Fluid-containing assemblies

Abstract

A fluid-containing assembly is described, as well as a method for sealing the fluid-containing assembly using an elastic sealing tape.

Description

FLUID-CONTAINING ASSEMBLIESCROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Application Number 63 / 745,944 filed on January 16, 2025; the entire disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION

[0002] The present invention generally relates to fluid-containing assemblies including elastic sealing tape and a method for sealing the fluid-containing assembly using the elastic sealing tape.BACKGROUND OF THE INVENTION

[0003] Fluid-containing assemblies, particularly those used in demanding applications such as electric vehicles, aerospace, and industrial equipment, face significant challenges in maintaining durable and effective seals. These assemblies are often subjected to harsh operational conditions, including thermal cycling, mechanical vibrations, and impact forces, all of which can compromise the integrity of the traditional sealing methods. As a result, leaks or failures in these systems can lead to substantial safety risks, efficiency losses, and costly maintenance procedures.

[0004] Conventional sealing techniques, such as static gaskets or O-rings, are often insufficient in addressing the dynamic nature of these assemblies. For instance, battery packs in electric vehicles undergo thermal expansion and contraction during charge-discharge cycles or mechanical vibrations and physical impacts, which can lead to gaps or misalignments between housing components. Similarly, in aerospace applications, extreme temperature fluctuations and pressure changes exert additional stresses on sealing systems, while industrial applications subject assemblies to mechanical vibrations and physical impacts.

[0005] Further, the increasing demand for compact and lightweight designs in many industries has led to thinner and more flexible housing materials. These materials are more prone to deformation under stress, further challenging the effectiveness of rigid sealing solutions. Another consideration is the chemical compatibility of sealing materials with fluids contained within assemblies, which can include corrosive electrolytes, dielectric coolants, or specialized lubricants. Traditional sealingmaterials oftentimes degrade over time when exposed to these substances, leading to premature failure and potential leakage.

[0006] Furthermore, the assembly and maintenance processes for these fluid-containing systems often require seals that can be easily applied and removed without damaging the housing components. This requirement adds another layer of complexity to providing sealing solution designs.

[0007] Given these challenges, there is a clear need for innovative sealing technologies that can provide at least one of long-term reliability, flexibility, ease of use across a wide range of operating conditions, improved performance and safety of fluid-containing assemblies.SUMMARY OF THE INVENTION

[0008] The invention relates generally to fluid-containing assemblies including elastic sealing tape and a method for sealing the fluid-containing assembly using the elastic sealing tape.

[0009] In one aspect, the invention is directed to a fluid-containing assembly including a housing, a closure, and an elastic sealing tape. The elastic sealing tape attaches at least a portion of the housing to at least a portion of the closure. The elastic sealing tape includes a stretchable film having a first side and a second side, and an adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film. In some embodiments, the elastic sealing tape provides a continuous attachment of the housing to the closure.

[0010] In another aspect, the invention is directed to a method for sealing a fluid-containing assembly. The method includes the step of providing a fluid-containing assembly including a housing, and a closure. An elastic sealing tape is provided to attach at least a portion of the housing and at least a portion of the closure, thereby sealing the fluid-containing assembly. The elastic sealing tape includes a stretchable film having a first side and a second side, and an adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film.

[0011] The summary of the invention is provided as a general introduction to some of the embodiments of the invention, and is not intended to be limiting. Additional example embodiments, including variations and alternative configurations, of the invention are provided herein.BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, serve to explain the principles of the invention. In the drawings:

[0013] FIG. la illustrates an exemplary embodiment of implementing an elastic sealing tape on a fluid-containing assembly according to aspects of the disclosure.

[0014] FIG. lb illustrates an exemplary embodiment of implementing an elastic sealing tape on a fluid-containing assembly according to aspects of the disclosure.

[0015] FIG. 2 illustrates an exemplary embodiment of implementing an elastic sealing tape on a fluid-containing assembly according to aspects of the disclosure.

[0016] FIG. 3a illustrates an exemplary embodiment of implementing an elastic sealing tape on a fluid-containing assembly according to aspects of the disclosure.

[0017] FIG. 3b illustrates an exemplary embodiment of implementing an elastic sealing tape on a fluid-containing assembly according to aspects of the disclosure.

[0018] Fig. 4 illustrates a representative cross-sectional view of the basic structure of a fluidcontaining assembly in accordance to aspects of the disclosure.

[0019] FIG. 5 illustrates a flowchart of a method for sealing a fluid-containing assembly using an elastic sealing tape according to aspects of the disclosure.It will be noted that the fluid-containing assembly and its respective parts in the figures are for illustrative purposes only, and are not drawn to scale.DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTSDefinitions

[0020] As employed above and throughout the disclosure, the following terms, unless otherwise indicated, shall be understood to have the following meanings.

[0021] As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended as open-ended and cover a non-exclusive inclusion. For example, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Also, use of "a" or "an" is employed to describe elements and components described herein. This is done merely for convenience and to give a general sense of thescope of the invention. This description should be read to include "one" or "at least one" and the singular also includes the plural, unless it is obvious that it is meant otherwise by the context. As used herein, the term "about," when referring to a measurable value such as an amount, a temporal duration, and the like, is meant to encompass variations of ±10%, preferably, ±8%, more preferably, ±5%, even more preferably, ±1%, and yet even more preferably, ±0.1% from the specified value, as such variations are appropriate to perform the disclosed methods.

[0022] As used herein, "pressure sensitive adhesive" or "PSA" refers to a material that may be identified by the Dahlquist criterion, which defines a pressure sensitive adhesive as an adhesive having a one second creep compliance of greater than lxlO-6cm2 / dyne as described in Handbook of PSA Technology, Donatas Satas (Ed.), 2ndEdition, page 172, Van Nostrand Reinhold, New York, N.Y., 1989. Since modulus is, to a first approximation, the inverse of creep compliance, pressure sensitive adhesives may also be defined as adhesives having a Young's modulus of less than lxlO6dynes / cm2. Another well-known means of identifying a pressure sensitive adhesive is an adhesive that is aggressively and permanently tacky at room temperature and firmly adheres to a variety of dissimilar surfaces upon mere contact, without the need of more than finger or hand pressure, and which may be removed from smooth surfaces without leaving a residue, as described in Glossary of Terms Used in the Pressure Sensitive Tape Industry provided by the Pressure Sensitive Tape Council, 1996. Another suitable definition of a suitable pressure sensitive adhesive is that it preferably has a room temperature storage modulus within the area defined by the following points as plotted on a graph of modulus versus frequency at 25°C: a range of moduli from about 2xl05to 4xl05dynes / cm2at a frequency of about 0.1 radians / sec (0.017 Hz), and a range of moduli from about 2xl06to 8xl06dynes / cm2at a frequency of approximately 100 radians / sec (17 Hz). See, for example, Handbook of PSA Technology (Donatas Satas, Ed.), 2ndEdition, page 173, Van Nostrand Rheinhold, N.Y., 1989.

[0023] As used herein, the term "structural adhesive" refers to an adhesive that exhibits greater than 1000 psi tensile shear strength as measured by ASTM D1002. Structural adhesives are strong and durable, and they are able to permanently bond components together to create a load-bearing structure.

[0024] As used herein, the term "two-part adhesive" refers to an adhesive that requires two components to be mixed together in a specific ratio to cure. Two-part adhesives typically come in two separate components, such as a resin and a curing agent. The two components are mixed thoroughly to create a chemical reaction that cures the adhesive.

[0025] As used herein, the term "bond strength" refers to the strength of the bond between the adhesive and the surface it's applied to. The bond strength of an adhesive is the maximum force it can withstand per unit area of bonding. It is usually measured by pulling the bond apart and calculating the force needed to do so and generally measured by ASTM D1002. Bond strength can also be defined as the interfacial strength between an adhesive and substrate.

[0026] As used herein, the term "yield strength" refers to the maximum stress level at which the tape transitions from elastic to plastic deformation. Yield strength can be alternatively defined as a material's upper load limit and is measured in Pascals (Pa) or megapascals (MPa). It is the point at which a material begins to break and it permanently deforms.

[0027] As used herein, the term "peel adhesion strength" refers to the force required to detach or "peel" an adhesive material from a substrate (such as a surface to which it is adhered). It is typically measured as the force per unit width of the adhesive bond (e.g., in Newtons per millimeter, N / mm) and generally measured by ASTM D3330. This property is crucial in evaluating the performance of adhesives in applications where bonds need to resist being pulled apart under stress. A higher peel adhesion strength indicates that the adhesive forms a stronger bond with the substrate, making it more resistant to being peeled away.

[0028] As used herein, the term "film" refers to an object that has one dimension (thickness) that is relatively small compared to the other two dimensions (length and width). The surface of a film, defined by its length and width, is also known as the "face", "side" or "surface" of the film (e.g., a first face and second face, a first side and second side, or a first surface and second surface).

[0029] As used herein, the term "acrylic polymer" refers to at least one (meth)acrylate homopolymer or copolymer and may include a blend of different (meth)acrylate polymers and copolymers.

[0030] As used herein, the prefix "(meth)acryl-" refers to both "methacryl-" and "acryl-", such as in "(meth)acrylic" (meaning both methacrylic and acrylic), "(meth)acrylate" (meaning both methacrylate and acrylate), and "(meth)acrylonitrile" (meaning both methacrylonitrile and acrylonitrile). The term "(meth)acrylate" refers to monomeric acrylic or methacrylic esters of alcohols. Acrylate and methacrylate monomers are referred to collectively herein as "(meth)acrylate" monomers. Polymers prepared from (meth)acrylate monomers are referred to as (meth)acrylate polymers.

[0031] As used herein, the term "stretchable" refers to the ability of a material or object to undergo significant deformation, typically in the form of elongation, without breaking or losing its functionality. When a material is described as stretchable, it means that it can stretch or expand when subjected to force. Tensile testing (ASTM D882, ISO 527) is one of the most widely used standard methods to determine stretchability, especially for polymers, elastomers, and flexible materials.

[0032] As used herein, the term "elasticity" refers to the ability of a material to return to its original shape and size after being deformed (stretched, compressed, bent, etc.) when the applied force or stress is removed. Particularly, elasticity is the property of a material that enables it to deform reversibly under stress. If a material is elastic, it will return to its original dimensions after the force is no longer applied, as long as the deformation does not exceed the material's elastic limit or yield strength (the point beyond which permanent deformation occurs). Young's Modulus (Elastic Modulus) is the primary measure of elasticity. It is defined as the ratio of stress to strain in the elastic region (E=Stress / Strain).

[0033] As noted herein-above, fluid-containing assemblies, such as battery packs in electric vehicles, power tools, or other energy storage devices, often require an effective sealing mechanism between housing components to prevent leakage of fluids (e.g., cooling or electrolytic liquids). Effective sealing is critical for the performance, safety, and longevity of these systems. However, traditional sealing methods may not provide sufficient flexibility or durability for certain applications. In the context of sealing fluid-filled containers such as battery packs or otherfluid-containing assemblies, traditional sealing methods often struggle to maintain an effective seal during high-impact scenarios, including but not limited to high temperatures, vibrations, or external pressure fluctuations. In such environments, traditional gaskets and sealants can fail to maintain an airtight or watertight barrier due to their limited elasticity and tendency to crack or deform over time. Conventional gaskets and sealants may fail under extreme conditions, potentially leading to fluid leakage and compromised safety. The present invention addresses as least one of the deficiencies associated with conventional sealing methods.

[0034] In one aspect, the invention is directed to a fluid-containing assembly including a housing, a closure, and an elastic sealing tape. The elastic sealing tape is configured to attach at least a portion of the housing to at least a portion of the closure. In some embodiments of the present invention, the elastic sealing tape includes a stretchable film having a first side and a second side, and an adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film. In someembodiments, the elastic sealing tape of the present invention is configured to provide a continuous attachment of the housing to the seal, thereby avoiding fluid leakage from the fluid-containing assembly.

[0035] In some embodiments, the fluid containing assembly includes a housing; a closure; and an elastic sealing tape, the sealing tape attaching at least a portion of the housing to at least a portion of the closure, wherein the elastic sealing tape comprises: a stretchable film having a first side and a second side; and an adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film.

[0036] The housing and the closure are inter alia key components of the fluid-containing assembly, designed to work together to create a sealed environment for fluids contained in the assembly. The housing is typically the main body of the assembly, configured to hold the fluid and any internal components. It is generally made of a durable, fluid-resistant material such as for example metal (e.g., aluminum, stainless steel), high-strength plastics (e.g., reinforced polymers), or composite materials. The housing is designed with features to accommodate the closure and may include flanges, grooves, or other mating surfaces to ensure a proper seal. The closure is configured for securing to the housing, often serving as a lid or cover of the closure. In some embodiments, it is made of materials similar to the housing. The closure is chosen for its compatibility with the fluid to be contained in the assembly and its ability to maintain a seal under various conditions. The closure may incorporate features such as for example ridges, channels, or recessed areas or combinations thereof that enhance sealing effectiveness. In some embodiments, both the housing and closure are configured to contain a fluid, which could be a liquid coolant, electrolyte solution, lubricant, or other substance relevant to the assembly's function. Their design takes into account factors such as at least one of chemical resistance to the contained fluid; ability to withstand pressure variations; thermal stability across the expected operating temperature range; resistance to mechanical stress and vibration; and compatibility with the elastic sealing tape and any additional sealing components (e.g., gaskets). The housing and closure may also include other features to facilitate the application of the elastic sealing tape, such as smooth, clean surfaces for optimal adhesion. They may have specific geometries or profiles that allow the elastic sealing tape to conform effectively, ensuring a continuous seal around the entire interface between the housing and closure.

[0037] As noted hereinabove, the elastic sealing tape is configured to secure at least a portion of the closure to at least a portion of the housing. In some embodiments, the elastic sealing tape includes a stretchable film and an adhesive disposed on the stretchable film. The adhesive may be disposed on theelastic sealing tape in any suitable manner, so long as it enables the elastic sealing tape to securely attach the closure to the housing. In some embodiments, the adhesive is disposed on at least a portion of at least one of the first side and the second side of the stretchable film. In some embodiments, an adhesive is disposed on at least a portion of the first side of the stretchable film. In some embodiments, an adhesive is disposed on at least a portion of at least one of the second side of the stretchable film. In some embodiments, an adhesive is disposed on at least a portion of the first side and the second side of the stretchable film, resulting in a double-sided tape. In some embodiments, the adhesive on the first side of the stretchable film is the same as the adhesive on the second side of the stretchable film. In some embodiments, the adhesive on the first side of the stretchable film is different from the adhesive on the second side of the stretchable film.

[0038] In accordance with some embodiments of the present invention, the elastic sealing tape is configured for maintaining a seal between the housing and the closure during relative movement between the housing and the closure.

[0039] According to some embodiments of the present invention, the adhesive is disposed on the stretchable film in a continuous manner. In other words, the adhesive is disposed on the full surface of at least one of the first side or the second side of the stretchable film. According to some other embodiments of the present invention, the adhesive is disposed on at least a portion of at least one of the first side and the second side of the stretchable film. According to some other embodiments of the present invention, the adhesive is disposed on at least a portion of at least one of the first side and the second side of the stretchable film, such that at least a portion of at least one of the first side and the second side of the stretchable film is adhesive free. According to the present invention, the adhesive-free portion(s) allow for elastic extension of the stretchable film, thereby maintaining a continuous seal between the housing and the closure. The design of the elastic sealing tape may incorporate a strategic combination of adhesive-coated and adhesive-free areas on the stretchable film, creating a synergistic sealing solution that dynamically responds to the assembly's requirements. The adhesive-free areas enable the film to flex and elongate freely, while the adhesive-coated areas maintain a robust bond where necessary. This carefully engineered configuration ensures that the fluid-containing assembly can maintain its sealing integrity across a wide range of operational conditions. The design strikes an optimal balance between flexibility and adhesive strength to achieve a seal that is both reliable and long-lasting. By allowing controlled stretching while preventing fluid escape, the sealing tape effectively addresses the challenges posed by dynamic environments and varying stresses in fluid-containing assemblies.

[0040] In accordance with some embodiments of the present invention, the bond strength (Fb) of the adhesive is greater than the yield strength (Fys) of the stretchable film of the elastic sealing tape. The balance between the bond strength of the adhesive and the yield strength of the stretchable film in the elastic sealing tape enables a secure and reliable attachment of the fluid-containing assembly, even under challenging or dynamic conditions. The adhesive used in the elastic tape of the fluid-containing assembly may have a bond strength (Fb) that exceeds the yield strength (Fys) of the elastic sealing tape itself. Because of this relationship (Fb > Fys), the force required to break the adhesive bond should be significantly higher than the force needed to stretch the film to its maximum elongation. This design principle allows the elastic sealing tape to utilize its full range of elasticity without risking detachment from the sealed surfaces. As the tape stretches in response to movement or deformation of the assembly, the strong adhesive bond keeps it firmly attached to both the housing and the closure. According to some embodiments, the greater the difference or "delta" between Fb and Fys, the more advantageous the design, as it reduces the risk of the elastic sealing tape de-bonding under stress. This larger gap provides a safety margin, ensuring that the tape will stretch and conform to movements rather than detach from the surfaces it is sealing.

[0041] In accordance with some embodiments of the present invention, the elastic sealing tape has an elongation capability of about 50% to about 100%. In accordance with some embodiments of the present invention, the elastic sealing tape has an elongation capability of about 55% to about 95%, about 60% to about 90%, about 65% to about 85%, or about 70% to about 80%. In some embodiments of the present invention, the lower limit of the elongation capability of the elastic sealing tape is at least 50%, at least 55%, at least 60%, at least 65%, or at least 70%, at least 75%. In some embodiments of the present invention, the upper limit of the elongation capability of the elastic sealing tape is not more than 100%, not more than 95%, not more than 90%, not more than 85%, or not more than 80%. The higher elongation capability of the elastic sealing tape is beneficial to maintaining the continuous seal of the fluid-containing assembly. Tapes with greater elasticity can accommodate more significant movements or deformations in the assembly while maintaining their sealing properties. This elasticity, combined with strong adhesion, allows the tape to effectively contain fluids even when the assembly experiences stress or slight separations between components.

[0042] The elastic sealing tape can have any suitable thickness. In some embodiments, the thickness of the elastic sealing tape can be in the range of 50 pm to 650 pm. In some embodiments, the thickness of the elastic sealing can be in the range of 50 pm to 650 pm, 60 pm to 600 pm, 70 pm to 500pm, 80 pm to 400 pm, 90 pm to 300 pm, or 100 pm to 200 pm. In some embodiments, the elastic sealing tape of the present invention can have a thickness of at least 60 pm, at least 70 pm, or at least 80 pm.

[0043] As noted herein-above, the adhesive bond strength may be significantly higher than the tape's yield strength, allowing for maximum stretch without de-bonding. This characteristic, coupled with high elongation properties, ensures the tape can maintain an effective seal under various conditions, making it particularly suitable for applications like fluid-containing assemblies and battery packs where reliable sealing is critical for safety and performance.

[0044] The stretchable film can be made of any suitable materials. In some embodiments, the stretchable film may be made of a polymer selected from the group of thermoplastic polyurethane, polyolefin blend and cast polypropylene. In some embodiments, the stretchable film can be made up of thermoplastic polyurethane. In some embodiments, the thermoplastic polyurethane can be selected from the group consisting of a polyester-based thermoplastic polyurethanes, polyether-based thermoplastic polyurethanes, polycaprolactone-based thermoplastic polyurethanes, polycarbonate-based thermoplastic polyurethanes, and combinations thereof.

[0045] The adhesive may be any suitable adhesive. In some embodiments, the adhesive may be selected from the group of pressure-sensitive adhesives, pressure-sensitive to structural adhesives, structural adhesives, two-part adhesives, or combinations thereof. In some embodiments, the adhesive may include acrylic-based, rubber-based, epoxy-based, polyurethane-based adhesive, and any combination thereof. In accordance with some embodiments of the present invention, the adhesive is characterized by at least one of a shear strength of greater than 7 mpa and a peel adhesion strength of greater than 1.5 N / mm.

[0046] In those embodiments where the adhesive is a pressure-sensitive to structural adhesive, the pressure-sensitive adhesive may be converted to a structural adhesive by any suitable means. In some embodiments, the pressure-sensitive adhesive is converted to the structural adhesive by application of at least one of UV light and heat. In some embodiments, the pressure-sensitive adhesive is converted to the structural adhesive by exposure to an activator that triggers the conversion. In some embodiments, a composition including an activator may be applied to at least a portion of the surface of the housing or the closure of the fluid-containing assembly prior to attaching the elastic sealing tape. By "activator" is meant herein as a composition that is configured to cause a pressure-sensitive adhesive to convert to a structural adhesive. The activator may be a composition including a single component, or it may includetwo or more components. In some embodiments, the activator may be configured to cure the pressuresensitive adhesive at ambient temperature to achieve high structural strength. In some aspects, this approach may enable the adhesive to attain structural adhesive properties without requiring external energy input such as heat or UV light exposure. In some embodiments, the activator may facilitate curing of the pressure-sensitive adhesive at room temperature, which may allow the elastic sealing tape to be used with temperature-sensitive components of the fluid-containing assembly, such as battery cells, that could otherwise be damaged by elevated curing temperatures. Any suitable activator may be used, such as for example, Loctite 736 primer, Loctite 7380, and Loctite 7387, each of which is commercially available from Henkel Adhesives, located in Germany; Permabond 41 and Permabond 44, each of which is commercially available from Permabond LLC, located in England; and VHB Max Promoter which is commercially available from 3M, located in Minnesota USA. In some embodiments, the activator may be applied to the housing, the closure, or both the housing and the closure of the battery pack. The activator may be applied by any suitable method, including brushing, spraying, dipping, or roll coating.

[0047] In accordance with some embodiments of the present invention, the housing is adapted for containing a fluid. In some embodiments, the fluid is selected from the group consisting of a liquid, gel, gas and combinations thereof. In some embodiments, the housing contains a fluid and a plurality of components submerged in the fluid residing in the housing. In some embodiments, this fluid is a dielectric fluid. In some embodiments, the fluid residing in the housing is a coolant. In some embodiments, the components can be electric vehicle battery cells. In some embodiments, the elastic sealing tape is compatible with the fluid in the fluid-containing assembly. In those embodiments where the elastic sealing tape will be in direct contact with the fluid within the fluid-containing assembly, compatibility with the contained fluid maintains the structural integrity of the elastic sealing tape.

[0048] Figures 1 to 4 illustrate representative examples of the present invention for implementing an elastic sealing tape in a fluid-containing assembly.

[0049] Figure la shows a representative cross-sectional view of a portion of a fluid containing assembly 100a according to some embodiments of the invention, namely a portion of a housing 101a and a portion of a closure 102a. An elastic sealing tape 103a is applied to the exterior 104a of a fluid-containing assembly 100a. The elastic sealing tape 103a includes a stretchable film 107a and an adhesive 105a disposed on the first side 106a of the stretchable film 107a. The adhesive 105a attaches the elastic sealing tape 103a to housing 101a and closure 102a in order to secure the closure 102a to the housing 101a. Asealant and / orgasket 108a is positioned between housing 101a and closure 102a to provide an initial seal. A fastener 109a is used to fasten the housing 101a and the closure 102a. This external application of the elastic sealing tape 103a provides a secondary seal to prevent fluid leakage. The elastic sealing tape 103a accommodates movement between the housing 101a and closure 102a while maintaining the integrity of the seal. The adhesive 105a bonds the elastic sealing tape 103a to both the housing 101a and closure 102a, creating a continuous seal around the perimeter of the assembly. The elastic sealing tape 103a allows the tape to conform to surface irregularities and accommodate dimensional changes that may occur during dynamic conditions.

[0050] Figure lb demonstrates the fluid containing assembly 100a of Figure la shown in a state where the elastic sealing tape 103b is stretched due to a separation or movement of the closure 102b relative to the housing lOlb.This illustrates the tape's ability to stretch and maintain a seal even when there is a slight separation between the housing and the closure during dynamic conditions. The fluidcontaining assembly 100b includes a housing 101b and a closure 102b that is joined together using an elastic sealing tape 103b. The elastic sealing tape 103b includes a stretchable film 107b having a first side 106b. An adhesive 105b is disposed on portions of the stretchable film 107b, while an adhesive-free portion 114b allows for elastic deformation of the sealing tape 103b during operation. A sealant and / or gasket 108b is positioned between the housing 101b and closure 102b. A fastener 109b extends through the components to secure them together. The exterior surface 104b of both the housing 101b and closure 102b provides mounting surfaces for the elastic sealing tape 103b.

[0051] The adhesive-free portion 114b provides controlled deformation / stretchable zones where the elastic sealing tape 103b can stretch without restriction from adhesive bonding. This feature allows the tape to respond dynamically to mechanical stresses while maintaining continuous contact between the housing 101b and closure 102b. This configuration may accommodate thermal expansion, mechanical vibration, or other forces that could otherwise compromise the seal integrity.

[0052] Figure 2 depicts a representative cross-sectional view of a portion of a fluid containing assembly 200, according to some embodiments of the invention. The fluid-containing assembly 200 includes a housing 201 and closure 202 that are sealed together using an elastic sealing tape 203. The elastic sealing tape 203 is positioned on the interior of the assembly, allowing direct contact with the fluid contained within the housing 201. The elastic sealing tape 203 includes a stretchable film 207 having a first side 206 and a second side 211. A first adhesive layer 205 is disposed on the first side 206 to bondwith the housing 201, while a second adhesive layer 212 is disposed on the second side 211 to bond with the closure 202, resulting in a dual adhesive configuration. An adhesive-free portion 210 is provided on the first side 206, which allows the elastic sealing tape 203 to stretch when the closure 202 experiences separation or movement relative to the housing 201. In Figure 2, the fluid containing assembly 200 Is shown in a state where the elastic sealing tape 203 is stretched due to a separation or movement of the closure 202 relative to the housing 201. This illustrates the elastic sealing tape's ability to stretch and maintain a seal even when there is a slight separation between the housing and the closure. A sealant and / or gasket 208 is positioned between the housing 201 and closure 202 to provide primary sealing capability. A fastener 209 secures the housing 201 and closure 202 together from the exterior surface 204 of the assembly.

[0053] In some embodiments, the dual adhesive configuration of the elastic sealing tape 203, may create a robust seal by bonding to both the housing 201 and closure 202. The adhesive-free portion 210 functions as a deformation and / or stretchable zone, allowing the stretchable film 207 to elongate and maintain the seal during dynamic conditions. The sealant and / or gasket 208 and fastener 209 may provide primary fluid containment, while the interior placement of the elastic sealing tape 203 may offer additional mechanical support and sealing redundancy. The combination of these elements may create a reliable sealing system capable of maintaining fluid containment under various operating conditions.

[0054] Figure 3a illustrates a representative cross-sectional view of a portion of a fluid containing assembly 300a, according to some embodiments of the invention, as the assembly 300a is in the process of being assembled. The housing 301a and closure 302a provide a base structure for the assembly. An elastic sealing tape 303a is applied to designated areas of the housing 301a where sealing is required. The elastic sealing tape 303a includes a stretchable film 307a. A first adhesive layer 305a is disposed on a portion of the first side 306a of the elastic sealing tape 303a. The first adhesive layer 305a bonds the elastic sealing tape 303a to the housing 301a, creating an initial seal. The exterior surface 304a of the housing 301a provides a suitable mounting surface for the elastic sealing tape 303a. A closure 302a incorporating a gasket 308a is positioned a distance away from the assembly 300a, in preparation for attachment to the housing 301a. The gasket 308a is configured to provide primary sealing capability between the housing 301a and closure 302a. The assembly demonstrates how the elastic sealing tape 303a can be integrated with traditional sealing elements like the gasket 308a to create a comprehensive sealing system. This combination of sealing technologies may provide enhanced protection against fluid leakage while maintaining ease of assembly.

[0055] Figure 3b illustrates the assembled fluid containing assembly 300b of Figure 3a. The assembled fluid containing assembly 300b has the elastic sealing tape 303b is adhesively attached to the interior of the housing 301b, and an extended portion 313b of the elastic sealing tape 303b extending to seal the exterior 304b of the assembly 300b. The assembly 300b includes a housing 301b and a closure 301b joined together with the elastic sealing tape 303b. The elastic sealing tape 303b includes a stretchable film 307b with a first adhesive layer 305b disposed on its first side 306b and a second adhesive layer 312b disposed on its second side 311b. The first adhesive layer 305b attaches the elastic sealing tape 303b to the housing 301b, and the second adhesive layer 312b attaches the elastic sealing tape 303b to the closure 302b. The dual adhesive configuration enables the tape to bond effectively to both the housing 301b and closure 302b. The extended portion 313b of the elastic sealing tape 303b wraps around a portion of the exterior surface 304b of the assembly 300b, thereby attaching the housing 301b to the closure 302b and sealing the assembly 300b. A gasket 308b is positioned between the housing 301b and closure 301b to provide primary sealing capability. A fastener 309b secures the components together, creating a mechanically stable assembly. The exterior surface 304b provides suitable mounting areas for the extended portion 313b of the elastic sealing tape 303b.

[0056] In some embodiments, the extended portion 313b of the elastic sealing tape 303b provides a secondary seal at the exterior junction of the housing 301b and closure 302b. This configuration may create multiple sealing zones - an interior seal for primary fluid containment and an exterior seal for additional protection against leakage. The combination of interior and exterior sealing provided by the elastic sealing tape 303b, along with the gasket 308b and fastener 309b, may create a robust sealing system. The extended tape configuration may provide enhanced protection against fluid leakage while maintaining the ability to accommodate movement between the housing 301b and closure 302b during dynamic conditions.

[0057] The concepts, as illustrated in Figures 1 to 3, emphasize the high elongation property of the elastic sealing tape, which enables the maintenance of an effective seal, even when assembly components experience movement or separation. This feature is particularly important for fluidcontaining assemblies such as battery packs, where maintaining a reliable seal under various conditions is essential for safety and performance.

[0058] Figure 4 depicts a representative cross-sectional view of the basic structure of a fluidcontaining assembly in accordance with some embodiments of the disclosure. Figure 4 shows a fluid-containing assembly 400, which illustrates the fluid 410 and internal assembly components 411 sealed by an elastic sealing tape 403. The assembly 400 includes a housing 401 and closure 402 that are joined together to create a fluid-containing structure. The elastic sealing tape 403 includes a stretchable film 407 with an adhesive layer 405 disposed on its first side 406. The adhesive layer 405 enables the tape to bond to both the housing 401 and closure 402, creating a continuous seal around the assembly 400. The exterior surface 404 provides suitable mounting areas for the elastic sealing tape 403. A sealant and / or gasket 408 is positioned between the housing 401 and closure 402 to provide primary sealing capability. A fastener 409 secures the components together, creating a mechanically stable assembly that maintains seal integrity during operation.

[0059] In some embodiments, the elastic sealing tape 403 may work in conjunction with the gasket 408 to create multiple sealing zones. While the gasket 408 may provide an initial seal between the housing 401 and closure 402, the elastic sealing tape 403 may provide additional protection against fluid leakage. The basic structure may demonstrate how various sealing elements can be integrated to create a comprehensive sealing system. The combination of the elastic sealing tape 403, gasket 408, and fastener 409 may provide enhanced protection against fluid leakage while maintaining structural integrity of the assembly.

[0060] Figure 5 illustrates a flowchart of a method for sealing a fluid-containing assembly using an elastic sealing tape according to aspects of the disclosure. The method 500 shows a systematic approach for sealing a fluid-containing assembly using an elastic sealing tape. The method may include a step 501 that may involve providing the necessary components of the fluid-containing assembly, including a housing and a closure. This step may include preparing the surfaces of these components to ensure proper adhesion and sealing capability. Step 502 may include providing an elastic sealing tape that includes a stretchable film with appropriate adhesive configurations. The elastic sealing tape may be prepared with adhesive on at least one side of the stretchable film, and may include adhesive-free portions where elastic deformation is desired. Step 503 may encompass the process of attaching the elastic sealing tape to create the sealed assembly. This step may involve applying the elastic sealing tape to designated areas of the housing and closure to establish a fluid-tight seal. The attachment process may include proper positioning and application techniques to ensure optimal sealing performance.

[0061] In some embodiments, the method may allow for systematic assembly while ensuring proper placement and function of all sealing components. The sequential nature of the steps may facilitatequality control and verification of proper sealing at each stage of assembly. The method may provide a repeatable process for creating reliable fluid-containing assemblies using elastic sealing tape.

[0062] The elastic sealing tape of the present invention can be used for any application where there is a need to secure a fluid. The elastic sealing tape is particularly well-suited for use in battery pack assemblies. In some embodiments, the fluid-containing assembly is an electric vehicle battery pack. The elastic sealing tape of the present invention can be used to seal the housing of a large-format lithium-ion battery pack for an electric vehicle. The elastic sealing tape can be applied between the main housing body and the top cover of the battery pack, providing a flexible seal that can accommodate thermal expansion and contraction during charge-discharge cycles. In some embodiments, the elastic sealing tape is resistant to battery fluid chemicals. The elastic sealing tape's chemical resistance ensures compatibility with the electrolyte used in the battery cells.

[0063] In some embodiments, the fluid-containing assembly is an immersion-cooled battery module. The elastic sealing tape of the present invention can be used in a battery module submerged in a dielectric cooling fluid. The elastic sealing tape can be applied to the interface between the module housing and its removable lid. The tape's ability to maintain a seal even when subjected to pressure changes makes it ideal for this application, where the cooling fluid may expand and contract with temperature fluctuations.

[0064] In some embodiments, the fluid-containing assembly is a modular energy storage system. The elastic sealing tape of the present invention can be used in multiple battery modules that are connected to form a larger energy storage system. The elastic sealing tape can be used not only to seal individual modules, but also to provide a flexible joint between modules. This allows for slight movement between components while maintaining the overall system's seal integrity.

[0065] In some embodiments, the fluid-containing assembly is an aerospace battery pack. The elastic sealing tape of the present invention can be used in a high-performance battery pack designed for aerospace applications. The tape's ability to withstand extreme temperature variations and pressure changes makes it suitable for sealing battery packs used in aircraft or spacecraft, where environmental conditions can be particularly challenging.

[0066] In some embodiments, the fluid-containing assembly is a ruggedized portable power bank. The elastic sealing tape of the present invention can be used to seal a compact, high-capacity powerbank designed for outdoor and extreme environments. The tape's impact resistance and flexibility help maintain the power bank's waterproof and dustproof properties, even when subjected to drops or other physical stresses.

[0067] In another aspect, the invention is directed to a method for sealing a fluid-containing assembly. The method includes the step of providing a fluid-containing assembly including a housing, and a closure. An elastic sealing tape is provided including a stretchable film having a first side and a second side, and an adhesive disposed on a portion of at least one of the first side and the second side of the stretchable film. The elastic sealing tape is attached to at least a portion of the housing and at least a portion of the closure, thereby sealing the fluid-containing assembly. The fluid-containing assembly can include a plurality of components submerged in a fluid residing in the housing.

[0068] In some embodiments, the method for sealing the fluid-containing assembly further comprises the step of positioning a plurality of components within the housing. The housing is filled with a fluid to submerge the components. The fluid is then sealed within the housing using the elastic sealing member.

[0069] In accordance with the present invention, the method for sealing a fluid-containing assembly leverages the unique properties of the elastic sealing tape to create a dynamic seal that can withstand the challenges posed by fluid-containing assemblies. The flexibility of the tape allows it to maintain its sealing effectiveness even when the assembly experiences movement, expansion, or contraction, while its strong adhesive properties ensure a secure attachment to both the housing and closure.

[0070] The present elastic sealing tape and method provide an effective, flexible, and durable sealing solution for fluid-containing assemblies such as battery packs.

[0071] Embodiments

[0072] The following embodiments are contemplated along with combinations of their features and combinations of disclosed embodiments.

[0073] Embodiment 1: A fluid-containing assembly, comprising:a housing;a closure; andan elastic sealing tape, the sealing tape attaching at least a portion of the housing to at least a portion of the closure, wherein the elastic sealing tape comprises:a stretchable film having a first side and a second side; andan adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film.

[0074] Embodiment 2: An embodiment of embodiment 1, wherein the elastic sealing tape is configured for maintaining a seal between the housing and the closure during relative movement between the housing and the closure.

[0075] Embodiment 3: An embodiment of embodiment 1, wherein the adhesive is disposed on at least one of the first side and the second side of the stretchable film in a continuous manner.

[0076] Embodiment 4: An embodiment of embodiment 1, wherein the adhesive is disposed on at least a portion of at least one of the first side and the second side of the stretchable film such that at least a portion of at least one of the first side and the second side of the stretchable film is adhesive-free.

[0077] Embodiment 5: An embodiment of embodiment 4, wherein the adhesive-free portions are configured to allow elastic extension of the stretchable film, thereby maintaining a continuous seal between the housing and the closure.

[0078] Embodiment 6: An embodiment of embodiment 1, wherein the adhesive has a bond strength that is greater than a yield strength of the stretchable film.

[0079] Embodiment 7: An embodiment of embodiment 1, wherein the elastic sealing tape provides a continuous attachment of the housing to the closure.

[0080] Embodiment 8: An embodiment of embodiment 1, wherein the elastic sealing tape has a thickness of at least 50 pm.

[0081] Embodiment 9: An embodiment of embodiment 1, wherein the elastic sealing tape is conformable.

[0082] Embodiment 10: An embodiment of embodiment 1, wherein the elastic sealing tape has an elongation of about 60% to about 100%.

[0083] Embodiment 11: An embodiment of embodiment 1, wherein the stretchable film is made of a polymer selected from a thermoplastic polyurethane, polyolefin blend and cast polypropylene.

[0084] Embodiment 12: An embodiment of embodiment 11, wherein the thermoplastic polyurethane is selected from the group consisting of a polyester-based thermoplastic polyurethane, polyether-based thermoplastic polyurethane, polycaprolactone-based thermoplastic polyurethane, polycarbonate-based thermoplastic polyurethane, and combinations thereof.

[0085] Embodiment 13: An embodiment of embodiment 1, wherein the adhesive is selected from the group consisting of a pressure-sensitive adhesive, a pressure-sensitive to structural adhesive, a structural adhesive, a two-part adhesive and combinations thereof.

[0086] Embodiment 14: An embodiment of embodiment 1, wherein the adhesive is selected from acrylic-based adhesive, rubber-based adhesive, epoxy-based adhesive, polyurethane-based adhesive, and combinations thereof.

[0087] Embodiment 15: An embodiment of embodiments 1 - 14, wherein the adhesive is characterized by at least one of:a shear strength of greater than 7 mpa; anda peel adhesion strength of greater than 1.5 N / mm.

[0088] Embodiment 16: An embodiment of embodiment 1, wherein an activator is applied to at least a portion of the surface of the housing or the closure of the fluid-containing assembly prior to attaching the elastic sealing tape.

[0089] Embodiment 17: An embodiment of embodiment 1, wherein the housing is adapted for containing a fluid.

[0090] Embodiment 18: An embodiment of embodiment 17, wherein the housing contains a fluid and a plurality of components submerged in the fluid.

[0091] Embodiment 19: An embodiment of embodiments 17 - 18, wherein the fluid is selected from the group consisting of a liquid, gel, gas and combinations thereof.

[0092] Embodiment 20: An embodiment of embodiments 17 - 19, wherein the fluid is a dielectric fluid.

[0093] Embodiment 21: An embodiment of embodiments 17 - 19, wherein at least a portion of the elastic sealing tape is in direct contact with the fluid within the fluid-containing assembly.

[0094] Embodiment 22: An embodiment of embodiments 1 - 21, wherein the fluid-containing assembly is a battery pack.

[0095] Embodiment 23: A method for sealing a fluid-containing assembly, the method comprising:i. providing an assembly comprising a housing, and a closure;ii. providing an elastic sealing tape comprising a stretchable film having a first side and a second side, and an adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film; andiii. attaching the elastic sealing tape to at least a portion of the housing and at least a portion of the closure, thereby sealing the fluid-containing assembly.

[0096] Embodiment 24: An embodiment of embodiment 23, wherein an activator is applied to at least a portion of the surface of the housing or the closure of the fluid-containing assembly prior to attaching the elastic sealing tape.

[0097] Embodiment 25: An embodiment of embodiment 23, wherein the housing is adapted for containing a fluid.

[0098] Embodiment 26: An embodiment of embodiment 24, wherein the fluid is selected from the group consisting of a liquid, gel, gas and combinations thereof.

[0099] Embodiment 27: An embodiment of embodiment 24, wherein a plurality of components is submerged in the fluid residing in the housing.

[0100] Embodiment 28: An embodiment of embodiment 24, wherein the fluid is a dielectric fluid.

[0101] Embodiment 29: An embodiment of embodiment 24, wherein the elastic sealing tape is configured for maintaining a seal between the housing and the closure during relative movement between the housing and the closure.

[0102] Embodiment 30: An embodiment of embodiment 23, wherein the adhesive has a bond strength that is greater than a yield strength of the stretchable film.

[0103] Embodiment 31: An embodiment of embodiment 23, further comprising: positioning a plurality of components within the housing;filling the housing with a fluid to submerge the components; andsealing the fluid within the housing using the elastic sealing member.

[0104] The features, structures, or characteristics of the invention described throughout this specification may be combined in any suitable manner in one or more aspects. For example, reference throughout this specification to "certain aspects," "some aspects," "some embodiments," certain embodiments," or similar language means that a particular feature, structure, or characteristic described in connection with the aspect is included in at least one aspect of the present invention. Thus, appearances of the phrases "in certain aspects," "in some aspect," "in other aspects," "in certain embodiments," "in some embodiments," "in other embodiments," or similar language throughout this specification do not necessarily all refer to the same group of aspects or embodiments, and the described features, structures, or characteristics may be combined in any suitable manner in one or more aspects or embodiments.

[0105] As described hereinabove, the present subject matter solves many problems associated with previous strategies, systems and / or devices. However, it will be appreciated that various changes in the details, materials and arrangements of components and / or operations, which have been herein described and illustrated in order to explain the nature of the present subject matter, may be made by those skilled in the art without departing from the principle and scope of the claimed subject matter, as expressed in the appended claims.

Claims

CLAIMSWhat is claimed is:

1. A fluid-containing assembly, comprising:a housing;a closure; andan elastic sealing tape, the sealing tape attaching at least a portion of the housing to at least a portion of the closure, wherein the elastic sealing tape comprises:a stretchable film having a first side and a second side; andan adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film.

2. The fluid-containing assembly of claim 1, wherein the elastic sealing tape is configured for maintaining a seal between the housing and the closure during relative movement between the housing and the closure.

3. The fluid-containing assembly of claim 1, wherein the adhesive is disposed on at least one of the first side and the second side of the stretchable film in a continuous manner.

4. The fluid-containing assembly of claim 1, wherein the adhesive is disposed on at least a portion of at least one of the first side and the second side of the stretchable film such that at least a portion of at least one of the first side and the second side of the stretchable film is adhesive-free.

5. The fluid-containing assembly of claim 4, wherein the adhesive-free portions are configured to allow elastic extension of the stretchable film, thereby maintaining a continuous seal between the housing and the closure.

6. The fluid-containing assembly of claim 1, wherein the adhesive has a bond strength that is greater than a yield strength of the stretchable film.

7. The fluid-containing assembly of claim 1, wherein the elastic sealing tape provides a continuous attachment of the housing to the closure.

8. The fluid-containing assembly of claim 1, wherein the elastic sealing tape has a thickness of at least9. The fluid-containing assembly of claim 1, wherein the elastic sealing tape is conformable.

10. The fluid-containing assembly of claim 1, wherein the elastic sealing tape has an elongation of about 60% to about 100%.

11. The fluid-containing assembly of claim 1, wherein the stretchable film is made of a polymer selected from a thermoplastic polyurethane, polyolefin blend and cast polypropylene.

12. The fluid-containing assembly of claim 11, wherein the thermoplastic polyurethane is selected from the group consisting of a polyester-based thermoplastic polyurethane, polyether-based thermoplastic polyurethane, polycaprolactone-based thermoplastic polyurethane, polycarbonate-based thermoplastic polyurethane, and combinations thereof.

13. The fluid-containing assembly of claim 1, wherein the adhesive is selected from the group consisting of a pressure-sensitive adhesive, a pressure-sensitive to structural adhesive, a structural adhesive, a two-part adhesive and combinations thereof.

14. The fluid-containing assembly of claim 1, wherein the adhesive is selected from the group consisting of an acrylic-based adhesive, rubber-based adhesive, epoxy-based adhesive, polyurethane-based adhesive, and combinations thereof.

15. The fluid-containing assembly of any of claims 1-14, wherein the adhesive is characterized by at least one of:i. a shear strength of greater than 7 mpa; andii. a peel adhesion strength of greater than 1.5 N / mm.

16. The fluid-containing assembly of claim 1, wherein an activator is applied to at least a portion of the surface of the housing or the closure of the fluid-containing assembly prior to attaching the elastic sealing tape.

17. The fluid-containing assembly of claim 1, wherein the housing is adapted for containing a fluid.

18. The fluid-containing assembly of claim 17, wherein the housing contains a fluid and a plurality of components submerged in the fluid.

19. The fluid-containing assembly of claims 17 - 18, wherein the fluid is selected from the group consisting of a liquid, gel, gas and combinations thereof.

20. The fluid-containing assembly of any of claims 17 - 19, wherein the fluid is a dielectric fluid.

21. The fluid-containing assembly of any one of claim 17 - 19, wherein at least a portion of the elastic sealing tape is in direct contact with the fluid within the fluid-containing assembly.

22. The fluid-containing assembly of any one of claim 1 - 21, wherein the fluid-containing assembly is a battery pack.

23. A method for sealing a fluid-containing assembly, the method comprising:i. providing an assembly comprising a housing, and a closure;ii. providing an elastic sealing tape comprising a stretchable film having a first side and a second side, and an adhesive disposed on at least a portion of at least one of the first side and the second side of the stretchable film; andiii. attaching the elastic sealing tape to at least a portion of the housing and at least a portion of the closure, thereby sealing the fluid-containing assembly.

24. The method as claimed in claim 23, wherein an activator is applied to at least a portion of the surface of the housing or the closure of the fluid-containing assembly prior to attaching the elastic sealing tape.

25. The method as claimed in claim 23, wherein the housing is adapted for containing a fluid.

26. The method of claim 24, wherein the fluid is selected from the group consisting of a liquid, gel, gas and combinations thereof.

27. The method as claimed in claim 24, wherein a plurality of components is submerged in the fluid residing in the housing.

28. The method as claimed in claim 24, wherein the fluid is a dielectric fluid.

29. The method of claim 24, wherein the elastic sealing tape is configured for maintaining a seal between the housing and the closure during relative movement between the housing and the closure.

30. The method of claim 23, wherein the adhesive has a bond strength that is greater than a yield strength of the stretchable film.

31. The method of claim 23, further comprising:positioning a plurality of components within the housing;filling the housing with a fluid to submerge the components; andsealing the fluid within the housing using the elastic sealing member.

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