 to pass out to be connected with the first connector 34.

[0168] In the above scheme, by setting at least part of the first leading-out part 32 to be embedded in the mounting beam 210, on the one hand, the assembly and positioning of the first leading-out part 32 can be realized, the assembly efficiency of the first leading-out part 32 is improved, and the battery manufacturing efficiency is further improved; on the other hand, the mounting beam 210 can protect the first leading-out part 32, thereby reducing the damage of the first leading-out part 32 caused by the impact structure, reducing the medium leakage, affecting the thermal management efficiency of the battery monomer assembly 10, and further improving the reliability of the battery; on the other hand, the first leading-out part 32 can effectively utilize the space where the mounting beam 210 is located, so that the battery structure is compact, and the volume energy density of the battery is improved.

[0169] According to some embodiments of the present application, referring to FIGS. 8 and 9, the first leading-out part 32 is connected with the main body 31 away from the battery monomer assembly 10.

[0170] In some embodiments, along the third direction z, the main body 31 has a first surface 31a and a second surface 31b opposite to each other, the first surface 31a can be used to support the battery monomer assembly 10, and the second surface 31b is the surface of the main body 31 away from the battery monomer assembly 10, and the first leading-out part 32 can be connected with the second surface 31b.

[0171] Optionally, in another embodiment, under the condition that the thickness of the main body 31 meets the condition, the first leading-out part 32 can also be connected to the outer circumferential surface of the main body 31, that is, the connection position of the first leading-out part 32 is between the first surface 31a and the second surface 31b.

[0172] In the above scheme, by arranging the first lead-out portion 32 to be connected to the side of the main body 31 away from the battery monomer assembly 10, the first lead-out portion 32 is arranged away from the battery monomer 11 group, which can reduce the mutual interference between the first lead-out portion 32 and the battery monomer 11 group, thereby reducing the difficulty of assembling the thermal management component 30 and the risk of affecting the battery manufacturing efficiency. On the other hand, the first lead-out portion 32 can reduce the occupation of the space where the battery monomer assembly 10 is located, thereby facilitating the improvement of the volume energy density of the battery. In addition, the first joint 34 and the first lead-out portion 32 are both arranged away from the battery monomer 11, so that when the first joint 34 or the first lead-out portion 32 leaks medium, the risk of the medium affecting the battery monomer assembly 10 can be effectively reduced, thereby improving the reliability of the battery device 100.

[0173] According to some embodiments of the present application, as shown in FIGS. 8 and 10, the first lead-out portion 32 includes an adapter pipe 320 and an adapter joint 321. The adapter joint 321 is arranged on the side of the main body 31 away from the battery monomer assembly 10. The adapter pipe 320 connects the adapter joint 321 and the first joint 34. At least part of the adapter pipe 320 is embedded in the mounting beam 210.

[0174] In some embodiments, the first lead-out portion 32 includes an adapter pipe 320 and an adapter joint 321. Both the adapter pipe 320 and the adapter joint 321 are provided with flow channels to realize the input or output of the medium. The adapter pipe 320 is in the form of a pipe column. Optionally, the adapter pipe 320 can be in the form of a round pipe, a square pipe, or a thin plate pipe, etc.

[0175] In some embodiments, the main part of the adapter pipe 320 can be located in the first avoiding hole. One end of the adapter pipe 320 can be connected to the first joint 34, and the other end can be connected to the adapter joint 321. The adapter joint 321 can be a structural member arranged on the second surface 31b of the main body 31.

[0176] In some embodiments, the adapter pipe 320 and the hole wall of the first avoiding hole can be fixed by bonding, welding, clamping, or other methods. Alternatively, in some embodiments, the adapter pipe 320 and the first avoiding hole are not connected, and the adapter pipe 320 can be directly pulled out of the first avoiding hole.

[0177] The connection relationship between the adapter pipe 320 and the adapter joint 321 includes but is not limited to welding, bonding, plugging, threaded connection, or other connection methods.

[0178] The connection relationship between the adapter pipe 320 and the first joint 34 includes but is not limited to welding, bonding, plugging, threaded connection, or other connection methods, or the adapter pipe 320 and the first joint 34 are integrally formed.

[0179] The connection relationship between the adapter 321 and the main body 31 includes, but is not limited to, welding, bonding, plugging, threaded connection or other connection modes, or the adapter 321 and the main body 31 are integrally formed.

[0180] Exemplarily, the second surface 31b of the main body 31 is convexly provided with the adapter 321 in a direction away from the first surface 31a, the opening of the adapter 321 is arranged towards the first joint 34 along the first direction x, the first avoiding hole extends along the first direction x, the adapter pipe 320 is arranged in the first avoiding groove, one end of the adapter pipe 320 is plugged into the opening of the adapter 321, and the other end of the adapter pipe 320 is bent along the third direction z and integrally formed into the first joint 34.

[0181] In the above scheme, the first lead-out part 32 includes the adapter pipe 320 and the adapter 321 which are plugged into each other, the adapter pipe 320 connects the adapter 321 and the first joint 34, and external medium is provided to the flow channel in the main body 31, which can reduce the assembly difficulty of the thermal management component 30, improve the maintenance efficiency of the thermal management component 30, and reduce the maintenance cost.

[0182] According to some other embodiments of the present application, referring to FIG. 10, along the direction in which the first mounting beam 211 points to the mounting beam 210, the adapter 321 does not exceed the surface of the mounting beam 210 away from the first mounting beam 211.

[0183] In some embodiments, along the third direction z, the mounting beam 210 has a third surface 2102 away from the first mounting beam 211, and the adapter 321 is located on the side of the main body 31 away from the battery monomer 11 and does not exceed the third surface 2102. When the third direction z is the direction of gravity, the third surface 2102 can be the lowest surface of the battery device 100, that is, the adapter 321 does not exceed the lowest surface of the battery device 100.

[0184] Optionally, the adapter 321 can be between the third surface 2102 and the second surface 31b, or the end of the adapter 321 away from the second surface 31b is flush with the third surface 2102.

[0185] In the above scheme, by arranging the adapter 321 not to exceed the surface of the mounting beam 210 away from the first mounting beam 211, on the one hand, the risk that the adapter 321 is exposed to cause low battery space utilization and affect the volume energy density of the battery can be reduced, and on the other hand, the mounting beam 210 can protect the adapter 321, reduce the risk that the structure of the adapter 321 is damaged due to external impact to cause medium leakage, and make the battery have higher reliability.

[0186] According to some embodiments of the present application, the first lead-out part 32 extends along the first direction x.

[0187] In some embodiments, the first lead-out portion 32 extends along the first direction x, i.e., the long axis of the first lead-out portion 32 is parallel to the first direction x. Optionally, referring to FIGS. 5 and 7, the first lead-out portion 32 is tongue-shaped, and the length direction thereof or the direction in which it penetrates the first avoiding groove is the first direction x. Optionally, referring to FIG. 8, the first lead-out portion 32 comprises an adapter pipe 320, and the axis of the adapter pipe 320 can be the first direction x.

[0188] In the above scheme, by setting the first lead-out portion 32 to extend along the first direction x, the occupation of the first lead-out portion 32 to the internal space of the battery can be reduced, and the efficiency of the first lead-out portion 32 to penetrate the beam assembly 21 can be improved, which on one hand can improve the problem of high risk of leakage caused by excessively large size of the first lead-out portion 32, and on the other hand can make the thermal management component 30 compact in structure, which is conducive to the improvement of the volume energy density of the battery.

[0189] In other embodiments, the first lead-out portion 32 extends along a direction oblique to the first direction x, i.e., the long axis of the first lead-out portion 32 is oblique to the first direction x.

[0190] According to some embodiments of the present application, referring to FIG. 5, the first mounting beam 211 extends along the second direction y, and the first mounting beam 211 and the mounting beam 210 are arranged along the third direction z, and the first direction x, the second direction y and the third direction z are perpendicular to each other.

[0191] In some embodiments, the external contour of the battery device 100 can be cuboid-shaped, the third direction z can be the height direction of the battery device 100, the first direction x can be the length direction of the battery device 100, and the second direction y can be the width direction of the battery device 100.

[0192] Exemplarily, the beam assembly 21 comprises the first mounting beam 211 and the second mounting beam 212, the first mounting beam 211 and the second mounting beam 212 are arranged at intervals along the first direction x, the first mounting beam 211 and the second mounting beam 212 respectively extend along the second direction y, the battery monomer assembly 10 is arranged between the first mounting beam 211 and the second mounting beam 212, and the two end plates of the battery monomer assembly 10 are respectively connected with the first mounting beam 211 and the second mounting beam 212; along the third direction z, the mounting beam 210 is located on the side of the first mounting beam 211 and the second mounting beam 212 away from the battery monomer assembly 10.

[0193] According to some embodiments of the present application, the mounting beam 210 is integrally formed with the first mounting beam 211, or the mounting beam 210 and the first mounting beam 211 are separate structures.

[0194] In some embodiments, the beam assembly 21 can be a one-piece structure, or parts of the beam assembly 21 can be a one-piece structure, or the beam assembly 21 can be formed by connecting individual parts.

[0195] Optionally, the mounting beam 210 and the first mounting beam 211 are manufactured by a one-piece forming process, such as an extrusion process, a die casting process, or a casting process.

[0196] Optionally, the mounting beam 210 and the first mounting beam 211 are separate structures, and the connection relationship between the two includes but is not limited to bonding, welding, riveting, clamping, threaded connection, or other connection relationships.

[0197] In the above scheme, in some embodiments, the mounting beam 210 and the first mounting beam 211 are manufactured by a one-piece forming process, so that the mounting beam 210 and the first mounting beam 211 have high structural strength, which can improve the structural reliability of the battery and facilitate the stable mounting of the battery on the power device body. In some embodiments, by setting the mounting beam 210 and the first mounting beam 211 as separate structures, the manufacturing difficulty of the beam assembly 21 can be reduced, and the maintenance cost of the beam assembly 21 can be reduced.

[0198] According to some embodiments of the present application, please refer to FIG. 11, which is a perspective exploded view of the thermal management component 30 in some embodiments of the present application. The main body 31 includes a first plate body 310 and a second plate body 311, and the first plate body 310 and the second plate body 311 are stacked and jointly form a first flow channel 312 for accommodating a medium.

[0199] In some embodiments, the first plate body 310 and the second plate body 311 are stacked and connected along the third direction z, and the connection relationship between the first plate body 310 and the second plate body 311 includes but is not limited to welding, bonding, threaded connection, etc. In some embodiments, in order to reduce the risk of medium leakage, the connection part of the first plate body 310 and the second plate body 311 can be provided with a sealing member.

[0200] In some embodiments, the material of the first plate body 310 and the second plate body 311 can be the same or different. Optionally, the material of the first plate body 310 and the second plate body 311 is aluminum alloy, aluminum, stainless steel, or other materials.

[0201] The first plate body 310 and the second plate body 311 jointly define a first flow channel 312, which can accommodate a medium for heat exchange with the battery cell assembly 10. In some embodiments, a second flow channel is formed in the first lead-out portion 32 and communicates with the first flow channel 312, and a third flow channel is formed in the second lead-out portion 33 and communicates with the first flow channel 312. Optionally, the medium in the external pipeline can enter the first flow channel 312 through the first joint 34, the second flow channel, and be discharged through the third flow channel and the second joint 35.

[0202] In some embodiments, along the third direction z, the first plate has a first plane facing the second plate body 311, and the second plate body 311 is provided with a groove on the side facing the first plate body 310, and the groove wall surface and the first plane jointly define the first flow channel 312. The groove wall surface and the first plane jointly define the first flow channel 312, that is, the first plane covers the groove opening, so that the first flow channel 312 is formed between the first plane and the groove wall surface, that is, the internal part of the heat management component 30 forms the first flow channel 312 in the area corresponding to the groove. The first plane is a flat and continuous surface, and the first plane is perpendicular to the third direction z.

[0203] In some embodiments, the groove on the second plate body 311 can be formed by a later forming process by stamping, or the second plate body 311 is manufactured by die casting or casting to form the groove synchronously.

[0204] In the embodiment in which the first lead-out portion 32 and the main body 31 are integrally formed, a part of the first plate body 310 and a part of the second plate body 311 form the main body 31, a part of the first plate body 310 and a part of the second plate body 311 form the first lead-out portion 32, and the groove on the second plate body 311 forms the second flow channel by covering the second plate body 311.

[0205] It should be noted that the structure of the main body 31 is not limited to this, and in other embodiments, the main body 31 can also have other structures, for example, the second plate body 311 can have a first plane facing the first plate body 310, and the first plate body 310 can be provided with a groove on the side facing the second plate body 311, and the groove wall surface and the first plane jointly define the first flow channel 312; or the first plate body 310 and the second plate body 311 can be provided with grooves on the side facing each other, and the grooves of the first plate body 310 and the second plate body 311 are correspondingly arranged in the third direction z, so that the groove wall surface of the groove of the first plate body 310 and the groove wall surface of the groove of the second plate body 311 jointly define the first flow channel 312.

[0206] In some embodiments, along the third direction z, the second plate body 311 is formed with a protrusion on a side of the second plate body 311 away from the first plate body 310 and corresponding to a position of the groove. For example, the groove formed on the side of the second plate body 311 facing the first plate body 310 is formed by a stamping process to form the groove on the side of the second plate body 311 facing the first plate body 310 and the protrusion on the side of the second plate body 311 away from the first plate body 310 and corresponding to the position of the groove. Of course, the processing method of the groove formed on the side of the second plate body 311 facing the first plate body 310 is not limited to this. In other embodiments, the groove formed on the side of the second plate body 311 facing the first plate body 310 can also be formed by a casting, milling or etching process.

[0207] In some embodiments, along the third direction z, the second plate body 311 is located on a side of the first plate body 310 away from the battery cell assembly 10. That is, along the third direction z, the second plate body 311 and the battery cell assembly 10 are respectively located on two sides of the first plate body 310.

[0208] In the above scheme, the main body 31 is simple in structure and easy to process and manufacture. The main body 31 includes the first plate body 310 and the second plate body 311 arranged in layers, and the first plate body 310 and the second plate body 311 together define the first flow channel 312 for accommodating the medium to achieve heat exchange with the battery cell assembly 10, so that the battery is at a suitable temperature to have good charge and discharge performance.

[0209] According to some embodiments of the present application, referring to FIG. 4, along the third direction z, the mounting beam 210 is formed with a mounting hole 2103 on a side of the mounting beam 210 away from the mounting beam, and the third direction z is parallel to the arrangement direction of the mounting beam 210 and the mounting beam.

[0210] In some embodiments, the mounting beam 210 is formed with a mounting hole 2103 on a side of the mounting beam 210 away from the mounting beam for cooperating with a mounting member to connect the mounting beam 210 with the body of the electric device.

[0211] For example, the mounting hole 2103 is a threaded hole formed on the side of the mounting beam 210 away from the mounting beam, and the mounting member can include a threaded member.

[0212] In some embodiments, the number of mounting holes 2103 can be multiple, and the multiple mounting holes 2103 are arranged at intervals along the second direction y.

[0213] In the above scheme, the mounting hole 2103 is arranged on the side of the mounting beam 210 away from the mounting beam to facilitate mounting the battery on the body of the electric device.

[0214] According to some embodiments of the present application, the battery device 100 comprises a box 20, the box 20 has a containing cavity inside, the containing cavity is used for containing the battery monomer assembly 10, the box 20 comprises a beam assembly 21, the first mounting beam 211 is located inside the containing cavity, and the first joint 34 is located outside the containing cavity.

[0215] In some embodiments, the battery monomer assembly 10 is located in a closed space, for example, the battery device 100 comprises a box 20, the box 20 has a containing cavity inside, and the battery monomer assembly 10 is arranged in the containing cavity to reduce the influence of external substances on the battery monomer assembly 10.

[0216] In some embodiments, the beam assembly 21 is a part of the structure of the box 20, and the first mounting beam 211 of the beam assembly 21 is located in the containing cavity to be connected with the battery monomer assembly 10.

[0217] Optionally, the box 20 comprises a first box body 20a and a second box body 20b, the first box body 20a and the second box body 20b are overlapped with each other, and the first box body 20a and the second box body 20b jointly define the containing cavity for containing the battery monomer assembly 10. The beam assembly 21 is part of the structure of the first box body 20a and can be used as the bottom wall of the box 20.

[0218] The "first joint 34 is located outside the containing cavity" can be understood as that the connection position of the external pipeline with the first joint 34 is located outside the containing cavity to be away from the battery monomer assembly 10. For example, the first box body 20a comprises the beam assembly 21, a first wall 22 and a second wall 23, the first wall 22 and the second wall 23 are arranged on the beam assembly 21 in a first direction x, and the beam assembly 21, the first wall 22 and the second wall 23 are connected with the second box body 20b to form the containing cavity. In the first direction x, one side of the first wall 22 facing the battery monomer assembly 10 is an inner side, and the other side of the first wall 22 away from the battery monomer assembly 10 is an outer side, the first joint 34 is arranged on the outer side of the first wall 22, and the first joint 34 and the battery monomer assembly 10 can be isolated by the first wall 22 in the first direction x.

[0219] In the above scheme, the battery comprises the box 20, and the battery monomer assembly 10 is located in the box 20, which can reduce the influence of external substances on the battery monomer assembly 10 and improve the reliability of the battery. The first joint 34 is arranged outside the box 20, which can alleviate the phenomenon that the medium enters the containing cavity when the medium leakage occurs at the connection position of the first joint 34 and the first lead-out part 32 or at the connection position of the first joint 34 and the external structure, reduce the influence of the medium on the battery monomer assembly 10, and reduce the risk that the battery monomer assembly 10 is corroded or short-circuited, thereby improving the reliability of the battery.

[0220] According to some embodiments of the present application, referring to FIG. 12, FIG. 12 is a schematic diagram of a partial structure of the first box body 20a and the thermal management component 30 according to some embodiments of the present application. The box body 20 further comprises a first wall 22, and the first joint 34 is located on a side of the first wall 22 facing away from the accommodation cavity, and the first lead-out portion 32 penetrates the first wall 22.

[0221] The first wall 22 can be part of the structure of the box body 20, and the first wall 22 is part of the structure surrounding the accommodation cavity. In some embodiments, the first wall 22 is part of the first box body 20a. In other embodiments, the second wall 23 can also be part of the second box body 20b.

[0222] Optionally, the first wall 22 is part of the first box body 20a, and the first wall 22 is connected with the beam assembly 21. The connection relationship between the first wall 22 and the beam assembly 21 includes but is not limited to bonding, welding, riveting, threaded connection or other connection relationship, or the first box body 20a is an integral structure formed by pressure casting, casting or extrusion process.

[0223] In the first direction x, the side of the first wall 22 facing the battery monomer assembly 10 is the inner side, and the inner side of the first wall 22 is used to surround the accommodation cavity. The side of the first wall 22 facing away from the battery monomer assembly 10 is the outer side, and the first joint 34 is arranged on the outer side of the first wall 22, and the first joint 34 and the battery monomer assembly 10 can be isolated by the first wall 22 in the first direction x. The first lead-out portion 32 can penetrate the first wall 22 to connect the first joint 34 located on the outer side of the first wall 22 and the main body 31 located on the inner side of the first wall 22.

[0224] In some embodiments, in the first direction x, the first joint 34 and the second joint 35 can be located on the same side of the first wall 22, that is, the second lead-out portion 33 can also penetrate the first wall 22. In other embodiments, the first box body 20a comprises the first wall 22 and the second wall 23 arranged at intervals in the first direction x, the first joint 34 is located on the outer side of the first wall 22, the second joint 35 is located on the outer side of the second wall 23, the first lead-out portion 32 penetrates the first wall 22, and the second lead-out portion 33 penetrates the second wall 23.

[0225] In some embodiments, "the first lead-out portion 32 penetrates the first wall 22" can be understood as that part of the first lead-out portion 32 is located on the outer side of the first wall 22, and part of the first lead-out portion 32 is located on the inner side of the first wall 22.

[0226] Optionally, the first lead-out portion 32 is arranged through the first wall 22 in various forms, for example, the first wall 22 is formed with a through hole, a through slot, a notch, etc. for the first lead-out portion 32 to pass through; or part of the beam assembly 21 connected with the first wall 22 can be formed with a groove to form a gap with the first wall 22 to allow the first lead-out portion 32 to pass through.

[0227] In the above scheme, by arranging the first joint 34 on the side of the first wall 22 away from the accommodation cavity, the part of the thermal management component 30 that is prone to leakage can be effectively arranged outside the accommodation cavity, thereby effectively reducing the risk of corrosion or short circuit of the battery monomer assembly 10 due to the medium, so that the reliability of the battery device 100 is high.

[0228] According to some embodiments of the present application, the first wall 22 has a second avoiding portion 50 penetrating in the first direction x, the first lead-out portion 32 is arranged through the second avoiding portion 50, and an adhesive is arranged between the inner wall of the second avoiding portion 50 and the first lead-out portion 32.

[0229] In some embodiments, the first wall 22 is formed with a second avoiding portion 50 for accommodating and avoiding the first lead-out portion 32, so that part of the first lead-out portion 32 can pass through the first wall 22 to be connected with the first joint 34.

[0230] In some embodiments, the second avoiding portion 50 can include a second avoiding slot, which can be formed on the surface of the first wall 22 facing the beam assembly 21. Exemplarily, the first mounting beam 211 is provided with a first avoiding slot for accommodating the second part 32b of the first lead-out portion 32, and the second avoiding slot is used to accommodate the first part 32a of the first lead-out portion 32. When assembling the thermal management component 30, the first wall 22 and the beam assembly 21, the thermal management component 30 can be assembled on the beam assembly 21 so that the second part 32b of the first lead-out portion 32 is arranged in the first avoiding slot, and then the first wall 22 is assembled on the beam assembly 21 so that the second avoiding slot of the first wall 22 accommodates the first part 32a of the first lead-out portion 32.

[0231] In some embodiments, the connection relationship between the first wall 22 and the first lead-out portion 32 includes but is not limited to adhesion, welding, threaded connection, etc.

[0232] In some embodiments, an adhesive can be arranged between the inner wall of the first avoiding portion 40 and the first lead-out portion 32 to connect the first wall 22 and the first lead-out portion 32. The adhesive includes but is not limited to double-sided tape, dried adhesive or other materials with adhesion.

[0233] Optionally, in some embodiments, the first lead-out portion 32 has a second flow channel inside, for example, the first lead-out portion 32 is formed by laminating a first body 310 and a second body, the first body and the second body are laminated and arranged to form the second flow channel. An adhesive can be arranged between the second avoiding groove and the part of the first lead-out portion 32 corresponding to the second flow channel. The groove wall of the second avoiding groove and the rest of the first lead-out portion 32 can be connected by welding.

[0234] In the above scheme, by arranging the second avoiding portion 50 on the first wall 22 for the first lead-out portion 32 to pass through, the occupation of the first lead-out portion 32 to the internal space of the box body 20 can be reduced, the structure of the thermal management component 30 can be simplified, and the improvement of the battery volume energy density is facilitated. The adhesive arranged between the inner wall of the second avoiding portion 50 and the first lead-out portion 32 can effectively improve the connection stability between the thermal management component 30 and the box body 20, so that the battery structure is stable and high, and the improvement of the battery reliability is facilitated.

[0235] According to some embodiments of the present application, referring to FIGS. 2, 3 and 12, the battery device 100 further comprises an electrical connector 60 connected with the battery monomer assembly 10, the first wall 22 is formed with a first through hole, and the electrical connector 60 is mounted in the first through hole. The first wall 22 and the first mounting beam 211 are arranged at intervals along the first direction x, and part of the electrical connector 60 is located between the first wall 22 and the first mounting beam 211.

[0236] The electrical connector 60 can include an electrical plug or an electrical socket for connecting the battery monomer assembly 10 and the electrical device body to realize the input or output of electrical energy between the battery and the electrical device body.

[0237] The first wall 22 is formed with a first through hole, and the electrical connector 60 is mounted in the first through hole and closes the first through hole. In some embodiments, a sealing structure can be arranged between the electrical connector 60 and the hole wall of the first through hole. In some embodiments, the electrical connector 60 is connected with the first wall 22, and the connection relationship therebetween includes but is not limited to welding, bonding, clamping or threaded connection, etc.

[0238] In some embodiments, along the first direction x, the first wall 22 and the first mounting beam 211 are arranged at intervals, the battery monomer assembly 10 is located on the side of the first mounting beam 211 away from the first wall 22, and part of the structure of the electrical connector 60 can be located between the first wall 22 and the first mounting beam 211 to connect the battery monomer assembly 10.

[0239] In the above scheme, the electric connector 60 is installed in the first through hole, so that the electric connector 60 can be conveniently connected with external components, the electrical exchange between the battery and the body of the electric device is realized, and by arranging part of the electric connector 60 between the first wall 22 and the first mounting beam 211, the risk of mutual interference between the electric connector 60 and the battery monomer assembly 10 can be effectively reduced, the assembly difficulty of the battery device 100 is reduced, and the manufacturing efficiency of the battery device 100 is improved.

[0240] In some embodiments, the first wall 22 can also be provided with other structural members of the battery device 100. For example, a pressure relief mechanism can be arranged on the first wall 22, which can be used to release the pressure inside the box 20.

[0241] According to some embodiments of the present application, referring to FIG. 5, the beam assembly 21 has a mounting hole 213 extending through in the third direction z, and the main body 31 is connected to the beam assembly 21 and covers the mounting hole 213, and the third direction z is parallel to the arrangement direction of the mounting beam 210 and the mounting beam.

[0242] The beam assembly 21 is provided with the mounting hole 213 extending through the beam assembly 21 in the third direction z, that is, the mounting hole 213 extends in the third direction z, and the two ends of the mounting hole 213 respectively extend through the surfaces on both sides of the beam assembly 21. Alternatively, the beam assembly 21 can be a frame structure, and the middle part of the beam assembly 21 is formed with the mounting hole 213 extending through in the third direction z.

[0243] The thermal management component 30 can be connected to the beam assembly 21, and the main body 31 of the thermal management component 30 can be connected to the beam assembly 21 and cover the mounting hole 213, so that the thermal management component 30 and the beam assembly 21 can be integrated.

[0244] The connection structure between the main body 31 and the beam assembly 21 can be various, for example, the main body 31 can be connected to the beam assembly 21 by welding connection, bonding, clamping or bolt connection.

[0245] In the above scheme, by connecting the main body 31 of the thermal management component 30 to the beam assembly 21 and covering the mounting hole 213, on the one hand, the thermal management component 30 and the beam assembly 21 can be integrated, the structural strength of the battery device 100 is improved, the influence of external impact on the battery device 100 is reduced, and the reliability of the battery device 100 is high; on the other hand, the thermal management component 30 can be used instead of the bottom plate, the number of parts of the battery device 100 is reduced, and the mass energy density of the battery device 100 is improved.

[0246] According to some embodiments of the present application, referring to FIG. 13, which is an enlarged view of position C in FIG. 5. The mounting hole 213 includes a first hole section 2130 and a second hole section 2131 arranged along the third direction z, the second hole section 2131 is away from the accommodating cavity relative to the second hole section 2131, the hole wall surface of the first hole section 2130 and the hole wall surface of the second hole section 2131 are connected by a step surface 2132, the step surface 2132 is arranged facing the accommodating cavity, the main body 31 is located in the first hole section 2130, and the main body 31 abuts against the step surface 2132.

[0247] The mounting hole 213 includes a first hole section 2130 and a second hole section 2131 arranged along the third direction z, the first hole section 2130 is located on the side of the second hole section 2131 close to the accommodating cavity, that is, the mounting hole 213 is a stepped hole structure, and the mounting hole 213 includes at least two hole sections, which are the first hole section 2130 and the second hole section 2131, and the first hole section 2130 is closer to the battery monomer assembly 10 in the third direction z than the second hole section 2131.

[0248] The hole wall surface of the first hole section 2130 and the hole wall surface of the second hole section 2131 are connected by a step surface 2132, the step surface 2132 is arranged facing the accommodating cavity, that is, the caliber of the first hole section 2130 is smaller than the caliber of the second hole section 2131.

[0249] In some embodiments, the shapes of the first hole section 2130 and the second hole section 2131 correspond to the shape of the main body 31, when the main body 31 is rectangular, the first hole section 2130 and the second hole section 2131 can be rectangular respectively, and the size of the first hole section 2130 is smaller than the size of the second hole section 2131 to form the step surface 2132 between the first hole section 2130 and the second hole section 2131.

[0250] In some embodiments, the main body 31 is connected with the step surface 2132, and the connection relationship therebetween includes but is not limited to bonding, welding, riveting or threaded connection and the like.

[0251] In some embodiments, the main body 31 can be embedded in the first hole section 2130, and the surface of the main body 31 facing the battery monomer assembly 10 can be flush with the surface of the first hole section 2130 away from the second hole section 2131.

[0252] Exemplarily, in FIG. 13, the mounting hole 213 includes a first hole segment 2130 and a second hole segment 2131 connected to each other, that is, the mounting hole 213 of the stepped hole structure is provided with only two hole segments, and the two hole segments are the first hole segment 2130 and the second hole segment 2131, respectively. Of course, in other embodiments, the number of hole segments of the mounting hole 213 of the stepped hole structure can also be three, four, five, or six, etc. For example, in some embodiments, the mounting hole 213 can also include other hole segments located on the side of the first hole segment 2130 away from the second hole segment 2131 or other hole segments located on the side of the second hole segment 2131 away from the first hole segment 2130.

[0253] It should be noted that in some embodiments in which the first avoiding portion 40 is arranged on the mounting beam 210, the adapter 321 can be arranged on the second surface 31b of the main body 31, and the adapter 321 can be located in the second hole segment 2131.

[0254] In the above scheme, the mounting hole 213 includes the first hole segment 2130 and the second hole segment 2131 arranged in the third direction z, the hole wall surface of the first hole segment 2130 and the hole wall surface of the second hole segment 2131 are connected through the stepped surface 2132, and the stepped surface 2132 faces the accommodating cavity in the third direction z, wherein by arranging the main body 31 of the heat management component 30 in the first hole segment 2130 and abutting on the stepped surface 2132, on the one hand, it is convenient to install the heat management component 30 in the mounting hole 213, which is conducive to reducing the assembly difficulty between the heat management component 30 and the beam assembly 21, and on the other hand, the stepped surface 2132 can also play a certain limiting and positioning role on the heat management component 30 in the third direction z, which is conducive to improving the stability and reliability of the heat management component 30 installed on the beam assembly 21.

[0255] According to some embodiments of the present application, referring to FIG. 5 and FIG. 13, the beam assembly 21 further includes a support beam 214 arranged in the second hole segment 2131 and separating the second hole segment 2131 into at least two sub-holes, and the side of the main body 31 away from the battery monomer assembly 10 is connected with the support beam 214 in the third direction z.

[0256] In some embodiments, the mounting beam 210 can be a frame beam structure which is formed with the mounting hole 213, and the surface of the mounting beam 210 is provided with a first mounting beam 211 and a second mounting beam 212. The first mounting beam 211 and the second mounting beam 212 are arranged at intervals along the first direction x, and the support beam 214 extends along the second direction y, and the opposite ends thereof are connected with the opposite parts of the mounting beam 210 along the second direction y, respectively.

[0257] In some embodiments, the mounting beam 210 can be arranged in the second hole segment 2131 and connected with the hole wall of the second hole segment 2131 to divide the mounting hole 213 into two sub-through holes.

[0258] In some embodiments, the connection relationship between the mounting beam 210 and the hole wall of the second hole segment 2131 includes but is not limited to bonding, welding, riveting, or threaded connection. Alternatively, the beam assembly 21 is an integrally formed structure, and the support beam 214 is formed synchronously when the beam assembly 21 is manufactured.

[0259] The support beam 214 is located on the side of the main body 31 away from the battery monomer assembly 10 and abuts against the main body 31, that is, the main body 31 is located on the side of the support beam 214 facing the battery monomer assembly 10, and the main body 31 and the support beam 214 abut against each other along the third direction z.

[0260] Alternatively, the structure and shape of the support beam 214 can be various, and exemplarily, in FIG. 5, the support beam 214 is a plate-shaped structure. It can extend along the first direction x or along the second direction y.

[0261] Alternatively, the number of support beams 214 arranged in the mounting hole 213 can be one or multiple, and exemplarily, in FIG. 5, only one support beam 214 is arranged in the mounting hole 213, and of course, in other embodiments, the support beam 214 arranged in the mounting hole 213 can also be two, three, four, or five, etc. It should be noted that in the embodiment in which the number of support beams 214 arranged in the mounting hole 213 is multiple, the multiple support beams 214 can be a structure intersecting and connecting with each other, or the multiple support beams 214 can be a structure arranged at intervals along the first direction x or along the second direction y.

[0262] In the above scheme, by arranging the support beam 214 in the mounting hole 213, on the one hand, the structural strength of the beam assembly 21 can be provided, so that the beam assembly 21 can effectively bear the gravity of the battery monomer assembly 10 and stably mount the battery on the body of the electric device; on the other hand, the support beam 214 can also play a certain supporting role on the heat management component 30, which is conducive to reducing the risk of deformation of the heat management component 30 in the use process, and the support beam 214 can also play a certain protection role on the heat management component 30, which is conducive to alleviating the phenomenon that the heat management component 30 directly collides with the external environment.

[0263] According to some embodiments of the present application, the beam assembly 21 further comprises a second mounting beam 212, the second mounting beam 212 is connected with the battery monomer assembly 10, and the second mounting beam 212 is arranged at intervals with the first mounting beam 211 along the first direction x, and the battery monomer assembly 10 is located between the first mounting beam 211 and the second mounting beam 212.

[0264] In some embodiments, the beam assembly 21 further comprises a second mounting beam 212, which can be a beam structure extending along the second direction y, and the second mounting beam 212 is spaced apart from the first mounting beam 211 along the first direction x. The first mounting beam 211 and the second mounting beam 212 can be used to position and connect the battery cell assembly 10 along the first direction x. The connection relationship between the second mounting beam 212 and the battery cell assembly 10 can include, but is not limited to, bonding, welding, riveting, threaded connection or other connection relationship.

[0265] In the above scheme, the first mounting beam 211 and the second mounting beam 212 are spaced apart along the first direction x, which can play a role of assembling and positioning the battery cell assembly 10, and is conducive to reducing the difficulty of assembling the battery cell assembly 10 to the box 20. On the other hand, the battery cell assembly 10 can be effectively fixed on the beam assembly 21, so that the battery cell assembly 10, the mounting beam and the mounting beam 210 are integrated, which is conducive to improving the structural strength of the battery device 100 and stably mounting on the body of the electric device.

[0266] According to some embodiments of the present application, the box 20 comprises a first box body 20a and a second box body 20b, and the first box body 20a and the second box body 20b are overlapped with each other and jointly define a containing cavity, and the first box body 20a comprises the beam assembly 21.

[0267] In some embodiments, the box 20 can comprise two structural members, including the first box body 20a and the second box body 20b. The first box body 20a and the second box body 20b are overlapped with each other to form a containing cavity for containing the battery cell assembly 10. In other words, one of the first box body 20a and the second box body 20b is opened to expose the containing cavity for maintaining the battery cell assembly 10.

[0268] The first box body 20a comprises the beam assembly 21, and it can be understood that the first box body 20a plays a main force bearing structure in the battery. In some embodiments, the first box body 20a can be made of a material with high structural strength, and the second box body 20b can be made of a material with low structural strength and low density to improve the mass energy density. For example, the first box body 20a is made of steel, and the second box body 20b is made of aluminum.

[0269] According to some embodiments of the present application, please refer to FIG. 3 and FIG. 14, which is a schematic diagram of the second box body 20b according to some embodiments of the present application. The first box body 20a further comprises a first wall 22 and a second wall 23, and the beam assembly 21 connects the first wall 22 and the second wall 23, and the first wall 22 and the second wall 23 are spaced apart along the first direction x. The second box body 20b comprises a third wall 24, a fourth wall 25 and a fifth wall 26, and the third wall 24 connects the fourth wall 25 and the fifth wall 26, and the fourth wall 25 and the fifth wall 26 are spaced apart along the second direction y, and the third wall 24 and the beam assembly 21 are oppositely arranged along the third direction z, and the first direction x, the second direction y and the third direction z are perpendicular to each other.

[0270] In some embodiments, the first box body 20a is similar to a "U" shaped structure, which comprises the beam assembly 21 and the first wall 22 and the second wall 23 arranged on the beam assembly 21, and the first wall 22 and the second wall 23 are arranged at two ends of the beam assembly 21 along the first direction x respectively. Optionally, the first wall 22 and the second wall 23 can be connected to the mounting beam 210 respectively. Exemplarily, the connection relationship between the first wall 22 and the beam assembly 21 comprises but is not limited to adhesion, welding, threaded connection, or the first wall 22 is integrally formed on the beam assembly 21. The connection relationship between the second wall 23 and the beam assembly 21 comprises but is not limited to adhesion, welding, threaded connection, or the second wall 23 is integrally formed on the beam assembly 21.

[0271] In some embodiments, the second box body 20b is similar to a "U" shaped structure, which comprises the third wall 24 and the fourth wall 25 and the fifth wall 26 arranged on the third wall 24, and the fourth wall 25 and the fifth wall 26 are arranged at two sides of the third wall 24 along the second direction y respectively. Exemplarily, the connection relationship between the fourth wall 25 and the third wall 24 comprises but is not limited to adhesion, welding, threaded connection, or the fourth wall 25 is integrally formed on the third wall 24. The connection relationship between the fifth wall 26 and the third wall 24 comprises but is not limited to adhesion, welding, threaded connection, or the fifth wall 26 is integrally formed on the third wall 24.

[0272] In some embodiments, the beam assembly 21 can be regarded as the bottom of the box body 20, or the beam assembly 21 is integrated with the heat management component 30 to form the bottom wall of the box body 20, the third wall 24 is the top wall of the box body 20, and the first wall 22, the second wall 23, the fourth wall 25 and the fifth wall 26 form the peripheral wall of the box body 20.

[0273] In some embodiments, the first box body 20a forms an opening in the second direction y, and the first box body 20a is connected with the second box body 20b, and the fourth wall 25 and the fifth wall 26 of the second box body 20b close the opening of the first box body 20a along the second direction y.

[0274] In the above scheme, the first box body 20a and the second box body 20b each form a structure similar to "U", which on one hand facilitates the first box body 20a and the second box body 20b to jointly define an assembly cavity for accommodating the battery monomer 11 after being covered with each other, and on the other hand can reduce the manufacturing difficulty of the first box body 20a and the second box body 20b, and is convenient for subsequent maintenance of the battery monomer assembly 10 accommodated in the box 20, and is conducive to reducing the difficulty of later maintenance of the battery device 100.

[0275] According to some embodiments of the present application, the fourth wall 25 and the fifth wall 26 are respectively connected with the two sides of the beam assembly 21 along the second direction y.

[0276] In some embodiments, the fourth wall 25 can be connected with the outer side of the beam assembly 21 along the second direction y, for example, the inner side of the fourth wall 25 and the outer side of the beam assembly 21 along the second direction y are mutually fitted to form a sealing surface perpendicular to the second direction y.

[0277] In some embodiments, the fifth wall 26 can be connected with the outer side of the beam assembly 21 along the second direction y, for example, the inner side of the fifth wall 26 and the outer side of the beam assembly 21 along the second direction y are mutually fitted to form a sealing surface perpendicular to the second direction y.

[0278] In some embodiments, the outer side of the beam assembly 21 along the second direction y is formed with a plurality of connecting holes, and a sealing structure such as a sealing gasket is arranged between the connection parts of the first box body 20a and the second box body 20b, and the first box body 20a and the second box body 20b are connected with each other by connecting pieces. Some connecting pieces can pass through part of the fourth wall 25 and the corresponding sealing structure to be arranged in the corresponding connecting hole, and some connecting pieces can pass through part of the fifth wall 26 and the corresponding sealing structure to be arranged in the corresponding connecting hole.

[0279] In the above scheme, the fourth wall 25 and the fifth wall 26 are respectively connected with the two sides of the beam assembly 21 along the second direction y, so that the connection surface between the fourth wall 25 and the beam assembly 21 and the connection surface between the fifth wall 26 and the beam assembly 21 occupy less space along the second direction y, so as to improve the space utilization rate of the battery along the second direction y, so that the inside of the box 20 can accommodate more battery monomer assemblies 10, thereby improving the volume energy density of the battery device 100.

[0280] According to some embodiments of the present application, some embodiments of the present application also provide a power utilization device, which comprises the battery device 100 provided in the first aspect, and the battery device 100 is used to provide electric energy.

[0281] Among them, the power utilization device can be any of the above-mentioned application devices or systems using the battery device 100.

[0282] According to some embodiments of the present application, referring to FIGS. 2-14, a power consuming device is provided.

[0283] The power consuming device includes a box body 20, a battery cell assembly 10, and a thermal management component 30. The box body 20 includes a first box body 20a and a second box body 20b, the first box body 20a and the second box body 20b are mutually covered, and the first box body 20a and the second box body 20b jointly define a receiving cavity for accommodating the battery cell assembly 10.

[0284] The first box body 20a and the second box body 20b are respectively in a "U" shape structure, the first box body 20a includes a beam assembly 21, a first wall 22, and a second wall 23, the first wall 22 and the second wall 23 are spaced apart on the beam assembly 21 along a first direction x, and the beam assembly 21, the first wall 22, and the second wall 23 are respectively connected with the second box body 20b to jointly form the receiving cavity. The second box body 20b includes a third wall 24, a fourth wall 25, and a fifth wall 26, the third wall 24 connects the fourth wall 25 and the fifth wall 26, and the fourth wall 25 and the fifth wall 26 are spaced apart along a second direction y, and the third wall 24 and the beam assembly 21 are oppositely arranged along a third direction z. In some embodiments, the fourth wall 25 and the fifth wall 26 are respectively connected with additional side surfaces of the beam assembly 21 along the second direction y.

[0285] The beam assembly 21 includes a mounting beam 210, a first mounting beam 211, and a second mounting beam 212, the first mounting beam 211 and the second mounting beam 212 are spaced apart on the mounting beam 210 along the first direction x. The beam assembly 21 has a mounting hole 213 penetrating along the third direction z, and the first mounting beam 211 and the second mounting beam 212 are respectively located on both sides of the mounting hole 213 along the first direction x. The mounting hole 213 includes a first hole section 2130 and a second hole section 2131 arranged along the third direction z, the second hole section 2131 is away from the receiving cavity relative to the second hole section 2131, and the hole wall surface of the first hole section 2130 and the hole wall surface of the second hole section 2131 are connected by a step surface 2132, and the step surface 2132 is arranged to face the receiving cavity.

[0286] The thermal management component 30 includes a main body 31, a lead-out portion, and a joint. The lead-out portion includes a first lead-out portion 32 and a second lead-out portion 33, and the joint includes a first joint 34 and a second joint 35. The thermal management component 30 has a flow channel for accommodating a medium formed inside, the main body 31 has a first flow channel 312, the first lead-out portion 32 has a second flow channel, the second lead-out portion 33 has a third flow channel, the first lead-out portion 32 connects the main body 31 and the first joint 34, the second lead-out portion 33 connects the main body 31 and the second joint 35, and the thermal management component 30 is connected with external pipelines through the first joint 34 and the second joint 35 to realize circulation of the medium, thereby exchanging heat with the battery cell assembly 10 and adjusting the temperature of the battery cell assembly 10.

[0287] The main body 31 is connected with the beam assembly 21, and is overlapped and closed on the mounting hole 213. In the third direction z, the side of the main body 31 away from the battery monomer assembly 10 is abutted on the step surface 2132, and the side of the main body 31 away from the second hole section 2131 can support the battery monomer assembly 10.

[0288] The joint is located outside the box 20, and the joint is connected with the main body 31 through the corresponding lead-out part.

[0289] Taking the first joint 34 and the first lead-out part 32 as an example, the beam assembly 21 is provided with a first avoiding part 40, and the first lead-out part 32 is arranged in the first avoiding part 40 to connect the first joint 34 and the main body 31.

[0290] Optionally, in some embodiments, the first avoiding part 40 is arranged on the first mounting beam 211, and the first avoiding part 40 can be a first avoiding groove formed on the first mounting beam 211, which is recessed from the side of the first mounting beam 211 away from the mounting beam 210 and towards the mounting beam 210. The first lead-out part 32 and the main body 31 are an integral structure, part of the first lead-out part 32 can be arranged in the first avoiding groove, part of the first lead-out part 32 outside the first avoiding groove is connected with the main body 31, and the other part of the first lead-out part 32 can pass through the first wall 22 to be connected with the first joint 34 outside the first wall 22.

[0291] Optionally, in some embodiments, the first avoiding part 40 is arranged on the mounting beam 210, and the first avoiding part 40 can be a first avoiding hole formed in the inside of the mounting beam 210. The first avoiding hole is formed in the inside of the mounting beam 210, and along the first direction x, the side of the mounting beam 210 facing the battery monomer assembly 10 is formed with a first opening 2100, the first opening 2100 is communicated with the first avoiding hole to allow the end of the first lead-out part 32 to pass out to connect the main body 31. Along the third direction z, the surface of the mounting beam 210 facing the first mounting beam 211 is formed with a second opening 2101, the second opening 2101 is communicated with the first avoiding hole to allow the end of the first lead-out part 32 to pass out to connect the first joint 34. In these embodiments, the first lead-out part 32 can include an adapter pipe 320 and an adapter joint 321, the adapter joint 321 is arranged on the side of the main body 31 away from the battery monomer assembly 10, along the first direction x, the opening of the adapter joint 321 is arranged towards the first joint 34, the first avoiding hole extends along the first direction x, the adapter pipe 320 is arranged in the first avoiding groove, one end of the adapter pipe 320 is inserted into the opening of the adapter joint 321, and the other end of the adapter pipe 320 is bent along the third direction z and integrally formed with the first joint 34.

[0292] In the above scheme, by setting the avoiding structure on the beam assembly 21, part of the structure of the thermal management component 30 is led out to set the joint outside the box 20. On the one hand, when the medium leakage occurs at the connection position of the joint, the phenomenon that the medium enters the box 20 and directly acts on the battery monomer 11 group can be alleviated, so as to reduce the risk of corrosion or internal short circuit of the battery monomer assembly 10 due to the medium, so that the battery device 100 has higher reliability. On the other hand, the joint does not occupy the space where the battery monomer assembly 10 is located, and the space occupied by the beam assembly 21 itself is used to lead part of the thermal management component 30 out of the box 20 to connect the first joint 34, so as to reduce the space occupancy rate of the thermal management component 30, so that the battery has more space to accommodate the battery monomer assembly 10, so as to facilitate the improvement of the volume energy density of the battery device 100.

[0293] The above only is the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, wherein, The battery device comprises: a battery cell assembly; a beam assembly comprising a first mounting beam and a hanging beam connected to each other, the first mounting beam being configured to be connected to the battery cell assembly, and the hanging beam being configured to connect the battery cell assembly to a body of an electrical device; a thermal management component comprising a main body, a first lead-out portion, and a first joint, the main body being configured to exchange heat with the battery cell assembly, the main body being located on one side of the first mounting beam along a first direction, the first joint being located on the other side of the first mounting beam along the first direction, and the first lead-out portion connecting the main body and the first joint; wherein the beam assembly is provided with a first avoiding portion, and the first lead-out portion is arranged in the first avoiding portion.

2. The battery device according to claim 1, wherein the first avoiding portion is arranged on the first mounting beam.

3. The battery device according to claim 2, wherein the first avoiding portion is a first avoiding groove, and the first avoiding groove is formed by recessing a side of the first mounting beam away from the hanging beam towards the hanging beam.

4. The battery device according to claim 2 or 3, wherein the first lead-out portion is integrally formed with the main body.

5. The battery device according to claim 1, wherein the first avoiding portion is arranged on the hanging beam.

6. The battery device according to claim 5, wherein at least a part of the first lead-out portion is embedded in the hanging beam.

7. The battery device according to claim 6, wherein a side of the first lead-out portion away from the battery cell assembly is connected to the main body.

8. The battery device according to claim 7, wherein the first lead-out portion comprises an adapter pipe and an adapter joint, the adapter joint is arranged on a side of the main body away from the battery cell assembly, and the adapter pipe connects the adapter joint and the first joint, and at least a part of the adapter pipe is embedded in the hanging beam.

9. The battery device according to claim 8, wherein in a direction of the first mounting beam pointing to the hanging beam, the adapter joint does not exceed a surface of the hanging beam away from the first mounting beam.

10. The battery device according to any one of claims 1-9, wherein the first lead-out portion extends along the first direction.

11. The battery device according to any one of claims 1-10, wherein the first mounting beam extends along a second direction, the first mounting beam and the hanging beam are arranged along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

12. The battery device according to any one of claims 1-11, wherein the hanging beam is integrally formed with the first mounting beam, or the hanging beam and the first mounting beam are separate structures.

13. The battery device according to any one of claims 1-12, wherein the main body comprises a first plate body and a second plate body, the first plate body and the second plate body are arranged in a stacked manner and jointly form a first flow channel for accommodating a medium.

14. The battery device according to any one of claims 1-13, wherein A mounting hole is formed on a side of the mounting beam away from the mounting beam along a third direction, the third direction being parallel to the arrangement direction of the mounting beam and the mounting beam.

15. The battery device according to any one of claims 1-14, wherein, The battery device comprises a box, the box having a receiving cavity inside for accommodating the battery cell assembly, the box comprising the beam assembly, the first mounting beam being located inside the receiving cavity, and the first joint being located outside the receiving cavity.

16. The battery device according to claim 15, wherein, The box further comprises a first wall, the first joint being located on a side of the first wall away from the receiving cavity, and the first lead-out portion penetrating the first wall.

17. The battery device according to claim 16, wherein, The first wall has a second avoiding portion penetrating along the first direction, the first lead-out portion penetrating the second avoiding portion, and an adhesive being arranged between the inner wall of the second avoiding portion and the first lead-out portion.

18. The battery device according to claim 16 or 17, wherein, The battery device further comprises an electrical connector connected with the battery cell assembly, the first wall being formed with a first through hole, and the electrical connector being mounted in the first through hole; The first wall and the first mounting beam are arranged apart along the first direction, and part of the electrical connector is located between the first wall and the first mounting beam.

19. The battery device according to any one of claims 15-18, wherein, The beam assembly has a mounting hole penetrating along a third direction, and the main body is connected with the beam assembly and covers the mounting hole, the third direction being parallel to the arrangement direction of the mounting beam and the mounting beam.

20. The battery device according to claim 19, wherein, The mounting hole comprises a first hole section and a second hole section arranged along the third direction, the second hole section being away from the receiving cavity relative to the second hole section, a hole wall surface of the first hole section and a hole wall surface of the second hole section being connected by a step surface, the step surface being arranged to face the receiving cavity, the main body being located in the first hole section, and the main body abutting against the step surface.

21. The battery device according to claim 20, wherein, The beam assembly further comprises a support beam arranged in the second hole section and separating the second hole section into at least two sub-through holes, and along the third direction, a side of the main body away from the battery cell assembly is connected with the support beam.

22. The battery device according to any one of claims 15-21, wherein, The beam assembly further comprises a second mounting beam connected with the battery cell assembly, and along the first direction, the second mounting beam is arranged apart from the first mounting beam, and the battery cell assembly is located between the first mounting beam and the second mounting beam.

23. The battery device according to any one of claims 15-22, wherein, The box includes a first box body and a second box body, the first box body and the second box body are mutually covered and jointly define the accommodating cavity, and the first box body includes the beam assembly. 24.The battery device of claim 23, wherein, The first box body further includes a first wall and a second wall, the beam assembly connects the first wall and the second wall, and the first wall and the second wall are spaced apart along the first direction; The second box body includes a third wall, a fourth wall and a fifth wall, the third wall connects the fourth wall and the fifth wall, and the fourth wall and the fifth wall are spaced apart along a second direction, the third wall and the beam assembly are oppositely arranged along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other in pairs. 25.The battery device of claim 24, wherein, The fourth wall and the fifth wall are connected with two sides of the beam assembly along the second direction, respectively.

26. An electrical device, comprising: A battery device as claimed in any one of claims 1-25 is used to provide electric energy.

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