Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device. The battery device comprises a battery cell assembly, a beam assembly and a heat management component, the beam assembly comprises a first mounting beam and a mounting beam which are connected with each other, the first mounting beam is used for being connected with the battery monomer assembly, and the mounting beam is used for connecting the battery monomer assembly to the power utilization device body. The heat management part comprises a main body, a first lead-out part and a first joint, the main body is used for exchanging heat with the battery monomer assembly and located on one side of the first mounting beam in the first direction, the first joint is located on the other side of the first mounting beam in the first direction, and the first lead-out part is connected with the main body and the first joint. Wherein the beam assembly is provided with a first avoiding part, and the first leading-out part penetrates through the first avoiding part. According to the technical scheme provided by the invention, the energy density of the battery device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Art

[0002] Energy and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important part of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] In the development of battery technology, how to improve the energy density of battery devices is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a battery device and an electrical device. The technical solution provided in the present application can effectively improve the energy density of the battery device.

[0005] In a first aspect, some embodiments of the present application provide a battery device, comprising a battery cell assembly, a beam assembly, and a thermal management component. The beam assembly comprises a first mounting beam and a mounting beam connected to each other, the first mounting beam being used to connect to the battery cell assembly, and the mounting beam being used to connect the battery cell assembly to the main body of the electrical device. The thermal management component comprises a main body, a first lead-out portion, and a first joint, the main body being used for heat exchange 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. The beam assembly is provided with a first avoidance portion, and the first lead-out portion is passed through the first avoidance portion.

[0006] In the above solution, a first relief wall is provided on the beam assembly to allow the first lead portion to pass through, so that the first connector is located on the side of the first mounting beam facing away from the battery cell group. On the one hand, when dielectric leakage occurs at the connection point between the first connector and the first lead portion, the phenomenon of the dielectric directly affecting the battery cell group is alleviated, thereby reducing the risk of dielectric corrosion or internal short circuits in the battery cell assembly, thereby enhancing the reliability of the battery device. On the other hand, the first connector does not occupy the space where the battery cell assembly is located, and the first lead portion utilizes the space occupied by the beam assembly itself to connect to the first connector. This can reduce the space occupied by the thermal management component, leaving more space for the battery cell assembly, thereby facilitating an increase in the volumetric energy density of the battery device.

[0007] According to some embodiments of the present application, the first avoidance portion is provided on the first mounting beam.

[0008] In the above solution, by setting the first avoidance 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 and reducing the difficulty of passing the first lead-out portion out, so that the first lead-out portion can quickly connect the main body with the first connector, thereby facilitating the improvement of the manufacturing efficiency of the battery device.

[0009] According to some embodiments of the present application, the first avoidance portion is a first avoidance groove, and the first avoidance groove is formed by a side of the first mounting beam facing away from the mounting beam and recessed toward the mounting beam.

[0010] In the above scheme, by setting the first avoidance portion as the first avoidance groove, on the one hand, the difficulty of forming the first avoidance 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 set in the first avoidance groove from the notch of the first avoidance groove to connect the main body with the first connector, thereby facilitating the improvement of battery manufacturing efficiency.

[0011] According to some embodiments of the present application, the first lead-out portion is integrally formed with the main body.

[0012] In the above scheme, the first lead-out portion and the main body are manufactured using an integrated molding process. On the one hand, this can make the thermal management component highly integrated, the manufacturing efficiency high, and reduce the number of parts, which can be beneficial to improving the battery manufacturing efficiency; on the other hand, it can make the thermal management component structurally strong, which can effectively reduce the risk of leakage of the thermal management component, thereby facilitating the improvement of the thermal management efficiency of the battery cell assembly by the thermal management component, and further improving the battery reliability.

[0013] According to some embodiments of the present application, the first avoidance portion is disposed on the mounting beam.

[0014] In the above solution, by arranging the first avoidance 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 impact of the arrangement of the first avoidance portion on the structural strength of the first mounting portion can be reduced, so that the first mounting portion can effectively fix the battery cell assembly, thereby increasing the reliability of the battery device.

[0015] According to some embodiments of the present application, at least a portion of the first lead-out portion is embedded in the mounting beam.

[0016] In the above scheme, by arranging at least a 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 achieved, the assembly efficiency of the first lead-out part can be improved, and thus the battery manufacturing efficiency can be improved; on the other hand, the mounting beam can play a role in protecting the first lead-out part, thereby reducing the first lead-out part from being damaged by the impact structure and causing medium leakage, affecting the thermal management efficiency of the battery single cell assembly, and thus helping to improve the battery reliability; on the other hand, the first lead-out part can effectively utilize the space where the mounting beam is located, making the battery structure compact, which is conducive to improving the battery volume energy density.

[0017] According to some embodiments of the present application, the first lead-out portion is connected to a side of the main body facing away from the battery cell assembly.

[0018] In the above scheme, by setting the first lead-out part to be connected to the side of the main body away from the battery cell assembly, so that the first lead-out part is away from the battery cell group, on the one hand, the risk of mutual interference between the first lead-out part and the battery cell group, which leads to high difficulty in assembling thermal management components and affects the battery manufacturing efficiency, can be reduced; on the other hand, the occupation of the space where the battery cell assembly is located by the first lead-out part can be reduced, which is conducive to improving the volume energy density of the battery; on the other hand, the first connector and the first lead-out part can be kept away from the battery cell, so that when the medium leaks at the first connector or the first lead-out part, the risk of the medium affecting the battery cell assembly can be effectively reduced, so that the reliability of the battery device is high.

[0019] According to some embodiments of the present application, the first lead-out portion includes a transfer tube and a transfer connector. The transfer connector is arranged on a side of the main body away from the battery cell assembly. The transfer tube connects the transfer connector and the first connector. At least a portion of the transfer tube is embedded in the mounting beam.

[0020] In the above scheme, the first lead-out part includes an adapter tube and an adapter joint that are plugged into each other. The adapter joint and the first joint are connected by the adapter tube, and the 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 maintenance costs.

[0021] According to some embodiments of the present application, along the direction from the first mounting beam to the mounting beam, the adapter does not extend beyond the surface of the mounting beam facing away from the first mounting beam.

[0022] In the above solution, by setting the adapter to not exceed the surface of the mounting beam away from the first mounting beam, on the one hand, the risk of the adapter being exposed, resulting in low battery space utilization and affecting the battery volume energy density, can be reduced; on the other hand, the mounting beam can protect the adapter, reducing the risk of structural damage to the adapter due to external impact, resulting in medium leakage, so that the battery has higher reliability.

[0023] According to some embodiments of the present application, the first lead-out portion extends along a first direction.

[0024] In the above solution, by setting the first lead-out portion to extend along the first direction, the occupation of the internal space of the battery by the first lead-out portion can be reduced, and the efficiency of the first lead-out portion passing through the beam assembly can be improved. On the one hand, the problem of large leakage risk 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 made compact, which is beneficial to the improvement of the volume energy density of the battery.

[0025] 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 in pairs.

[0026] According to some embodiments of the present application, the mounting beam is integrally formed with the first mounting beam, or the mounting beam and the first mounting beam are separate structures.

[0027] In the above solution, in some embodiments, by manufacturing the mounting beam and the first mounting beam through an integral forming process, the mounting beam and the first mounting beam have high structural strength, which can improve the structural reliability of the battery and is beneficial to the stable mounting of the battery on the body of the electrical device. In some embodiments, by setting the mounting beam and the first mounting beam as independent separate structures, the manufacturing difficulty of the beam assembly can be reduced, and the maintenance cost of the beam assembly can be reduced.

[0028] According to some embodiments of the present application, the main body includes 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.

[0029] In the above solution, the main body structure is simple and convenient for processing and manufacturing. The main body includes a first plate body and a second plate body that are stacked, and the first plate body and the second plate body jointly define a first flow channel for accommodating a medium to achieve heat exchange with the battery monomer assembly, so that the battery is at an appropriate temperature to have good charge and discharge performance.

[0030] According to some embodiments of the present application, along the third direction, a mounting hole is formed on the side of the mounting beam facing away from the mounting beam, and the third direction is parallel to the arrangement direction of the mounting beam and the mounting beam.

[0031] In the above solution, by providing a mounting hole on the side of the mounting beam facing away from the mounting beam, it is convenient to mount the battery on the body of the electrical device.

[0032] According to some embodiments of the present application, the battery device includes a box body, the box body has an accommodation cavity inside, the accommodation cavity is used to accommodate the battery monomer assembly, the box body includes a beam assembly, the first mounting beam is located inside the accommodation cavity, and the first joint is located outside the accommodation cavity.

[0033] In the above solution, the battery includes a housing, and the battery cell assembly is located within the housing, which can reduce the impact of external substances on the battery cell assembly, thereby improving battery reliability. The first connector is arranged outside the housing. In the event of leakage of medium at the connection between the first connector and the first lead portion, or at the connection between the first connector and the external structural member, this can alleviate the phenomenon of medium entering the accommodating cavity, thereby reducing the risk of the medium affecting the battery cell assembly, causing corrosion or short circuiting of the battery cell assembly, and thus improving battery reliability.

[0034] According to some embodiments of the present application, the box body further includes a first wall, the first connector is located on a side of the first wall away from the accommodating cavity, and the first lead-out portion passes through the first wall.

[0035] In the above solution, by arranging the first connector on the side of the first wall away from the accommodating cavity, the part of the thermal management component that is relatively prone to leakage can be effectively arranged outside the accommodating cavity, thereby effectively reducing the risk of the battery cell assembly being corroded or short-circuited by the medium, thereby increasing the reliability of the battery device.

[0036] According to some embodiments of the present application, the first wall has a second avoidance portion extending along the first direction, the first lead-out portion is passed through the second avoidance portion, and an adhesive is provided between the inner wall of the second avoidance portion and the first lead-out portion.

[0037] In this solution, by providing a second relief portion on the first wall for the first lead portion to pass through, the first lead portion reduces the space occupied by the first lead portion within the housing, simplifying the structure of the thermal management component and facilitating an increase in the battery's volumetric energy density. Providing an adhesive between the inner wall of the second relief portion and the first lead portion effectively improves the connection stability between the thermal management component and the housing, resulting in a more stable battery structure and improved battery reliability.

[0038] According to some embodiments of the present application, the battery device further includes an electrical connector connected to the battery cell assembly, wherein 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 spaced apart along a first direction, and a portion of the electrical connector is located between the first wall and the first mounting beam.

[0039] In the above scheme, the electrical connector is installed in the first through hole, which enables the electrical connector to be conveniently connected to the external component to realize the electrical exchange between the battery and the electrical device body, 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 difficulty of assembling the battery device is reduced, and the manufacturing efficiency of the battery device is improved.

[0040] According to some embodiments of the present application, the beam assembly has a mounting hole extending along a third direction, the main body is connected to 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.

[0041] In the above solution, 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 into one body, improving the structural strength of the battery device, reducing the impact of external shocks on the battery device, and making the battery device highly reliable; on the other hand, the thermal management component can be used instead of the bottom plate, reducing the number of components of the battery device, which is conducive to improving the mass energy density of the battery device.

[0042] According to some embodiments of the present application, the mounting hole includes a first hole section and a second hole section arranged along a third direction. The second hole section faces 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 stepped surface. The stepped surface faces the accommodation cavity. The main body is located in the first hole section and abuts against the stepped surface.

[0043] In the above solution, the mounting hole includes a first hole section and a second hole section arranged along a 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 stepped surface, and the stepped surface faces the accommodation cavity in the third direction. Among them, by arranging the main body of the thermal management component in the first hole section and abutting against the stepped surface, on the one hand, it is convenient to install the thermal management component in the mounting hole, which is beneficial to reducing the assembly difficulty between the thermal management component and the beam assembly; on the other hand, the stepped surface can also play a certain limiting and positioning role for the thermal management component in the third direction, which is beneficial to improving the stability and reliability of the thermal management component installed on the beam assembly.

[0044] According to some embodiments of the present application, the beam assembly further includes 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. Along the third direction, the side of the main body facing away from the battery cell assembly is connected to the support beam.

[0045] In the above solution, by arranging the support beam in the mounting hole, on the one hand, it can provide the structural strength of the beam assembly, enabling the beam assembly to effectively bear the gravity of the battery cell assembly and stably mount the battery on the power device body; on the other hand, the support beam can also play a certain supporting role for the thermal management component, which is beneficial to reducing the risk of deformation of the thermal management component during use, and the support beam can also play a certain protective role for the thermal management component, which is beneficial to alleviating the phenomenon of direct collision between the thermal management component and the external environment.

[0046] According to some embodiments of the present application, the beam assembly further includes a second mounting beam. The second mounting beam is connected to the battery cell assembly. Along the first direction, the second mounting beam is spaced apart from the first mounting beam. The battery cell assembly is located between the first mounting beam and the second mounting beam.

[0047] In the above solution, the first mounting beam and the second mounting beam are arranged at intervals in the first direction. On the one hand, it can play a role in assembling and positioning the battery cell assembly, which is beneficial to reducing the difficulty of assembling the battery cell assembly into the box body; on the other hand, it can effectively fix the battery cell assembly on the beam assembly, so that the battery cell assembly, the mounting beam and the hanging beam are integrated into one, which is beneficial to improving the structural strength of the battery device and can be stably mounted on the main body of the electrical device.

[0048] According to some embodiments of the present application, the box body 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 an accommodation cavity. The first box body includes a beam assembly.

[0049] According to some embodiments of the present application, 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 arranged at intervals in 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 arranged at intervals in the second direction. The third wall and the beam assembly are arranged opposite to each other in the third direction. The first direction, the second direction and the third direction are perpendicular to each other in pairs.

[0050] In the above solution, both the first box body and the second box body form a structure similar to a "U". On the one hand, it is convenient for the first box body and the second box body to jointly define an assembly cavity for accommodating battery cells after being mutually covered; on the other hand, it can reduce the manufacturing difficulty of the first box body and the second box body, and is convenient for subsequent maintenance of the battery cell assembly accommodated in the box body, which is beneficial to reducing the later maintenance difficulty of the battery device.

[0051] According to some embodiments of the present application, the fourth wall and the fifth wall are respectively connected to both sides of the beam assembly in the second direction.

[0052] In the above solution, the fourth wall and the fifth wall are respectively connected to both sides of the beam assembly in the second direction, so that the connection surface between the fourth wall and the beam assembly and the connection surface between the fifth wall and the beam assembly occupy less space in the second direction, so as to improve the space utilization rate of the battery in the second direction, so that more battery cell assemblies can be accommodated inside the box body, thereby improving the volume energy density of the battery device.

[0053] In a second aspect, some embodiments of the present application further provide an electrical device. The electrical device includes the battery device provided in the first aspect, and the battery device is used to provide electric energy.

[0054] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0056] Figure 1 Structural schematic diagram of a vehicle in some embodiments of the present application;

[0057] Figure 2 Exploded perspective view of a battery device in some embodiments of the present application;

[0058] Figure 3 Structural schematic diagram of a beam assembly and a thermal management component in some embodiments of the present application;

[0059] Figure 4 Internal schematic diagram of a partial structure of a beam assembly in some embodiments of the present application;

[0060] Figure 5 Exploded perspective view of a beam assembly and a thermal management component in some embodiments of the present application;

[0061] Figure 6 For Figure 5 Enlarged view of location A in

[0062] Figure 7 Schematic diagram of a thermal management component in some embodiments of the present application;

[0063] Figure 8 Exploded perspective view of a beam assembly and a thermal management component in some other embodiments of the present application;

[0064] Figure 9 Internal schematic diagram of a partial structure of a battery device in some other embodiments of the present application;

[0065] Figure 10 For Figure 9 Enlarged view of location B in

[0066] Figure 11 Exploded perspective view of a thermal management component in some embodiments of the present application;

[0067] Figure 12 Partial structural schematic diagram of a first box body and a thermal management component in some embodiments of the present application;

[0068] Figure 13 For Figure 5 Enlarged view of location C in

[0069] Figure 14 Schematic diagram of the second box body in some embodiments of the present application.

[0070] Icons: 1000 - vehicle; 100 - battery device; 200 - controller; 300 - motor;

[0071] 10 - battery cell assembly; 11 - battery cell; 20 - box body; 20a - first box body; 20b - second box body; 21 - beam assembly; 210 - mounting beam; 2100 - first opening; 2101 - second opening; 2102 - third surface; 2103 - mounting hole; 211 - first mounting beam; 2110 - sub - structure; 212 - second mounting beam; 213 - mounting hole; 2130 - first hole segment; 2131 - second hole segment; 2132 - step 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 part; 32a - first part; 32b - second part; 320 - adapter pipe; 321 - adapter; 33 - second lead - out part; 34 - first joint; 35 - second joint; 40 - first avoidance part; 50 - second avoidance part; 60 - electrical connector; x - first direction; y - second direction; z - third direction. Detailed implementation manners

[0072] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts fall within the scope of protection of the present application.

[0073] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the description of the present application in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the description and claims of the present application and the above - mentioned drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present application or the above - mentioned drawings are used to distinguish different objects and are not used to describe a specific order or primary - secondary relationship.

[0074] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0075] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0076] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0077] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device are only illustrative and should not constitute any limitation to this application.

[0078] The "plurality" mentioned in this application refers to two or more (including two).

[0079] In the embodiments of this application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging to continue use after discharging the battery cell.

[0080] 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-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of this application are not limited thereto.

[0081] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can play a role in preventing short circuit between the positive and negative electrodes, and at the same time can allow active ions to pass through.

[0082] 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 provided on at least one surface of the positive electrode current collector.

[0083] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector.

[0084] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0085] In some embodiments, the separator is a separator film. The types of the separator film can be various, and any well-known porous structure separator film with good chemical stability and mechanical stability can be selected.

[0086] In some embodiments, the battery cell further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The electrolyte can be liquid, gel or solid. Among them, the liquid electrolyte includes electrolyte salts and solvents.

[0087] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0088] In some embodiments, the electrode assembly is a stacked structure.

[0089] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets can be respectively provided, and the plurality of positive electrode sheets and the plurality of negative electrode sheets are alternately stacked.

[0090] As an example, a plurality of positive electrode sheets can be provided, and the negative electrode sheet is folded to form a plurality of stacked folding segments, and a positive electrode sheet is clamped between adjacent folding segments.

[0091] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of stacked folding segments.

[0092] As an example, a plurality of separators can be provided and are respectively disposed between any adjacent positive electrode sheets or negative electrode sheets.

[0093] As an example, the separator can be continuously provided and is disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0094] In some embodiments, the shape of the electrode assembly can be cylindrical, flat or multi-prismatic, etc.

[0095] In some embodiments, the electrode assembly is provided with tabs, and the tabs can lead the current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0096] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as an electrode assembly and an 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 housing), or an aluminum-plastic film, etc.

[0097] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. The prismatic battery cell includes, but is not limited to, a square shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc.

[0098] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a mixed connection through a current collecting component.

[0099] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0100] In some embodiments, the battery apparatus can be a battery pack, and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0101] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box body by fixing the battery module in the box body.

[0102] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing a plurality of battery cells to the box body.

[0103] As an example, the box body may include a first box body and a second box body. The first box body and the second box body are buckled so that a closed space is formed inside the box body to accommodate the battery cell assembly. The "closed" here means covering or closing, which can be sealed or non-sealed. The first box body can be a top cover or a bottom plate.

[0104] As an example, the box body may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0105] As an example, the box body can be part of the chassis structure of a vehicle. For example, the top cover of the box body can become at least part of the floor of the vehicle, or the frame of the box body can become at least part of the cross beams and longitudinal beams of the vehicle.

[0106] In some embodiments, the battery device may refer to an energy storage device, which includes a box body with a door provided on at least one side thereof. The energy storage device includes an energy storage container, an energy storage electrical cabinet, etc.

[0107] Exemplarily, the battery device includes a beam assembly and a battery cell assembly. The beam assembly may include a mounting beam and a hanging beam arranged adjacent to each other. The mounting beam is used to install and fix the battery cell assembly, and the hanging beam is used to hang the battery on the main body of the power-consuming device so that the battery supplies power to the main body of the power-consuming device. Among them, in some embodiments, the beam assembly may be part of the structural members of the box body.

[0108] Batteries have outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide application range, and small self-discharge coefficient, and are an important part of the development of new energy today. The development of battery technology needs to consider various design factors simultaneously. For example, performance parameters such as reliability, cycle life, discharge capacity, charge and discharge rate, etc. In addition, the energy density of the battery device also needs to be considered.

[0109] In battery technology, a large amount of heat is generated during the continuous charge and discharge process of the battery cell assembly in the battery device. In the related art, in order to reduce the safety hazards caused by internal temperature rise during the use of the battery device, a thermal management component for heat exchange with the battery cell assembly is usually provided to adjust the temperature of the battery cell, thereby alleviating the phenomenon of temperature rise inside the battery. However, the connection positions of the joints of the thermal management component and the pipes for transporting the heat exchange medium in the related battery device are extremely prone to medium leakage during use, and the leaked medium will come into contact with multiple battery cells or other components in the battery cell assembly inside the box body, thus easily causing corrosion of the battery cells or the risk of short circuit between multiple battery cells, resulting in low reliability of the battery device during use. At the same time, the joints also occupy the space required by the battery cell assembly, which is not conducive to improving the volume energy density of the battery device.

[0110] In view of this, in order to improve the problem of low volume energy density of the battery due to the space occupied by the joint, and low battery reliability due to leakage at the connection between the joint and the pipeline, some embodiments of the present application provide a battery device, which includes a battery cell 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 to the battery cell assembly, and the mounting beam is used to connect the battery cell assembly to the main body of the electrical device. The thermal 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 cell assembly, the main body is located on one side of the first mounting beam along the first direction x, the first joint is located on the other side of the first mounting beam along the first direction x, and the first lead-out portion connects the main body and the first joint. Among them, the beam assembly is provided with a first avoidance portion, and the first lead-out portion is passed through the first avoidance portion.

[0111] In a battery of this structure, a first relief wall is provided on the beam assembly to allow the first lead portion to pass through, allowing the first connector to be positioned on the side of the first mounting beam facing away from the battery cell group. This, on the one hand, mitigates the direct effect of the media on the battery cell group when dielectric leakage occurs at the connection point between the first connector and the first lead portion, thereby reducing the risk of dielectric corrosion or internal short circuits in the battery cell group, resulting in a higher reliability of the battery device. Furthermore, the first connector does not occupy the space where the battery cell group is located, and the first lead portion utilizes the space occupied by the beam assembly itself to connect to the first connector. This reduces the space occupied by thermal management components, leaving more room in the battery to accommodate the battery cell group, thereby increasing the volumetric energy density of the battery device.

[0112] The battery devices disclosed in the embodiments of this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system comprising the battery devices disclosed in this application can be used to alleviate the problem of short circuits in the battery devices during use, thereby improving the reliability of the battery devices. It can also help increase the volumetric energy density of the battery devices and extend the operating time of the electrical devices.

[0113] The present invention provides an electrical device that uses a battery device as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0114] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0115] Please refer toFigure 1 , Figure 1 is a schematic structural diagram of a vehicle 1000 in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery device 100 is disposed inside the vehicle 1000. The battery device 100 can be disposed 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 to the vehicle 1000. For example, the battery device 100 can be used as an operating power source or a power source for the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0116] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source or a power source for the vehicle 1000, but also be used as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0117] Some embodiments of the present application provide a battery device 100. Please refer to Figures 2 - 4 , Figure 2 is a three-dimensional exploded view of the battery device 100 in some embodiments of the present application, Figure 3 is a schematic structural diagram of a beam assembly 21 and a thermal management component 30 in some embodiments of the present application, Figure 4 is an internal schematic diagram of a partial structure of the beam assembly 21 in some embodiments of the present application.

[0118] The battery device 100 includes a battery cell 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 that are connected to each other. The first mounting beam 211 is used to connect to the battery cell assembly 10, and the hanging beam 210 is used to connect the battery cell assembly 10 to the main body of the electrical device. The thermal management component 30 includes a main body 31, a first lead-out portion 32, and a first connector 34. The main body 31 is used for heat exchange with the battery cell assembly 10. The main body 31 is located on one side of the first mounting beam 211 along the first direction x, and the first connector 34 is located on the other side of the first mounting beam 211 along the first direction x. The first lead-out portion 32 connects the main body 31 and the first connector 34. Among them, the beam assembly 21 is provided with a first avoidance portion 40, and the first lead-out portion 32 passes through the first avoidance portion 40.

[0119] In some embodiments, the beam assembly 21 can be used to support the weights of the battery cell assembly 10, the thermal management component 30, and other structures of the battery, and the battery device 100 can be assembled onto the power consumption device body through the beam assembly 21, transferring the overall weight of the battery to the power consumption device body.

[0120] The beam assembly 21 includes a first mounting beam 211 and a mounting beam 210 that are connected to each other. The first mounting beam 211 is used to connect the battery cell assembly 10 and can transfer the weight of the battery cell assembly 10 to the mounting beam 210. The mounting beam 210 is used to connect to the power consumption device body to transfer the overall weight of the battery to the power consumption device body. Exemplarily, the first mounting beam 211 and the mounting beam 210 are arranged along the direction of gravity, the first mounting beam 211 is located above the mounting beam 210, the battery cell assembly 10 is disposed on the first mounting beam 211 by welding, bonding, threaded connection or other connection means, and a mounting hole 2103 is formed on the lower surface of the mounting beam 210. The mounting beam 210 is mounted on the bracket of the vehicle 1000 body through the cooperation of bolts and the mounting hole 2103.

[0121] In some embodiments, the beam assembly 21 can be an integrally formed structure, and the first mounting beam 211 and the mounting beam 210 are made by an integrally formed process, such as an extrusion molding process, a die-casting molding process, a casting process or other processes. In other embodiments, the beam assembly 21 can be connected to multiple structural members to form an integral structural member. For example, the first mounting beam 211 and the mounting beam 210 are split structures, and the connection relationship between the two includes but is not limited to welding, riveting, clamping, threaded connection or other connection relationships.

[0122] In some embodiments, the beam assembly 21 can be a frame structure for supporting the battery cell assembly 10 and mounting the battery on the power consumption device body.

[0123] In some embodiments, the beam assembly 21 can be a partial structure of the box body 20. Exemplarily, the battery includes a box body 20, and the box body 20 is used to provide an accommodation cavity for the battery cell assembly 10. The box body 20 can adopt various structures. Optionally, referring to Figure 2 As shown, the box body 20 can include a first box body 20a and a second box body 20b. The first box body 20a and the second box body 20b are covered with each other, and the first box body 20a and the second box body 20b jointly define an accommodation cavity for accommodating the battery cell assembly 10. The beam assembly 21 is a partial structure of the first box body 20a. Optionally, the structures of the first box body 20a and the second box body 20b can be various. Exemplarily, in Figure 2In it, both the first box body 20a and the second box body 20b are in a "U" shape structure, such that when the first box body 20a and the second box body 20b cover each other, they can jointly define a receiving cavity. Of course, in other embodiments, the first box body 20a can also be a hollow structure with one end open, the second box body 20b can be a plate-like structure, and the second box body 20b covers the open side of the first box body 20a, so that the first box body 20a and the second box body 20b jointly define a receiving cavity; the first box body 20a and the second box body 20b can also both be hollow structures with one side open, and the open side of the first box body 20a covers the open side of the second box body 20b. Of course, the box body 20 formed by the first box body 20a and the second box body 20b can be in various shapes, such as, a cylinder, a cuboid or a cube, etc. Exemplarily, in Figure 2 In it, the shape of the box body 20 formed by the first box body 20a and the second box body 20b is a cuboid.

[0124] In the battery device 100, the battery cell assembly 10 disposed in the box body 20 can be one or multiple. Each battery cell assembly 10 can include one or multiple battery cells 11. When including multiple battery cells 11, the multiple battery cells 11 can be connected in series, in parallel or in a mixed connection. The mixed connection means that there are both series and parallel connections among the multiple battery cells 11.

[0125] When there are multiple battery cell assemblies 10 disposed in the box body 20, the multiple battery cell assemblies 10 can be connected in series, in parallel or in a mixed connection. The mixed connection means that there are both series and parallel connections among the multiple battery cell assemblies 10. In some embodiments, the battery device 100 can also include other structures. For example, the battery can also include a busbar component for connecting multiple battery cell assemblies 10 to achieve electrical connection among the multiple battery cell assemblies 10. The battery device 100 can also include a thermal management component 30, and the thermal management component 30 can exchange heat with the battery cell assembly 10 to adjust the temperature of the battery cell assembly 10. The battery device 100 can also include a connector that can electrically connect the battery cell assembly 10 to the outside to achieve input and output of electric energy.

[0126] Among them, each battery cell 11 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. Optionally, the shape of the battery cell 11 can be various. For example, the battery cell 11 can be in the shape of a cuboid, a cylinder, a prism or other shapes, etc. Exemplarily, in Figure 2 In it, the battery cell 11 is in a cuboid structure.

[0127] In some embodiments, the battery cell assembly 10 includes a plurality of stacked battery cells 11 and end plates. Along the stacking direction of the battery cells 11, the two end plates are respectively arranged at both ends of the plurality of battery cells 11, and cooperate with the side plates to fix the plurality of battery cells 11 into a whole. In these embodiments, the first mounting beam 211 can be connected to 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, connection with threaded parts or other connection relationships. Generally, the first mounting beam 211 functions to fix the battery cells 11, and also functions to limit the positions of the battery cells 11 and reduce the impact on the battery cells 11 from the outside. Please refer to Figure 2 and Figure 3 , along the first direction x, the battery cell assembly 10 is located on one side of the first mounting beam 211. The first mounting beam 211 can function to limit the position of the battery cell assembly 10 in the first direction x and reduce the impact on the battery cell assembly 10 from the impact on the other side of the first mounting beam 211. Optionally, the beam assembly 21 includes 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 is connected to the end plate on one side of the battery cell assembly 10, and the second mounting beam 212 is connected to the end plate on the other side of the battery cell assembly 10.

[0128] The thermal management component 30 is used for heat exchange with the battery cell assembly 10 to adjust the temperature of the battery cells 11 in the battery cell assembly 10 so that the battery cells 11 are within a suitable temperature range to have good charge and discharge performance. Generally, the thermal management component 30 has a flow channel inside, and the flow channel is used for a volume medium so that the medium can exchange heat with the battery cell assembly 10 to manage the temperature of the battery cells 11. Optionally, the medium can be a fluid, and the fluid can be a liquid or a gas. Exemplarily, the medium can be a gas, such as air or hydrogen, etc., and the heat exchange medium can also be a liquid, such as water, saline solution or liquid nitrogen, etc.

[0129] In some embodiments, the thermal management component 30 has connectors, and the connectors can connect the thermal management component 30 to an external medium circulation device. Exemplarily, the thermal management component 30 includes a first connector 34 and a second connector 35. The first connector 34 and the second connector 35 are connected to the water tank of the vehicle 1000 through the connectors and pipes. The water tank of the vehicle 1000 provides the medium to the thermal management component 30 through the first connector 34 or the second connector 35, and the medium then flows back to the water tank through the second connector 35 or the first connector 34 to make the medium circulate.

[0130] In some embodiments of the present application, the thermal management component 30 includes a main body 31 and lead-out portions. The lead-out portions may include a first lead-out portion 32 and a second lead-out portion 33. The first lead-out portion 32 is used to connect the main body 31 and the first joint 34, and the second lead-out portion 33 is used to connect the main body 31 and the second joint 35. In some embodiments of the present application, the description is mainly based on the first lead-out portion 32 and the first joint 34. The features of the second lead-out portion 33 and the first joint 34, as well as the features related to the second lead-out portion 33 and the first joint 34, can be understood by referring to the first lead-out portion 32 and the first joint 34.

[0131] Along the first direction x, the main body 31 and the battery cell assembly 10 are arranged on the same side of the first mounting beam 211. Exemplarily, the main body 31 may be arranged below the battery cell assembly 10, having the functions of supporting the battery cell assembly 10 and adjusting the battery cell assembly 10. Optionally, the main body 31 is connected to the beam assembly 21 and is 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 box body 20a, supporting the battery cell assembly 10. The medium located inside the main body 31 can exchange heat with the battery cell assembly 10 to adjust the temperature of the battery cell assembly 10. Optionally, in some embodiments where the beam assembly 21 is a part of the structure of the first box body 20a, the thermal management component 30 can be integrated with the beam assembly 21 and used together as the bottom of the first box body 20a to jointly support the battery cell assembly 10. The main body 31 of the thermal management component 30 is located in the accommodation cavity.

[0132] Along the first direction x, the joint and the main body 31 are respectively located on both sides of the first mounting beam 211. It can be understood that the main body 31 and the battery cell assembly 10 are located inside the first mounting beam 211, and the joints (such as the first joint 34 and the second joint 35) are located outside the first mounting beam 211. Or it can be understood that the main body 31 and the battery cell assembly 10 are located inside the box body 20, that is, inside the accommodation cavity, and the joints (such as the first joint 34 and the second joint 35) are located outside the box body 20, that is, outside the accommodation cavity.

[0133] The first lead-out portion 32 is a structural member connecting the main body 31 and the first joint 34, and is used for the medium to enter the main body 31 from the first joint 34, or for the medium to flow out of the main body 31 to the first joint 34. Exemplarily, the first lead-out portion 32 is a plate-like structure, and its dimension in the second direction y is smaller than the dimension of the main body 31, and it can be in a tongue-like shape, for example. The first direction x and the second direction y are perpendicular to each other. Optionally, the plane formed by the first direction x and the second direction y can be the supporting plane of the beam assembly 21 for the battery cell assembly 10. The first direction x and the second direction y can be respectively perpendicular to the gravity direction. The first mounting beam 211 and the mounting beam 210 can be arranged along the third direction z, and the third direction z can be parallel to the gravity direction. Also exemplarily, the first lead-out portion 32 can be tubular, with one end connected to the main body 31 and the other end connected to the first joint 34.

[0134] The second lead-out portion 33 is a structural member connecting the main body 31 and the second joint 35, and is used for the medium to enter the main body 31 from the second joint 35, or for the medium to flow out of the main body 31 to the second joint 35. Exemplarily, the first lead-out portion 32 is a plate-like structure or the first lead-out portion 32 can be tubular, with one end connected to the main body 31 and the other end connected to the second joint 35.

[0135] In some embodiments, the first lead-out portion 32, the first joint 34 and the main body 31 can be an integrally formed structure. In some other embodiments, the first lead-out portion 32 and the first joint 34 can be an integral structure, and the first lead-out portion 32 and the main body 31 can be a split structure. The split structures can be connected to each other by welding, clamping, plugging, riveting, bonding or connecting with threaded parts. In some other embodiments, the first lead-out portion 32, the first joint 34 and the main body 31 are all split structures, and the split structures can be connected to each other by welding, clamping, plugging, riveting, bonding or connecting with threaded parts.

[0136] "The beam assembly 21 is provided with a first avoidance portion 40, and the first lead-out portion 32 passes through the first avoidance portion 40" can be understood as that a first avoidance portion 40 is provided on the beam assembly 21 to provide space for the first lead-out portion 32 to avoid it, so that a part of the first lead-out portion 32 is on one side of the first mounting beam 211 to be connected to the main body 31, a part is in the first avoidance portion 40 of the first mounting beam 211, and the remaining part can be located on the other side of the first mounting beam 211 to connect the first joint 34.

[0137] Exemplarily, when observing the beam assembly 21 and the first lead-out portion 32 along the second direction y, a part of the first lead-out portion 32 can be blocked by the beam assembly 21, that is, on the same projection plane perpendicular to the second direction y, the positive projection of the first lead-out portion 32 and the positive projection of the beam assembly 21 at least partially overlap.

[0138] Optionally, the first avoidance portion 40 can be provided on the first mounting beam 211. For example, the first mounting beam 211 is provided with the first avoidance portion 40. The first avoidance portion 40 can be a groove-shaped structure recessed toward the mounting beam 210, or the first avoidance portion 40 can be a through-hole structure formed on the first mounting beam 211, and the through-hole structure is for the first lead-out portion 32 to pass through.

[0139] Optionally, the first avoidance portion 40 can be provided on the mounting beam 210. For example, the mounting beam 210 is provided with the first avoidance portion 40. The first avoidance portion 40 can be a through-hole structure penetrating the mounting beam 210 for the first lead-out portion 32 to pass through, or the mounting beam 210 and the first mounting beam 211 are separate structures, and the surface of the mounting beam 210 facing the first mounting beam 211 is recessed in a direction away from the first mounting beam 211 to form a groove-like structure for the first lead-out portion 32 to pass through.

[0140] Optionally, a portion of the first avoidance portion 40 is formed on the first mounting beam 211, and another portion is formed on the mounting beam 210. For example, the first avoidance portion 40 is a hole-shaped structure, which is formed by the first mounting beam 211 and the mounting beam 210, or the hole-shaped structure is partially located in the first mounting beam 211 and another portion is located in the mounting beam 210.

[0141] Optionally, the beam assembly 21 may further be provided with other avoidance structures for the second lead-out portion 33 to pass through to connect the second joint 35 and the main body 31 .

[0142] In the above solution, a first relief wall is provided on the beam assembly 21 to allow the first lead portion 32 to pass through, so that the first connector 34 is disposed on the side of the first mounting beam 211 facing away from the battery cell 11 group. On the one hand, when dielectric leakage occurs at the connection between the first connector 34 and the first lead portion 32, the dielectric's direct effect on the battery cell 11 group is alleviated, thereby reducing the risk of dielectric corrosion or internal short circuits in the battery cell assembly 10, thereby enhancing the reliability of the battery device 100. On the other hand, the first connector 34 does not occupy the space where the battery cell assembly 10 is located, and the first lead portion 32 utilizes the space occupied by the beam assembly 21 itself to connect to the first connector 34. This reduces the space occupied by the thermal management component 30, leaving more space in the battery to accommodate the battery cell assembly 10, thereby facilitating an increase in the volumetric energy density of the battery device 100.

[0143] According to some embodiments of this application, see Figure 5 and Figure 6 , Figure 5 This is a perspective exploded view of the beam assembly 21 and the thermal management component 30 in some embodiments of the present application. Figure 6 for Figure 5An enlarged view of portion A in the figure. The first avoidance portion 40 is provided on the first mounting beam 211.

[0144] In some embodiments, the first avoidance portion 40 is provided on the first mounting beam 211 so that the first lead-out portion 32 can utilize the space of the first mounting beam 211 in the third direction z.

[0145] In some embodiments, the first avoidance portion 40 may be a groove-like structure or a through-hole-like structure provided on the first mounting beam 211. Exemplarily, the first avoidance portion 40 is a through-groove that communicates with both sides of the first mounting beam 211 for the first lead-out portion 32 to pass through.

[0146] In some embodiments, on 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 first mounting beam 211 at least partially overlap.

[0147] 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 respectively located on opposite sides of the first mounting beam 211 along the first direction x. Both the first joint 34 and the main body 31 are located above the mounting beam 210. The first lead-out portion 32 can extend horizontally and pass through the first avoidance portion 40 provided on the first mounting beam 211 to connect the main body 31 and the first joint 34.

[0148] In the above solution, by providing the first avoidance portion 40 on the first mounting beam 211, the interference of the mounting beam 210 on the heat management component 30 can be reduced, thereby reducing the difficulty of assembling the heat management component 30 to the beam assembly 21 and reducing the difficulty of the first lead-out portion 32 passing through. As a result, the first lead-out portion 32 can quickly connect the main body 31 and the first joint 34, which is beneficial to improving the manufacturing efficiency of the battery device 100.

[0149] According to some embodiments of the present application, please refer to Figure 6 that the first avoidance portion 40 is a first avoidance groove, and the first avoidance groove is formed by recessing from the side of the first mounting beam 211 facing away from the mounting beam 210 towards the mounting beam 210.

[0150] The first avoidance portion 40 is a first avoidance groove. Along the third direction z, the notch of the first avoidance groove can be provided facing away from the mounting beam 210. The first avoidance groove penetrates through opposite sides of the first mounting beam 211 along the first direction x. Exemplarily, the first avoidance groove penetrates along the first direction x, or the first avoidance groove penetrates through the first mounting beam 211 along a direction inclined to the first direction x.

[0151] In some embodiments, the size of the first avoidance groove can be slightly larger than the size of the first lead-out portion 32 corresponding to the first avoidance groove, so as to allow the first lead-out portion 32 to be arranged in the first avoidance groove in the direction from the first mounting beam 211 to the mounting beam 210. For example, see Figure 7 , Figure 7 The figure is a schematic diagram 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. Along the first direction x, the first portion 32a is located on the side of the mounting beam away from the battery cell 11 group. The second portion 32b connects the main body 31 and the first portion 32a. The maximum dimension of the first portion 32a along the second direction y is greater than the maximum dimension of the second portion 32b along the second direction y. In other words, a constriction is formed between the first portion 32a and the main body 31. The constriction corresponds to the second portion 32b. The second portion 32b is disposed in the first avoidance groove. This design can reduce the size of the first avoidance groove along the second direction y, thereby reducing the impact of the first avoidance groove on the structural strength of the first mounting beam 211. At the same time, the larger first portion 32a can effectively accommodate the first joint 34.

[0152] Optionally, the first mounting beam 211 may include a plurality of spaced-apart substructures 2110 , wherein a gap between two adjacent substructures 2110 may form a first avoidance groove.

[0153] Optionally, an extrusion process, a slotting process or other processes may be used to slot the complete first mounting beam 211 to form the first avoidance slot.

[0154] In the above solution, by setting the first avoidance portion 40 as the first avoidance groove, on the one hand, the difficulty of forming the first avoidance portion 40 can be reduced, thereby improving the manufacturing efficiency of the battery device 100; on the other hand, the first lead-out portion 32 can be directly set in the first avoidance groove from the notch of the first avoidance groove to connect the main body 31 with the first connector 34, thereby facilitating the improvement of battery manufacturing efficiency.

[0155] According to some embodiments of this application, see Figure 7 , the first lead-out portion 32 and the main body 31 are integrally formed.

[0156] In some embodiments, the first lead-out portion 32 and the main body 31 are integrally formed structural members. Alternatively, the thermal management component 30 may include a main body and a joint, wherein the main body includes two stacked plates, each of which includes a portion of the main body 31 and a portion of the first lead-out portion 32. The two plates are stacked together to form the main body 31 and the first lead-out portion 32. The plates may be manufactured by die-casting, extrusion, or casting.

[0157] In some embodiments, along the third direction z, an opening is formed on a side of the first lead-out portion 32 away from the mounting beam 210, and the first connector 34 is disposed in the opening to communicate with a flow channel inside the main body 31 through the first lead-out portion 32.

[0158] In the above solution, the first lead-out portion 32 and the main body 31 are made by an integral molding process. On the one hand, it can make the heat management component 30 have high integration, high manufacturing efficiency and reduce the number of parts, which is beneficial to improving the battery manufacturing efficiency; on the other hand, it can make the heat management component 30 have high structural strength, effectively reduce the risk of leakage of the heat management component 30, thus facilitating the improvement of the heat management efficiency of the heat management component 30 for the battery cell assembly 10, and further facilitating the improvement of battery reliability.

[0159] According to some other embodiments of the present application, please refer to Figures 8 - 10 , Figure 8 is an exploded perspective view of the beam assembly 21 and the heat management component 30 in some other embodiments of the present application, Figure 9 is an internal schematic diagram of a partial structure of the battery device 100 in some other embodiments of the present application, Figure 10 is C an enlarged view of the B position in. The first avoidance portion 40 is disposed on the mounting beam 210.

[0160] In some embodiments, by disposing the first avoidance portion 40 on the mounting beam 210, the first lead-out portion 32 can utilize the space of the mounting beam 210 in the third direction z.

[0161] In some embodiments, the first avoidance portion 40 can be a groove-like structure or a through-hole-like structure disposed on the mounting beam 210. Exemplarily, the first avoidance portion 40 is a through-hole-like structure that penetrates the mounting beam 210 for the first lead-out portion 32 to pass through.

[0162] In some embodiments, on 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 mounting beam 210 at least partially overlap.

[0163] In the above solution, by disposing the first avoidance portion 40 on the mounting beam 210, on the one hand, the first lead-out portion 32 can reasonably utilize the space where the mounting beam 210 is located, and on the other hand, it can reduce the influence on the structural strength of the first mounting portion caused by the setting of the first avoidance portion 40, so that the first mounting portion can effectively fix the battery cell assembly 10, making the battery device 100 highly reliable.

[0164] According to some embodiments of the present application, at least a part of the first lead-out portion 32 is embedded in the mounting beam 210.

[0165] In some embodiments, the first escape portion 40 may be a first escape hole capable of accommodating at least a portion of the first lead-out portion 32. For example, one end of the first lead-out portion 32 is located outside the first escape hole to enable connection with the main body 31, a portion of the first lead-out portion 32 is located within the first escape hole, and the other end of the first lead-out portion 32 is located outside the first escape hole to connect to the first connector 34.

[0166] Optionally, a first avoidance hole is formed inside the mounting beam 210, and along the first direction x, a first opening 2100 is formed on the side of the mounting beam 210 facing the battery cell assembly 10, and the first opening 2100 is connected to the first avoidance hole for the end of the first lead-out portion 32 to pass through and thus connect to 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, and the second opening 2101 is connected to the first avoidance hole for the end of the first lead-out portion 32 to pass through and thus connect to the first connector 34.

[0167] In the above scheme, by setting at least a portion of the first lead-out part 32 to be embedded in the mounting beam 210, on the one hand, the assembly positioning of the first lead-out part 32 can be achieved, and the assembly efficiency of the first lead-out part 32 can be improved, thereby facilitating the improvement of the battery manufacturing efficiency; on the other hand, the mounting beam 210 can protect the first lead-out part 32, thereby reducing the damage to the first lead-out part 32 due to impact and the occurrence of medium leakage, affecting the thermal management efficiency of the battery cell assembly 10, thereby facilitating the improvement of the battery reliability; on the other hand, the first lead-out part 32 can effectively utilize the space where the mounting beam 210 is located, making the battery structure compact, thereby facilitating the improvement of the battery volume energy density.

[0168] According to some embodiments of this application, see Figure 9 and Figure 8 The first lead portion 32 is connected to a side of the main body 31 that is away from the battery cell assembly 10 .

[0169] 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 cell assembly 10, the second surface 31b is the surface of the main body 31 facing away from the battery cell assembly 10, and the first lead-out portion 32 can be connected to the second surface 31b.

[0170] Optionally, in other embodiments, if the thickness of the main body 31 satisfies the condition, the first lead-out portion 32 may also be connected to the outer peripheral surface of the main body 31, that is, the connection position of the first lead-out portion 32 is between the first surface 31a and the second surface 31b.

[0171] In the above scheme, by setting the first lead-out portion 32 to be connected to the side of the main body 31 away from the battery cell assembly 10, so that the first lead-out portion 32 is away from the battery cell 11 group, on the one hand, the risk of interference between the first lead-out portion 32 and the battery cell 11 group, which makes it difficult to assemble the thermal management component 30 and affects the battery manufacturing efficiency, can be reduced; on the other hand, the occupation of the space where the battery cell assembly 10 is located by the first lead-out portion 32 can be reduced, which is conducive to improving the volume energy density of the battery; on the other hand, the first connector 34 and the first lead-out portion 32 can be kept away from the battery cell 11, so that when the medium leaks at the first connector 34 or the first lead-out portion 32, the risk of the medium affecting the battery cell assembly 10 can be effectively reduced, so that the reliability of the battery device 100 is high.

[0172] According to other embodiments of the present application, see Figure 9 and Figure 8 The first lead-out portion 32 includes a transfer tube 320 and a transfer connector 321. The transfer connector 321 is arranged on a side of the main body 31 away from the battery cell assembly 10. The transfer tube 320 connects the transfer connector 321 and the first connector 34. At least a portion of the transfer tube 320 is embedded in the mounting beam 210.

[0173] In some embodiments, the first outlet portion 32 includes a transfer tube 320 and a transfer joint 321. Both the transfer tube 320 and the transfer joint 321 are provided with flow channels to facilitate the input or output of the medium. The transfer tube 320 is a tubular column. Optionally, the transfer tube 320 can be in the shape of a circular tube, a square tube, or a thin plate tube.

[0174] In some embodiments, the main portion of the transfer tube 320 may be located in the first avoidance hole, one end of the transfer tube 320 may be connected to the first connector 34, and the other end may be connected to the transfer connector 321. The transfer connector 321 may be a structural component disposed on the second surface 31b of the main body 31.

[0175] In some embodiments, the transfer tube 320 can be fixed to the wall of the first avoidance hole by bonding, welding, clamping, etc. Alternatively, in some embodiments, there is no connection between the transfer tube 320 and the first avoidance hole, and the transfer tube 320 can be directly pulled out of the first avoidance hole.

[0176] The connection relationship between the adapter tube 320 and the adapter 321 includes but is not limited to welding, bonding, plugging, screw connection or other connection methods.

[0177] The connection relationship between the adapter tube 320 and the first connector 34 includes but is not limited to welding, bonding, plugging, screw connection or other connection methods, or the adapter tube 320 and the first connector 34 are an integrally formed structure.

[0178] The connection relationship between the adapter 321 and the main body 31 includes, but is not limited to, welding, bonding, plugging, connection with threaded parts or other connection methods, or the adapter 321 and the main body 31 are integrally formed structures.

[0179] Exemplarily, the adapter 321 protrudes from the second surface 31b of the main body 31 in a direction away from the first surface 31a. Along the first direction x, the opening of the adapter 321 faces the first joint 34. The first avoidance hole extends along the first direction x. The adapter pipe 320 is disposed in the first avoidance groove. One end of the adapter pipe 320 is inserted into the opening of the adapter 32, and the other end of the adapter pipe 320 is bent along the third direction z and integrally formed with the first joint 34.

[0180] In the above solution, the first lead-out portion 32 includes the adapter pipe 320 and the adapter 321 that are inserted and matched with each other. The adapter pipe 320 is used to connect the adapter 321 and the first joint 34 to supply external medium 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.

[0181] According to some other embodiments of the present application, please refer to Figure 10 , along the direction from the first mounting beam 211 to the mounting beam 210, the adapter 321 does not extend beyond the surface of the mounting beam 210 that is away from the first mounting beam 211.

[0182] In some embodiments, along the third direction z, the mounting beam 210 has a third surface 2102 that is away from the first mounting beam 211. The adapter 321 is located on the side of the main body 31 that is away from the battery cell 11 and does not extend beyond the third surface 2102. When the third direction z is the gravity direction, the third surface 2102 can be the lowest surface of the battery device 100, that is, the adapter 321 does not extend beyond the lowest surface of the battery device 100.

[0183] Optionally, the adapter 321 can be between the third surface 2102 and the second surface 31b, or the end of the adapter 321 that is away from the second surface 31b is flush with the third surface 2102.

[0184] In the above solution, by setting the adapter 321 not to extend beyond the surface of the mounting beam 210 that is away from the first mounting beam 211, on the one hand, it can reduce the risk that the adapter 321 is exposed, resulting in low utilization rate of the battery space and affecting the battery volume energy density; on the other hand, it can enable the mounting beam 210 to protect the adapter 321 and reduce the risk that the structure of the adapter 321 is damaged by external impact, resulting in medium leakage, so that the battery has high reliability.

[0185] According to some embodiments of the present application, the first lead-out portion 32 extends along the first direction x.

[0186] In some embodiments, the first lead-out portion 32 extends along the first direction x, that is, the long axis of the first lead-out portion 32 is parallel to the first direction x. Optionally, see Figure 10 and Figure 5 , the first lead-out portion 32 is in a tongue shape, and its length direction or the direction in which it extends out of the first avoidance groove is the first direction x. Optionally, see Figure 7 , the first lead-out portion 32 includes a transition pipe 320, and the axis of the transition pipe 320 can be the first direction x.

[0187] In the above solution, by setting the first lead-out portion 32 to extend along the first direction x, the occupation of the internal space of the battery by the first lead-out portion 32 can be reduced, and the efficiency of the first lead-out portion 32 extending out of the beam assembly 21 can be improved. On the one hand, the problem of large leakage risk caused by the oversize of the first lead-out portion 32 is improved, and on the other hand, the structure of the thermal management component 30 can be made compact, which is beneficial to the improvement of the volume energy density of the battery.

[0188] In some other embodiments, the first lead-out portion 32 extends along a direction inclined to the first direction x, that is, the long axis of the first lead-out portion 32 is inclined to the first direction x.

[0189] According to some embodiments of the present application, see Figure 8 , the first mounting beam 211 extends along the second direction y, 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 in pairs.

[0190] In some embodiments, the external contour of the battery device 100 can be in the shape of a cuboid, 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.

[0191] Exemplarily, the beam assembly 21 includes 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. The first mounting beam 211 and the second mounting beam 212 respectively extend along the second direction y. The battery cell assembly 10 is disposed between the first mounting beam 211 and the second mounting beam 212, and the two end plates of the battery cell assembly 10 are respectively connected to the first mounting beam 211 and the second mounting beam 212; along the third direction z, the mounting beam 210 is on the side of the first mounting beam 211 and the second mounting beam 212 facing away from the battery cell assembly 10.

[0192] According to some embodiments of the present application, the mounting beam 210 and the first mounting beam 211 are integrally formed, or the mounting beam 210 and the first mounting beam 211 are separate structures from each other.

[0193] In some embodiments, the beam assembly 21 may be an integrally formed structure, or a partial structure of the beam assembly 21 may be an integrally formed structure, or the beam assembly 21 is formed by connecting various components to each other.

[0194] Optionally, the mounting beam 210 and the first mounting beam 211 are made by an integrally formed process, such as an extrusion process, a die-casting process, or a casting process.

[0195] Optionally, the mounting beam 210 and the first mounting beam 211 are separate structures from each other, and the connection relationship between the two includes but is not limited to bonding, welding, riveting, clamping, connection by threaded parts, or other connection relationships.

[0196] In the above solutions, in some embodiments, by making the mounting beam 210 and the first mounting beam 211 through an integrally formed process, the mounting beam 210 and the first mounting beam 211 have high structural strength, which can improve the structural reliability of the battery and is conducive to stably mounting the battery on the main body of the electrical device. In some embodiments, by setting the mounting beam 210 and the first mounting beam 211 as independent 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.

[0197] According to some embodiments of the present application, please refer to Figure 5 , Figure 11 which is an exploded perspective 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. 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.

[0198] In some embodiments, the first plate body 310 and the second plate body 311 are stacked and connected along the third direction z. The connection relationship between the first plate body 310 and the second plate body 311 includes but is not limited to welding, bonding, connection by threaded parts, etc. In some embodiments, to reduce the risk of medium leakage, a seal may be provided at the connection part of the first plate body 310 and the second plate body 311.

[0199] In some embodiments, the materials of the first plate body 310 and the second plate body 311 may be the same or different. Optionally, the materials of the first plate body 310 and the second plate body 311 are respectively aluminum alloy, aluminum, stainless steel, or other materials.

[0200] The first plate body 310 and the second plate body 311 jointly define a first flow channel 312. The first flow channel 312 can accommodate a medium, and heat exchange is carried out between the medium and the battery cell assembly 10. In some embodiments, a second flow channel is formed in the first lead-out portion 32, the second flow channel communicates with the first flow channel, a third flow channel is formed in the second lead-out portion 33, and the third flow channel communicates with the first flow channel 312. Optionally, the medium in the external pipeline can enter the first flow channel through the first joint 34 and the second flow channel, and is discharged through the third flow channel and the second joint 35.

[0201] In some embodiments, along the third direction z, the first plate has a first plane facing the second plate body 311. A groove is provided on the side of the second plate body 311 facing the first plate body 310. The groove wall surface and the first plane jointly define the first flow channel 312. Among them, the groove wall surface and the first plane jointly define the first flow channel 312, that is, the first plane covers the notch of the groove, so that a first flow channel 312 is formed between the first plane and the groove wall surface. That is to say, the first flow channel 312 is formed in the area of the heat management component 30 corresponding to the groove. The first plane is a flat and continuous surface, and the first plane is perpendicular to the third direction z.

[0202] In some embodiments, the groove on the second plate body 311 can be formed by stamping process later, or the second plate body 311 is manufactured by die casting or casting to synchronously form the groove.

[0203] In the embodiment where the first lead-out portion 32 and the main body 31 are integrally formed structural members, 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 a second flow channel after being covered by the second plate body 311.

[0204] It should be noted that the structure of the main body 31 is not limited to this. In other embodiments, the main body 31 can also be other structures. For example, the second plate body 311 can have a first plane facing the first plate body 310, a groove is provided on the side of the first plate body 310 facing the second plate body 311, and the groove wall surface and the first plane jointly define the first flow channel 312; it can also be that grooves are provided on both the side of the first plate body 310 facing the second plate body 311 and the side of the second plate body 311 facing the first plate body �10, and the grooves of the first plate body 310 and the grooves of the second plate body 311 are correspondingly arranged in the third direction z, so that the groove wall surfaces of the grooves of the first plate body 310 and the groove wall surfaces of the grooves of the second plate body 311 jointly define the first flow channel 312.

[0205] In some embodiments, along the third direction z, a protrusion is formed on the side of the second plate body 311 facing away from the first plate body 310 and corresponding to the groove. Exemplarily, the groove provided on the side of the second plate body 311 facing the first plate body 310 is formed by a stamping process, so as to form a groove on the side of the second plate body 311 facing the first plate body 310, and a protrusion is formed on the side of the second plate body 311 facing away from the first plate body 310 and corresponding to the groove. Of course, the processing method of the groove provided 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 provided on the side of the second plate body 311 facing the first plate body 310 can also be formed by processing techniques such as casting, milling or etching.

[0206] In some embodiments, along the third direction z, the second plate body 311 is located on the side of the first plate body 310 facing away from the battery cell assembly 10. That is to say, in the third direction z, the second plate body 311 and the battery cell assembly 10 are respectively located on both sides of the first plate body 310.

[0207] In the above solution, the structure of the main body 31 is simple and convenient for processing and manufacturing. The main body 31 includes a first plate body 310 and a second plate body 311 which are stacked, and the first plate body 310 and the second plate body 311 jointly define a first flow channel 312 for accommodating a medium, so as to realize heat exchange with the battery cell assembly 10, so that the battery is at a suitable temperature to have good charge and discharge performance.

[0208] According to some embodiments of the present application, please refer to Figure 11 , along the third direction z, a mounting hole 2103 is formed on the side of the mounting beam 210 facing 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.

[0209] In some embodiments, a mounting hole 2103 is formed on the side of the mounting beam 210 facing away from the mounting beam for cooperating with a mounting member to connect the mounting beam 210 to the main body of the electrical device.

[0210] Exemplarily, the mounting hole 2103 is a threaded hole provided on the side of the mounting beam 210 facing away from the mounting beam, and the mounting member may include a threaded member.

[0211] In some embodiments, the number of the mounting holes 2103 may be multiple, and the multiple mounting holes 2103 are arranged at intervals along the second direction y.

[0212] In the above solution, by providing the mounting hole 2103 on the side of the mounting beam 210 facing away from the mounting beam, it is convenient to mount the battery on the main body of the electrical device.

[0213] According to some embodiments of the present application, the battery device 100 includes a box body 20, which has a accommodating cavity inside, and the accommodating cavity is used to accommodate the battery cell assembly 10. The box body 20 includes a beam assembly 21, the first mounting beam 211 is located in the accommodating cavity, and the first connector 34 is located outside the accommodating cavity.

[0214] In some embodiments, the battery cell assembly 10 is in a closed space. For example, the battery device 100 includes a box 20 having a receiving cavity therein. The battery cell assembly 10 is disposed in the receiving cavity to reduce the impact of external substances on the battery cell assembly 10 .

[0215] In some embodiments, the beam assembly 21 is a local structure of the box body 20 , and the first mounting beam 211 of the beam assembly 21 is located in the accommodating cavity to be connected to the battery cell assembly 10 .

[0216] Optionally, the box body 20 includes a first box body 20a and a second box body 20b, which cover each other and together define a housing cavity for accommodating the battery cell assembly 10. The beam assembly 21 is a portion of the first box body 20a and can serve as the bottom wall of the box body 20.

[0217] "The first connector 34 is located outside the accommodating cavity" can be understood as meaning that the connection position between the external pipe and the first connector 34 is outside the accommodating cavity, so as to be away from the battery cell assembly 10. Exemplarily, 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 the first direction x. The beam assembly 21, the first wall 22, and the second wall 23 are respectively connected to the second box body 20b to enclose and form an accommodating cavity. Along the first direction x, the side of the first wall 22 facing the battery cell assembly 10 is the inner side, and the side away from the battery cell assembly 10 is the outer side. The first connector 34 is arranged on the outer side of the first wall 22. The first connector 34 and the battery cell assembly 10 can be isolated by the first wall 22 in the first direction x.

[0218] In the above embodiment, the battery includes a housing 20, and the battery cell assembly 10 is located within the housing 20. This can reduce the impact of external substances on the battery cell assembly 10, thereby improving battery reliability. The first connector 34 is arranged outside the housing 20. In the event of leakage at the connection between the first connector 34 and the first lead portion 32, or at the connection between the first connector 34 and an external structural member, this can mitigate the risk of the medium entering the accommodating cavity. This reduces the risk of the medium affecting the battery cell assembly 10, which could lead to corrosion or short circuiting of the battery cell assembly 10, thereby improving battery reliability.

[0219] According to some embodiments of this application, see Figure 4 ,Figure 12 FIG. 1 is a schematic partial structure diagram of the first box body 20a and the thermal management component 30 in some embodiments of the present application. The box body 20 further includes a first wall 22, the first joint 34 is located on the side of the first wall 22 away from the accommodation cavity, and the first lead-out portion 32 penetrates through the first wall 22.

[0220] The first wall 22 may be a partial structure of the box body 20, and the first wall 22 is a partial structure enclosing the accommodation cavity. In some embodiments, the first wall 22 is a partial structure of the first box body 20a. In some other embodiments, the second wall 23 may also be a partial structure of the second box body 20b.

[0221] Optionally, the first wall 22 is a partial structure of the first box body 20a, and the first wall 22 is connected to 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, connection with threaded parts or other connection relationships, or the first box body 20a is an integrally formed structure, formed by die casting, casting or extrusion processes.

[0222] Along the first direction x, the side of the first wall 22 facing the battery cell assembly 10 is the inner side, and the inner side of the first wall 22 is used to enclose and form the accommodation cavity. The side of the first wall 22 away from the battery cell assembly 10 is the 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 cell assembly 10 can be separated by the first wall 22 in the first direction x. The first lead-out portion 32 can penetrate through 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.

[0223] In some embodiments, along the first direction x, the first joint 34 and the second joint 35 may be located on the same side of the first wall 22, that is, the second lead-out portion 33 may also penetrate through the first wall 22. In some other embodiments, the first box body 20a includes a first wall 22 and a second wall 23 arranged at intervals along 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 through the first wall 22, and the second lead-out portion 33 penetrates through the second wall 23.

[0224] In some embodiments, "the first lead-out portion 32 penetrates through the first wall 22" can be understood as that a part of the first lead-out portion 32 is located on the outer side of the first wall 22, and a part of the first lead-out portion 32 is located on the inner side of the first wall 22.

[0225] Optionally, the form of the first lead-out portion 32 penetrating through the first wall 22 is diverse. For example, the first wall 22 is formed with perforations, through grooves, notches, etc. for the first lead-out portion 32 to penetrate; or a part of the beam assembly 21 connected to the first wall 22 can be formed with a groove to jointly form a gap with the first wall 22 for the first lead-out portion 32 to penetrate.

[0226] In the above solution, by disposing the first joint 34 on the side of the first wall 22 away from the accommodation cavity, the part of the heat management component 30 that is relatively prone to leakage can be effectively disposed outside the accommodation cavity, thereby effectively reducing the risk of the battery cell assembly 10 being corroded or short-circuited by the medium, and making the battery device 100 highly reliable.

[0227] According to some embodiments of the present application, the first wall 22 has a second avoidance portion 50 penetrating along the first direction x, the first lead-out portion 32 penetrates through the second avoidance portion 50, and an adhesive is disposed between the inner wall of the second avoidance portion 50 and the first lead-out portion 32.

[0228] In some embodiments, the first wall 22 is formed with a second avoidance portion 50 for accommodating and avoiding the first lead-out portion 32, so that a part of the first lead-out portion 32 can pass through the first wall 22 to be connected to the first joint 34.

[0229] In some embodiments, the second avoidance portion 50 may include a second avoidance groove formed, and the second avoidance groove may be formed on the surface of the first wall 22 facing the beam assembly 21. Exemplarily, a first avoidance groove is provided on the first mounting beam 211, the first avoidance groove accommodates the second part 32b of the first lead-out portion 32, and the second avoidance groove is used to accommodate the first part 32a of the first lead-out portion 32. When assembling the heat management component 30, the first wall 22 and the beam assembly 21, the heat management component 30 can be assembled on the beam assembly 21 first, so that the second part 32b of the first lead-out portion 32 is disposed in the first avoidance groove, and then the first wall 22 is assembled on the beam assembly 21, so that the second avoidance groove of the first wall 22 accommodates the first part 32a of the first lead-out portion 32.

[0230] In some embodiments, the connection relationship between the first wall 22 and the first lead-out portion 32 includes but is not limited to bonding, welding, connection with threaded parts, etc.

[0231] In some embodiments, an adhesive may be disposed between the inner wall of the first avoidance 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 sticky materials.

[0232] Optionally, in some embodiments, the interior of the first lead-out portion 32 has a second flow channel. For example, the first lead-out portion 32 is formed by laminating a first plate body 310 and a second body, and the first body and the second body are laminated to form the second flow channel. An adhesive may be disposed between the corresponding part of the second avoidance groove and the second flow channel of the first lead-out portion 32, and the groove wall of the second avoidance groove and the remaining parts of the first lead-out portion 32 may be connected by welding.

[0233] In the above embodiment, by providing a second relief portion 50 on the first wall 22 for the first lead portion 32 to pass through, the space occupied by the first lead portion 32 within the housing 20 is reduced, simplifying the structure of the thermal management component 30 and facilitating an increase in the battery's volumetric energy density. Providing an adhesive between the inner wall of the second relief portion 50 and the first lead portion 32 effectively improves the connection stability between the thermal management component 30 and the housing 20, resulting in a more stable battery structure and improved battery reliability.

[0234] According to some embodiments of this application, see Figure 12 、 Figure 2 as well as Figure 3 The battery device 100 further includes an electrical connector 60 connected to the battery cell assembly 10. The first wall 22 defines a first through-hole, into which the electrical connector 60 is mounted. The first wall 22 and the first mounting beam 211 are spaced apart along the first direction x, with a portion of the electrical connector 60 located between the first wall 22 and the first mounting beam 211.

[0235] The electrical connector 60 may include an electrical plug or an electrical socket for connecting the battery cell assembly 10 to the electrical device body to achieve electrical energy input or output between the battery and the electrical device body.

[0236] The first wall 22 is formed with a first through-hole, and the electrical connector 60 is mounted in the first through-hole to seal the first through-hole. In some embodiments, a sealing structure may be provided between the electrical connector 60 and the wall of the first through-hole. In some embodiments, the electrical connector 60 is connected to the first wall 22, and the connection between the two includes, but is not limited to, welding, bonding, clamping, or threaded connection.

[0237] In some embodiments, along the first direction x, the first wall 22 and the first mounting beam 211 are spaced apart, the battery cell assembly 10 is located on the side of the first mounting beam 211 away from the first wall 22, and a partial structure of the electrical connector 60 can be located between the first wall 22 and the first mounting beam 211 to connect the battery cell assembly 10.

[0238] In the above scheme, the electrical connector 60 is installed in the first through hole, which enables the electrical connector 60 to be conveniently connected to the external component to realize the electrical exchange between the battery and the electrical device body, and by arranging part of the electrical connector 60 between the first wall 22 and the first mounting beam 211, the risk of mutual interference between the electrical connector 60 and the battery cell 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.

[0239] In some embodiments, the first wall 22 may further be provided with other structural components of the battery device 100. Exemplarily, a pressure relief mechanism may be provided on the first wall 22, and the pressure relief mechanism may be used to release the pressure inside the box body 20.

[0240] According to some embodiments of the present application, please refer to Figure 12 , the beam assembly 21 has a mounting hole 213 penetrating along the third direction z. The main body 31 is connected to the beam assembly 21 and covers the mounting hole 213. The third direction z is parallel to the arrangement direction of the mounting beam 210 and the mounting beam.

[0241] The beam assembly 21 is provided with a mounting hole 213. The mounting hole 213 penetrates the beam assembly 21 along the third direction z. That is to say, the mounting hole 213 extends along the third direction z, and both ends of the mounting hole 213 penetrate the surfaces on both sides of the beam assembly 21 respectively. Or rather, the beam assembly 21 may be a frame structure, and a mounting hole 213 penetrating along the third direction z is formed in the middle thereof.

[0242] The thermal management component 30 may be connected to the beam assembly 21. The main body 31 of the thermal management component 30 may be connected to the beam assembly 21 and close the mounting hole 213, so that the thermal management component 30 and the beam assembly 21 can be integrated into one body.

[0243] The connection structure between the main body 31 and the beam assembly 21 may be various. Exemplarily, the main body 31 may be connected to the beam assembly 21 through structures such as welding connection, bonding, snap connection or bolted connection.

[0244] In the above solution, 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 into one body, improving the structural strength of the battery device 100, reducing the impact of external shocks on the battery device 100, and making the battery device 100 highly reliable; on the other hand, the thermal management component 30 can be used instead of the bottom plate, reducing the number of components of the battery device 100, thereby facilitating the improvement of the mass energy density of the battery device 100.

[0245] According to some embodiments of the present application, please refer to Figure 5 , Figure 13 For Figure 13 is an enlarged view of part C in

[0246] The mounting hole 213 includes a first hole segment 2130 and a second hole segment 2131 arranged along the third direction z. The first hole segment 2130 is located on the side of the second hole segment 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 segments, namely the first hole segment 2130 and the second hole segment 2131, and the first hole segment 2130 is closer to the battery cell assembly 10 in the third direction z than the second hole segment 2131.

[0247] The hole wall surface of the first hole segment 2130 and the hole wall surface of the second hole segment 2131 are connected by a step surface 2132 , and the step surface 2132 is arranged facing the accommodating cavity, that is, the diameter of the first hole segment 2130 is smaller than the diameter of the second hole segment 2131 .

[0248] In some embodiments, the shapes of the first hole segment 2130 and the second hole segment 2131 correspond to the shape of the main body 31. When the main body 31 is rectangular, the first hole segment 2130 and the second hole segment 2131 can be rectangular respectively, and the size of the first hole segment 2130 is smaller than the size of the second hole segment 2131 to form a step surface 2132 between the first hole segment 2130 and the second hole segment 2131.

[0249] In some embodiments, the main body 31 is connected to the step surface 2132 , and the connection relationship between the two includes but is not limited to bonding, welding, riveting or screw connection.

[0250] In some embodiments, the main body 31 may be embedded in the first hole section 2130 , and a surface of the main body 31 facing the battery cell assembly 10 may be flush with a surface of the first hole section 2130 facing away from the second hole section 2131 .

[0251] For example, in Figure 5 In the embodiment, 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, namely the first hole segment 2130 and the second hole segment 2131. Of course, in other embodiments, the number of hole segments of the mounting hole 213 of the stepped hole structure may also be three, four, five, or six, etc. For example, in some embodiments, the mounting hole 213 may further include another hole segment located on the side of the first hole segment 2130 facing away from the second hole segment 2131, or another hole segment located on the side of the second hole segment 2131 facing away from the first hole segment 2130.

[0252] It should be noted that, in some embodiments where the first avoidance portion 40 is disposed on the mounting beam 210 , the adapter 321 may be disposed on the second surface 31 b of the main body 31 , and the adapter head may be located in the second hole section 2131 .

[0253] In the above solution, the mounting hole 213 includes a first hole section 2130 and a second hole section 2131 arranged in the third direction z. The hole wall surfaces of the first hole section 2130 and the second hole section 2131 are connected by a stepped surface 2132, and the stepped surface 2132 faces the accommodation cavity in the third direction z. Among them, by arranging the main body 31 of the heat management component 30 in the first hole section 2130 and abutting against 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 beneficial to reducing the assembly difficulty between the heat management component 30 and the beam assembly 21. On the other hand, the stepped surface 2132 can also play a certain limiting and positioning role for the heat management component 30 in the third direction z, which is beneficial to improving the stability and reliability of the heat management component 30 installed on the beam assembly 21.

[0254] According to some embodiments of the present application, please refer to Figure 13 and Figure 5 , the beam assembly 21 further includes a support beam 214. The support beam 214 is arranged in the second hole section 2131 and divides the second hole section 2131 into at least two sub-through holes. Along the third direction z, the side of the main body 31 facing away from the battery cell assembly 10 is connected to the support beam 214.

[0255] In some embodiments, the mounting beam 210 can be a frame beam structure, which forms a 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 its opposite ends are respectively connected to two opposite parts of the mounting beam 210 along the second direction y.

[0256] In some embodiments, the mounting beam 210 can be arranged in the second hole section 2131 and connected to the hole wall of the second hole section 2131 to divide the mounting hole 213 into two sub-through holes.

[0257] In some embodiments, the connection relationship between the mounting beam 210 and the hole wall of the second hole section 2131 includes but is not limited to bonding, welding, riveting or connection with threaded parts. Or the beam assembly 21 is an integrally formed structure, and when the beam assembly 21 is manufactured, the support beam 214 is formed synchronously.

[0258] The support beam 214 is located on the side of the main body 31 facing away from the battery cell assembly 10 and abuts against the main body 31. That is to say, the main body 31 is located on the side of the support beam 214 facing the battery cell assembly 10, and the main body 31 abuts against the support beam 214 along the third direction z.

[0259] Optionally, the structure and shape of the support beam 214 can be various. Exemplarily, in Figure 13Among them, the support beam 214 is a plate-like structure. It can extend along the first direction x or along the second direction.

[0260] Optionally, the number of support beams 214 disposed in the mounting holes 213 can be one or more. Exemplarily, in Figure 5 Among them, only one support beam 214 is disposed in the mounting hole 213. Of course, in other embodiments, the number of support beams 214 disposed in the mounting hole 213 can also be two, three, four, five, etc. It should be noted that in embodiments where the number of support beams 214 disposed in the mounting hole 213 is multiple, the multiple support beams 214 can be a structure that intersects and is connected to 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.

[0261] In the above solution, by providing 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 cell assembly 10 and stably mount the battery on the power consumption device body; on the other hand, the support beam 214 can also play a certain supporting role for the thermal management component 30, which is beneficial to reducing the risk of deformation of the thermal management component 30 during use, and the support beam 214 can also play a certain protective role for the thermal management component 30, which is beneficial to alleviating the phenomenon of direct collision between the thermal management component 30 and the external environment.

[0262] According to some embodiments of the present application, the beam assembly 21 further includes a second mounting beam 212. The second mounting beam 212 is connected to the battery cell assembly 10. Along the first direction x, the second mounting beam 212 is spaced from the first mounting beam 211, and the battery cell assembly 10 is located between the first mounting beam 211 and the second mounting beam 212.

[0263] In some embodiments, the beam assembly 21 further includes a second mounting beam 212. The second mounting beam 212 can be a beam structural member extending along the second direction y. The second mounting beam 212 is spaced 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 in the first direction x. The connection relationship between the second mounting beam 212 and the battery cell assembly 10 includes but is not limited to bonding, welding, riveting, threaded connection or other connection relationships.

[0264] In the above solution, the first mounting beam 211 and the second mounting beam 212 are arranged at intervals in the first direction x. On the one hand, it can play a role in assembling and positioning the battery cell assembly 10, which is beneficial to reducing the difficulty of assembling the battery cell assembly 10 into the box body 20; on the other hand, it can effectively fix the battery cell assembly 10 on the beam assembly 21, so that the battery cell assembly 10, the mounting beam and the hanging beam 210 are integrated into one, which is beneficial to improving the structural strength of the battery device 100 and can be stably mounted on the body of the electrical device.

[0265] According to some embodiments of the present application, 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 jointly define an accommodation cavity. The first box body 20a includes a beam assembly 21.

[0266] In some embodiments, the box body 20 may include two structural members, and the two structural members include 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 to form an accommodation cavity for accommodating the battery cell assembly 10. In other words, opening one of the first box body 20a and the second box body 20b can expose the accommodation cavity to maintain the battery cell assembly 10.

[0267] The first box body 20a includes a beam assembly 21. It can be understood that in the battery, the main load-bearing structure of the first box body 20a is the first box body 20a. In some embodiments, the first box body 20a can be made of a material with a relatively large structural strength. To improve the mass energy density, the second box body 20b can be made of a material with a relatively small structural strength and a relatively small density. Exemplarily, the first box body 20a is made of steel, and the second box body 20b is made of aluminum.

[0268] According to some embodiments of the present application, please refer to Figure 5 and Figure 3 , Figure 14 is a schematic diagram of the second box body 20b in some embodiments of the present application. The first box body 20a further includes a first wall 22 and a second wall 23. 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 arranged at intervals in the first direction x. 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 arranged at intervals in the second direction y. The third wall 24 and the beam assembly 21 are arranged opposite to each other in the third direction z. The first direction x, the second direction y and the third direction z are perpendicular to each other in pairs.

[0269] In some embodiments, the first box body 20a is similar to a "U" - shaped structure, which includes a beam assembly 21 and a first wall 22 and a second wall 23 arranged on the beam assembly 21. Along the first direction x, the first wall 22 and the second wall 23 are respectively arranged at both ends of the beam assembly 21. Optionally, the first wall 22 and the second wall 23 can be respectively connected to the mounting beam 210. Exemplarily, the connection relationship between the first wall 22 and the beam assembly 21 includes but is not limited to bonding, welding, connection by threaded parts, 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 includes but is not limited to bonding, welding, connection by threaded parts, or the second wall 23 is integrally formed on the beam assembly 21.

[0270] In some embodiments, the second box body 20b is similar to a "U" - shaped structure, which includes a third wall 24 and a fourth wall 25 and a fifth wall 26 arranged on the third wall 24. Along the second direction y, the fourth wall 25 and the fifth wall 26 are respectively arranged on both sides of the third wall 24. Exemplarily, the connection relationship between the fourth wall 25 and the third wall 24 includes but is not limited to bonding, welding, connection by threaded parts, 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 includes but is not limited to bonding, welding, connection by threaded parts, or the fifth wall 26 is integrally formed on the third wall 24.

[0271] In some embodiments, the beam assembly 21 can be regarded as the bottom of the box body 20, or the beam assembly 21 and the thermal management component 30 are integrated into one body 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.

[0272] In some embodiments, the first box body 20a forms an opening in the second direction y. The first box body 20a is connected to 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.

[0273] In the above - mentioned solution, both the first box body 20a and the second box body 20b form a structure similar to a "U". On the one hand, it is convenient for the first box body 20a and the second box body 20b to jointly define an assembly cavity for accommodating the battery cell 11 after being covered with each other. On the other hand, it 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 cell assembly 10 accommodated in the box body 20, which is beneficial to reducing the later maintenance difficulty of the battery device 100.

[0274] According to some embodiments of the present application, the fourth wall 25 and the fifth wall 26 are respectively connected to both sides of the beam assembly 21 along the second direction y.

[0275] In some embodiments, the fourth wall 25 may be connected to the outer side surface of the beam assembly 21 in the second direction y. For example, the inner side surface of the fourth wall 25 is in contact with the outer side surface of the beam assembly 21 in the second direction y to form a sealing surface that is perpendicular to the second direction y.

[0276] In some embodiments, the fifth wall 26 may be connected to the outer side surface of the beam assembly 21 in the second direction y. For example, the inner side surface of the fifth wall 26 is in contact with the outer side surface of the beam assembly 21 in the second direction y to form a sealing surface that is perpendicular to the second direction y.

[0277] In some embodiments, a plurality of connection holes are formed in the outer side surface of the beam assembly 21 in the second direction y. A sealing structure, such as a gasket, etc., is provided between the portions where the first box body 20a and the second box body 20b are connected to each other. The first box body 20a and the second box body 20b are connected to each other through connecting members. Some connecting members can pass through the fourth wall 25 and a part of the corresponding sealing structure to be disposed in the corresponding connection holes, and some connecting members can pass through the fifth wall 26 and a part of the corresponding sealing structure to be disposed in the corresponding connection holes.

[0278] In the above solution, the fourth wall 25 and the fifth wall 26 are respectively connected to both sides of the beam assembly 21 in 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 in the second direction y, thereby improving the space utilization rate of the battery in the second direction y, so that more battery cell assemblies 10 can be accommodated inside the box body 20, and further improving the volume energy density of the battery device 100.

[0279] According to some embodiments of the present application, some embodiments of the present application further provide an electrical device, and the electrical device includes the battery device 100 provided in the first aspect, and the battery device 100 is used to provide electrical energy.

[0280] Among them, the electrical device may be any of the foregoing devices or systems that apply the battery device 100.

[0281] According to some embodiments of the present application, please refer to Figure 14 Figures 2 - 14 , an electrical device is provided.

[0282] The electrical 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 covered with each other, and the first box body 20a and the second box body 20b jointly define an accommodation cavity for accommodating the battery cell assembly 10.

[0283] The first box body 20a and the second box body 20b are respectively in a "U" - shaped 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 along the first direction x on the beam assembly 21. The beam assembly 21, the first wall 22 and the second wall 23 are respectively connected to the second box body 20b to enclose a 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 the second direction y. The third wall 24 and the beam assembly 21 are disposed opposite to each other along the third direction z. In some embodiments, the fourth wall 25 and the fifth wall 26 are respectively connected to the additional sides of the beam assembly 21 along the second direction y.

[0284] 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 along the first direction x on the mounting beam 210. The beam assembly 21 has a mounting hole 213 penetrating along the third direction z. 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 faces away from the receiving 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, and the step surface 2132 faces the receiving cavity.

[0285] The thermal management component 30 includes a main body 31, a lead - out part and a connector. The lead - out part includes a first lead - out part 32 and a second lead - out part 33. The connector includes a first connector 34 and a second connector 35. A flow channel for accommodating a medium is formed inside the thermal management component 30. The main body 31 has a first flow channel 312, the first lead - out part 32 has a second flow channel, the second lead - out part 33 has a third flow channel. The first lead - out part 32 connects the main body 31 and the first connector 34, the second lead - out part 33 connects the main body 31 and the second connector 35. The thermal management component 30 is connected to an external pipeline through the first connector 34 and the second connector 35 to realize the circulation of the medium, so as to perform heat exchange with the battery cell assembly 10 and adjust the temperature of the battery cell assembly 10.

[0286] The main body 31 is connected to the beam assembly 21, overlaps and closes the mounting hole 213. Along the third direction z, one side of the main body 31 facing away from the battery cell assembly 10 abuts against the step surface 2132, and one side of the main body 31 facing away from the second hole section 2131 can support the battery cell assembly 10.

[0287] The connector is located outside the box body 20, and the connector is connected to the main body 31 through the corresponding lead - out part.

[0288] Taking the first joint 34 and the first lead-out portion 32 as an example, the beam assembly 21 is provided with a first avoidance portion 40 , and the first lead-out portion 32 is passed through the first avoidance portion 40 to connect the first joint 34 and the main body 31 .

[0289] Optionally, in some embodiments, the first escape portion 40 is disposed on the first mounting beam 211. The first escape portion 40 may be a first escape groove formed on the first mounting beam 211. The first escape groove is formed by a side of the first mounting beam 211 facing away from the mounting beam 210 and recessed toward the mounting beam 210. The first lead-out portion 32 and the main body 31 are integrally formed. A portion of the first lead-out portion 32 may be disposed in the first escape groove, while a portion of the first lead-out portion 32 is located outside the first escape groove and connected to the main body 31. The other portion of the first lead-out portion 32 may pass through the first wall 22 to connect to the first joint 34 on the outside of the first wall 22.

[0290] Optionally, in some embodiments, a first escape portion 40 is provided on the mounting beam 210. The first escape portion 40 may be a first escape hole formed within the mounting beam 210. The first escape hole is formed within the mounting beam 210. Along the first direction x, a first opening 2100 is formed on a side of the mounting beam 210 facing the battery cell assembly 10. The first opening 2100 communicates with the first escape hole, allowing the end of the first lead portion 32 to pass through and connect to the main body 31. Along the third direction z, a second opening 2101 is formed on a surface of the mounting beam 210 facing the first mounting beam 211. The second opening 2101 communicates with the first escape hole, allowing the end of the first lead portion 32 to pass through and connect to the first connector 34. In some of these embodiments, the first lead-out portion 32 may include an adapter tube 320 and an adapter connector 321. The adapter connector 321 is arranged on a side of the main body 31 that is away from the battery cell assembly 10. Along the first direction x, the opening of the adapter connector 321 is arranged toward the first connector 34. The first avoidance hole extends along the first direction x. The adapter tube 320 is arranged in the first avoidance groove. One end of the adapter tube 320 is inserted into the opening of the adapter connector 321. The other end of the adapter tube 320 is bent along the third direction z and integrally formed to form the first connector 34.

[0291] In the above solution, by providing an avoidance structure on the beam assembly 21 to allow a part of the heat management component 30 to pass through, so as to arrange the joint outside the box body 20. On the one hand, when a medium leakage occurs at the connection position of the joint, it can relieve the phenomenon that the medium enters the box body 20 and directly acts on the battery cell group 11, so as to reduce the risk of corrosion or internal short circuit of the battery cell assembly 10 due to the medium, making the battery device 100 have high reliability. On the other hand, the joint does not occupy the space where the battery cell assembly 10 is located, and the space occupied by the beam assembly 21 itself is used to lead out a part of the heat management component 30 to the outside of the box body 20 to connect the first joint 34, which can reduce the space occupancy rate of the heat management component 30, so that the battery has more space to accommodate the battery cell assembly 10, which is beneficial to improving the volume energy density of the battery device 100.

[0292] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made 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, characterized in that, include: Battery cell assembly; A beam assembly, comprising a first mounting beam and a mounting beam connected to each other, wherein the first mounting beam is used to connect to the battery cell assembly, and the mounting beam is used to connect the battery cell assembly to the electrical device body; a thermal management component comprising a main body, a first lead-out portion, and a first connector, wherein the main body is 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 connector 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 connector; Wherein, the beam assembly is provided with a first avoidance portion, and the first lead-out portion is passed through the first avoidance portion.

2. The battery device according to claim 1, wherein: The first avoidance portion is provided on the first mounting beam.

3. The battery device according to claim 2, characterized in that The first avoidance portion is a first avoidance groove, and the first avoidance groove is formed by a side of the first mounting beam facing away from the mounting beam and recessed toward the mounting beam.

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

5. The battery device according to claim 1, wherein: The first avoidance portion is provided on the mounting beam.

6. The battery device according to claim 5, characterized in that At least a portion of the first lead-out portion is embedded in the mounting beam.

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

8. The battery device according to claim 7, characterized in that The first lead-out portion includes a transition tube and a transition joint. The transition joint is provided on a side of the main body away from the battery cell assembly. The transition tube connects the transition joint and the first joint. At least a portion of the transition tube is embedded in the mounting beam.

9. The battery device according to claim 8, characterized in that Along the direction from the first mounting beam to the mounting beam, the adapter does not extend beyond the surface of the mounting beam facing away from the first mounting beam.

10. The battery device according to claim 1, wherein: The first lead-out portion extends along the first direction.

11. The battery device according to claim 1, wherein: 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.

12. The battery device according to claim 1, wherein: The mounting beam and the first mounting beam are integrally formed, or the mounting beam and the first mounting beam are separate structures.

13. The battery device according to claim 1, wherein: The main body includes a first plate body and a second plate body, wherein the first plate body and the second plate body are stacked and together form a first flow channel for accommodating a medium.

14. The battery device according to claim 1, wherein: Along the third direction, a mounting hole is formed on the side of the mounting beam facing away from the installation beam, and the third direction is parallel to the arrangement direction of the mounting beam and the installation beam.

15. The battery device according to any one of claims 1-14, wherein the battery device includes a box body, an accommodation cavity is provided inside the box body, the accommodation cavity is used to accommodate the battery cell assembly, the box body includes the beam assembly, the first installation beam is located inside the accommodation cavity, and the first joint is located outside the accommodation cavity.

16. The battery device according to claim 15, wherein the box body further includes a first wall, the first joint is located on the side of the first wall facing away from the accommodation cavity, and the first lead-out portion penetrates through the first wall.

17. The battery device according to claim 16, wherein the first wall has a second avoidance portion penetrating along the first direction, the first lead-out portion penetrates through the second avoidance portion, and an adhesive is provided between the inner wall of the second avoidance portion and the first lead-out portion.

18. The battery device according to claim 16, wherein the battery device further includes an electrical connector, which is connected to the battery cell assembly, the first wall is formed with a first through hole, and the electrical connector is installed in the first through hole; the first wall and the first installation beam are arranged at intervals along the first direction, and a part of the electrical connector is located between the first wall and the first installation beam.

19. The battery device according to claim 15, wherein the beam assembly has a mounting hole penetrating along the third direction, the main body is connected to the beam assembly and covers the mounting hole, and the third direction is parallel to the arrangement direction of the mounting beam and the installation beam.

20. The battery device according to claim 19, wherein the mounting hole includes a first hole section and a second hole section arranged along the third direction, the second hole section faces away from the accommodation cavity relative to the second hole section, the hole wall surfaces of the first hole section and the second hole section are connected by a stepped surface, the stepped surface faces the accommodation cavity, the main body is located in the first hole section, and the main body abuts against the stepped surface.

21. The battery device according to claim 20, wherein the beam assembly further includes 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 along the third direction, the side of the main body facing away from the battery cell assembly is connected to the support beam.

22. The battery device according to claim 15, wherein the beam assembly further includes a second installation beam, the second installation beam is connected to the battery cell assembly, and along the first direction, the second installation beam is arranged at intervals with the first installation beam, and the battery cell assembly is located between the first installation beam and the second installation beam.

23. The battery device according to claim 15, wherein The box body includes a first box body and a second box body. The first box body and the second box body are covered with each other and jointly define the accommodation cavity. The first box body includes the beam assembly.

24. The battery device according to 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 the second direction. The third wall and the beam assembly are arranged opposite to each other along the third direction. The first direction, the second direction and the third direction are perpendicular to each other in pairs.

25. The battery device according to claim 24, wherein the fourth wall and the fifth wall are respectively connected to both sides of the beam assembly along the second direction.

26. An electrical device, characterized in that, Comprising the battery device according to any one of claims 1-25, the battery device is used to provide electrical energy.

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