Battery device and electric device

Abstract

The utility model relates to the field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box body, a heat management component and an adapter. The box body comprises a frame. The heat management component comprises a main body part, a convex part and an interface, the main body part covers the frame, the peripheral edge of the main body part is in sealed connection with the frame, the main body part and the frame jointly define a containing space for containing the battery monomers, the convex part is connected to the peripheral side of the main body part and protrudes out of the peripheral surface of the frame, and the interface is formed in the convex part. And the adapters and the interfaces are in one-to-one correspondence and sealed insertion. The box body further comprises an installation base, the installation base is arranged on the peripheral face of the frame and right faces the protruding part, the side, facing the protruding part, of the installation base is connected with the protruding part in a sealed mode, and the side, facing the frame, of the installation base is connected with the frame in a sealed mode. Based on the above structure, even if the liquid leakage phenomenon occurs accidentally at the part between the adapter and the interface, the liquid leakage phenomenon can be promoted to occur outside the box body, so that the risk of failure caused by insulation and voltage resistance failure is reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery device and an electrical device. Background Technology

[0002] In some cases, the battery device includes a housing, a battery cell assembly, a thermal management component, a connecting hose, and two straight connectors. The battery cell assembly and the thermal management component are housed within the housing. The thermal management component engages with the battery cell assembly for heat exchange. The thermal management component has two interfaces. The two straight connectors are installed through the walls of the housing. One straight connector, located at its end within the housing, is connected to one of the interfaces via a connecting hose for the inflow of heat exchange medium. The other straight connector, located at its end within the housing, is connected to the other interface via a connecting hose for the outflow of heat exchange medium.

[0003] However, the section between the straight connector and the interface is prone to leakage inside the box, which can lead to insulation withstand voltage failure and cause malfunctions, resulting in poor performance, reliability and service life of the battery device. Utility Model Content

[0004] This application provides a battery device that aims to solve the problem that leakage easily occurs in the battery housing between the straight connector and the interface, leading to insulation withstand voltage failure, malfunction, and poor performance, reliability, and service life of the battery device.

[0005] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0006] In a first aspect, a battery device is provided, comprising:

[0007] The enclosure, including the frame;

[0008] A thermal management component includes a main body, a protrusion, and an interface. The main body covers the frame, and the periphery of the main body is sealed to the frame. The main body and the frame together enclose a receiving space for accommodating a battery cell. The protrusion is connected to the periphery of the main body and protrudes beyond the outer periphery of the frame. The interface is located on the protrusion.

[0009] Adapters that correspond one-to-one with the interfaces and are sealed for insertion;

[0010] The enclosure also includes a mounting base, which is located on the outer periphery of the frame and directly opposite the protrusion. The side of the mounting base facing the protrusion is sealed to the protrusion, and the side of the mounting base facing the frame is sealed to the frame.

[0011] The battery device provided in this application embodiment can be sealed by the main body of the thermal management component and the frame cover to jointly enclose and form a housing space for accommodating components such as battery cells. This provides dustproof and waterproof protection for the battery cells and other components, and facilitates contact and heat exchange between the main body and the battery cells and other components, thereby regulating their temperature. Furthermore, the protrusion extending beyond the outer periphery of the frame ensures that the interface located on the protrusion and the adapter that seals with the interface are both located outside the outer periphery of the frame. Based on this, the sealed connection between the adapter and the interface allows for reliable and stable transmission and flow of the heat exchange medium between the adapter and the thermal management component. Even if leakage occurs accidentally between the adapter and the interface, it is ensured that the leakage occurs outside the housing, preventing the leaked heat exchange medium from directly invading the battery device and damaging the internal insulation environment, causing insulation withstand voltage failure. This reduces the risk of performance degradation, malfunctions, and accidents caused by insulation withstand voltage failure. Therefore, the performance, reliability, and service life of the battery device can be effectively maintained and improved. Furthermore, since the interface and adapter are located outside the outer periphery of the frame, during after-sales maintenance, the adapter can be disassembled and replaced directly outside the enclosure without disassembling the enclosure. This simplifies the operation, facilitates after-sales maintenance and repair work, and helps improve after-sales maintenance efficiency.

[0012] If the protrusion is directly sealed to the frame along the edge of the frame, the sealing path will intersect with the heat exchange channel of the protrusion that extends from the main body to the interface, which may damage the structural integrity and heat exchange function of the heat exchange channel and thermal management components, and the sealing reliability will also be relatively poor. Therefore, by adopting the above solution, a mounting base that is separately connected to the frame can be added to seal the protrusion and the frame respectively. This creates a double sealing barrier between the mounting base and the protrusion, and between the mounting base and the frame. Based on this, two possible airtight failure paths can be blocked (along the protrusion and the frame, or between the protrusion and the mounting base; or along the protrusion and the frame, or between the frame and the mounting base). This significantly reduces the risk of communication between the inside of the housing and the external environment, thereby improving the sealing reliability near the protrusion and the overall sealing and operational reliability of the battery device. Furthermore, it avoids the sealing path of "directly sealing the protrusion to the frame along the edge of the frame," and avoids damage to the heat exchange channel due to the interference between the sealing path and the heat exchange channel. This maintains the structural integrity of the heat exchange channel and the thermal management components, as well as the stability of the heat exchange function.

[0013] In some embodiments, the mounting base is brazed to the protrusion on the side facing the protrusion.

[0014] By employing the above-mentioned method, brazing allows the liquid brazing filler metal to fully fill the minute gap between the mounting base and the protrusion, and the solidified brazing filler metal to form a continuous and dense connection interface between the mounting base and the protrusion. This enables a convenient, quick, and reliable sealed connection between the mounting base and the protrusion. Furthermore, compared to other sealing methods, brazing is less prone to seal failure due to aging, loosening, limited temperature resistance, or limited durability, providing a stable and long-lasting seal. It is suitable for battery device scenarios requiring long-term resistance to vibration and temperature changes. Therefore, it maintains and improves the sealing reliability between the mounting base and the protrusion, essentially blocks airtight failure paths between them, reduces unnecessary communication between the internal and external environments of the battery housing, and enhances the overall sealing and operational reliability of the battery device. Furthermore, the protrusion of the thermal management component has a heat exchange channel inside and is relatively thin. During brazing, the base material does not melt, only the brazing filler metal melts. The heat-affected zone of the protrusion (i.e., the area where material properties change or structural deformation occurs due to high temperature) is small. The brazing filler metal only acts on the connection interface and does not penetrate into the interior of the thermal management component (especially the heat exchange channel). Therefore, it can basically avoid the deformation and cracking of the heat exchange channel due to high temperature, basically avoid the distortion of the protrusion as a whole due to thermal stress, and basically avoid damage to the heat exchange channel or blockage of the heat exchange medium flow. Thus, the structural integrity and functional stability of the protrusion, heat exchange channel and thermal management component can be maintained.

[0015] In some embodiments, structural adhesive is used to fill the space between the mounting base and the protrusion.

[0016] By adopting the above solution, the gap between the mounting base and the protrusion can be filled with structural adhesive, promoting the formation of a continuous, dense, and essentially gapless connection interface between the mounting base and the protrusion. This allows for convenient, quick, and reliable sealing between the mounting base and the protrusion, maintaining and improving the sealing reliability between them, and essentially blocking airtight failure paths. This embodiment is particularly suitable for use in conjunction with the previous embodiment. In this combined embodiment, brazing achieves the main seal through a dense weld, while structural adhesive automatically fills any undetectable pores that may form due to the large-area brazing, providing remedial sealing for potential leaks. This creates a "double insurance," thereby combining brazing and structural adhesive to form a comprehensive and reliable sealing barrier between the mounting base and the protrusion, optimizing and improving the sealing reliability between them.

[0017] In some embodiments, the mounting base has a cutout area on the side facing the protrusion; the mounting base has a cavity that connects the cutout area to the outside of the mounting base; structural adhesive is filled between the mounting base and the protrusion through the cutout area.

[0018] By adopting the above solution, structural adhesive can be injected into the hollowed-out area from the cavity during the sealing connection between the mounting base and the protrusion. This allows the structural adhesive to actively penetrate and fill the gap between the mounting base and the protrusion (including hard-to-detect pores formed by brazing), thereby improving the ease of structural adhesive filling. Furthermore, it ensures that the structural adhesive fully fills the gap between the mounting base and the protrusion, reducing sealing blind spots, improving the uniformity and density of the filling, and optimizing the sealing reliability between the mounting base and the protrusion. Moreover, the cavity design allows the mounting base to be a hollow structure, reducing the material usage and weight of the mounting base.

[0019] In some embodiments, the mounting base has a cutout area on the side facing the protrusion; the mounting base has a through hole on the side away from the protrusion, the through hole connecting the cutout area to the outside of the mounting base; structural adhesive is filled between the mounting base and the protrusion through the cutout area.

[0020] By adopting the above solution, structural adhesive can be injected into the perforated area during the sealing connection between the mounting base and the protrusion. This allows the structural adhesive to actively penetrate and fill the gap between the mounting base and the protrusion (including hard-to-detect pores formed by brazing). Based on this, the ease of operation of filling the structural adhesive can be improved. Furthermore, it can ensure that the structural adhesive fully fills the gap between the mounting base and the protrusion, reduce the sealing blind zone of the structural adhesive, improve the filling uniformity and density of the structural adhesive, and optimize and improve the sealing reliability between the mounting base and the protrusion.

[0021] In some embodiments, the edges of the mounting base facing the frame are welded to the frame.

[0022] By adopting the above solution, welding can be used to fuse the edges of the mounting base facing the frame into a single unit, forming a continuous, gapless connection interface. This allows for a convenient, quick, and reliable sealed connection between the mounting base and the frame, effectively eliminating macroscopic and microscopic gaps at the connection point. It also reduces undetectable porosity caused by residual gas from the melting of the filling material and optimizes the airtightness of the edges of the mounting base facing the frame (especially at corners). Therefore, it maintains and improves the sealing reliability between the mounting base and the frame, essentially blocks airtight failure paths between them, reduces unnecessary communication between the internal and external environments of the enclosure, and enhances the overall sealing and operational reliability of the battery device.

[0023] In some embodiments, the protrusion has two first edges extending along a first direction and spaced apart from each other along a second direction. The first edges are welded to the mounting base to form a first solder mark, and the second direction is perpendicular to the first direction.

[0024] By adopting the above solution, two first weld marks formed by welding the two first edges to the mounting base can directly seal any gaps that may appear along the "contact surface between the first edge and the mounting base," reliably blocking the airtight failure path formed from the side where the first weld mark is located (i.e., the opposite sides along the second direction). This is because the first weld mark blocks the short paths of the protrusion along both sides of the second direction. If an airtight failure occurs, the possible airtight failure path can only detour to the side of the protrusion away from the main body. The length of this airtight failure path is significantly increased, and it is necessary to break through the sealing interface between the protrusion and the mounting base (e.g., the sealing interface formed by brazing, the sealing interface formed by structural adhesive, etc.). The actual probability of airtight failure will be lower (the longer the path and the more sealing interfaces that need to be broken through, the lower the actual probability of airtight failure. Even with minor defects, multiple barriers can significantly reduce the possibility of penetration by media such as moisture and dust). This can optimize and improve the sealing reliability between the protrusion and the mounting base, essentially block the airtight failure path between the protrusion and the mounting base, reduce unnecessary communication between the inside of the housing and the external environment, and improve the overall sealing reliability and operational reliability of the battery device.

[0025] In some embodiments, the main body includes a plate portion and an extension portion connected between the plate portion and the protrusion portion. The extension portion has two second edges that extend along a first direction and are spaced apart from each other along a second direction. The second edges are welded to the frame to form a second weld mark. The second weld mark and the first weld mark located on the same side along the second direction are collinear.

[0026] The mounting base has two opposing third edges on the side facing the frame, spaced apart along a second direction. The third edges are welded to the frame to form a third weld mark, which is perpendicular to the first and second weld marks.

[0027] By adopting the above scheme, the third weld mark can be perpendicular to the first and second weld marks that are collinearly arranged on the same side along the second direction, thus forming a "T"-shaped welding trajectory. Based on this, the "T"-shaped welding trajectory can precisely and reliably seal the "triangular area" formed at the intersection of the frame, mounting base, and thermal management components (i.e., extensions and protrusions). This reduces weak points in the seal caused by discontinuity, reduces blind spots in the seal caused by the intersection of multiple components, and optimizes and improves the overall sealing reliability and operational reliability of the battery device.

[0028] In some embodiments, the interface is located on the side of the protrusion facing the mounting base, and the mounting base has a through hole corresponding to the position of the adapter. Part of the adapter passes through the through hole and is sealed and plugged into the interface, while the other part of the adapter protrudes out of the through hole and is connected to the side of the mounting base opposite to the protrusion.

[0029] By adopting the above solution, the interface and adapter portion located on the protruding part facing the mounting base can achieve a sealed insertion fit between the adapter and the interface through the through hole in the mounting base. Based on this, the adapter and interface can be quickly positioned and accurately aligned through the through hole, thereby achieving a convenient, quick, and reliable sealed insertion fit between the adapter and the interface. This improves the ease of operation and efficiency of sealing the adapter and interface. Furthermore, the mounting base can form a physical protective barrier for the mutual insertion fit of the adapter and the interface, reducing the impact of external impacts on the sealing performance between the adapter and the interface.

[0030] By adopting the above solution, the portion of the adapter exposed outside the perforation can be securely connected to the side of the mounting base facing away from the protrusion. The mounting base acts as a structure for receiving and locking the adapter, ensuring the stable and secure position and state of the adapter relative to the interface. This allows the locking and clamping forces generated by the fastening connection to continuously act on the connection points between the adapter and the interface (especially sealing structures such as the first and second sealing rings). This maintains and enhances the sealing reliability between the adapter and the interface, reducing the risk of seal failure due to vibration, displacement, or other factors, and lowering the risk of leakage at the interface. Furthermore, the tight connection of the adapter to the side of the mounting base facing away from the protrusion allows the force on the adapter to be transmitted and distributed through the mounting base, reducing the risk of damage to the connection points due to excessive localized stress. This improves the mechanical strength and stability of the interface, enhancing the operational reliability and usability of the battery device under long-term use and complex operating conditions.

[0031] In some embodiments, the adapter is detachably connected to the side of the mounting base opposite to the protrusion via fasteners.

[0032] By adopting the above solution, the part of the adapter exposed outside the perforation can be detachably connected to the side of the mounting base facing away from the protrusion by fasteners. During after-sales maintenance, the adapter can be easily and quickly disassembled and replaced from outside the housing and from the side of the mounting base facing away from the protrusion. The operation is simple, which facilitates after-sales maintenance and repair work and helps to improve after-sales maintenance efficiency.

[0033] In some embodiments, the adapter includes a first adapter portion and a second adapter portion, the second adapter portion being sealed and plugged into an interface, the first adapter portion being connected to the second adapter portion and bent relative to the second adapter portion in a direction away from the frame.

[0034] By adopting the above solution, since the first adapter bends away from the frame relative to the second adapter, it is easier for the first adapter to connect and cooperate with the external pipeline. This can basically avoid the frame from obstructing the connection between the first adapter and the external pipeline, thereby improving the ease of operation and efficiency when the adapter is connected to the external pipeline.

[0035] In some embodiments, the adapter includes a plug portion that is inserted into the interior of the interface; the outer wall surface of the plug portion is sealed to the inner wall surface of the interface.

[0036] By adopting the above solution, when the adapter is inserted into the interface via the plug part, the sealing connection between the outer wall of the plug part and the inner wall of the interface can be directly utilized to improve the sealing effect, sealing reliability, and sealing stability between the adapter and the interface, reduce the risk of leakage, and enhance the reliability of heat exchange medium transmission.

[0037] In some embodiments, the adapter includes a plug portion that is inserted into the interior of the interface; the adapter also includes a stop portion connected to the plug portion and located outside the interface, the stop portion sealingly abutting against the end face of the interface.

[0038] By adopting the above solution, when the adapter is stopped outside the interface by the stop part, the sealing contact between the end face of the stop part facing the interface and the end face of the interface facing the stop part can be used to improve the sealing effect, sealing reliability, and sealing stability between the adapter and the interface, reduce the risk of leakage, and enhance the reliability of heat exchange medium transmission.

[0039] Secondly, an electrical device is provided, including the battery device provided in the embodiments of this application.

[0040] By adopting the above solution, the electrical device can improve its performance, reliability, service life, after-sales maintenance convenience, and after-sales maintenance efficiency by using the battery device provided in the embodiments of this application. Attached Figure Description

[0041] To clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0043] Figure 2 This is an exploded view of a battery device provided in some embodiments of this application;

[0044] Figure 3 This is a partial exploded view of a battery device provided in some embodiments of this application;

[0045] Figure 4 This is a partial perspective view of a battery device provided in some embodiments of this application;

[0046] Figure 5 Partial cross-sectional views of a battery device provided in some embodiments of this application;

[0047] Figure 6 for Figure 5 Exploded cross-sectional view of the provided battery device.

[0048] The following are the labeling elements in the figure:

[0049] 1-Battery assembly, 2-Controller, 3-Motor; 100-Battery cell assembly; 200-Casing, 201-First part, 202-Second part, 203-Frame, 204-Mounting base, 2041-Clearing area, 2042-Third edge, 2043-Third weld mark, 2044-Perforation, 2045-Cavity, 300-Thermal management component, 301-Main body, 3011-Plate body, 3012-Extension, 30121-Second edge, 30122-Second weld mark, 302-Protrusion, 3021-First edge Along, 3022-first weld mark, 3023-first side, 303-interface, 304-first plate, 305-second plate, 306-heat exchange channel, 400-adapter, 401-first adapter, 402-second adapter, 4021-plug, 40211-annular groove, 4022-stop, 500-structural adhesive, 600-fastener, 700-first sealing ring, 800-second sealing ring, a-first direction, b-second direction, c-extension direction of the first adapter, d-extension direction of the second adapter. Detailed Implementation

[0050] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clear, the application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application. Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions.

[0051] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0054] A battery device is a modular structure comprising at least two battery cells to provide higher voltage and capacity; for example, it may be a battery module, battery pack, or battery assembly. In some cases, the battery device includes a housing, a battery cell assembly, a thermal management component, a connecting hose, and two straight connectors. The battery cell assembly and the thermal management component are housed within the housing. The thermal management component is a plate-like structure laid on the inner wall of the housing to support the battery cell assembly. The thermal management component abuts against the corresponding side of the battery cell assembly to cooperate with the battery cell assembly in heat exchange and regulate the temperature of the battery cell assembly. The thermal management component has two interfaces, and the two straight connectors are installed through the wall of the housing. One straight connector, located at its end inside the housing, is connected to one of the interfaces via a connecting hose for the inflow of heat exchange medium. The other straight connector, located at its end inside the housing, is connected to the other interface via a connecting hose for the outflow of heat exchange medium.

[0055] However, the section between the straight connector and the interface is prone to leakage (i.e., heat exchange medium leakage) inside the casing due to insecure installation. If the battery device is used in mobile applications such as vehicles, this section is also susceptible to leakage under harsh operating conditions (such as bumps and vibrations). In other words, leakage is likely to occur within the casing at this point. Once leakage occurs, the leaked heat exchange medium will damage the internal insulation environment of the battery device, causing insulation withstand voltage failure, leading to a decrease in battery performance, and potentially causing unstable power supply, shortened range, short circuits, fires, explosions, and other malfunctions or accidents, resulting in poor battery performance, reliability, and lifespan. Furthermore, during after-sales maintenance, the casing must be disassembled first, and then the straight connector and connecting hose must be separated before the straight connector can be disassembled or replaced, making the process cumbersome and inconvenient for after-sales maintenance and repair.

[0056] Therefore, some embodiments of this application provide a battery device in which the main body of the thermal management component is fitted and sealed to the frame to form a housing space for accommodating components such as battery cells and modules. This provides dust and water protection for the battery cells and modules, and facilitates contact and heat exchange between the main body and the components, thereby regulating their temperature. Furthermore, a protrusion extending beyond the outer periphery of the frame ensures that the interface and the adapter sealingly connected to the interface are located outside the frame's outer periphery. Based on this, the sealed connection between the adapter and the interface allows for reliable and stable transmission and flow of the heat exchange medium between the adapter and the thermal management component. Even if leakage occurs between the adapter and the interface, it is ensured that the leakage occurs outside the housing, preventing the leaked heat exchange medium from directly invading the battery device and damaging the internal insulation environment, thus reducing the risk of performance degradation, malfunctions, and accidents caused by insulation withstand voltage failure. Therefore, the performance, reliability, and service life of the battery device can be effectively maintained and improved. Furthermore, since the interface and adapter are located outside the outer periphery of the frame, during after-sales maintenance, the adapter can be disassembled and replaced directly outside the enclosure without disassembling the enclosure. This simplifies the operation, facilitates after-sales maintenance and repair work, and helps improve after-sales maintenance efficiency.

[0057] The battery devices disclosed in this application can be used in electrical devices that use the battery device as a power source, or in various energy storage systems that use the battery device as an energy storage element. Electrical devices can be, but are not limited to, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0058] To illustrate the technical solution provided in this application, the following detailed description is provided in conjunction with specific drawings and embodiments, taking "an electrical device as a vehicle" as an example.

[0059] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 1 is installed inside the vehicle, and the battery device 1 can be located at the bottom, front, or rear of the vehicle. The battery device 1 is used to supply power to the vehicle; for example, the battery device 1 can serve as the vehicle's operating power source. The vehicle may also include a controller 2 and a motor 3. The controller 2 is used to control the battery device 1 to supply power to the motor 3, for example, to meet the power needs of the vehicle during starting, navigation, and driving.

[0060] In some embodiments of this application, the battery device 1 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.

[0061] Please see Figure 2 , Figure 2 This is an exploded view of a battery device 1 provided in some embodiments of this application. The battery device 1 includes a battery cell assembly 100 and a housing 200, wherein the battery cell assembly 100 is housed within the housing 200.

[0062] The housing 200 is used to provide a space for the battery cell assembly 100 and other components. The housing 200 can protect the battery cell assembly 100 and other components inside from dust and water, reduce the impact of external liquids or other foreign objects on the effectiveness and performance of the battery cell assembly 100 and other components, and effectively extend the service life of the battery device 1.

[0063] The housing 200 can adopt various structures. In some embodiments, the housing 200 may include a first portion 201 and a second portion 202, which overlap each other, and together define a receiving space for accommodating the battery cell assembly 100. The second portion 202 may be a hollow structure with one end open, and the first portion 201 may be a plate-like structure, with the first portion 201 covering the open side of the second portion 202 so that the first portion 201 and the second portion 202 together define the receiving space; the first portion 201 and the second portion 202 may also be hollow structures with one side open, with the open side of the first portion 201 covering the open side of the second portion 202.

[0064] The box 200 can be of various shapes, such as a cylinder or a cuboid.

[0065] The enclosure 200 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0066] In the battery device 1, there may be one battery cell assembly 100 or at least two battery cell assemblies 100. When there are at least two battery cell assemblies 100, the at least two battery cell assemblies 100 may be connected in series, in parallel, or in a mixed manner. A mixed manner means that at least two battery cell assemblies 100 are connected in both series and parallel.

[0067] The battery cell assembly 100 may include at least two battery cells. These at least two battery cells may be directly connected in series, parallel, or a combination thereof, and then the assembly consisting of the at least two battery cells is housed within a casing 200. The battery cells may be lithium-ion rechargeable battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc. The battery cells may be cylindrical, flat, cuboid, or other shapes, etc. The battery cells may employ different packaging methods to form cylindrical battery cells, square battery cells, or pouch battery cells, etc.

[0068] Please see Figure 3 , Figure 4 , Figure 5 , Figure 6Some embodiments of this application provide a battery device 1, including a housing 200, a thermal management component 300, and an adapter 400. The housing 200 includes a frame 203. The thermal management component 300 includes a main body 301, a protrusion 302, and an interface 303. The main body 301 covers the frame 203, and the periphery of the main body 301 is sealed to the frame 203. The main body 301 and the frame 203 together form a receiving space for accommodating a single battery cell. The protrusion 302 is connected to the periphery of the main body 301 and protrudes beyond the outer peripheral surface of the frame 203. The interface 303 is located on the protrusion 302. The adapter 400 corresponds one-to-one with the interface 303 and is sealed and plugged in.

[0069] It should be noted that the housing 200 is the basic load-bearing structure of the battery device 1. The frame 203 of the housing 200 defines a cavity for accommodating individual battery cells, which has two openings arranged opposite each other. The specific shape of the frame 203 can be designed according to the actual application scenario; for example, it can be a regular or irregular three-dimensional frame structure such as a rectangle or polygon. The specific material of the frame 203 can be set as needed; for example, materials with certain strength and corrosion resistance (such as metal alloys) can be selected to maintain the overall structural stability of the housing 200.

[0070] The thermal management component 300 is a key component for achieving thermal regulation of the battery device 1. The thermal management component 300 includes a main body 301, a protrusion 302, and an interface 303. The main body 301 is the part corresponding to the frame 203. The main body 301 covers an opening in the frame 203. The main body 301 and the frame 203 can form a receiving space for accommodating components such as battery cells. The main body 301 can also contact and exchange heat with the battery cells and other components to regulate their temperature. The shape of the main body 301 is basically matched with the shape of the opening in the frame 203 so that the main body 301 can fit and cover the opening in the frame 203. The periphery of the main body 301 is sealed to the frame 203. "Sealed connection" means that a gapless connection structure is formed between the main body 301 and the frame 203 through a specific sealing method (such as welding, gluing, setting a sealing ring, etc.). This prevents the material inside the battery device 1 from leaking outward along the gap between the main body 301 and the frame 203, and also prevents external dust, moisture, etc. from entering the battery device 1 through the gap between the main body 301 and the frame 203, thereby maintaining and improving the sealing reliability between the main body 301 and the frame 203.

[0071] The protrusion 302 is connected to the periphery of the main body 301 and protrudes beyond the outer peripheral surface of the frame 203. In other words, the protrusion 302 is a portion located outside the outer peripheral surface of the frame 203, meaning it protrudes relative to the outer peripheral surface of the frame 203. The protrusion 302 and the main body 301 are integrally formed plate-like structures, such as... Figure 5 , Figure 6 As shown, in some embodiments, the plate-like structure includes a first plate 304 and a second plate 305 that overlap each other. A heat exchange channel 306 is provided between the first plate 304 and the second plate 305 for the flow of a heat exchange medium. The heat exchange medium can be used to regulate the temperature of components such as battery cells. The heat exchange medium can be a liquid or a gas, such as water, a mixture of water and ethylene glycol, air, etc.

[0072] Interface 303 is located on the protrusion 302, and therefore, interface 303 is also located outside the outer peripheral surface of frame 203. Interface 303 is connected and communicates with the heat exchange channel 306 inside the thermal management component 300. Interface 303 is a transmission port for the inflow or outflow of heat exchange medium. The structural form of interface 303 can be designed according to actual needs, such as a tubular interface, quick-connect interface, etc.

[0073] Adapter 400 is used to connect the heat management component 300 to external piping. Adapter 400 and interface 303 are provided in a one-to-one correspondence, and the corresponding adapter 400 and interface 303 are sealed together. "Sealed connection" means that the adapter 400 and interface 303 are connected by a plug-in method, and a sealing structure (such as a sealing ring, sealing gasket, sealant, etc.) is provided at the connection point to prevent leakage of the heat exchange medium during transmission. The size and specifications of the adapter 400 are compatible with the size and specifications of the interface 303 to maintain the tightness and reliability of the connection.

[0074] The device includes at least one protrusion 302 and at least two adapters 400 and interfaces 303. For example, in some embodiments, the pluggable adapters 400 and interfaces 303 are grouped together, with two groups of adapters 400 and interfaces 303. One group of adapters 400 and interfaces 303 is used for the inflow of heat exchange medium, and the other group is used for the outflow of heat exchange medium. The two groups of adapters 400 and interfaces 303 can be located on the same protrusion 302 or on two separate protrusions 302. Of course, in other embodiments, at least three groups of adapters 400 and interfaces 303 may be provided. Some adapters 400 and interfaces 303 are used for the inflow of heat exchange medium, and others are used for the outflow of heat exchange medium. All adapters 400 and interfaces 303 can be located on the same protrusion 302 or, as needed, on different protrusions 302.

[0075] In summary, the battery device 1 provided in this application embodiment can be sealed and connected by the main body 301 of the thermal management component 300 and the frame 203 to jointly enclose and form a receiving space for accommodating components such as battery cells, thereby jointly protecting the battery cells and other components from dust and water, and facilitating the contact and heat exchange between the main body 301 and the battery cells and other components to regulate the temperature of the battery cells and other components. Furthermore, the protrusion 302 extending beyond the outer periphery of the frame 203 ensures that both the interface 303 located on the protrusion 302 and the adapter 400 that seals and plugs into the interface 303 are located outside the outer periphery of the frame 203. Based on this, the sealed connection between the adapter 400 and the interface 303 ensures reliable and stable transmission and flow of the heat exchange medium between the adapter 400 and the thermal management component 300. Even if leakage occurs accidentally between the adapter 400 and the interface 303, the leakage will occur outside the housing 200, preventing the leaked heat exchange medium from directly invading the battery device 1 and damaging the internal insulation environment, thus reducing the risk of performance degradation, malfunctions, and accidents caused by insulation withstand voltage failure. Therefore, the performance, reliability, and service life of the battery device 1 can be effectively maintained and improved. Furthermore, since the interface 303 and the adapter 400 are located outside the outer periphery of the frame 203, during after-sales maintenance, the adapter 400 can be disassembled and replaced directly outside the housing 200 without disassembling the housing 200. This simplifies the operation, facilitates after-sales maintenance and repair work, and helps improve after-sales maintenance efficiency.

[0076] Furthermore, since the thermal management component 300 and the adapter 400 do not occupy the internal space of the housing 200, the number of assembled parts inside the housing 200 can be reduced, which is beneficial to accommodating more battery cells in the limited space of the housing 200, thus improving the energy density of the battery device 1; and it can also reduce costs to a certain extent.

[0077] In addition, in some embodiments, the battery device 1 may include a bottom protective plate, which may be disposed on the side of the main body 301 facing away from the frame 203 and connected and fixed to the frame 203. The bottom protective plate may provide structural reinforcement and protection for the main body 301.

[0078] Please see Figure 3 , Figure 4 , Figure 5 In some embodiments of this application, the housing 200 includes a mounting base 204, which is disposed on the outer peripheral surface of the frame 203 and is directly opposite to the protrusion 302. The side of the mounting base 204 facing the protrusion 302 is sealed to the protrusion 302, and the side of the mounting base 204 facing the frame 203 is sealed to the frame 203.

[0079] It should be noted that the mounting base 204 is a beam structure located on the periphery of the frame 203. The mounting base 204 is correspondingly and directly opposite the protrusion 302. The mounting base 204 can serve as an intermediate connecting member between the frame 203 and the protrusion 302. The mounting base 204 can be a hollow structure or a solid structure.

[0080] The side of the mounting base 204 facing the protrusion 302 is sealed to the side of the protrusion 302 facing the mounting base 204, and the side of the mounting base 204 facing the frame 203 is sealed to the frame 203. Sealing methods include welding, gluing, and adding a gasket. Based on this, a double-sealed connection can reliably seal the gaps between the mounting base 204 and the protrusion 302, and between the mounting base 204 and the frame 203. In assembly, the sealing connection between the mounting base 204 and the protrusion 302 can be performed first, followed by the sealing connection between the mounting base 204 and the frame 203, offering better operational convenience. Alternatively, depending on process requirements, the sealing connection between the mounting base 204 and the frame 203 can be performed first, followed by the sealing connection between the mounting base 204 and the protrusion 302. The interface 303 and the adapter 400 that are sealed and plugged into the interface 303 can be located on the side of the protrusion 302 facing the mounting base 204, or on the side of the protrusion 302 away from the mounting base 204, or on the side of the protrusion 302 away from the main body 301.

[0081] If the protrusion 302 is directly sealed to the frame 203 along the edge of the frame 203, the sealing path will intersect with the heat exchange channel 306 of the protrusion 302, which extends from the main body 301 to the interface 303. This could damage the structural integrity and heat exchange function of the heat exchange channel 306 and the thermal management component 300, and the sealing reliability would be relatively poor. Therefore, by adopting the above solution, a mounting base 204, which is separately connected to the frame 203, can be added. The mounting base 204 can be sealed to both the protrusion 302 and the frame 203, forming a double sealing barrier between the mounting base 204 and the protrusion 302, and between the mounting base 204 and the frame 203. Based on this, two possible airtightness failure paths can be blocked (between the protrusion 302 and the frame 203, and between the protrusion 302 and the mounting base 204; or between the protrusion 302 and the frame 203, and between the frame 203 and the mounting base 203). The mounting position (between mounting base 204) can significantly reduce the risk of communication between the interior of the housing 200 and the external environment, thereby improving the sealing reliability near the protrusion 302 and the overall sealing and operational reliability of the battery device 1. Furthermore, it can avoid the sealing path of "directly sealing the protrusion 302 with the frame 203 along the edge of the frame 203", thus avoiding damage to the heat exchange channel 306 due to the interference between the sealing path and the heat exchange channel 306, and maintaining the structural integrity and heat exchange function stability of the heat exchange channel 306 and the thermal management component 300.

[0082] Furthermore, the mounting base 204, as a connecting component between the frame 203 and the protrusion 302, can also enhance the overall structural strength of the housing 200 and the thermal management component 300, thereby strengthening structural stability and reducing the risk of deformation or breakage of the protrusion 302 due to external forces (such as collisions or vibrations). In addition, the mounting base 204 can distribute the stress at the connection between the protrusion 302 and the frame 203, mitigating localized fatigue damage caused by vibration, thermal expansion and contraction during long-term use, and extending the service life of the battery device 1.

[0083] Please see Figure 3 , Figure 4 , Figure 5 In some embodiments of this application, the mounting base 204 is brazed to the protrusion 302 on the side facing the protrusion 302.

[0084] It should be noted that brazing is a welding process that uses a filler metal with a lower melting point than the base material. This filler metal melts at high temperatures and fills the joint interface, firmly bonding two components together. Throughout the brazing process, the base material itself does not melt; the bond is achieved solely through the melting and solidification of the filler metal. In this embodiment, the mounting base 204 and the protrusion 302 are the "base material" in the brazing process.

[0085] By adopting the above-described solution, brazing allows the liquid brazing filler metal to fully fill the minute gap between the mounting base 204 and the protrusion 302, and the solidified brazing filler metal to form a continuous and dense connection interface between the mounting base 204 and the protrusion 302. This enables a convenient, quick, and reliable sealed connection between the mounting base 204 and the protrusion 302. Furthermore, compared to other sealing methods, brazing is less prone to seal failure due to aging, loosening, limited temperature resistance, or limited durability, providing a stable and long-lasting seal. This makes it suitable for battery devices 1 that require long-term resistance to vibration and temperature changes. Therefore, the sealing reliability between the mounting base 204 and the protrusion 302 can be maintained and improved, the airtightness failure path between the mounting base 204 and the protrusion 302 can be essentially blocked, unnecessary communication between the interior of the housing 200 and the external environment can be reduced, and the overall sealing and operational reliability of the battery device 1 can be improved.

[0086] Furthermore, the protrusion 302 of the thermal management component 300 has a thin heat exchange channel 306 inside. During brazing, the base material does not melt, only the brazing filler metal melts. The heat-affected zone of the protrusion 302 (i.e., the area where material properties change or structural deformation occurs due to high temperature) is small. The brazing filler metal only acts on the connection interface and does not penetrate into the interior of the thermal management component 300 (especially the heat exchange channel 306). Therefore, it can basically avoid the deformation and cracking of the heat exchange channel 306 due to high temperature, basically avoid the distortion of the protrusion 302 as a whole due to thermal stress, and basically avoid damage to the heat exchange channel 306 or blockage of the heat exchange medium flow. Thus, the structural integrity and functional stability of the protrusion 302, the heat exchange channel 306, and the thermal management component 300 can be maintained.

[0087] Please see Figure 3 , Figure 5 , Figure 6 In some embodiments of this application, structural adhesive 500 is filled between the mounting base 204 and the protrusion 302.

[0088] It should be noted that structural adhesive 500 is an adhesive with high bonding strength and the ability to adapt to certain deformations. Structural adhesive 500 can fill the gap between the mounting base 204 and the protrusion 302.

[0089] By adopting the above solution, the gap between the mounting base 204 and the protrusion 302 can be filled by the structural adhesive 500, promoting the formation of a continuous, dense, and essentially gapless connection interface between the mounting base 204 and the protrusion 302. This allows for convenient, quick, and reliable sealing between the mounting base 204 and the protrusion 302, maintaining and improving the sealing reliability between them, and essentially blocking the airtight failure path between them. This embodiment is particularly suitable for use in conjunction with the previous embodiment. In this combined embodiment, brazing achieves the main seal through a dense weld, while the structural adhesive 500 automatically fills any undetectable pores that may form due to the large-area brazing, providing remedial sealing for potential leaks and forming a "double insurance." This allows for the comprehensive and reliable sealing barrier formed between the mounting base 204 and the protrusion 302 by combining brazing and structural adhesive 500, thereby optimizing and improving the sealing reliability between them. Of course, this embodiment is also suitable for alternative configuration to the previous embodiment.

[0090] Please see Figure 3 , Figure 5 , Figure 6In some embodiments of this application, the mounting base 204 has a cutout area 2041 on the side facing the protrusion 302. The mounting base 204 has a cavity 2045, which connects the cutout area 2041 to the outside of the mounting base 204. Structural adhesive 500 is filled between the mounting base 204 and the protrusion 302 via the cutout area 2041.

[0091] It should be noted that the mounting base 204 has a cavity 2045, that is, the mounting base 204 is a hollow structure. In some embodiments, the cavity 2045 may be disposed through the mounting base 204 along the second direction b.

[0092] The mounting base 204 has a hollow area 2041 on the side facing the protrusion 302. The hollow area 2041 can be a hole structure or a groove structure, and the shape of the hollow area 2041 can be rectangular, circular, etc. The hollow area 2041 is connected to the cavity 2045, and the hollow area 2041 is connected to the outer peripheral surface of the mounting base 2044 through the cavity 2045.

[0093] By adopting the above solution, during the sealing connection between the mounting base 204 and the protrusion 302, structural adhesive 500 can be injected into the hollow area 2041 from the cavity 2045. This allows the structural adhesive 500 to actively penetrate and fill the gap between the mounting base 204 and the protrusion 302 (including hard-to-detect pores formed by brazing), thereby improving the ease of filling the structural adhesive 500. Furthermore, it ensures that the structural adhesive 500 fully fills the gap between the mounting base 204 and the protrusion 302, reducing sealing blind spots and improving the uniformity and density of filling, thus optimizing the sealing reliability between the mounting base 204 and the protrusion 302. Moreover, the design of the cavity 2045 allows the mounting base 204 to be a hollow structure, reducing the material usage and weight of the mounting base 204.

[0094] Please see Figure 3 , Figure 5 , Figure 6 In some embodiments of this application, the mounting base 204 has a hollow area 2041 on the side facing the protrusion 302. The mounting base 204 has a through hole 2044 on the side facing away from the protrusion 302, which connects the hollow area 2041 to the outside of the mounting base 204. Structural adhesive 500 is filled between the mounting base 204 and the protrusion 302 via the hollow area 2041.

[0095] It should be noted that the mounting base 204 has a through hole 2044 on the side opposite to the protrusion 302. The through hole 2044 can be a circular hole, a rectangular hole, etc. In some embodiments, the through hole 2044 can be used to allow the adapter 400 to pass through it.

[0096] The mounting base 204 has a hollow area 2041 on the side facing the protrusion 302. The hollow area 2041 can be a hole structure or a groove structure, and its shape can be rectangular, circular, etc. The hollow area 2041 is connected to the through hole 2044, and the hollow area 2041 is connected to the side of the mounting base 204 facing away from the protrusion 302 through the through hole 2044.

[0097] By adopting the above solution, during the sealing connection between the mounting base 204 and the protrusion 302, structural adhesive 500 can be injected into the hollow area 2041 through the perforation 2044. This allows the structural adhesive 500 to actively penetrate and fill the gap between the mounting base 204 and the protrusion 302 (including hard-to-detect pores formed by brazing). Based on this, the ease of operation of filling the structural adhesive 500 can be improved. Furthermore, it can ensure that the structural adhesive 500 fully fills the gap between the mounting base 204 and the protrusion 302, reduce the sealing blind area of ​​the structural adhesive 500, improve the filling uniformity and density of the structural adhesive 500, and optimize and improve the sealing reliability between the mounting base 204 and the protrusion 302.

[0098] The hollowed-out area 2041 can be connected to the outside of the mounting base 204 via either the cavity 2045 or the perforation 2044, or it can be connected to the outside of the mounting base 204 via both the cavity 2045 and the perforation 2044. That is, this embodiment and the previous embodiment can be configured in one or both ways.

[0099] Of course, in other embodiments, the hollow area 2041 of the mounting base 204 may be omitted, and the structural adhesive 500 may be directly filled in the gap between the mounting base 204 and the protrusion 302. In other embodiments, the mounting base 204 may be a solid structure.

[0100] Please see Figure 3 , Figure 4 , Figure 5 In some embodiments of this application, the edges of the mounting base 204 facing the frame 203 are welded to the frame 203.

[0101] It should be noted that the edges of the mounting base 204 facing the frame 203 are welded to the frame 203 and respectively form weld marks. In some embodiments, the edges of the mounting base 204 facing the frame 203 can be fusion welded to the frame 203, that is, the edges of the mounting base 204 facing the frame 203 and the material of the frame 203 are melted and fused by a high-temperature heat source to form a molecular-level connection; fusion welding is a welding method with "melting" as its core. The main principle is: the base material is locally melted by a high-temperature heat source to form a molten pool. After the molten pool cools and solidifies, a strong joint can be formed to achieve material connection; fusion welding can be carried out using, but is not limited to, electric arc welding, gas welding, laser welding, electroslag welding, etc. For example, in some embodiments, electric arc welding can be used to seal the edges of the mounting base 204 facing the frame 203 to the frame 203.

[0102] By adopting the above solution, the edges of the mounting base 204 facing the frame 203 can be fused together with the frame 203 through welding, forming a continuous and gapless connection interface. This allows for a convenient, quick, and reliable sealed connection between the mounting base 204 and the frame 203, effectively eliminating macroscopic and microscopic gaps at the connection point. It also reduces undetectable pores caused by residual gas during the melting of the filling material and optimizes the airtightness of the edges of the mounting base 204 facing the frame 203 (especially at corners). Therefore, the sealing reliability between the mounting base 204 and the frame 203 can be maintained and improved, the airtightness failure path between the mounting base 204 and the frame 203 can be largely blocked, unnecessary communication between the interior of the housing 200 and the external environment can be reduced, and the overall sealing and operational reliability of the battery device 1 can be improved.

[0103] Please see Figure 3 , Figure 4 In some embodiments of this application, the protrusion 302 has two first edges 3021 extending along a first direction a and spaced apart from each other along a second direction b. The first edges 3021 are welded to the mounting base 204 to form a first solder mark 3022. The second direction b is perpendicular to the first direction a.

[0104] It should be noted that the protrusion 302 has two first edges 3021, both of which extend along a first direction a, and the two first edges 3021 are spaced apart from each other along a second direction b. Here, the first direction a basically corresponds to the "direction away from the main body 301", and the second direction b is a direction perpendicular to the first direction a.

[0105] The two first edges 3021 are respectively welded to the mounting base 204 (e.g., fusion welding) to form the first weld mark 3022. The two first weld marks 3022 can be equivalent to two parallel reinforcing welding rods set in the second direction b between the protrusion 302 and the mounting base 204.

[0106] By adopting the above solution, two first weld marks 3022 formed by welding the two first edges 3021 to the mounting base 204 can directly seal the gap that may appear along the "contact surface between the first edge 3021 and the mounting base 204", reliably blocking the airtight failure path formed from the side where the first weld mark 3022 is located (i.e., the opposite sides along the second direction b) (e.g., the path of external moisture and dust entering the interior of the housing 200 along the gap between the first edge 3021 and the mounting base 204). Based on this, since the first weld mark 3022 blocks the short paths on both sides of the protrusion 302 along the second direction b, if an airtight failure occurs, the possible airtight failure path can only detour to the side of the protrusion 302 away from the main body 301. The length of this airtight failure path is significantly increased, and it is necessary to break through the sealing interface between the protrusion 302 and the mounting base 204 (such as the sealing interface formed by brazing, the sealing interface formed by structural adhesive 500, etc.). The actual probability of airtight failure will be lower (the longer the path and the more sealing interfaces that need to be broken through, the lower the actual probability of airtight failure. Even if there are minor defects, multiple obstacles can greatly reduce the possibility of water vapor, dust and other media penetrating). Therefore, the sealing reliability between the protrusion 302 and the mounting base 204 can be optimized and improved, the airtight failure path between the protrusion 302 and the mounting base 204 can be basically blocked, unnecessary communication between the inside of the housing 200 and the external environment can be reduced, and the overall sealing reliability and operational reliability of the battery device 1 can be improved.

[0107] Please see Figure 3 , Figure 4 In some embodiments of this application, the main body 301 includes a plate portion 3011 and an extension portion 3012 connected between the plate portion 3011 and the protrusion 302. The extension portion 3012 has two second edges 30121 extending along a first direction a and spaced apart from each other along a second direction b. The second edges 30121 are welded to the frame 203 to form second weld marks 30122. The second weld marks 30122 and the first weld marks 3022 located on the same side along the second direction b are collinear. The mounting base 204 has two third edges 2042 spaced apart from each other along the second direction b on the side facing the frame 203. The third edges 2042 are welded to the frame 203 to form third weld marks 2043. The third weld marks 2043 are perpendicular to the first weld marks 3022 and the second weld marks 30122.

[0108] It should be noted that the main body 301 includes a plate portion 3011 and an extension portion 3012. The extension portion 3012 extends from the plate portion 3011 toward the protrusion 302 but does not protrude beyond the outer peripheral surface of the frame 203. The extension portion 3012 connects the plate portion 3011 and the protrusion 302. The extension portion 3012 has two second edges 30121, both of which extend along a first direction a and are spaced apart from each other along a second direction b.

[0109] Two second edges 30121 are respectively welded to the frame 203 to form second weld marks 30122, that is, there are two second weld marks 30122. For example, in some embodiments, the two second edges 30121 can be pressure welded to the frame 203 to form second weld marks 30122; pressure welding is a welding method with "pressure" as its core. The main principle is: by applying pressure to the unmelted (or partially melted) base material, the contact surface undergoes plastic deformation, destroying the surface oxide film and achieving interatomic bonding, forming a joint and achieving connection; pressure welding can be performed using, but is not limited to, resistance welding, friction welding, ultrasonic welding, etc.

[0110] The second weld mark 30122 and the first weld mark 3022, which are located on the same side along the second direction b, are arranged collinearly, that is, the second weld mark 30122 and the first weld mark 3022, which are located on the same side along the second direction b, together form a "I"-shaped welding trajectory.

[0111] It should also be noted that the mounting base 204 has two third edges 2042 on the side facing the frame 203. The two third edges 2042 are spaced apart and opposite each other along the second direction b. The extension direction of the third edges 2042 is perpendicular to both the second direction b and the first direction a. The two third edges 2042 are welded to the frame 203 respectively (e.g., by fusion welding) to form a third weld mark 2043, that is, there are two third weld marks 2043.

[0112] On the same side along the second direction b, the third weld mark 2043 is perpendicular to the first weld mark 3022 and the second weld mark 30122 that are collinearly arranged, and together they form a “T” shaped welding trajectory.

[0113] By adopting the above scheme, on the same side along the second direction b, the third weld mark 2043 can be perpendicular to the first weld mark 3022 and the second weld mark 30122 that are collinearly arranged, thus forming a "T"-shaped welding trajectory. Based on this, the "T"-shaped welding trajectory can be used to precisely seal and reliably seal the "triangular area" formed at the intersection of the frame 203, the mounting base 204, and the thermal management component 300 (i.e., the extension 3012 and the protrusion 302), thereby reducing weak points in the seal caused by discontinuity in the seal, reducing blind spots in the seal caused by the intersection of multiple components, and optimizing and improving the overall sealing reliability and operational reliability of the battery device 1.

[0114] Please see Figure 3 , Figure 4 , Figure 5 In some embodiments of this application, the interface 303 is located on the side of the protrusion 302 facing the mounting base 204. The mounting base 204 has a through hole 2044 corresponding to the position of the adapter 400. A portion of the adapter 400 passes through the through hole 2044 and is sealed and plugged into the interface 303. The other portion of the adapter 400 is exposed outside the through hole 2044 and connected to the side of the mounting base 204 facing away from the protrusion 302.

[0115] It should be noted that the interface 303 is located on the side of the protrusion 302 facing the mounting base 204. The mounting base 204 has a through hole 2044 corresponding to the position of the adapter 400 (i.e., the position corresponding to the interface 303). The through hole 2044 can be circular, rectangular, etc. A portion of the adapter 400 passes through the through hole 2044, and the interface 303 also passes through the through hole 2044. Within the through hole 2044, the adapter 400 and the interface 303 are sealed and plugged into each other. Figure 5 , Figure 6 As shown, in some embodiments, the mounting base 204 has a hollow area 2041 on the side facing the protrusion 302, and the through hole 2044 is connected to the hollow area 2041. The interface 303 can be inserted into the through hole 2044 by passing through the area where the hollow area 2041 is aligned with the through hole 2044.

[0116] A portion of the adapter 400 protrudes from the through hole 2044 to facilitate connection with external piping. The portion of the adapter 400 protruding from the through hole 2044 is securely connected to the side of the mounting base 204 facing away from the protrusion 302. This allows the mounting base 204 to serve as a structure for receiving and securing the adapter 400, ensuring a stable and fixed position and state of the adapter 400 relative to the mounting base 204 and the interface 303. A certain locking and clamping force can exist between the adapter 400 and the interface 303. The portion of the adapter 400 protruding from the through hole 2044 and the side of the mounting base 204 facing away from the protrusion 302 can be either fixedly connected or detachably connected to achieve a secure connection.

[0117] By adopting the above solution, the portion of the interface 303 and the adapter 400 located on the side of the protrusion 302 facing the mounting base 204 can achieve a sealed insertion and engagement between the adapter 400 and the interface 303 through the through hole 2044 in the mounting base 2044. Based on this, the adapter 400 and the interface 303 can be quickly positioned and accurately aligned through the through hole 2044, thereby achieving a convenient, quick, and reliable sealed insertion and engagement between the adapter 400 and the interface 303. This improves the ease of operation and efficiency of sealing the adapter 400 and the interface 303. Furthermore, the mounting base 204 can form a physical protective barrier for the mutual insertion and engagement of the adapter 400 and the interface 303, reducing the impact of external impacts on the sealing performance between the adapter 400 and the interface 303.

[0118] By adopting the above solution, the portion of the adapter 400 exposed outside the perforation 2044 can be securely connected to the side of the mounting base 204 facing away from the protrusion 302. The mounting base 204 serves as a structure for receiving and locking the adapter 400, ensuring that the position and state of the adapter 400 relative to the interface 303 remain stable and secure. This ensures that the locking and clamping forces generated by the fastening connection can continuously act on the connection between the adapter 400 and the interface 303 (especially sealing structures such as the first sealing ring 700 and the second sealing ring 800). This maintains and enhances the sealing reliability between the adapter 400 and the interface 303, reduces the risk of seal failure due to factors such as vibration and displacement, and reduces the risk of leakage from the portion of the adapter 400 to the interface 303. Furthermore, the adapter 400 is securely connected to the side of the mounting base 204 facing away from the protrusion 302, which allows the force on the adapter 400 to be transmitted and distributed through the mounting base 204. This reduces the risk of damage to the connection between the adapter 400 and the interface 303 due to excessive local stress, improves the mechanical strength and stability of the part from the adapter 400 to the interface 303, and enhances the operational reliability and usability of the battery device 1 under long-term use and complex operating conditions.

[0119] Of course, in other embodiments, the interface 303 and the adapter 400 that is sealed and plugged into the interface 303 may be provided on the side of the protrusion 302 facing away from the mounting base 204, or on the side of the protrusion 302 facing away from the main body 301. In this case, the mounting base 204 may omit the through hole 2044.

[0120] Please see Figure 3 In some embodiments of this application, the adapter 400 is detachably connected to the side of the mounting base 204 opposite to the protrusion 302 by fasteners 600.

[0121] It should be noted that the portion of the adapter 400 exposed outside the through hole 2044 and the side of the mounting base 204 facing away from the protrusion 302 are detachably connected via one or more fasteners 600. For example... Figure 3 As shown, in some embodiments, the fastener 600 is a bolt. Of course, in other embodiments, the fastener 600 may be a pin, a clip, etc.

[0122] By adopting the above solution, the portion of the adapter 400 exposed outside the through hole 2044 is detachably connected to the side of the mounting base 204 facing away from the protrusion 302 via the fastener 600. This allows for convenient and quick disassembly and replacement of the adapter 400 from outside the housing 200 and from the side of the mounting base 204 facing away from the protrusion 302 during after-sales maintenance. The operation is simple, which facilitates after-sales maintenance and repair work and helps improve after-sales maintenance efficiency.

[0123] Please see Figure 3 , Figure 4 In some embodiments of this application, the periphery of the main body 301 is welded to the frame 203.

[0124] It should be noted that the main body 301 covers an opening in the frame 203, and the periphery of the main body 301 and the frame 203 are sealed together by welding. In some embodiments, the periphery of the main body 301 is pressure welded to the frame 203. Pressure welding is a welding method with "pressure" as its core. The main principle is: by applying pressure to the unmelted (or partially melted) base material, plastic deformation occurs at the contact surface, destroying the surface oxide film and achieving interatomic bonding, forming a joint and achieving connection. Pressure welding can be performed using, but is not limited to, resistance welding, friction welding, ultrasonic welding, etc.

[0125] By adopting the above solution, the contact surfaces of the main body 301 and the frame 203 can be connected and joined by welding to form a continuous, gapless connection boundary. This allows for a convenient, quick, and reliable sealed connection between the main body 301 and the frame 203, effectively eliminating macroscopic and microscopic gaps at the connection boundary. It also reduces undetectable pores caused by residual gas during the melting of the filling material, minimizing potential leakage points and resulting in higher sealing strength and longer-lasting sealing between the main body 301 and the frame 203. Therefore, it maintains and improves the sealing strength, reliability, and durability between the main body 301 and the frame 203, essentially blocking airtight failure paths between them, reducing unnecessary communication between the interior of the housing 200 and the external environment, and improving the overall sealing and operational reliability of the battery device 1.

[0126] Please see Figure 3 , Figure 5 , Figure 6In some embodiments of this application, the adapter 400 includes a first adapter portion 401 and a second adapter portion 402. The second adapter portion 402 is sealed and plugged into the interface 303. The first adapter portion 401 is connected to the second adapter portion 402 and is bent relative to the second adapter portion 402 in a direction away from the frame 203.

[0127] It should be noted that the adapter 400 includes a first adapter portion 401 and a second adapter portion 402 connected in sequence. The first adapter portion 401 is used to connect to an external pipeline, and the second adapter portion 402 is used for a sealed insertion with the interface 303. The first adapter portion 401 is bent relative to the second adapter portion 402 in a direction away from the frame 203. The included angle between the first adapter portion 401 and the second adapter portion 402 can be set as needed.

[0128] By adopting the above solution, since the first adapter 401 is bent away from the frame 203 relative to the second adapter 402, it is convenient for the first adapter 401 to connect and cooperate with the external pipeline. This can basically avoid the frame 203 from blocking the connection between the first adapter 401 and the external pipeline, thereby improving the ease of operation and efficiency of connecting the adapter 400 to the external pipeline.

[0129] Of course, in other embodiments, the adapter 400 may adopt other structural designs, such as the adapter 400 may be arranged in a straight line, or the adapter 400 may be arranged with at least three bends.

[0130] Please see Figure 3 , Figure 5 , Figure 6 In some embodiments of this application, the extension direction c of the first adapter is parallel to the first side 3023 of the protrusion 302 used to set the interface 303.

[0131] It should be noted that the protrusion 302 has a first side surface 3023 for providing the interface 303, that is, the interface 303 is provided on the first side surface 3023 of the protrusion 302. The extension direction c of the first adapter is parallel to the first side surface 3023 of the protrusion 302.

[0132] By adopting the above solution, since the extension direction c of the first adapter is parallel to the first side 3023 (for example, when the first side 3023 is horizontal, the first adapter 401 also extends horizontally), the external pipeline can directly connect to the first adapter 401 in a direction parallel to the first side 3023 without additional angle adjustment or intermediate adapters. This reduces the turning requirements of the connection between the adapter 400 and the external pipeline, enabling "direct insertion" connection. It also reduces space limitations and operational complexity when connecting the adapter 400 to the external pipeline, improving assembly convenience and efficiency. Furthermore, since the adapter 400 has a bent structure, it largely avoids excessive extension of the adapter 400 in a direction perpendicular to the first side 3023, allowing for a compact layout and reducing the overall space occupied by the adapter 400. This saves the overall installation space of the battery device 1, improves the space utilization of the battery device 1, and is suitable for scenarios with limited installation space and high requirements for compactness.

[0133] Please see Figure 3 , Figure 5 , Figure 6 In some embodiments of this application, the extension direction d of the second adapter is parallel to the extension direction of the interface 303 and perpendicular to the first side surface 3023 of the protrusion 302.

[0134] It should be noted that the second adapter 402 is sealed and inserted into the interface 303, and the extension direction d of the second adapter is parallel to the extension direction of the interface 303. Both the extension direction d of the second adapter and the extension direction of the interface 303 are perpendicular to the first side surface 3023 of the protrusion 302. In conjunction with the previous embodiment, the first adapter 401 and the second adapter 402 form a 90° angle, and the interface 303 and the heat exchange channel 306 connected to it form a 90° angle.

[0135] By adopting the above solution, since the extension direction d of the second adapter and the extension direction of the interface 303 are parallel and both perpendicular to the first side surface 3023 of the protrusion 302, the insertion process of the second adapter 402 and the interface 303 can be carried out in a direction perpendicular to the first side surface 3023. This can reduce assembly errors caused by tilting or offset, improve the accuracy and fit of the sealing insertion of the adapter 400 and the interface 303, and improve the sealing reliability between the adapter 400 and the interface 303. Furthermore, in conjunction with the previous embodiment, this embodiment allows the second transition portion 402 and the interface 303 to form a 90° angle with the heat exchange channel 306 connected to the interface 303, and the first transition portion 401 to form a 90° angle with the second transition portion 402. Based on this, two 90° turning paths can be formed between the first transition portion 401 and the heat exchange channel 306 within the protrusion 302, which can regulate the flow direction of the heat exchange medium, reduce local turbulence or eddies caused by directional confusion, reduce fluid resistance loss, maintain stable flow efficiency of the heat exchange medium, and improve the temperature control response speed of the thermal management component 300. Moreover, the standardized design based on the 90° angle (between the interface 303 and the heat exchange channel 306 connected to it, and between the first transition portion 401 and the second transition portion 402) simplifies the manufacturing process of components, facilitates dimensional consistency during mass production, and reduces assembly difficulties caused by structural tolerances.

[0136] Please see Figure 3 , Figure 5 , Figure 6 In some embodiments of this application, the adapter 400 includes a plug portion 4021, which is plugged into the interior of the interface 303, and the outer wall surface of the plug portion 4021 is sealed to the inner wall surface of the interface 303.

[0137] It should be noted that the plug-in part 4021 is the portion of the adapter 400 that plugs into the interface 303. The outer wall surface of the plug-in part 4021 is sealed to the inner wall surface of the interface 303.

[0138] like Figure 5 , Figure 6 As shown, in some embodiments, a sealed connection can be achieved between the outer wall surface of the insertion portion 4021 and the inner wall surface of the interface 303 via one or more second sealing rings 800 sleeved therebetween; when multiple second sealing rings 800 are provided, the multiple second sealing rings 800 are arranged at axial intervals along the insertion portion 4021. Figure 5 , Figure 6As shown, in some embodiments, an annular groove 40211 may be provided on the outer wall surface of the insertion portion 4021. The annular groove 40211 extends circumferentially along the insertion portion 4021, and the annular groove 40211 is correspondingly provided with the second sealing ring 800. The second sealing ring 800 can be contained and housed in the annular groove 40211 and thus restricted from moving axially along the insertion portion 4021. The axial direction of the insertion portion 4021 is the direction of extension of the central axis of the insertion portion 4021, and the circumferential direction of the insertion portion 4021 is the direction of circumference of the outer peripheral surface of the insertion portion 4021.

[0139] Of course, in other embodiments, the outer wall surface of the plug portion 4021 and the inner wall surface of the interface 303 can be sealed together by other means (e.g., by interference fit or sealant).

[0140] By adopting the above solution, when the adapter 400 is inserted into the interface 303 via the plug part 4021, the sealing connection between the outer wall surface of the plug part 4021 and the inner wall surface of the interface 303 can be directly utilized to improve the sealing effect, sealing reliability, and sealing stability between the adapter 400 and the interface 303, reduce the risk of leakage, and enhance the reliability of heat exchange medium transmission.

[0141] Please see Figure 3 , Figure 5 , Figure 6 In some embodiments of this application, the adapter 400 includes a plug portion 4021, which is plugged into the interior of the interface 303. The adapter 400 also includes a stop portion 4022 connected to the plug portion 4021 and located outside the interface 303, the stop portion 4022 sealingly abutting against the end face of the interface 303.

[0142] It should be noted that the plug-in portion 4021 is the part of the adapter 400 that plugs into the interface 303, and the stop portion 4022 is the part connected to the end side of the plug-in portion 4021, located outside the interface 303, and blocking the outside of the interface 303. The end face of the stop portion 4022 facing the interface 303 seals against the end face of the interface 303 facing the stop portion 4022. Figure 5 , Figure 6 As shown, in some embodiments, the end face of the stop portion 4022 facing the interface 303 and the end face of the interface 303 facing the stop portion 4022 can be sealed together via a first sealing ring 700 sleeved on the insertion portion 4021. Of course, in other embodiments, the end face of the stop portion 4022 facing the interface 303 and the end face of the interface 303 facing the stop portion 4022 can be sealed together by other means (e.g., by sealant).

[0143] By adopting the above solution, when the adapter 400 is stopped outside the interface 303 via the stop part 4022, the sealing contact between the end face of the stop part 4022 facing the interface 303 and the end face of the interface 303 facing the stop part 4022 can be used to improve the sealing effect, sealing reliability, and sealing stability between the adapter 400 and the interface 303, reduce the risk of leakage, and enhance the reliability of heat exchange medium transmission.

[0144] This embodiment can be combined with the previous embodiment. In the combined embodiment, multiple seals can be formed between the adapter 400 and the interface 303 through the "sealed connection between the outer wall surface of the plug portion 4021 and the inner wall surface of the interface 303" and the "sealed abutment between the end face of the stop portion 4022 facing the interface 303 and the end face of the interface 303 facing the stop portion 4022". This optimizes and improves the sealing effect, sealing reliability, and sealing stability between the adapter 400 and the interface 303, reduces the risk of leakage, and enhances the reliability of heat exchange medium transmission. Of course, this embodiment and the previous embodiment can also be chosen as one of them.

[0145] Please see Figure 3 In some embodiments of this application, there are two interfaces 303, and the two interfaces 303 are located on the same protrusion 302.

[0146] It should be noted that there are two interfaces 303, and correspondingly, there are also two adapters 400. The adapters 400 and interfaces 303 that are plugged into each other form a group. One group of adapters 400 and interfaces 303 is used for the inflow of heat exchange medium, and the other group of adapters 400 and interfaces 303 is used for the outflow of heat exchange medium. The two interfaces 303 are located on the same protrusion 302.

[0147] By adopting the above scheme, a clear division of labor, "one in, one out," can be achieved through the two interfaces 303. This facilitates the construction of a complete heat exchange medium circulation path, allows for the continuous and orderly flow of the heat exchange medium between the thermal management component 300 and the external pipeline, promotes the stable operation of the thermal management function, and enables the thermal management component 300 to efficiently and reliably regulate the temperature of the battery cells. Furthermore, by placing the two interfaces 303 on the same protrusion 302, the two interfaces 303 can be integrated and compactly arranged, largely avoiding the situation of multiple protrusions 302 being scattered, reducing the occupation of external space, and improving the space utilization and structural compactness of the battery device 1. Moreover, the integrated layout of one protrusion 302 and two interfaces 303 simplifies the processing technology of the thermal management component 300, reduces production complexity, facilitates rapid alignment and assembly of the interfaces 303 and the adapter 400 during assembly, and helps reduce installation errors.

[0148] Of course, in other embodiments, two protrusions 302 may be provided, with two interfaces 303 respectively located on the two protrusions 302. In other embodiments, the plug-in adapters 400 and interfaces 303 are grouped together, and at least three groups of adapters 400 and interfaces 303 may be provided. Some adapters 400 and interfaces 303 are used for the inflow of heat exchange medium, and other adapters 400 and interfaces 303 are used for the outflow of heat exchange medium. Each interface 303 may be located on the same protrusion 302, or may be distributed on multiple protrusions 302 as needed.

[0149] Please see Figure 3 , Figure 4 , Figure 5 , Figure 6 Based on the above embodiments, this application provides a specific example of a battery device 1. The battery device 1 includes a housing 200, a thermal management component 300, and two adapters 400. The housing 200 includes a frame 203 and a mounting base 204 disposed on the outer peripheral surface of the frame 203. The thermal management component 300 includes a main body 301, a protrusion 302, and two interfaces 303.

[0150] The protrusion 302 is connected to the periphery of the main body 301 and protrudes beyond the outer peripheral surface of the frame 203. The mounting base 204 is directly opposite the protrusion 302. The mounting base 204 is a hollow structure and has a cavity 2045 extending along the second direction b. A hollow area 2041 is provided on the side of the mounting base 204 facing the protrusion 302, and the hollow area 2041 communicates with the cavity 2045. Two interfaces 303 are both located on the first side 3023 of the same protrusion 302 facing the mounting base 204, and both pass through the hollow area 2041. The mounting base 204 has through holes 2044 corresponding to the positions of the two adapters 400. The two adapters 400 pass through the two through holes 2044 one-to-one and are sealed and plugged into the two interfaces 303 one-to-one. Specifically, the adapter 400 includes a first adapter portion 401 and a second adapter portion 402. The first adapter portion 401 is connected to the second adapter portion 402 and is bent relative to the second adapter portion 402 in a direction away from the frame 203. The extension direction c of the first adapter portion is parallel to the first side surface 3023 of the protrusion 302. The extension direction d of the second adapter portion is parallel to and perpendicular to the extension direction of the interface 303, and both are perpendicular to the first side surface 3023 of the protrusion 302. The second adapter portion 402 includes a plug-in portion 4021 and a stop portion 4022. 1. The insertion part 4021 is inserted into the through hole 2044 and into the interface 303. The outer wall surface of the insertion part 4021 and the inner wall surface of the interface 303 are sealed together by two second sealing rings 800. The stop part 4022 is connected to the end side of the insertion part 4021. The stop part 4022 is located outside both the interface 303 and the through hole 2044. The stop part 4022 and the end face of the interface 303 are sealed together by a first sealing ring 700. The stop part 4022 is also detachably connected to the side of the mounting base 204 opposite to the protrusion 302 by a fastener 600. Based on the above configuration, the sealed connection between the adapter 400 and the interface 303 ensures reliable and stable transmission and flow of the heat exchange medium between the adapter 400 and the thermal management component 300. Even if leakage occurs accidentally between the adapter 400 and the interface 303, the leakage will occur outside the housing 200, preventing the leaked heat exchange medium from directly invading the battery device 1 and damaging the internal insulation environment, thus reducing the risk of performance degradation, malfunctions, and accidents caused by insulation withstand voltage failure. This maintains and improves the performance, reliability, and service life of the battery device 1. Furthermore, since the interface 303 and the adapter 400 are located outside the outer periphery of the frame 203, during after-sales maintenance, the adapter 400 can be disassembled and replaced directly outside the housing 200 without disassembling the housing 200. This simplifies operation, facilitates after-sales maintenance and repair, and improves after-sales maintenance efficiency.

[0151] The mounting base 204, facing the protrusion 302, is initially sealed to the protrusion 302 via brazing. Then, structural adhesive 500 is injected through the cavity 2045 or perforation 2044 into the hollow area 2041. This allows the structural adhesive 500 to actively penetrate and fill the gap between the mounting base 204 and the protrusion 302, especially filling the hard-to-detect pores formed by brazing. Based on this, the combination of brazing and structural adhesive 500 achieves a reliable seal between the mounting base 204 and the protrusion 302. The edges of the mounting base 204 facing the frame 203 are sealed to the frame 203 via welding (e.g., fusion welding). The main body 301 covers one opening of the frame 203, and the periphery of the main body 301 is sealed to the frame 203 via welding (e.g., pressure welding). The main body 301 and the frame 203 together form a space for accommodating the battery cell. The protrusion 302 has two first edges 3021, which are spaced apart and opposite each other along the second direction b and both extend along the first direction a. The first edges 3021 are welded to the mounting base 204 to form a first solder mark 3022. The main body 301 includes a plate portion 3011 and an extension portion 3012 connected between the plate portion 3011 and the protrusion 302. The extension portion 3012 has two second edges 30121, which are spaced apart and opposite each other along the second direction b and both extend along the first direction a. The mounting base 204 has two third edges 2042 on the side facing the frame 203. These two third edges 2042 are spaced apart and opposite each other along a second direction b. The third edges 2042 are welded to the frame 203 to form a third weld 2043. On the same side along the second direction b, the second weld 30122 and the first weld 3022 are collinearly arranged, and the third weld 2043 is perpendicular to the collinearly arranged first weld 3022 and second weld 30122. The second direction b is perpendicular to the first direction a. Based on the above configuration, the sealing reliability between the main body 301 and the frame 203, between the protrusion 302 and the mounting base 204, and between the mounting base 204 and the frame 203 can be optimized. In particular, the "triangular area" formed at the intersection of the frame 203, the mounting base 204, and the thermal management component 300 (i.e., the extension 3012 and the protrusion 302) can be precisely and reliably sealed, thereby essentially blocking the airtightness failure path, reducing unnecessary communication between the inside of the housing 200 and the external environment, and improving the overall sealing reliability and operational reliability of the battery device 1. Furthermore, the sealing path of "directly sealing the protrusion 302 with the frame 203 along the edge of the frame 203" can be avoided, and the damage to the heat exchange channel 306 due to the intersection of the sealing path and the heat exchange channel 306 can be avoided, thus maintaining the structural integrity and heat exchange function stability of the heat exchange channel 306 and the thermal management component 300.

[0152] Please see Figure 3 Some embodiments of this application provide an electrical device, including the battery device 1 provided in the embodiments of this application.

[0153] By adopting the above solution, the electrical device can improve its performance, reliability, service life, after-sales maintenance convenience, and after-sales maintenance efficiency by using the battery device 1 provided in the embodiments of this application.

[0154] The above are merely optional 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 scope of the claims of this application.

Claims

1. A battery device, characterized in that, include: The enclosure, including the frame; A thermal management component includes a main body, a protrusion, and an interface. The main body covers the frame, and the periphery of the main body is sealed to the frame. The main body and the frame together enclose a receiving space for accommodating a battery cell. The protrusion is connected to the periphery of the main body and protrudes beyond the outer peripheral surface of the frame. The interface is located on the protrusion. The adapters correspond one-to-one with the interfaces and are sealed during insertion. The housing also includes a mounting base, which is disposed on the outer peripheral surface of the frame and directly opposite the protrusion. The side of the mounting base facing the protrusion is sealed to the protrusion, and the side of the mounting base facing the frame is sealed to the frame.

2. The battery device as claimed in claim 1, characterized in that, The mounting base is brazed to the protrusion on the side facing the protrusion.

3. The battery device as claimed in claim 2, characterized in that, Structural adhesive is used to fill the space between the mounting base and the protrusion.

4. The battery device as claimed in claim 3, characterized in that, The mounting base has a hollow area on the side facing the protrusion; The mounting base has a cavity that connects the hollowed-out area to the outside of the mounting base; and / or, the mounting base has a through hole on the side opposite to the protrusion that connects the hollowed-out area to the outside of the mounting base; The structural adhesive is filled between the mounting base and the protrusion through the hollowed-out area.

5. The battery device as claimed in claim 1, characterized in that, The mounting base is welded to the frame along each edge facing the frame.

6. The battery device as claimed in claim 1, characterized in that, The protrusion has two first edges extending along a first direction and spaced apart from each other along a second direction. The first edges are welded to the mounting base to form a first weld mark. The second direction is perpendicular to the first direction.

7. The battery device as claimed in claim 6, characterized in that, The main body includes a plate portion and an extension portion connected between the plate portion and the protrusion portion. The extension portion has two second edges that extend along the first direction and are spaced apart from each other along the second direction. The second edges are welded to the frame to form a second weld mark. The second weld mark and the first weld mark located on the same side along the second direction are collinear. The mounting base has two opposing third edges on one side facing the frame, spaced apart along the second direction. The third edges are welded to the frame to form a third weld mark, which is perpendicular to the first and second weld marks.

8. The battery device according to any one of claims 1-7, characterized in that, The interface is located on the side of the protrusion facing the mounting base. The mounting base has a through hole corresponding to the position of the adapter. Part of the adapter passes through the through hole and is sealed and plugged into the interface. The other part of the adapter protrudes from the through hole and is connected to the side of the mounting base facing away from the protrusion.

9. The battery device as claimed in claim 8, characterized in that, The adapter is detachably connected to the side of the mounting base opposite to the protrusion via fasteners.

10. The battery device according to any one of claims 1-7, characterized in that, The adapter includes a first adapter portion and a second adapter portion, the second adapter portion being sealed and plugged into the interface, the first adapter portion being connected to the second adapter portion and bent relative to the second adapter portion in a direction away from the frame.

11. The battery device according to any one of claims 1-7, characterized in that, The adapter includes a plug-in portion that is inserted into the interior of the interface; The outer wall surface of the plug portion is sealed to the inner wall surface of the interface, and / or the adapter further includes a stop portion connected to the plug portion and located outside the interface, the stop portion sealingly abutting against the end face of the interface.

12. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-11.

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