Thermal management component, battery device, and electric device

Abstract

The embodiment of the present application provides a kind of thermal management component, battery device and electric device, can improve the use performance of thermal management component.The thermal management component includes: current collector, heat exchange pipe and blocking component, current collector is set to at least one end of heat exchange pipe along the first direction, heat exchange pipe includes at least one first flow channel and at least one second flow channel, first flow channel and second flow channel are through heat exchange pipe along the first direction, second flow channel is communicated with current collector, wherein, blocking component is bonded to the inner wall of the side of first flow channel close to current collector, to block at least one end of first flow channel along the first direction, the hardness of the material of blocking component is less than the hardness of the material of heat exchange pipe, first direction is perpendicular to the thickness direction of heat exchange pipe.

Description

Technical Field

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

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

[0003] During the use of a battery device, its temperature will continuously rise depending on the usage scenario. Typically, a thermal management component needs to be installed inside the battery device to regulate its temperature. Therefore, improving the performance of this thermal management component has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] This application provides a thermal management component, a battery device, and an electrical device, which can improve the performance of the thermal management component.

[0005] In a first aspect, a thermal management component is provided, comprising: a current collector, a heat exchange tube, and a sealing component. The current collector is disposed at at least one end of the heat exchange tube along a first direction. The heat exchange tube includes at least one first flow channel and at least one second flow channel, the first flow channel and the second flow channel extending through the heat exchange tube along the first direction, the second flow channel communicating with the current collector. The sealing component is bonded to the inner wall of the first flow channel near the current collector to seal at least one end of the first flow channel along the first direction. The hardness of the material of the sealing component is less than the hardness of the material of the heat exchange tube, and the first direction is perpendicular to the thickness direction of the heat exchange tube.

[0006] In this embodiment, a sealing component is provided in the thermal management component, and the sealing component is bonded to the inner wall of the first flow channel near the collector to seal at least one end of the first flow channel along the first direction. The hardness of the material of the sealing component is less than that of the heat exchange tube material, so as to reduce the impact of the sealing component on the first flow channel during the use of the thermal management component, that is, to reduce the risk of deformation of the first flow channel, while improving the sealing performance of the first flow channel of the thermal management component and reducing the weight of the heat exchange medium in the thermal management component, so as to balance the heat exchange performance and weight of the thermal management component, thereby improving the performance of the thermal management component.

[0007] In some embodiments, the blocking component is disposed at both ends of the first flow channel along the first direction.

[0008] In this embodiment of the application, by placing the sealing component at both ends of the first flow channel along the first direction, the impact of the sealing component on the first flow channel can be effectively reduced during the use of the thermal management component. That is, the risk of deformation of the first flow channel can be effectively reduced, and the sealing performance of the first flow channel of the thermal management component can be further improved, thereby improving the performance of the thermal management component.

[0009] In some embodiments, along the first direction, the minimum dimension D1 between the surface of the sealing member near the collector and the end of the heat exchange tube near the collector satisfies: 0mm < D1 ≤ 2mm.

[0010] In this embodiment, the minimum dimension D1 between the surface of the sealing component near the current collector and the end of the heat exchange tube near the current collector is set to satisfy: 0mm < D1 ≤ 2mm. This balances the sealing performance of the sealing component to the first flow channel and the assembly performance of the thermal management component. It also facilitates the formation of an area for accommodating structural adhesive between the sealing component and the current collector, so as to bond the sealing component to the inner wall of the first flow channel, thereby improving the performance of the thermal management component.

[0011] In some embodiments, the surface of the sealing member near the current collector is parallel to the surface formed at the end of the heat exchange tube near the current collector.

[0012] In this embodiment, by setting the surface of the sealing component near the current collector as parallel to the end of the heat exchange tube near the current collector, the sealing performance of the sealing component to the first flow channel and the assembly performance of the thermal management component are effectively balanced. At the same time, it is convenient to form an area for accommodating structural adhesive between the sealing component and the current collector, which can effectively bond the sealing component to the inner wall of the first flow channel, thereby further improving the performance of the thermal management component.

[0013] In some embodiments, the side of the sealing member away from the current collector is provided with a groove structure having an opening away from the current collector.

[0014] In this embodiment of the application, by providing a groove structure with an opening away from the current collector on the side of the sealing component away from the current collector, the weight and assembly performance of the thermal management component are taken into account, while reducing the risk of deformation of the first flow channel, thereby improving the performance of the thermal management component.

[0015] In some embodiments, the sealing component is a hollow structure.

[0016] In this embodiment of the application, by setting the sealing component as a hollow structure, the weight and assembly performance of the thermal management component can be balanced, while reducing the risk of deformation of the first flow channel, improving the product consistency of the sealing component, and thus improving the performance of the thermal management component.

[0017] In some embodiments, the dimension of the sealing component gradually decreases in the thickness direction of the thermal management component along the first direction and toward the geometric center of the first flow channel.

[0018] In this embodiment of the application, by setting the size of the sealing component in the thickness direction of the thermal management component to gradually decrease along the first direction and toward the geometric center of the first flow channel, the sealing performance of the sealing component to the first flow channel and the assembly performance of the thermal management component can be effectively balanced, while the weight of the thermal management component can be reduced, thereby improving the performance of the thermal management component.

[0019] In some embodiments, the material of the sealing component includes at least one of the following: polystyrene thermoplastic elastomers, thermoplastic dynamic vulcanized rubber, and EPDM rubber.

[0020] In this embodiment of the application, by setting the material of the sealing component to include at least one of the following: polystyrene thermoplastic elastomer, thermoplastic dynamic vulcanized rubber, and EPDM rubber, the sealing performance of the sealing component to the first flow channel is improved, while effectively reducing the risk of deformation of the first flow channel, thereby improving the performance of the thermal management component.

[0021] In some embodiments, the hardness of the sealing component is greater than or equal to 20 and less than or equal to 90 Shore A.

[0022] In this embodiment of the application, by setting the hardness of the sealing component to be greater than or equal to 20 and less than or equal to 90 Shore A, the risk of deformation of the first flow channel is effectively reduced, which facilitates the welding connection between the heat exchange tube and the collector, thereby improving the performance of the thermal management component.

[0023] In a second aspect, a battery device is provided, comprising: a battery cell; and a thermal management component as described in any one of the first aspects, the thermal management component being used to regulate the temperature of the battery cell.

[0024] In some embodiments, the number of thermal management components is multiple, at least one battery cell is disposed between any two adjacent thermal management components, and the multiple thermal management components are interconnected.

[0025] In this embodiment of the application, by setting the number of thermal management components to multiple, and at least one battery cell is provided between any two adjacent thermal management components, and the multiple thermal management components are interconnected, the temperature of the battery cell can be effectively adjusted by the thermal management components, thereby improving the performance of the battery device.

[0026] In some embodiments, the orthographic projection of the sealing component lies within the orthographic projection of the battery cell on a plane perpendicular to the thickness direction of the heat exchange tube.

[0027] In this embodiment, by setting the orthographic projection of the sealing component to be located within the orthographic projection of the battery cell on a plane perpendicular to the thickness direction of the heat exchange tube, the deformation of the battery cell can be absorbed by the sealing component during the use of the battery device, thereby reducing the risk of thermal runaway of the battery cell and improving the performance of the battery device.

[0028] Thirdly, an electrical device is provided, including the battery device described in the second aspect, the battery device being used to provide electrical energy to the electrical device.

[0029] In some implementations, the electrical device can be a vehicle, ship, or spacecraft. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application 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 the drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application.

[0033] Figure 3 This is an exploded structural diagram of a portion of the battery device provided in another embodiment of this application.

[0034] Figure 4 This is an exploded structural diagram of a battery cell provided in an embodiment of this application.

[0035] Figure 5 This is an exploded structural diagram of a battery cell provided in another embodiment of this application.

[0036] Figure 6 This is a schematic diagram of the structure of a thermal management component provided in an embodiment of this application.

[0037] Figure 7 This is a partial structural schematic diagram of a thermal management component provided in an embodiment of this application.

[0038] Figure 8 This is a partial cross-sectional schematic diagram of a thermal management component provided in an embodiment of this application.

[0039] Figure 9 This is a partially enlarged cross-sectional schematic diagram of a thermal management component provided in an embodiment of this application.

[0040] Figure 10 This is a schematic diagram of the structure of a sealing component provided in an embodiment of this application.

[0041] Explanation of reference numerals in the attached drawings: 1-Vehicle; 10-Battery unit; 20-Battery cell; 30-Controller; 40-Motor; 11-Casing; 111-First part; 112-Second part; 112a-Base plate; 112b-Side plate; 21-Outer shell; 22-Electrode assembly; 211-Shell; 212-End cap; 222-Electrode tab; 222a-Positive electrode tab; 222b-Negative electrode tab; 213-Pressure relief mechanism; 214-Electrode terminal; 214a-First electrode terminal; 214b-Second electrode terminal; 23-Adapter component; 50-Receiving cavity; 510-Opening; 60-Thermal management component; 610-Current collector; 620-Heat exchange tube; 630-Sealing component; 640-Gate; 621-First flow channel; 622-Second flow channel; 631-Groove structure.

[0042] The accompanying drawings are not drawn to scale. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0045] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0048] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0049] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0050] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0051] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0052] The battery cell in this application embodiment can be a rechargeable battery, which refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. For example, the battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.

[0053] The electrode assembly in this embodiment includes a positive electrode, a negative electrode, and a separator, with the separator disposed between the negative and positive electrodes. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, disposed between the positive and negative electrodes, serves to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0054] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0055] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0056] As an example, the positive current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0057] In some embodiments, the positive electrode can be a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. When foamed metal is used as the positive electrode, the surface of the foamed metal may or may not contain a positive electrode active material. As an example, a positive electrode active material is filled and / or deposited within the foamed metal.

[0058] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0059] As an example, the negative electrode current collector can be a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, pure metals, alloys, or surface-treated metals can be used, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver. The composite current collector may include a polymer material substrate and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloys, nickel, nickel alloys, titanium, titanium alloys, silver, and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0060] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0061] As an example, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0062] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cells. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials for battery cells may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0063] In some embodiments, the negative electrode can be a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. When foamed metal is used as the negative electrode sheet, the surface of the foamed metal may or may not have a negative electrode active material.

[0064] As an example, negative electrode active materials can be filled or / and deposited within the negative electrode current collector.

[0065] In some embodiments, the positive current collector can be made of aluminum, and the negative current collector can be made of copper.

[0066] In some embodiments, the electrode assembly further includes an isolator disposed between the positive and negative electrodes.

[0067] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0068] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a single component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes. An inorganic particle coating, an organic particle coating, or an organic / inorganic composite coating can also be applied to the surface of the separator.

[0069] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0070] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte; it can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0071] Liquid electrolytes include electrolyte salts and solvents.

[0072] In some embodiments, the electrolyte may optionally include additives. For example, additives may include negative electrode film-forming additives, positive electrode film-forming additives, and additives that can improve certain properties of the battery cell, such as additives that improve the overcharge / fast charge performance of the battery cell, additives that improve the high-temperature performance of the battery cell, and additives that improve the low-temperature performance of the battery cell.

[0073] The gel electrolyte includes a polymer as a backbone network and can be used in conjunction with an ionic liquid-lithium salt.

[0074] Solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0075] As an example, the polymers of polymeric solid electrolytes may include polyethers (polyoxyethylene), polysiloxanes, polycarbonates, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, monoionic polymers, polyionic liquids, cellulose, etc.

[0076] As an example, inorganic solid electrolytes can be one or more of the following: oxide solid electrolytes (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON thin film), sulfide solid electrolytes (crystalline lithium superconducting ion conductor (lithium germanium phosphorus sulfide, silver sulfide germanium ore), amorphous sulfides), halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0077] As an example, composite solid electrolytes are formed by adding inorganic solid electrolyte fillers to polymer solid electrolytes.

[0078] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0079] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0080] In some implementations, the electrode assembly is a stacked structure.

[0081] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0082] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0083] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0084] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0085] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0086] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0087] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0088] In some embodiments, the battery cell may include a casing. The casing may be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc. In some embodiments, the casing may be a sealed structure or a non-sealed structure. As an example, when the casing is a non-sealed structure, the casing serves to protect the electrode assembly, and a sealing bag is included between the casing and the electrode assembly to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag may be a bag-shaped insulating component or an aluminum-plastic film. When the casing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0089] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0090] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal can be directly connected to the tab, or it can be indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing.

[0091] In some embodiments, a pressure relief mechanism is provided on the casing. The pressure relief mechanism is used to release the internal gas of the battery cell.

[0092] As an example, the internal pressure or temperature of a battery cell is actuated to release the internal pressure or temperature when it reaches a predetermined threshold. When the internal pressure or temperature of the battery cell reaches the predetermined threshold, the pressure relief mechanism is activated or a weak structure in the pressure relief mechanism is broken, thereby creating an opening or channel for the internal pressure or temperature to be released. The threshold design varies depending on the design requirements. The threshold may depend on the materials of one or more of the positive electrode, negative electrode, electrolyte, and separator in the battery cell.

[0093] As an example, the pressure relief mechanism can be integrally molded with the housing.

[0094] As an example, the pressure relief mechanism can also be separately installed and connected to the housing.

[0095] The term "actuation" as used in this application refers to the activation or actuation of the pressure relief mechanism to a certain state, thereby releasing the internal pressure and temperature of the battery cell. The actions of the pressure relief mechanism may include, but are not limited to: movement of components within the mechanism to form an exhaust channel, rupture, breakage, tearing, or opening of at least a portion of the mechanism, etc. When the pressure relief mechanism is activated, the high-temperature, high-pressure substances inside the battery cell are discharged as waste from the activated portion. This method allows for pressure and temperature relief of the battery cell under controllable pressure or temperature, thereby preventing potentially more serious accidents.

[0096] In some embodiments, when the housing is a non-sealed structure, the pressure relief mechanism can be configured as a through hole for venting gas inside the battery cell.

[0097] The emissions from battery cells mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0098] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0099] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0100] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0101] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

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

[0103] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0104] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0105] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0106] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0107] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0108] Currently, energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development. During the use of a battery device, its temperature continuously rises depending on the usage scenario, typically requiring the installation of thermal management components within the battery device to regulate its temperature. Battery temperature is a critical issue; if it is not effectively controlled, the battery device becomes unusable, reducing its performance. For example, thermal management components used in battery devices include interconnected current collectors and heat exchange tubes. The heat exchange tubes are typically harmonica-shaped, meaning they can include multiple flow channels extending along their length. When a heat exchange medium is introduced into the thermal management component, it fills these channels to regulate the temperature of the individual battery cells. However, this heat exchange tube structure results in a significant weight for the thermal management component, hindering its lightweight design. To address this, a sealing plate structure is typically incorporated into the thermal management component to seal off portions of the multiple flow channels. However, this sealing plate structure, due to its shallow insertion depth and limited adhesive application, exhibits poor sealing performance. Furthermore, the material of the sealing plate structure is usually quite hard, which can easily cause deformation in certain areas of the heat exchange tube, affecting the welding process between the heat exchange tube and the manifold. This reduces the performance of the thermal management component and consequently impacts the performance of the battery device. Therefore, improving the performance of this thermal management component has become a pressing technical problem in this field.

[0109] Therefore, embodiments of this application provide a thermal management component, a battery device, and an electrical device. The thermal management component includes a current collector, a heat exchange tube, and a sealing component. The current collector is disposed at at least one end of the heat exchange tube along a first direction. The heat exchange tube includes at least one first flow channel and at least one second flow channel, which penetrate the heat exchange tube along the first direction. The second flow channel communicates with the current collector. The sealing component is bonded to the inner wall of the first flow channel near the current collector to seal at least one end of the first flow channel along the first direction. The hardness of the material of the sealing component is less than the hardness of the material of the heat exchange tube. The first direction is perpendicular to the thickness direction of the heat exchange tube. Thus, in this embodiment of the application, by providing a sealing component in the thermal management component, and the sealing component being bonded to the inner wall of the first flow channel near the collector, at least one end of the first flow channel along the first direction is sealed. The hardness of the material of the sealing component is less than that of the heat exchange tube material, so as to reduce the impact of the sealing component on the first flow channel during the use of the thermal management component, that is, to reduce the risk of deformation of the first flow channel, while improving the sealing performance of the first flow channel of the thermal management component and reducing the weight of the heat exchange medium in the thermal management component, so as to balance the heat exchange performance and weight of the thermal management component, thereby improving the performance of the thermal management component.

[0110] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices.

[0111] Electrical devices can include 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. This application does not impose any special limitations on the above-mentioned electrical devices.

[0112] It should be understood that the technical solutions described in the embodiments of this application are not limited to the electrical devices described above, but can also be applied to all devices that use batteries. For the sake of simplicity, the following embodiments will be described in detail using a vehicle as an example of an electrical device.

[0113] For example, such as Figure 1The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 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 motor 40, a controller 30, and a battery device 10 can be installed inside vehicle 1. The controller 30 controls the battery device 10 to supply power to the motor 40. For example, the battery device 10 can be installed at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1, for example, to meet the electrical system requirements of vehicle 1, such as for starting, navigation, and operation. In another embodiment of this application, the battery device 10 can not only serve as the operating power source for vehicle 1, but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0114] To meet different power demands, the battery device 10 in this embodiment may include at least one battery cell assembly, which comprises multiple battery cells. These multiple battery cells can be electrically connected in series, parallel, or a combination thereof to form the battery device 10. A combination of series and parallel connections is used. The battery device 10 may also be referred to as a battery pack. For example, multiple battery cells can first be connected in series, parallel, or a combination to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination thereof to form the battery device 10. That is, multiple battery cells can directly form the battery device 10, or they can first be assembled into battery modules, and then the battery modules can be assembled into the battery device 10.

[0115] For example, such as Figure 2 and Figure 3 The diagram shown is a structural schematic of a battery device 10 according to an embodiment of this application. The battery device 10 may include multiple battery cells 20. The battery device 10 may also include a housing 11 (or cover), which has a hollow interior structure, and the multiple battery cells 20 are housed within the housing 11. For example, the multiple battery cells 20 may be connected in parallel, series, or a mixed configuration and then placed inside the housing 11.

[0116] like Figure 2 and Figure 3As shown, the housing 11 may include two parts, referred to here as the first part 111 and the second part 112, which are fastened together. The shapes of the first part 111 and the second part 112 can be determined according to the combined shape of multiple battery cells 20. Both the first part 111 and the second part 112 may have an opening. For example, both the first part 111 and the second part 112 may be hollow cuboids with only one open face. The openings of the first part 111 and the second part 112 are opposite to each other, and the first part 111 and the second part 112 are fastened together to form a housing 11 with a closed cavity. The housing may include a bottom plate 112a, side plates 112b, and beams. Multiple battery cells 20 are connected in parallel, series, or mixed configurations and placed inside the housing 11 formed by the fastening of the first part 111 and the second part 112.

[0117] Optionally, the battery device 10 may also include other structures, which will not be described in detail here. For example, the battery device 10 may also include a busbar component for realizing the electrical connection between multiple battery cells 20, such as parallel, series, or mixed connection. Specifically, the busbar component can realize the electrical connection between battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the busbar component can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can be further led out through the housing by a conductive mechanism. Optionally, the conductive mechanism may also be part of the busbar component.

[0118] The number of battery cells 20 can be set to any value depending on different power requirements. Multiple battery cells 20 can be connected in series, parallel, or mixed to achieve a larger capacity or power. Since each battery device 10 may include a large number of battery cells 20, for ease of installation, the battery cells 20 can be grouped, with each group of battery cells 20 forming a battery module. The number of battery cells 20 included in a battery module is unlimited and can be set according to requirements.

[0119] In this embodiment, the number of battery cells 20 can be set to any value according to different power requirements. Multiple battery cells 20 can be connected in series, parallel, or mixed connection to achieve a larger capacity or power. Since each battery device 10 may include a large number of battery cells 20, for ease of installation, the battery cells 20 can be grouped, with each group of battery cells 20 forming a battery module. The number of battery cells 20 included in a battery module is not limited and can be set according to requirements. The battery device 10 may include multiple battery modules, which can be connected in series, parallel, or mixed connection.

[0120] In this embodiment, the battery device 10 may further include at least one thermal management component 60. This thermal management component 60 can be used to regulate the temperature of the individual battery cells 20 within the battery device 10. For example, the thermal management component 60 can contain a heat exchange medium to regulate the temperature of the individual battery cells 20. Specifically, when cooling the individual battery cells 20, the thermal management component 60 can contain a cooling medium to regulate the temperature of the individual battery cells 20. In this case, the thermal management component 60 can also be referred to as a cooling component, cooling system, or cooling plate, etc. Additionally, the thermal management component 60 can also be used for heating; this embodiment is not limited to this. Optionally, the fluid in the thermal management component 60 can be circulated to achieve a better temperature regulation effect.

[0121] In some embodiments, the battery device 10 includes multiple rows of battery cells 20, each row of battery cells 20 includes a plurality of battery cells 20, and a thermal management component 60 may be disposed between each adjacent pair of rows of battery cells 20. Specifically, as Figure 3 As shown, arranging multiple battery cells 20 in the battery device 10 in a direction perpendicular to the height of the battery device 10 facilitates processing and assembly and improves the space utilization inside the battery device 10. By placing each of the at least one thermal management component 60 between each two adjacent rows of battery cells 20, the thermal management component 60 can simultaneously regulate the temperature of the two adjacent rows of battery cells 20.

[0122] It should be understood that, such as Figure 3 As shown, if the battery device 10 is provided with a plurality of thermal management components 60, for example, the battery device 10 may include a plurality of thermal management components 60 arranged in the same direction as the battery cells 20. The plurality of thermal management components 60 can be interconnected to facilitate the circulation of fluids inside the plurality of thermal management components 60, thereby improving the working efficiency of the thermal management components 60.

[0123] Figure 4 This diagram shows an exploded view of the battery cell 20 provided in one embodiment of the present application. Figure 5 An exploded structural diagram of a battery cell 20 according to another embodiment of this application is shown. Figure 4 and Figure 5 As shown, the battery cell 20 in this embodiment may include: a housing 21 and an electrode assembly 22. The housing 21 has a closed receiving cavity 50, and the electrode assembly 22 is placed in the receiving cavity 50 within the housing 21. The housing 21 may include a shell 211 and an end cap 212. The shell 211 is a hollow structure with at least one opening 510; the end cap 212 is used to fasten with the shell 211 to form the housing 21 with the closed receiving cavity 50.

[0124] In some embodiments, the end cap 212 may be a plate-like structure used to cover the opening 510 of the housing 211. In other embodiments, the end cap 212 has a similar structure to the housing 211, that is, both the housing 211 and the end cap 212 are hollow structures with one opening 510, and the two openings 510 are joined together to form an outer shell 21 with a closed accommodating space.

[0125] It should be understood that if the end cap 212 is a plate-like structure, the housing 211 can be a hollow structure with one or more openings 510. For example, if the housing 211 is a hollow structure with one opening 510, the end cap 212 can be set as one; if the housing 211 is a hollow structure with openings 510 at opposite ends, the end cap 212 can be set as two, and the two end caps 212 respectively cover the openings 510 at both ends of the housing 211.

[0126] The outer shell 21 can be of various shapes, such as a cylinder, a cuboid, or other polyhedrons. For example, ... Figure 4 and Figure 5 As shown in the embodiments of this application, the description mainly takes the outer shell 21 as a cuboid structure.

[0127] It should be understood that the end cap 212 in this embodiment is used to cooperate with the housing 211 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 212 can be adapted to the shape of the housing 211, such as... Figure 4 and Figure 5 As shown, the shell 211 has a cuboid structure, and the end cap 212 has a rectangular plate structure that is adapted to the shell 211.

[0128] The material of the housing 211 in this embodiment may include one or more materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The material of the end cap 212 may also be one or more materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The material of the end cap 212 may be the same as or different from that of the housing 211; the materials of the different walls of the housing 211 may also be the same or different.

[0129] The end cap 212 in this embodiment can be any wall of the outer shell 21. For example, the end cap 212 can be the wall with the largest area among the multiple walls included in the outer shell 21, or the wall with the smallest area, or it can be other walls. This embodiment is not limited to this. Alternatively, the end cap 212 can also be other structures. For example, the end cap 212 can also be a groove with an opening to cover the opening 510 of the housing 211. This embodiment is not limited to this.

[0130] It should be understood that the battery cell 20 also includes electrode terminals 214. In this embodiment, the electrode terminals 214 are used for electrical connection with the electrode assembly 22 inside the battery cell 20 to output the electrical energy of the battery cell 20. Figure 4 and Figure 5 As shown, the battery cell 20 may include at least two electrode terminals 214, which may include at least one first electrode terminal 214a and at least one second electrode terminal 214b. Exemplarily, if the first electrode terminal 214a is a positive electrode terminal, it is used for electrical connection to the positive electrode tab 222a of the electrode assembly 22; if the second electrode terminal 214b is a negative electrode terminal, it is used for electrical connection to the negative electrode tab 222b of the electrode assembly 22. The first electrode terminal 214a and the positive electrode tab 222a can be directly connected or indirectly connected, as can the second electrode terminal 214b and the negative electrode tab 222b. Exemplarily, the first electrode terminal 214a can be electrically connected to the positive electrode tab 222a via an adapter 23, and the second electrode terminal 214b can be electrically connected to the negative electrode tab 222b via an adapter 23. It should be understood that in the embodiments of this application, the positive electrode tab 222a and the negative electrode tab 222b can be collectively referred to as electrode tab 222.

[0131] In this embodiment, the wall of the housing 211 and the wall of the end cap 212 are both referred to as the wall of the battery cell 20. Figure 4 and Figure 5 The rectangular battery cell 20 shown has a housing 211 with a bottom wall and four side walls. The housing 211 is shaped according to the combination of one or more electrode assemblies 22. For example, the housing 211 can be a hollow cuboid, cube, or cylinder, and one face of the housing 211 has an opening to allow one or more electrode assemblies 22 to be placed inside. For example, when the housing 211 is a hollow cuboid or cube, one plane of the housing 211 is an open face, meaning that this plane has no wall, allowing communication between the inside and outside of the housing 211. When the housing 211 is a hollow cylinder, the end face of the housing 211 is an open face, meaning that this end face has no wall, allowing communication between the inside and outside of the housing 211. An end cap 212 covers the opening and connects to the housing 211 to form a closed cavity for placing the electrode assemblies 22. The housing 211 is filled with an electrolyte, such as an electrolyte solution.

[0132] In this battery cell 20, the electrode assembly 22 is the component in which the electrochemical reaction occurs. Depending on actual usage requirements, the electrode assembly 22 within the casing 211 can be one or multiple. For example, as... Figure 5As shown, two electrode assemblies 22 are provided inside the battery cell 20. The electrode assembly 22 can be a cylinder, a cuboid, etc. If the electrode assembly 22 is a cylindrical structure, the housing 211 can also be a cylindrical structure. If the electrode assembly 22 is a cuboid structure, the housing 211 can also be a cuboid structure.

[0133] A pressure relief mechanism 213 may also be provided on the battery cell 20. The pressure relief mechanism 213 is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.

[0134] The pressure relief mechanism 213 can be any of the possible pressure relief mechanisms 213. For example, the pressure relief mechanism 213 can be a temperature-sensitive pressure relief mechanism, which is configured to melt when the internal temperature of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold; and / or, the pressure relief mechanism 213 can be a pressure-sensitive pressure relief mechanism, which is configured to rupture when the internal gas pressure of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold.

[0135] Figure 6 A schematic diagram of the structure of a thermal management component 60 provided in an embodiment of this application is shown. Figure 7 A partial structural schematic diagram of a thermal management component 60 provided in one embodiment of this application is shown. Figure 8 A partial cross-sectional schematic diagram of a thermal management component provided in an embodiment of this application is shown.

[0136] In some implementations, such as Figures 6 to 8 As shown, the thermal management component 60 includes: a current collector 610, a heat exchange tube 620, and a sealing component 630. The current collector 610 is disposed at at least one end of the heat exchange tube 620 along a first direction. The heat exchange tube 620 includes at least one first flow channel 621 and at least one second flow channel 622. The first flow channel 621 and the second flow channel 622 penetrate the heat exchange tube 620 along the first direction. The second flow channel 622 communicates with the current collector 610. The sealing component 630 is bonded to the inner wall of the first flow channel 621 near the current collector 610 to seal at least one end of the first flow channel 621 along the first direction. The hardness of the material of the sealing component 630 is less than the hardness of the material of the heat exchange tube 620. The first direction is perpendicular to the thickness direction of the heat exchange tube 620.

[0137] It should be understood that, for ease of description, this application defines three directions: the first direction, the second direction, and the third direction. Specifically, as follows... Figures 6 to 8As shown, the first direction can be direction X, the second direction can be direction Y, and the third direction can be direction Z. The first direction is perpendicular to the second direction and the third direction, and the first direction can be the length direction or the extension direction of the heat exchange tube 620. The second direction is perpendicular to the first direction and the third direction, and the second direction can be the thickness direction of the heat exchange tube 620 or the thickness direction of the current collector 610. The third direction is perpendicular to the first direction and the second direction, and the third direction can be the width direction of the heat exchange tube 620.

[0138] It should also be understood that, in the embodiments of this application, the current collector 610 being disposed at both ends of the heat exchange tube 620 along the first direction can mean that the current collector 610 can be disposed at one end or both ends of the heat exchange tube 620 along the first direction. For example, as shown in the example... Figure 6 As shown, the current collector 610 is disposed at both ends of the heat exchange tube 620 along the first direction. It should also be understood that, in the embodiments of this application, the current collector 610 being disposed at both ends of the heat exchange tube 620 along the first direction can mean that the side of the current collector 610 facing the heat exchange tube 620 is welded to the side of the heat exchange tube 620 facing the current collector 610.

[0139] It should also be understood that the shape of the heat exchange tube 620 in the embodiments of this application can be set according to actual needs. For example, the shape of the heat exchange tube 620 can be set as follows: Figure 6 and Figure 7 The hollow plate-like structure shown in the figure.

[0140] It should also be understood that the heat exchange tube 620 is configured to include at least one first flow channel 621 and at least one second flow channel 622, the first flow channel 621 and the second flow channel 622 extending through the heat exchange tube 620 along the first direction, and the number of the first flow channel 621 and the second flow channel 622 can be set according to actual needs, and the number of the first flow channel 621 and the number of the second flow channel 622 can be the same or different.

[0141] It should also be understood that the second flow channel 622 in this embodiment is interconnected with the current collector 610, which means that the current collector 610 has a cavity inside, and the heat exchange medium flowing through the second flow channel 622 can flow into the cavity in the current collector 610 to regulate the temperature of the battery cell 20.

[0142] It should also be understood that, on a plane perpendicular to the Y direction, the shapes of the first flow channel 621 and the second flow channel 622 in this embodiment can be set according to actual needs. The shapes of the first flow channel 621 and the second flow channel 622 can be set to the same shape or different shapes. For example, the shapes of the first flow channel 621 and the second flow channel 622 can both be set to square.

[0143] It should also be understood that the thermal management component 60 in this embodiment of the application is further provided with a water inlet 640 communicating with the receiving cavity of the current collector 610. The water inlet 640 penetrates the current collector 610 along the direction Y. The water inlet 640 can be configured as an inlet on one side along the direction Y and as an outlet on the other side along the direction Y.

[0144] It should also be understood that the position of the sealing component 630 bonded to the inner wall of the first flow channel 621 near the collector 610 can be set according to actual needs. That is, the dimension between the surface of the sealing component 630 near the collector 610 and the end of the heat exchange tube 620 facing the collector 610 can be set according to actual needs. For example, during the assembly of the sealing component 630, the sealing component 630 can be first interference-fitted to the inner wall of the first flow channel 621, and then structural adhesive can be applied to the surface of the sealing component 630 facing the collector, or the surface of the sealing component 630 away from the geometric center of the first flow channel 621, to achieve sealing treatment of one or both ends of the first flow channel 621, thereby achieving the regulation of the flow rate and weight of the heat exchange medium in the heat exchange tube 620.

[0145] It should also be understood that when the thermal management component 60 in this application embodiment is provided with one current collector 610, the thermal management component 60 is provided with a corresponding sealing component 630; or, when the thermal management component 60 in this application embodiment is provided with two current collectors 610, the thermal management component 60 includes sealing components 630 respectively corresponding to the two current collectors 610.

[0146] It should also be understood that, in a plane perpendicular to the Y direction, the shape of the blocking component 630 in this embodiment can be set according to the shape of the cross-section of the first flow channel 621. For example, if the cross-section of the first flow channel 621 is set to a square shape, the shape of the blocking component 630 can also be set to a square shape. It should also be understood that, in a plane perpendicular to the Y direction, the maximum size of the blocking component 630 can be set to be slightly larger than the cross-section of the first flow channel 621, so as to facilitate fixing the blocking component 630 to the inner wall of the first flow channel 621 by an interference fit.

[0147] It should also be understood that the hardness of the material of the sealing component 630 in this embodiment can be set to be less than the hardness of the material of the heat exchange tube 620, so as to reduce the influence of the sealing component 630 on the shape of the inner wall of the first flow channel 621 during the use of the heat management component 60, that is, to reduce the risk of deformation of the first flow channel 621, so as to improve the performance of the heat management component 60.

[0148] In this embodiment, a sealing component 630 is provided in the thermal management component 60, and the sealing component 630 is bonded to the inner wall of the first flow channel 621 near the current collector 610 to seal at least one end of the first flow channel 621 along the first direction. The hardness of the material of the sealing component 630 is less than that of the material of the heat exchange tube 620, so as to reduce the impact of the sealing component 630 on the first flow channel 621 during the use of the thermal management component 60, that is, to reduce the risk of deformation of the first flow channel 621, while improving the sealing performance of the first flow channel 621 of the thermal management component 60 and reducing the weight of the heat exchange medium in the thermal management component 60, so as to balance the heat exchange performance and weight of the thermal management component 60, thereby improving the performance of the thermal management component 60.

[0149] In some implementations, the blocking component 630 is disposed at both ends of the first flow channel 621 along the first direction.

[0150] It should be understood that the sealing component 630 is disposed at both ends of the first flow channel 621 along the first direction. This means that for the same first flow channel 621, the inner wall of the first flow channel 621 may be provided with two sealing components 630, and the two sealing components 630 are respectively bonded to the two end regions of the first flow channel 621 along the first direction near the two collectors 610.

[0151] In this embodiment of the application, by disposing the sealing component 630 at both ends of the first flow channel 621 along the first direction, the impact of the sealing component 630 on the first flow channel 621 can be effectively reduced during the use of the thermal management component 60. That is, the risk of deformation of the first flow channel 621 can be effectively reduced, and the sealing performance of the first flow channel 621 of the thermal management component 60 can be further improved, thereby improving the performance of the thermal management component 60.

[0152] Figure 9 This diagram shows a partially enlarged cross-sectional view of a thermal management component 60 provided in one embodiment of this application.

[0153] In some implementations, such as Figure 9As shown, along the first direction, the minimum dimension D1 between the surface of the sealing member 630 near the collector 610 and the end of the heat exchange tube 620 near the collector 610 satisfies: 0mm < D1 ≤ 2mm.

[0154] For example, along the first direction, the minimum dimension D1 between the surface of the sealing member 630 near the collector 610 and the end of the heat exchange tube 620 near the collector 610 can be set to: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc., or its value is within the range obtained by any combination of the above two values.

[0155] In this embodiment, the minimum dimension D1 between the surface of the sealing component 630 near the current collector 610 and the end of the heat exchange tube 620 near the current collector 610 is set to satisfy: 0mm < D1 ≤ 2mm. This balances the sealing performance of the sealing component 630 to the first flow channel 621 and the assembly performance of the thermal management component 60. It also facilitates the formation of a region for accommodating structural adhesive between the sealing component 630 and the current collector 610, so as to bond the sealing component 630 to the inner wall of the first flow channel 621, thereby improving the performance of the thermal management component 60.

[0156] In some implementations, the surface of the sealing member 630 near the collector 610 is parallel to the surface formed by the end of the heat exchange tube 620 near the collector 610.

[0157] For example, the surface of the sealing member 630 near the collector 610 may be parallel to a plane perpendicular to direction X, and the surface formed by the end of the heat exchange tube 620 near the collector 610 may also be parallel to the plane perpendicular to direction X. It should also be understood that, in the embodiments of this application, the surface formed by the end of the heat exchange tube 620 near the collector 610 may refer to the cross-section formed by the end of the heat exchange tube 620 near the collector 610 in direction Y.

[0158] In this embodiment, by setting the surface of the sealing component 630 near the current collector 610 as parallel to the surface formed by the end of the heat exchange tube 620 near the current collector 610, the sealing performance of the sealing component 630 to the first flow channel 621 and the assembly performance of the thermal management component 60 are effectively balanced. At the same time, it is convenient to form an area for accommodating structural adhesive between the sealing component 630 and the current collector 610, which can effectively bond the sealing component 630 to the inner wall of the first flow channel 621, thereby further improving the performance of the thermal management component 60.

[0159] Figure 10 A schematic diagram of the structure of a sealing component provided in an embodiment of this application is shown.

[0160] In some implementations, such as Figure 9 and Figure 10 As shown, the side of the sealing component 630 away from the current collector 610 is provided in a groove structure 631 with an opening away from the current collector 610.

[0161] It should be understood that the shape of the groove structure 631 provided on the side of the sealing component 630 away from the current collector 610 can be set according to actual needs. For example, the shape of the opening or the bottom wall of the groove structure 631 can be set according to actual needs. For example, the shape of the bottom wall of the groove structure 631 can be matched with the structural shape of the sealing component 630. It should also be understood that the depth of the groove structure 631 can be set according to actual needs. As an example, this application embodiment does not limit this.

[0162] In this embodiment of the application, by providing a groove structure 631 with an opening away from the current collector 610 on the side of the sealing component 630 away from the current collector 610, the weight and assembly performance of the thermal management component 60 are taken into account, while reducing the risk of deformation of the first flow channel 621, thereby improving the performance of the thermal management component 60.

[0163] In some implementations, the sealing component 630 is a hollow structure.

[0164] It should be understood that when the sealing component 630 is configured as a hollow structure, the sealing component 630 can be formed by one of the following processes: compression molding, injection molding, extrusion molding, blow molding, rotational molding.

[0165] In this embodiment, by setting the sealing component 630 as a hollow structure, the weight and assembly performance of the thermal management component 60 can be balanced, while reducing the risk of deformation of the first flow channel 621, improving the product consistency of the sealing component 630, and thus improving the performance of the thermal management component 60.

[0166] In some implementations, the size of the sealing member 630 gradually decreases in the thickness direction of the thermal management member 60 along the first direction and toward the geometric center of the first flow channel 621.

[0167] It should be understood that the gradual decrease in the size of the sealing component 630 in the thickness direction of the thermal management component 60 along the first direction and toward the geometric center of the first flow channel 621 can mean that the size of the sealing component 630 in the thickness direction of the thermal management component 60 can decrease continuously or intermittently.

[0168] In this embodiment, along the first direction and toward the geometric center of the first flow channel 621, the size of the sealing component 630 in the thickness direction of the thermal management component 60 is set to gradually decrease, so as to effectively balance the sealing performance of the sealing component 630 to the first flow channel 621 and the assembly performance of the thermal management component 60, while reducing the weight of the thermal management component 60, thereby improving the performance of the thermal management component 60.

[0169] In some implementations, the material of the sealing component 630 includes at least one of the following: polystyrene-based thermoplastic elastomers, thermoplastic dynamic vulcanized rubber, and ethylene propylene diene monomer (EPDM) rubber. Thus, in this embodiment, by setting the material of the sealing component 630 to include at least one of the following: polystyrene-based thermoplastic elastomers, thermoplastic dynamic vulcanized rubber, and EPDM rubber, the sealing performance of the sealing component 630 on the first flow channel 621 is improved, while effectively reducing the risk of deformation of the first flow channel 621, thereby improving the performance of the thermal management component 60.

[0170] In some implementations, the sealing component 630 has a hardness greater than or equal to 20 and less than or equal to 90 Shore A.

[0171] It should be understood that Shore A in the embodiments of this application may refer to Shore A hardness, which is applicable to hardness testing of elastomers and rubbers.

[0172] Specifically, in testing the hardness of the sealing component 630, the Shore hardness tester first needs to be calibrated to conform to standards (e.g., ISO 7619-1 or ASTM D2240). Then, the Shore hardness tester is mounted on the test bench, and a test sample is prepared. The sample thickness is set to at least 10 mm, and its width and length are each set to 50 mm. The Shore hardness tester is perpendicular to the surface of the test sample, meaning the Shore hardness tester and the thickness direction of the test sample are aligned. The testing environment is set to room temperature (e.g., 25°C). During the test, the test sample is placed stably on the test bench, ensuring the test surface is in contact with the Shore hardness tester. The hardness tester is adjusted to a suitable position, ensuring the indenter is perpendicular to the test sample surface. The test button on the Shore hardness tester is slowly pressed, allowing the indenter to penetrate the sample surface at a uniform indentation speed, avoiding sudden force application. Once the indenter stabilizes, the Shore hardness tester reading is taken, which is the Shore A value. Record the hardness value, mark the test location on the sample, and perform multiple tests (usually at least 5 times) on different locations of the sample. Calculate the average value to improve the accuracy of the results.

[0173] In this embodiment of the application, by setting the hardness of the sealing component 630 to be greater than or equal to 20 and less than or equal to 90 Shore A, the risk of deformation of the first flow channel 621 is effectively reduced, which facilitates the welding connection between the heat exchange tube 620 and the current collector 610, thereby improving the performance of the thermal management component 60.

[0174] According to some embodiments of this application, this application also provides a battery device 10, such as... Figure 3 As shown, the battery device 10 includes a battery cell 20 and a thermal management component 60 in any of the above embodiments, the thermal management component 60 being used to regulate the temperature of the battery cell 20.

[0175] In some implementations, there are multiple thermal management components 60, at least one battery cell 20 is disposed between any two adjacent thermal management components 60, and the multiple thermal management components 60 are interconnected.

[0176] In this embodiment of the application, by setting the number of thermal management components 60 to multiple, and at least one battery cell 20 is provided between any two adjacent thermal management components 60, and the multiple thermal management components 60 are interconnected, the temperature of the battery cell 20 can be effectively regulated by the thermal management components 60, thereby improving the performance of the battery device 10.

[0177] In some implementations, the orthographic projection of the sealing component 630 is located within the orthographic projection of the battery cell 20 on a plane perpendicular to the thickness direction of the heat exchange tube 620.

[0178] In this embodiment, by setting the orthographic projection of the sealing component 630 to be located within the orthographic projection of the battery cell 20 on a plane perpendicular to the thickness direction of the heat exchange tube 620, the sealing component 630 can absorb the deformation of the battery cell 20 during the use of the battery device 10, thereby reducing the risk of thermal runaway of the battery cell 20 and improving the performance of the battery device 10.

[0179] According to some embodiments of this application, this application also provides an electrical device, including the battery device 10 in any of the above embodiments, the battery device 10 being used to provide electrical energy to the electrical device. Specifically, the electrical device can be one of the above-described... Figure 1 The vehicle 1 shown can also be any electrical device that uses the battery device 10.

[0180] The power supply device can be any of the aforementioned devices or systems that utilize battery device 10.

[0181] Based on some embodiments of this application, see again the above. Figures 6 to 10 As shown, a thermal management component 60 is provided, comprising: a current collector 610, a heat exchange tube 620, and a sealing component 630. The current collector 610 is disposed at at least one end of the heat exchange tube 620 along a first direction. The heat exchange tube 620 includes at least one first flow channel 621 and at least one second flow channel 622, which extend through the heat exchange tube 620 along the first direction. The second flow channel 622 communicates with the current collector 610. The sealing component 630 is bonded to the inner wall of the first flow channel 621 near the current collector 610 to seal both ends of the first flow channel 621 along the first direction. The hardness of the material of the sealing component 630 is less than the hardness of the material of the heat exchange tube 620. The first direction is perpendicular to the thickness direction of the heat exchange tube 620. Along the first direction, the minimum dimension D1 between the surface of the sealing member 630 near the collector 610 and the end of the heat exchange tube 620 near the collector 610 satisfies: 0mm < D1 ≤ 2mm. The surface of the sealing member 630 near the collector 610 is parallel to the surface formed by the end of the heat exchange tube near the collector 610. The side of the sealing member 630 away from the collector 610 is provided with a groove structure 631 with an opening away from the collector 610.

[0182] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Multiple battery cells; Multiple thermal management components are provided to regulate the temperature of the individual battery cells. The thermal management component includes: a current collector, a heat exchange tube, and a sealing component. The current collector is disposed at at least one end of the heat exchange tube along a first direction. The heat exchange tube includes at least one first flow channel and at least one second flow channel. The first flow channel and the second flow channel penetrate the heat exchange tube along the first direction. The second flow channel communicates with the current collector. The sealing component is bonded to the inner wall of the first flow channel near the current collector to seal at least one end of the first flow channel along the first direction. The hardness of the material of the sealing component is less than the hardness of the material of the heat exchange tube. The first direction is perpendicular to the thickness direction of the heat exchange tube. The number of thermal management components is multiple, and at least one battery cell is disposed between any two adjacent thermal management components. The multiple thermal management components are interconnected. On a plane perpendicular to the thickness direction of the heat exchange tube, the orthographic projection of the sealing component is located within the orthographic projection of the battery cell.

2. The battery device according to claim 1, characterized in that, The blocking components are disposed at both ends of the first flow channel along the first direction.

3. The battery device according to claim 1, characterized in that, Along the first direction, the minimum dimension D1 between the surface of the sealing component near the collector and the end of the heat exchange tube near the collector satisfies: 0mm < D1 ≤ 2mm.

4. The battery device according to claim 3, characterized in that, The surface of the sealing component near the collector is parallel to the surface formed by the end of the heat exchange tube near the collector.

5. The battery device according to claim 1, characterized in that, The side of the sealing component away from the current collector is provided in a groove structure with an opening away from the current collector.

6. The battery device according to claim 1, characterized in that, The sealing component has a hollow structure.

7. The battery device according to claim 1, characterized in that, Along the first direction and toward the geometric center of the first flow channel, the dimension of the sealing component gradually decreases in the thickness direction of the thermal management component.

8. The battery device according to claim 1, characterized in that, The material of the sealing component includes at least one of the following: polystyrene thermoplastic elastomer, thermoplastic dynamic vulcanized rubber, and EPDM rubber.

9. The battery device according to any one of claims 1 to 8, characterized in that, The hardness of the sealing component is greater than or equal to 20 and less than or equal to 90 Shore A.

10. An electrical device, characterized in that, include: The battery device as claimed in claim 1, wherein the battery device is used to provide electrical energy to the electrical device.

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