Battery device, battery case, and electric device

Abstract

The embodiment of the application provides a battery device, a battery box and a power utilization device, and belongs to the technical field of batteries.The battery device comprises a frame which is internally hollow and forms a cavity; a plurality of battery monomers which are accommodated in the cavity; a heat management component which is connected with the frame to at least close one end of the frame, and the heat management component comprises a butt joint area, a projection of the butt joint area in a normal direction is located outside the frame; a mounting piece which is mounted on the frame and is located outside the cavity, the mounting piece is oppositely arranged with the butt joint area, and the mounting piece is provided with a avoiding opening on a wall surface opposite to the butt joint area; a pipe joint which is mounted on the mounting piece and is in communication with the heat management component through the avoiding opening; and wherein the avoiding opening is provided with a structure glue which surrounds the pipe joint.According to the battery device of the application, by arranging the mounting piece outside the frame, the corrosion resistance of the pipe joint can be enhanced while reducing the influence on the structural strength of the frame, and the risk of air tightness failure of the pipe joint and the heat management component is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery device, a battery housing, and an electrical device. Background Technology

[0002] Batteries generate high heat density during operation, and thermal management components are typically used to exchange heat between individual battery cells. In related technologies, thermal management components are usually housed within the battery casing, and to prevent corrosion risks associated with external pipe joints, these joints are generally internally mounted. For example, the pipe joint may pass through the front expansion beam inside the casing and extend into the front compartment of the battery casing. However, this method occupies internal space within the casing, leaving room for improvement. Summary of the Invention

[0003] This application provides a battery device, a battery housing, and an electrical device to enhance the corrosion resistance of pipe joints while reducing the space occupied inside the battery housing.

[0004] In a first aspect, embodiments of this application provide a battery device, including:

[0005] The internal hollow frame forms a cavity;

[0006] Multiple battery cells are housed within the cavity;

[0007] A thermal management component is connected to the frame to at least close one end of the frame, and the thermal management component includes a mating area whose projection along the normal direction is located outside the frame;

[0008] The mounting component is installed on the frame and located outside the cavity. The mounting component is disposed opposite to the docking area, and the mounting component has a clearance opening on the wall surface opposite to the docking area.

[0009] A pipe fitting is installed on the mounting component and communicates with the thermal management component through the clearance opening;

[0010] The clearance opening is provided with structural adhesive surrounding the pipe joint.

[0011] In the above technical solution, mounting the thermal management component outside the frame and connecting it to the frame can improve the space utilization of the battery device and facilitate the assembly of the thermal management component with other components of the battery device, thereby effectively reducing the production difficulty and cost of the battery device, which is conducive to the large-scale production and improved production efficiency of the battery device. Furthermore, the mounting component is mounted on the frame and located outside the cavity. The mounting component has a clearance opening on the wall opposite to the thermal management component. The pipe joint is mounted on the mounting component and communicates with the thermal management component through the clearance opening, which can reduce the contact between the pipe joint and the frame, thereby reducing the impact on the structural strength of the frame while enhancing the corrosion resistance of the pipe joint. Simultaneously, the structural adhesive surrounding the pipe joint at the clearance opening can reduce the risk of airtight failure of the pipe joint and the thermal management component.

[0012] In some embodiments, the mounting member forms a cavity, and the cavity has an opening.

[0013] In the above technical solution, the openings are provided on the wall surfaces spaced apart along the second direction. The openings are located near the avoidance openings, which helps to facilitate the smooth progress of the glue application process.

[0014] In some embodiments, the mounting member forms a cavity and has a mounting structure for mounting the pipe fitting on the wall surface opposite to the clearance opening.

[0015] In the above technical solution, the mounting structure can be detachably installed on the mounting component using fasteners to fix the pipe joint to the mounting component.

[0016] In some embodiments, the mounting member has a through hole on the wall surface opposite to the clearance opening, the pipe joint passes through the through hole, and the orthographic projection of the through hole on the wall surface where the clearance opening is located is located within the clearance opening.

[0017] In the above technical solution, the orthographic projection of the through hole along a third direction onto the wall where the clearance is located is located within the clearance, and the projection is spaced apart from the edge of the clearance, which can reduce the interference between the clearance and the pipe joint.

[0018] In some embodiments, the wall of the mounting member having the clearance opening is welded to the thermal management component, and the welding area surrounds the clearance opening.

[0019] In the above technical solution, the welding area surrounds the clearance opening, which can enhance the stability and sealing performance of the welding area, reduce the uneven stress distribution caused by external forces, and increase the connection strength between the mounting component and the thermal management component, thereby reducing the negative impact caused by temperature changes or pressure fluctuations.

[0020] In some embodiments, the shortest distance from the clearance opening to the edge of the mounting member is a, satisfying: 4mm≤a≤25mm.

[0021] In the above technical solution, the shortest distance from the clearance opening to the edge of the mounting component is within an appropriate range, which can improve the stability of the welding area and reduce the interference between the clearance opening and the pipe joint.

[0022] In some embodiments, the wall surface of the mounting member with the clearance opening is provided with a fixing structure, and the mounting member is connected to the thermal management component through the fixing structure.

[0023] In the above technical solution, the mounting component can be detachably installed on the thermal management component through the fixing structure, thereby reducing the displacement or loosening of the thermal management component during operation.

[0024] In some embodiments, the mounting element is arranged on the outside of the end beam of the frame.

[0025] In the above technical solution, the mounting component is arranged on the outside of the end beam of the frame, which can reduce the modification of the frame structure and improve the structural strength of the frame.

[0026] In some embodiments, the frame is provided with an outwardly open mounting slot, and a portion of the mounting element is located in the mounting slot.

[0027] In the above technical solution, a portion of the mounting component is located in the mounting groove, and the frame and the thermal management component clamp the mounting component in the third direction, which can increase the connection strength between the mounting component and the frame.

[0028] In some embodiments, the mounting element is welded together at the region where it intersects with the outer side of the frame.

[0029] Secondly, embodiments of this application provide a battery housing, comprising:

[0030] A hollow frame that forms a cavity for housing individual battery cells;

[0031] A thermal management component is connected to the frame to at least close one end of the frame, and the thermal management component includes a mating area whose projection along the normal direction is located outside the frame;

[0032] The mounting component is installed on the frame and located outside the cavity. The mounting component is disposed opposite to the docking area, and the mounting component has a clearance opening on the wall surface opposite to the docking area.

[0033] A pipe fitting is installed on the mounting component and communicates with the thermal management component through the clearance opening;

[0034] The clearance opening is provided with structural adhesive surrounding the pipe joint.

[0035] Thirdly, embodiments of this application provide an electrical device, including: a battery device as described in any one of the above-mentioned embodiments, the battery device being used to store or provide electrical energy. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0038] Figure 2 Exploded views of the structure of the battery device provided in some embodiments of this application;

[0039] Figure 3 This is one of the structural schematic diagrams of the battery housing provided in some embodiments of this application;

[0040] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0041] Figure 5 This is one of the structural schematic diagrams of the mounting component of the battery device provided in some embodiments of this application;

[0042] Figure 6 This is a second schematic diagram of the structure of the mounting component for the battery device provided in some embodiments of this application;

[0043] Figure 7 This is a second schematic diagram of the structure of the battery housing provided in some embodiments of this application;

[0044] Figure 8 This is the third schematic diagram of the structure of the battery housing provided in some embodiments of this application;

[0045] Figure 9 for Figure 8 Sectional view at point BB;

[0046] Figure 10 for Figure 9 A magnified view of a section at point C.

[0047] Figure label:

[0048] 1000 vehicles;

[0049] Battery device 100;

[0050] Box 10, first box body 11, second box body 12;

[0051] 20 battery cells;

[0052] Frame 30, end crossbeam 310, mounting groove 320;

[0053] Cavity 40;

[0054] Thermal management component 50, docking area 510;

[0055] Mounting component 60, clearance opening 610, cavity 620, mounting structure 640, through hole 650, fixing structure 660;

[0056] Pipe fittings 70, structural adhesive 80, base plate 90;

[0057] Controller 200, Motor 300;

[0058] First direction X, second direction Y, third direction Z. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0061] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0062] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0064] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0065] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0066] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0067] Battery cells can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to any of these. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to any of these types either.

[0068] A battery cell includes a casing, electrode components, and electrolyte. The casing houses the electrode components and electrolyte. The electrode components consist of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode components. The positive electrode includes a positive current collector and a positive active material layer. The positive current collector includes a current collector body and a positive electrode tab. The positive active material layer is coated on the surface of the current collector body, while the positive electrode tab is not coated with the positive active material layer and protrudes from the current collector body. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative current collector includes a current collector body and a negative electrode tab. The negative active material layer is coated on the surface of the current collector body, while the negative electrode tab is not coated with the negative active material layer and protrudes from the current collector body. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0069] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0070] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft, including aircraft, rockets, space shuttles, and spacecraft. Individual battery cells are used to store or provide electrical energy.

[0071] In related technologies, to ensure sufficient power in a battery device, multiple battery cells are typically stacked within the battery casing. However, these individual cells generate significant heat during continuous charging and discharging, causing the internal temperature of the battery device to rise. The stacked structure exacerbates this phenomenon, severely impacting the battery device's performance and lifespan, and potentially posing significant safety hazards for consumers. Therefore, existing technologies typically incorporate a thermal management system within the battery device to cool the individual battery cells, employing thermal management components to dissipate heat.

[0072] However, traditional liquid cooling systems typically employ embedded thermal management components, which are usually housed within the battery pack. To prevent corrosion risks associated with external pipe joints, these joints are generally internally mounted. For example, the pipe joints may penetrate the front expansion beam within the pack and extend into the front compartment of the battery pack. However, this approach occupies internal space within the pack, leaving room for improvement.

[0073] In addition, in related technologies, thermal management components are also set outside the battery pack, with external pipe joints connected to the thermal management components via mounting parts. However, the contact surfaces between the thermal management components and the mounting parts are usually brazed, making it difficult to test the airtightness of the contact surfaces. Moreover, the test can only be performed after the battery pack is assembled. If the test structure is not ideal, the battery pack is difficult to repair. This application provides structural adhesive around the pipe joint at the clearance opening, which can eliminate the airtightness test step and reduce the manufacturing difficulty of the battery pack.

[0074] Based on the above considerations, in order to solve the problem caused by the thermal management component for cooling the battery cells being located inside the battery box, this application designs a battery device, including a frame, multiple battery cells, a thermal management component, a mounting component, and a pipe connector. The hollow frame forms a cavity, in which multiple battery cells are housed. The thermal management component is connected to the frame to at least close one end of the frame. The thermal management component includes a docking area, the projection of which along the normal direction is located outside the frame. The mounting component is mounted on the frame and located outside the cavity. The mounting component is disposed opposite to the docking area. The mounting component has a clearance opening on the wall surface opposite to the docking area. The pipe connector is mounted on the mounting component and communicates with the thermal management component through the clearance opening. Structural adhesive is provided around the pipe connector at the clearance opening.

[0075] In this type of battery device, the thermal management components are installed outside the frame, and the pipe joints are connected to the thermal management components through clearance openings. This structure can improve the space utilization of the battery device and facilitate the assembly of the battery thermal management system with the battery cells, thereby effectively reducing the production difficulty and cost of the battery device. It is conducive to the large-scale production of the battery device and improves the production efficiency of the battery device. On the other hand, this structure can improve the corrosion resistance of the pipe joints and the structural strength of the battery box, while reducing the risk of airtight failure of the pipe joints and thermal management components.

[0076] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0077] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0078] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0079] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0080] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0081] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0082] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0083] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0084] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0085] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft. The battery device is used to store or provide electrical energy.

[0086] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is installed inside the vehicle, and the battery device 100 can be located at the bottom, front, or rear of the vehicle. The battery device 100 can be used to power the vehicle; for example, the battery device 100 can serve as the vehicle's operating power source. The vehicle may also 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, to meet the power needs of the vehicle during starting, navigation, and driving.

[0087] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0088] Please refer to Figure 2 , Figure 2This is an exploded view of the structure of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a plurality of battery cells 20, which are housed within the housing 10. The housing 10 provides assembly space for the battery cells 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first housing body 11 and a second housing body 12, which overlap each other, and together define an assembly space for accommodating the battery cells 20. The second housing body 12 may be a hollow structure open at one end, and the first housing body 11 may be a plate-like structure, with the first housing body 11 covering the open side of the second housing body 12, so that the first housing body 11 and the second housing body 12 together define the assembly space; alternatively, the first housing body 11 and the second housing body 12 may both be hollow structures open on one side, with the open side of the first housing body 11 covering the open side of the second housing body 12. Of course, the box 10 formed by the first box body 11 and the second box body 12 can be of various shapes, such as cylinder, cuboid, etc.

[0089] In the battery device 100, multiple battery cells 20 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0090] Please refer to Figure 2 , Figure 2 This is an exploded view of the structure of a battery device 100 provided in some embodiments of this application. The battery device 100 includes multiple rows of battery cells 20, which are arranged along a first direction X. Each row of battery cells 20 includes multiple battery cells 20 arranged along a second direction Y. The first direction X and the second direction Y are the length direction and the width direction of the housing 10, respectively, and the first direction X and the second direction Y are perpendicular to each other.

[0091] According to some embodiments of this application, refer to Figure 2 Please refer to further details. Figure 3 and Figure 4 , Figure 3 This is one of the structural schematic diagrams of the battery housing 10 provided in some embodiments of this application. Figure 4 for Figure 3A partial enlarged view at point A. This application provides a battery device 100, including a frame 30, a plurality of battery cells 20, a thermal management component 50, a mounting member 60, and a pipe connector 70. The hollow frame 30 forms a cavity 40, in which the plurality of battery cells 20 are housed. The thermal management component 50 is connected to the frame 30 to at least close one end of the frame 30, and the thermal management component 50 includes a mating area 510. The projection of the mating area 510 along the normal direction is located outside the frame 30. The mounting member 60 is mounted on the frame 30 and located outside the cavity 40. The mounting member 60 is disposed opposite to the mating area 510. The mounting member 60 has a clearance opening 610 on the wall surface opposite to the mating area 510. The pipe connector 70 is mounted on the mounting member 60 and communicates with the thermal management component 50 through the clearance opening 610. A structural adhesive 80 is provided around the pipe connector 70 at the clearance opening 610.

[0092] The frame 30 is mainly used to provide structural support for the battery device 100 and has good structural strength and sealing. The frame 30 is hollow inside, which can form a cavity 40 for accommodating and fixing multiple battery cells 20, thereby reducing the displacement or damage of the battery cells 20 during use.

[0093] The frame 30 may include multiple side beams connected end to end to form a rectangular frame 30. For ease of explanation, the height direction of the frame 30 is defined as the third direction Z. The third direction Z is perpendicular to the first direction X and the second direction Y. The frame 30 forms openings at both ends in the third direction Z. The cavity 40 formed by the frame 30 is open at both ends in the third direction Z, and the normal direction of the docking area 510 is the third direction Z.

[0094] For example, the frame 30 may be made of a material with high strength and durability, such as aluminum alloy, carbon fiber or other composite materials, to maintain the structural stability of the battery device 100 during use.

[0095] The thermal management component 50 is mounted outside the frame 30 and connected to the frame 30. Specifically, the thermal management component 50 can be mounted at the opening formed by the frame 30, and the thermal management component 50 closes at least one open end of the frame 30 to form the housing 10 of the battery device 100.

[0096] For example, the housing 10 of the battery device 100 may include a top cover, a frame 30, a bottom plate 90, and a thermal management component 50. The top cover, the bottom plate 90, and the thermal management component 50 are respectively connected to the frame 30, so that a closed cavity 40 is formed inside the housing 10 to accommodate multiple battery cells 20. At this time, the bottom plate 90 is located outside the thermal management component 50, and the thermal management component 50 directly exchanges heat with the battery cells 20.

[0097] The thermal management component 50 may include a docking area 510. The projection of the docking area 510 along the normal direction is located outside the frame 30. The projections of other areas of the thermal management component 50, excluding the docking area 510, along the normal direction are located inside the frame 30. The other areas of the thermal management component 50, excluding the docking area 510, are provided with flow channels for the flow of cooling medium to achieve heat exchange between the battery cell 20 and the thermal management component 50, thereby cooling the battery cell 20.

[0098] For example, the cooling medium can be water or a mixture of ethylene glycol, etc.

[0099] The inlet and outlet of the flow channel are arranged at intervals in the width direction of the heat management component 50, which is the second direction Y. Both the inlet and outlet of the flow channel are connected to the pipe joint 70, which helps the cooling medium in the flow channel to carry out effective heat exchange.

[0100] In addition, the mounting component 60 is installed on the frame 30 and is located outside the cavity 40. The mounting component 60 and the docking area 510 are arranged opposite each other along the third direction Z. The mounting component 60 is mainly used to install the pipe connector 70. Specifically, the mounting component 60 can be a hollow profile block, including two walls spaced apart along the third direction Z. The mounting component 60 and the thermal management component 50 are provided with a clearance opening 610 on the wall opposite each other along the third direction Z. The pipe connector 70 extends along the third direction Z, and one end of the pipe connector 70 is connected to the thermal management component 50 through the clearance opening 610. The other end of the pipe connector 70 passes through the mounting component 60 and is connected to the external pipeline.

[0101] Meanwhile, structural adhesive 80 is provided around the pipe joint 70 at the clearance opening 610. The structural adhesive 80 is mainly used to maintain the sealing performance of the connection between the pipe joint 70 and the thermal management component 50, reduce the risk of cooling medium leakage and corrosion caused by air or water accumulation. The structural adhesive 80 surrounds the pipe joint 70 and can form a continuous sealing layer at the clearance opening 610, thereby providing uniform sealing pressure.

[0102] For example, structural adhesive 80 may be a self-leveling structural adhesive 80 made of high-performance silicone, polyurethane, fluororubber or other adaptable polymer materials.

[0103] Structural adhesive 80 has a certain degree of flexibility, which can adapt to the slight deformation or expansion and contraction caused by temperature changes between pipe joint 70 and thermal management component 50, thereby reducing the risk of cracks and leaks.

[0104] For example, the mounting component 60 and the frame 30 are two independent parts. The mounting component 60 is installed on the frame 30 by means of connection such as welding, threaded connection or bonding, thereby increasing the connection strength between the mounting component 60 and the frame 30.

[0105] In some embodiments, when the mounting member 60 and the frame 30 are two separate components, the mounting member 60 has various structural forms, including but not limited to:

[0106] Example 1: The projection of the mounting component 60 along the third direction Z overlaps with the projection of the frame 30 along the third direction Z.

[0107] In this embodiment, the end of the thermal management component 50 is connected to the pipe joint 70, and the projection of the mounting member 60 along the third direction Z is located within the projection of the end of the thermal management component 50 along the third direction Z. The side beam in the frame 30, which is corresponding to the end of the thermal management component 50 along the third direction Z, has a mounting groove 320 on the outer side of its bottom. The mounting groove 320 opens on the side facing the thermal management component 50 and the mounting member 60, respectively. The inner side of the bottom of the side beam protrudes into the cavity 40. A part of the mounting member 60 extends into the mounting groove 320 and is connected to the frame 30 by welding.

[0108] The welding area between the mounting component 60 and the frame 30 includes the contact surface between the mounting component 60 and the mounting groove 320. For example, the upper surface of the part of the mounting component 60 that extends into the mounting groove 320 contacts and welds with the upper wall surface of the mounting groove 320 to form a welding area.

[0109] Example 2: The projection of the mounting component 60 along the third direction Z does not overlap with the projection of the frame 30 along the third direction Z.

[0110] In this embodiment, the end of the thermal management component 50 is connected to the pipe joint 70, and the projection of the mounting member 60 along the third direction Z is located within the projection of the end of the thermal management component 50 along the third direction Z. The side beams in the frame 30 corresponding to the end of the thermal management component 50 along the third direction Z are connected to the mounting member 60 by welding. All parts of the mounting member 60 are located outside the frame 30.

[0111] The welding area between the mounting component 60 and the frame 30 includes the contact surface between the mounting component 60 and the frame 30. For example, one side of the mounting component 60 contacts and welds with the frame 30 to form a welding area.

[0112] According to the battery device 100 provided in the embodiments of this application, the thermal management component 50 is installed outside the frame 30 and connected to the frame 30, which can improve the space utilization of the battery device 100 and facilitate the assembly of the thermal management component 50 with other components of the battery device 100. This effectively reduces the production difficulty and cost of the battery device 100, and is conducive to the large-scale production and improved production efficiency of the battery device 100. In addition, the mounting component 60 is installed on the frame 30 and located outside the cavity 40. The mounting component 60 has a clearance opening 610 on the wall surface opposite to the thermal management component 50. The pipe joint 70 is installed on the mounting component 60 and communicates with the thermal management component 50 through the clearance opening 610. This can reduce the contact between the pipe joint 70 and the frame 30, thereby reducing the impact on the structural strength of the frame 30 while enhancing the corrosion resistance of the pipe joint 70. At the same time, a structural adhesive 80 is provided around the pipe joint 70 at the clearance opening 610, which can reduce the risk of airtight failure of the pipe joint 70 and the thermal management component 50.

[0113] According to some embodiments of this application, please refer to Figure 4 and Figure 5 As shown, Figure 5 This is one of the structural schematic diagrams of the mounting member 60 of the battery device 100 provided in some embodiments of this application. The mounting member 60 forms a cavity 620, and the cavity 620 has an opening.

[0114] The mounting component 60 can be a box-shaped structure with an internal cavity 620. The mounting component 60 includes upper and lower walls spaced apart along a third direction Z. The mounting component 60 has a clearance opening 610 on the wall near the thermal management component 50, and an opening on the wall adjacent to the clearance opening 610.

[0115] The wall surface adjacent to the clearance opening 610 on the mounting member 60 includes wall surfaces spaced apart along the first direction X and wall surfaces spaced apart along the second direction Y. The mounting member 60 is mounted on one end of the frame along the first direction X. One of the wall surfaces spaced apart along the first direction X is welded to the frame. An opening is provided on the wall surface spaced apart along the second direction Y. At the same time, a structural adhesive 80 surrounding the pipe joint 70 is provided at the clearance opening 610. The structural adhesive 80 can be provided at the clearance opening 610 through the opening.

[0116] In addition, the distance from the clearance opening 610 to the edge of the mounting member 60 along the second direction Y is greater than the distance from the clearance opening 610 to the edge of the mounting member 60 along the first direction X. Openings are provided on the wall surface that are spaced apart along the second direction Y. The openings are located close to the clearance opening 610, which helps to facilitate the smooth progress of the glue application process.

[0117] According to some embodiments of this application, refer to Figure 4 and Figure 5The mounting component 60 forms a cavity 620, and a mounting structure 640 for mounting a pipe joint 70 is provided on the wall opposite to the relief opening 610.

[0118] The mounting component 60 can be a box-shaped structure with an internal cavity 620. The mounting component 60 includes upper and lower walls spaced apart along a third direction Z. The wall of the mounting component 60 near the thermal management component 50 is provided with a clearance opening 610. The wall opposite to the clearance opening 610 is provided with a mounting structure 640 for mounting the pipe connector 70. The mounting structure 640 is located on the outer side of the wall of the mounting component 60 and is used to fix the pipe connector 70 to the mounting component 60.

[0119] The mounting structure 640 can be detachably mounted to the mounting member 60 by means of fasteners, and the mounting structure 640 is provided with a round hole through which the pipe connector 70 passes.

[0120] For example, mounting structure 640 includes, but is not limited to, flanges.

[0121] According to some embodiments of this application, see Figures 4-6 As shown, Figure 6 This is a second schematic diagram of the structure of the mounting member 60 of the battery device 100 provided in some embodiments of this application. The mounting member 60 has a through hole 650 on the wall surface opposite to the relief opening 610. The pipe connector 70 passes through the through hole 650, and the orthographic projection of the through hole 650 on the wall surface where the relief opening 610 is located is located inside the relief opening 610.

[0122] Mounting member 60 may include upper and lower wall surfaces spaced apart along a third direction Z, wherein the wall surface of mounting member 60 near thermal management component 50 is provided with a clearance opening 610, the wall surface of mounting member 60 opposite to clearance opening 610 is provided with a through hole 650, and the outer side of the wall surface opposite to clearance opening 610 is provided with a mounting structure 640 for mounting pipe connector 70.

[0123] The orthographic projection of the mounting structure 640 along the third direction Z is entirely located on the mounting part 60 and does not exceed the edge of the through hole 650. At the same time, the pipe joint 70 passes through the through hole 650 and the mounting structure 640 in sequence.

[0124] In addition, the orthographic projection of the through hole 650 along the third direction Z onto the wall where the relief opening 610 is located is within the relief opening 610, and the projection is spaced apart from the edge of the relief opening 610, which can reduce the interference between the relief opening 610 and the pipe joint 70.

[0125] According to some embodiments of this application, refer to Figures 5-7 , Figure 7 This is a second structural schematic diagram of the battery housing 10 provided in some embodiments of this application. The wall surface of the mounting member 60, which has a clearance opening 610, is welded to the thermal management component 50, and the welding area surrounds the clearance opening 610.

[0126] The lower wall of the mounting component 60 is welded to the thermal management component 50, and the lower wall is provided with a clearance opening 610. The pipe connector 70 can be connected to the thermal management component 50 through the clearance opening 610. The portion of the pipe connector 70 at the clearance opening 610 is located within the clearance opening 610 along the third direction Z. That is, after the pipe connector 70 is connected to the thermal management component 50, the pipe connector 70 and the clearance opening 610 are spaced apart in the horizontal direction, which can reduce interference and unnecessary physical collisions in the interaction area between the thermal management component 50 and the pipe connector 70.

[0127] The welding area surrounds the relief opening 610, that is, the welding area around the relief opening 610 is set in a shape that surrounds the relief opening 610. This can enhance the stability and sealing performance of the welding area, reduce the uneven stress distribution caused by external forces, and also increase the connection strength between the mounting part 60 and the thermal management part 50, reducing the negative impact caused by temperature changes or pressure fluctuations.

[0128] According to some embodiments of this application, refer to Figure 5 and Figure 6 The shortest distance from the clearance 610 to the edge of the mounting part 60 is a, which satisfies: 4mm≤a≤25mm.

[0129] The pipe joints 70 are connected to the thermal management component 50 and are respectively connected to the inlet and outlet of the thermal management component 50. The pipe joints 70 are spaced apart along the second direction Y. That is, the length of the clearance port 610 along the second direction Y is greater than the length of the clearance port 610 along the first direction X. The distance from the clearance port 610 along the second direction Y to the edge of the mounting component 60 is the shortest distance from the clearance port 610 to the edge of the mounting component 60.

[0130] It should be noted that the shortest distance from the clearance 610 to the edge of the mounting part 60 has a certain impact on the stability of the welding between the mounting part 60 and the thermal management component 50, as well as the structural strength of the mounting part 60.

[0131] If the shortest distance from the clearance 610 to the edge of the mounting part 60 is too small, the welding area will be too small, which will restrict the welding process, thereby reducing the strength and sealing of the weld and increasing the risk of welding defects.

[0132] If the shortest distance from the clearance 610 to the edge of the mounting part 60 is too large, the length of the clearance 610 along the second direction Y is too small, which may lead to interference between the clearance 610 and the pipe joint 70, thereby increasing the risk of airtight failure of the pipe joint 70.

[0133] Understandably, having the shortest distance from the clearance 610 to the edge of the mounting piece 60 within an appropriate range can improve the stability of the welding area and reduce interference between the clearance 610 and the pipe fitting 70.

[0134] According to some embodiments of this application, please continue to refer to Figure 4 As shown, the mounting component 60 has a clearance opening 610 on its wall surface and a fixing structure 660. The mounting component 60 is connected to the thermal management component 50 through the fixing structure 660.

[0135] Mounting member 60 includes upper and lower walls spaced apart along a third direction Z. Mounting member 60 has a fixing structure 660 on the wall near thermal management component 50. Mounting member 60 can be detachably mounted to thermal management component 50 through fixing structure 660, thereby reducing displacement or loosening of thermal management component 50 during operation.

[0136] For example, the fixing structure 660 includes, but is not limited to, fasteners.

[0137] In some embodiments, the mounting component 60 can be arranged in various ways, including but not limited to:

[0138] Example 1: Mounting component 60 is arranged on the outside of the end beam 310 of frame 30.

[0139] like Figure 3 and Figure 4 As shown, specifically, the frame 30 may include a plurality of side beams connected end to end, wherein the side beams spaced apart along the first direction X are the end crossbeams 310 of the frame 30, and a plurality of battery cells 20 are located on the inner side of the end crossbeams 310 along the first direction X.

[0140] When the mounting component 60 is arranged on the outside of the end beam 310 along the first direction X, the entire part of the mounting component 60 is located outside the frame 30. At this time, the projection of the mounting component 60 along the third direction Z does not overlap with the projection of the frame 30 along the third direction Z.

[0141] Understandably, the mounting component 60 is arranged on the outside of the end beam 310 of the frame 30, which can reduce the modification of the frame 30 structure and improve the structural strength of the frame 30.

[0142] Example 2: The frame 30 has an outwardly open mounting slot 320, and a portion of the mounting component 60 is located in the mounting slot 320.

[0143] like Figures 8-10 As shown, Figure 8 This is the third of several schematic diagrams showing the structure of the battery housing 10 provided in some embodiments of this application. Figure 9 for Figure 8 Sectional view at point BB. Figure 10 for Figure 9 A magnified view of a section at point C.

[0144] The frame 30 may include a plurality of side beams connected end to end, wherein the side beams spaced apart along the first direction X are the end crossbeams 310 of the frame 30, a plurality of battery cells 20 are located on the inner side of the end crossbeams 310 along the first direction X, and the bottom of the end crossbeams 310 along the outer side of the first direction X is provided with an outwardly open mounting groove 320, and a part of the mounting member 60 is located in the mounting groove 320.

[0145] When a portion of the mounting member 60 extends into the outwardly open mounting groove 320 on the frame 30, the projection of the mounting member 60 along the third direction Z overlaps with the projection of the side beam located outside the end beam 310 of the frame 30 along the third direction Z, and the overlapping portion of the projection is spaced apart from the edge of the projection of the mounting member 60 along the first direction X.

[0146] In addition, the end of the mounting part 60 that extends into the mounting groove 320 is spaced apart from the wall of the mounting groove 320 along the first direction X, which can reserve installation allowance, thereby reducing the assembly tolerance requirements between the mounting part 60 and the mounting groove 320.

[0147] It is understandable that a portion of the mounting component 60 is located in the mounting slot 320, and the frame 30 and the thermal management component 50 clamp the mounting component 60 in a third-direction Z-axis, which can increase the connection strength between the mounting component 60 and the frame 30.

[0148] According to some embodiments of this application, refer to Figure 4 The mounting component 60 is welded to the outer side of the frame 30 at the area where it intersects.

[0149] The frame 30 may include multiple side beams connected end to end to form a cavity 40. The mounting member 60 is installed on the frame 30 and is located outside the cavity 40, that is, the mounting member 60 is installed on the outer side of the frame 30.

[0150] Mounting member 60 includes wall surfaces spaced apart along a first direction X. The wall surfaces of mounting member 60 can be connected to the outer surface of frame 30 by welding, thereby mounting member 60 to frame 30.

[0151] According to some embodiments of this application, see Figures 3-10As shown, this application also provides a battery housing 10, including a frame 30, a thermal management component 50, a mounting component 60, and a pipe connector 70. The hollow frame 30 forms a cavity 40 for accommodating multiple battery cells 20. The thermal management component 50 is connected to the frame 30 to at least close one end of the frame 30. The thermal management component 50 includes a docking area 510, the projection of which along the normal direction is located outside the frame 30. The mounting component 60 is mounted on the frame 30 and located outside the cavity 40. The mounting component 60 is disposed opposite to the docking area 510. The mounting component 60 has a clearance opening 610 on the wall surface opposite to the docking area 510. The pipe connector 70 is mounted on the mounting component 60 and communicates with the thermal management component 50 through the clearance opening 610. A structural adhesive 80 surrounds the pipe connector 70 at the clearance opening 610.

[0152] In some embodiments, the housing 10 may include a top cover, a frame 30, a bottom plate 90, and a thermal management component 50. The top cover, bottom plate 90, and thermal management component 50 are respectively connected to the frame 30, so that a closed cavity 40 is formed inside the housing 10 to accommodate multiple battery cells 20. At this time, the thermal management component 50 is connected to the frame 30 and installed on the inner side of the bottom plate 90. The thermal management component 50 directly exchanges heat with the battery cells 20. A mounting member 60 is installed on the frame 30, and a pipe connector 70 is installed on the mounting member 60. Both the mounting member 60 and the pipe connector 70 are located outside the cavity 40.

[0153] In addition, the mounting component 60 is installed on the frame 30 and is located outside the cavity 40. It is mainly used to install the pipe connector 70. Specifically, the mounting component 60 can be a hollow profile block, including two walls spaced apart along the third direction Z. At the same time, the mounting component 60 and the thermal management component 50 are provided with a clearance opening 610 on the wall opposite to each other along the third direction Z. The pipe connector 70 extends along the third direction Z, and one end of the pipe connector 70 is connected to the thermal management component 50 through the clearance opening 610. The other end of the pipe connector 70 passes through the mounting component 60 and is connected to the external pipeline.

[0154] Meanwhile, structural adhesive 80 is provided around the pipe joint 70 at the clearance opening 610. The structural adhesive 80 is mainly used to maintain the sealing performance of the connection between the pipe joint 70 and the thermal management component 50, reduce the risk of cooling medium leakage and air entering the thermal management component 50. The structural adhesive 80 surrounds the pipe joint 70 and can form a continuous sealing layer at the clearance opening 610, thereby providing uniform sealing pressure.

[0155] According to some embodiments of this application, this application also provides an electrical device including a battery device 100 of any of the above schemes, and the battery device 100 is used to provide electrical energy to the electrical device.

[0156] The power supply device can be any of the aforementioned devices or systems that utilize battery device 100.

[0157] According to some embodiments of this application, see Figures 3-10 As shown, this application provides a battery device 100, including a frame 30, a plurality of battery cells 20, a thermal management component 50, a mounting member 60, and a pipe connector 70. The frame 30 forms a cavity 40, in which the plurality of battery cells 20 are housed. The thermal management component 50 is mounted outside and connected to the frame 30. The mounting member 60 is mounted on the frame 30 and located outside the cavity 40. The mounting member 60 has a clearance opening 610 on its wall surface opposite to the thermal management component 50. The pipe connector 70 is mounted on the mounting member 60 and communicates with the thermal management component 50 through the clearance opening 610. Structural adhesive 80 surrounds the pipe connector 70 at the clearance opening 610. The mounting member 60 forms a cavity 620 and has a mounting structure 640 for mounting the pipe connector 70 on its wall surface opposite to the clearance opening 610. Mounting member 60 has a through hole 650 on the wall surface opposite to the clearance opening 610. Pipe connector 70 passes through the through hole 650, and the orthographic projection of the through hole 650 onto the wall surface where the clearance opening 610 is located lies within the clearance opening 610. Mounting member 60 is arranged on the outer side of the end beam 310 of frame 30. Frame 30 has an outwardly open mounting groove 320, and a portion of mounting member 60 is located in the mounting groove 320. Mounting member 60 is welded to the outer surface of frame 30 at the intersection point.

[0158] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0159] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0160] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized in that, include: The internal hollow frame forms a cavity; Multiple battery cells are housed within the cavity; A thermal management component is connected to the frame to at least close one end of the frame, and the thermal management component includes a mating area whose projection along the normal direction is located outside the frame; The mounting component is installed on the frame and located outside the cavity. The mounting component is disposed opposite to the docking area, and the mounting component has a clearance opening on the wall surface opposite to the docking area. A pipe fitting is installed on the mounting component and communicates with the thermal management component through the clearance opening; The clearance opening is provided with structural adhesive surrounding the pipe joint.

2. The battery device according to claim 1, characterized in that, The mounting component forms a cavity, and the cavity has an opening.

3. The battery device according to claim 1 or 2, characterized in that, The mounting component forms a cavity, and a mounting structure for mounting the pipe joint is provided on the wall surface opposite to the clearance opening.

4. The battery device according to claim 3, characterized in that, The mounting component has a through hole on the wall surface opposite to the clearance opening, the pipe joint passes through the through hole, and the orthographic projection of the through hole on the wall surface where the clearance opening is located is located inside the clearance opening.

5. The battery device according to any one of claims 1-4, characterized in that, The wall surface of the mounting component with the clearance opening is welded to the thermal management component, and the welding area surrounds the clearance opening.

6. The battery device according to claim 5, characterized in that, The shortest distance from the clearance opening to the edge of the mounting component is a, which satisfies: 4mm≤a≤25mm.

7. The battery device according to any one of claims 1-6, characterized in that, The mounting component has a fixing structure on the wall surface where the clearance opening is provided, and the mounting component is connected to the thermal management component through the fixing structure.

8. The battery device according to any one of claims 1-7, characterized in that, The mounting components are arranged on the outside of the end beams of the frame.

9. The battery device according to any one of claims 1-7, characterized in that, The frame has an outwardly open mounting slot, and a portion of the mounting component is located in the mounting slot.

10. The battery device according to any one of claims 1-7, characterized in that, The mounting component is welded to the outer surface of the frame at the location where it intersects with the frame.

11. A battery housing, characterized in that, include: A hollow frame that forms a cavity for housing individual battery cells; A thermal management component is connected to the frame to at least close one end of the frame, and the thermal management component includes a mating area whose projection along the normal direction is located outside the frame; The mounting component is installed on the frame and located outside the cavity. The mounting component is disposed opposite to the docking area, and the mounting component has a clearance opening on the wall surface opposite to the docking area. A pipe fitting is installed on the mounting component and communicates with the thermal management component through the clearance opening; The clearance opening is provided with structural adhesive surrounding the pipe joint.

12. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1-10, wherein the battery device is used to store or provide electrical energy.

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