Energy storage acid and electrolyte resistant hose

Abstract

The application relates to the technical field of rubber pipes and discloses an energy storage acid-resistant and electrolyte-resistant rubber pipe, which comprises an inner layer, a reinforcing layer and an outer layer. The inner layer is a fluorine rubber layer and continuously extends along the axial direction of the rubber pipe to form a tubular structure for directly contacting acid or electrolyte. The reinforcing layer is a composite structure of aramid web cloth and silicon rubber and is wrapped around the outer circumferential surface of the inner layer. The outer layer is a silicon rubber protective layer and is wrapped around the outer circumferential surface of the reinforcing layer. A sealing and matching section is integrally formed at both ends of the rubber pipe. The technical scheme solves the problems of high hardness, poor flexibility, difficult assembly, unstable interface sealing, high cost of the existing iron fluorine rubber pipe for energy storage equipment, and the problems of insufficient acid and electrolyte resistance, easy swelling and aging, and poor pressure resistance reliability of ordinary rubber pipes.

Description

Technical Field

[0001] This invention relates to the field of hose technology, and more specifically, to energy storage acid-resistant and electrolyte-resistant hoses. Background Technology

[0002] With the widespread application of energy storage devices in new energy, power peak shaving, backup power, and industrial energy supply systems, higher requirements are placed on the safety, media resistance, and ease of assembly of the liquid delivery pipelines inside these devices. Some energy storage devices require the delivery of acids, electrolytes, or corrosive functional liquids through pipelines. These liquids typically have strong chemical reactivity and can easily cause corrosion, swelling, aging, or penetration of ordinary rubber, plastics, or metal materials. Therefore, the delivery pipelines not only need good acid and electrolyte resistance but also stable sealing performance, a certain pressure resistance, and a long service life. In existing energy storage devices, acid or electrolyte delivery pipelines often use Teflon plastic rigid or semi-rigid pipes. While Teflon materials have certain chemical corrosion resistance, they still have significant shortcomings in actual assembly and long-term use. For example, their high hardness and poor flexibility make them difficult to bend in situations with limited internal space and complex pipeline routing. Installation requires numerous pre-bending, positioning, and fixing operations, resulting in longer assembly times and reduced production efficiency.

[0003] Furthermore, when connecting Teflon rigid or semi-rigid tubing to joints, high precision in joint processing, assembly angles, and tightening force are required. If misalignment, stress concentration, or uneven sealing occurs during assembly, unstable sealing at the interface can easily lead to leakage and loosening. Simultaneously, Teflon materials are expensive, and their processing and connection are relatively complex, hindering the large-scale, low-cost manufacturing of energy storage devices. This is especially true in energy storage systems with numerous pipelines and connection points, where material and assembly costs increase significantly. While existing ordinary rubber tubing offers good flexibility, its acid and electrolyte resistance is often insufficient. Prolonged contact with acids or electrolytes can easily lead to internal swelling, stickiness, cracking, precipitation, and aging, potentially causing tubing failure or media contamination, thus failing to meet the long-term reliable operation requirements of energy storage devices.

[0004] Therefore, existing acid and electrolyte delivery pipelines for energy storage devices cannot simultaneously achieve acid and electrolyte resistance, flexibility and ease of assembly, pressure and burst resistance, sealing reliability, and economy. There is an urgent need to provide a composite structure hose to meet the requirements of long-term safe use of energy storage devices. Summary of the Invention

[0005] To overcome the above-mentioned defects, the present invention provides an acid- and electrolyte-resistant rubber hose for energy storage, which solves the problems of high hardness, poor flexibility, difficult assembly, unstable interface sealing, and high cost of existing Teflon pipes used in energy storage equipment, as well as the insufficient acid and electrolyte resistance, easy swelling and aging, and poor pressure resistance reliability of ordinary rubber hoses.

[0006] According to one aspect, at least one embodiment of the present invention provides an energy storage acid-resistant and electrolyte-resistant hose, comprising: The inner layer is a fluororubber layer that extends continuously along the axial direction of the tube to form a tubular structure. The inner wall of the inner layer is vulcanized to form a smooth and dense medium-resistant contact surface for direct contact with acid or electrolyte. A reinforcing layer is wrapped around the outer peripheral surface of the inner layer. The reinforcing layer is a composite structure of aramid mesh and silicone rubber. The aramid mesh is formed into an integrated reinforcing sheet by single-sided calendering of silicone rubber. The reinforcing sheet is wrapped around and attached to the outer wall of the inner layer in the circumferential direction. The inner layer and the reinforcing layer are composite molded and then fitted onto the mandrel. High-temperature vulcanization is used to achieve interlayer chemical cross-linking and bonding, forming an integrated composite tube.

[0007] For example, in the energy storage acid-resistant and electrolyte-resistant hose provided in at least one embodiment of the present invention, the inner layer of fluororubber is a fluororubber compound, which contains an acid-resistant filling system. The acid-resistant filling system includes inert inorganic fillers and acid-resistant plasticizers, so that the inner layer does not swell, permeate, or age in acidic and electrolyte environments.

[0008] For example, in the energy storage acid-resistant and electrolyte hose provided in at least one embodiment of the present invention, the aramid mesh of the reinforcing layer is a meta-aramid fiber woven mesh, the warp and weft threads of the aramid mesh are interwoven to form a grid structure, and silicone rubber fillers are embedded in the mesh of the grid structure, so that the reinforcing layer has both high strength and flexibility.

[0009] For example, the energy storage acid-resistant and electrolyte-resistant hose provided in at least one embodiment of the present invention further includes an outer layer, which is a silicone rubber protective layer covering the outer peripheral surface of the reinforcing layer. The outer layer and the silicone rubber of the reinforcing layer are co-vulcanized to form an integral structure for providing protection against the external environment.

[0010] For example, in the energy storage acid-resistant and electrolyte hose provided in at least one embodiment of the present invention, the outer surface of the outer layer is provided with an anti-slip texture structure, and the anti-slip texture structure is distributed at intervals along the axial direction of the hose to improve the friction force during assembly and clamping.

[0011] For example, in the energy storage acid and electrolyte hose provided in at least one embodiment of the present invention, a transition adhesive layer is provided between the inner layer and the reinforcing layer. The transition adhesive layer is a fluorosilane coupling agent treatment layer, which is used to enhance the interfacial bonding strength between the fluororubber inner layer and the silicone rubber reinforcing layer.

[0012] For example, in the energy storage acid and electrolyte resistant hose provided in at least one embodiment of the present invention, the reinforcing layer is provided as at least two layers, and the weaving direction of the aramid mesh in the adjacent two reinforcing layers is arranged to cross each other to form a multi-directional reinforcing structure, so as to improve the multi-directional pressure resistance and burst resistance of the hose.

[0013] For example, in the energy storage acid and electrolyte hose provided in at least one embodiment of the present invention, the hose has integrally vulcanized sealing sections at both ends. The outer circumferential surface of the sealing section is provided with annular sealing ribs, which are arranged at intervals along the axial direction to form a multi-stage interference seal with the connecting joint.

[0014] According to another aspect, at least one embodiment of the present invention also provides a method for preparing an energy storage acid-resistant and electrolyte-resistant rubber hose, comprising the following steps: Inner layer preparation: Fluororubber compound is extruded into a tubular inner layer preform using an extruder.

[0015] Reinforcing layer preparation: Aramid mesh is subjected to single-sided calendering with silicone rubber to obtain composite reinforced sheet.

[0016] Composite molding: The composite reinforced sheet is wound and wrapped around the outer periphery of the inner layer blank to form a composite tube blank.

[0017] Vulcanization and shaping: The composite tube blank is placed on a metal mandrel and sent into a vulcanization equipment for high-temperature vulcanization, so that the layers can be chemically cross-linked and bonded. After vulcanization, it is demolded and removed to obtain the finished rubber hose.

[0018] For example, prior to composite molding, a surface activation step is included: plasma surface treatment or coating with a fluorosilane coupling agent is applied to the outer wall surface of the inner layer preform to improve the bonding strength between the inner layer and the reinforcing layer. During the vulcanization and setting process, a segmented temperature vulcanization process is adopted, including a pre-vulcanization stage and a complete vulcanization stage. The pre-vulcanization stage initially sets each layer and removes interlayer gases, while the complete vulcanization stage achieves full cross-linking and bonding between the layers. Segmented vulcanization reduces problems such as interlayer bubbles, localized delamination, and inner wall deformation, improving the quality of the hose molding.

[0019] The beneficial effects of the embodiments of the present invention are as follows: 1. In this invention, by using fluororubber as the inner layer that directly contacts the acid or electrolyte, the hose exhibits superior corrosion resistance, permeability resistance, and aging resistance in the acid and electrolyte transport environment of energy storage equipment. Compared to ordinary rubber hoses, it is less prone to problems such as inner wall swelling, cracking, stickiness, or media leakage, thus meeting the long-term stable operation requirements of energy storage equipment. By setting a reinforcing layer formed by aramid mesh and silicone rubber composite around the outer periphery of the inner layer, the hose maintains flexibility and bendability while possessing high pressure resistance, tensile strength, and burst resistance. Compared to Teflon rigid or semi-rigid hoses, the hose of this invention is easier to bend and assemble, adapting to complex internal piping layouts in energy storage equipment and improving installation efficiency.

[0020] 2. In this invention, by calendering aramid mesh onto silicone rubber on one side and wrapping it around the outer layer of fluororubber, combined with high-temperature vulcanization, a stable integrated composite structure is formed between the inner layer and the reinforcing layer. This reduces the risk of interlayer delamination and improves the reliability of the hose under vibration, bending, and pressure fluctuation conditions. By setting a fluorosilane coupling agent treatment layer or performing surface activation treatment on the outer wall of the inner layer, the interfacial bonding effect between fluororubber and silicone rubber is improved, enabling a stronger composite connection between different material systems and thus improving the overall service life of the hose. Simultaneously, by setting a silicone rubber outer layer, an anti-slip textured structure, and an end sealing section, the hose exhibits good adaptability in assembly clamping, external protection, and joint sealing. The multi-level annular sealing ribs at the ends improve the sealing stability between the hose and the joint, reducing the risk of leakage during the operation of energy storage equipment. The hose adopts a composite rubber structure and an aramid reinforcement structure, which has lower material and processing costs compared to Teflon tubing, making it suitable for mass production applications in energy storage equipment. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "composite," "coating," "lamination," and "molding" should be interpreted broadly. For example, they can refer to direct connection or indirect connection through an intermediate layer; they can refer to physical lamination or bonding formed through vulcanization, adhesive bonding, or cross-linking. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0023] In this document, the terms "inner" and "outer" are used to describe the tubing based on its radial direction, with the side closer to the central channel of the tubing being "inner" and the side farther from the central channel being "outer." The terms "first," "second," etc., are used only for descriptive distinction and should not be construed as indicating or implying relative importance.

[0024] Example 1

[0025] This embodiment provides an energy storage acid- and electrolyte resistant hose, including an inner layer and a reinforcing layer.

[0026] The inner layer is a fluororubber layer that extends continuously along the axial direction of the tubing to form a tubular structure. The inner wall of the inner layer constitutes a medium transport channel. During the operation of the energy storage device, acid, electrolyte, or other corrosive functional liquids flow through this medium transport channel, therefore the inner layer directly bears the responsibility of resisting medium corrosion.

[0027] The fluororubber layer, after vulcanization, forms a smooth and dense inner wall surface. This smooth and dense inner wall surface reduces the adhesion and retention of acids or electrolytes when flowing inside the hose, minimizing the continuous erosion of the inner wall by the medium. Simultaneously, fluororubber itself possesses excellent resistance to acids, chemical media, and aging, effectively preventing the swelling, softening, cracking, or aging problems that occur with ordinary rubber in acids or electrolytes.

[0028] A reinforcing layer covers the outer circumferential surface of the inner layer. The reinforcing layer is formed by a composite of aramid mesh and silicone rubber. The aramid mesh is calendered onto silicone rubber on one side to form a composite reinforcing sheet. The composite reinforcing sheet covers the outer circumferential surface of the inner layer, creating a continuous reinforcing structure of the aramid mesh around the outer periphery of the tubing.

[0029] Aramid mesh provides tensile, tear, and burst strength, while silicone rubber fills the pores between the aramid mesh and provides flexible support. Because the aramid mesh and silicone rubber form a composite structure, the reinforcing layer can withstand pressure fluctuations in energy storage pipelines without significantly reducing the hose's bending performance like rigid plastic hoses.

[0030] In the preparation process, a fluororubber inner layer preform is first formed through extrusion. Then, an aramid mesh treated with single-sided calendered silicone rubber is wrapped around the outer circumference of the inner layer preform to form a composite tube preform. Subsequently, the composite tube preform is placed on a mandrel for high-temperature vulcanization and shaping. The mandrel supports the inner layer, ensuring the tube maintains its cavity shape during vulcanization and preventing inner wall collapse or deformation. After high-temperature vulcanization, the inner layer and the reinforcing layer form a stable composite structure, resulting in an energy storage, acid-resistant, and electrolyte-resistant tube.

[0031] Compared to Teflon rigid or semi-rigid tubing, the hose in this embodiment has better flexibility, allowing for bending and arrangement inside the energy storage device, reducing assembly resistance; compared to ordinary rubber hoses, it has better acid and electrolyte resistance, which can improve the safety and reliability of the energy storage device piping system.

[0032] Example 2

[0033] This embodiment further explains the inner layer material and interface bonding structure based on Embodiment 1.

[0034] In this embodiment, the inner layer is made of fluororubber compound. The fluororubber compound contains an acid-resistant filler system, which includes inert inorganic fillers and acid-resistant plasticizers. The inert inorganic fillers are dispersed in the fluororubber matrix, improving the structural density of the inner layer and reducing the channels for acid or electrolyte to penetrate into the inner layer, thereby enhancing its resistance to penetration. The acid-resistant plasticizer improves the processing flowability and flexibility of the fluororubber inner layer, allowing it to maintain good elasticity and integrity even after prolonged contact with acid or electrolyte.

[0035] To improve the bonding strength between the inner layer and the reinforcing layer, this embodiment incorporates a transition adhesive layer between them. This transition adhesive layer is treated with a fluorosilane coupling agent. Since the fluororubber inner layer and the silicone rubber reinforcing layer belong to different rubber systems, direct lamination may result in insufficient interfacial bonding. The fluorosilane coupling agent treatment layer acts as a bridge between the fluororubber surface and the silicone rubber, improving the compatibility and bonding strength between the two materials.

[0036] In the specific preparation process, the outer wall surface of the fluororubber inner layer preform can first undergo surface activation treatment, and then a fluorosilane coupling agent can be coated on it. Surface activation treatment can increase the surface energy of the outer wall surface of the inner layer, making it easier for the coupling agent to adhere evenly. Subsequently, aramid mesh fabric calendered on one side by silicone rubber is wrapped around the outer peripheral surface of the treated inner layer to form a composite tube preform. During the vulcanization process of the composite tube preform, the transition bonding layer can promote the formation of a stronger interfacial bond between the inner layer and the reinforcing layer.

[0037] This embodiment improves the inner layer's resistance to media by using an acid-resistant filling system and enhances the bond strength between the inner layer and the reinforcing layer by using a transition adhesive layer. This effectively reduces the risk of interlayer delamination in the hose under long-term bending, vibration, and pressure fluctuation conditions.

[0038] Example 3

[0039] This embodiment further explains the reinforcing layer, outer layer, and end sealing structure based on Embodiment 1 or Embodiment 2.

[0040] In this embodiment, the aramid mesh of the reinforcing layer is woven from meta-aramid fibers. The warp and weft threads of the aramid mesh interweave to form a grid structure. Silicone rubber enters the mesh openings of the aramid mesh during single-sided calendering, forming an embedded silicone rubber filler. The silicone rubber filler and the aramid fibers form a mechanical interlocking effect, making the reinforcing layer less prone to fiber loosening, local bulging, or interlayer displacement during compression or bending.

[0041] In one embodiment, the reinforcing layer is configured as multiple layers, with the aramid mesh in adjacent reinforcing layers arranged in a cross-directional pattern. This cross-directional arrangement of the aramid mesh forms a multi-directional reinforcing structure, giving the hose good tensile and burst resistance in the circumferential, axial, and oblique directions. When the pressure of the medium within the energy storage device's pipeline fluctuates, the multi-directional reinforcing structure effectively limits the radial expansion of the hose; when the hose is bent during assembly or subjected to external tension, the multi-directional reinforcing structure further improves the hose's tensile and fatigue resistance.

[0042] In this embodiment, the hose also includes an outer layer. The outer layer is a silicone rubber protective layer, covering the outer periphery of the reinforcing layer, and is co-vulcanized with the silicone rubber in the reinforcing layer to form an integral structure. The outer layer provides external protection for the aramid mesh in the reinforcing layer, preventing the aramid mesh from being directly exposed to the external environment and suffering wear, contamination, or mechanical damage. Simultaneously, the silicone rubber outer layer has good flexibility and environmental resistance, which can improve the stability of the hose during long-term use inside the energy storage device.

[0043] The outer surface of the outer layer can be equipped with an anti-slip textured structure. This textured structure is spaced apart along the axial direction of the hose, increasing the friction between the hose's outer surface and the hand, clamp, or fixing component when the assembler holds the hose or uses a clamp to secure it, thus reducing the possibility of hose slippage. This structure is particularly suitable for operating conditions where the internal space of energy storage equipment is narrow and the assembly angle is limited.

[0044] Both ends of the hose are equipped with integrally vulcanized sealing sections. The outer circumference of each sealing section features annular sealing ribs, spaced axially. When the hose end is inserted into or fitted onto a connector in an energy storage device, the annular sealing ribs form a multi-stage interference seal with the inner or outer wall of the connector. This multi-stage sealing structure increases leakage paths and improves the reliability of the seal at the interface. Even if the sealing capacity of one stage decreases due to assembly errors or localized wear, the other sealing ribs can continue to perform their sealing function, thereby reducing the risk of acid or electrolyte leakage.

[0045] This embodiment utilizes a combination of a multi-layered cross-aramid reinforcement structure, a silicone rubber outer protective structure, an anti-slip textured structure, and a multi-level end sealing structure to give the hose good overall performance in terms of pressure resistance, tensile strength, wear resistance, ease of assembly, and interface sealing.

[0046] Example 4

[0047] This embodiment provides a method for preparing an energy storage acid-resistant and electrolyte-resistant rubber hose, which is used to prepare the rubber hose in the above embodiment.

[0048] First, the inner layer is prepared. Fluororubber compound is added to an extrusion machine, and a tubular inner layer preform is formed through extrusion molding. Inert inorganic fillers and acid-resistant plasticizers can be added to the fluororubber compound according to the requirements for acid and electrolyte resistance, so that the inner layer has good density, flexibility, and resistance to media after molding.

[0049] Next, the reinforcing layer is prepared. The aramid mesh is fed into a calendering apparatus, and silicone rubber is calendered on one side of the aramid mesh, forming a composite reinforcing sheet with the silicone rubber. During calendering, the silicone rubber enters the mesh openings of the aramid mesh, forming an intercalation structure with the aramid fibers to improve the integrity of the reinforcing layer and the stability of subsequent composite processes.

[0050] Next, surface activation treatment is performed. The outer wall surface of the inner layer preform is subjected to plasma surface treatment, or a fluorinated silane coupling agent is coated onto the outer wall surface of the inner layer preform. This step improves the interfacial bonding between the outer wall surface of the inner layer and the reinforcing layer, and is particularly suitable for composite bonding between fluororubber and silicone rubber.

[0051] Next, composite molding is performed. The composite reinforcing sheet is wound or wrapped around the outer circumferential surface of the inner layer blank in the circumferential direction, so that the reinforcing layer uniformly covers the outer wall of the inner layer. If higher pressure resistance is required, multiple layers of composite reinforcing sheets can be set, and the aramid mesh in adjacent reinforcing sheets can be oriented in an intersecting direction to form a multi-directional reinforcing structure. Depending on the product requirements, a silicone rubber outer layer can also be wrapped around the outer periphery of the reinforcing layer to form an external protective layer.

[0052] Finally, vulcanization and shaping are carried out. The composite tube blank, after being composite-molded, is placed on a mandrel and sent to a vulcanization device for high-temperature vulcanization. The vulcanization process adopts a segmented heating method, including a pre-vulcanization stage and a complete vulcanization stage. The pre-vulcanization stage is used to initially shape each layer and gradually expel interlayer gases in the composite tube blank, reducing air bubbles and voids; the complete vulcanization stage is used to fully cross-link and bond the inner layer, reinforcing layer, and outer layer to form a structurally stable integrated composite tube. After vulcanization, the tube is removed from the mandrel and the ends are trimmed to obtain the energy storage acid-resistant and electrolyte-resistant tube.

[0053] When an end-sealing section is required, corresponding molding structures can be set at both ends of the composite tube blank, so that the hose end integrally forms an annular sealing rib during vulcanization. Thus, the end-sealing structure and the hose body are vulcanized and molded simultaneously, resulting in high connection strength and resistance to detachment.

[0054] The preparation method of this embodiment enables a stable bond to be formed between the fluororubber inner layer, the aramid silicone rubber reinforcing layer, and the silicone rubber outer layer. The resulting tubing has advantages such as smooth inner wall, stable roundness, strong interlayer bonding, good flexibility, excellent acid and electrolyte resistance, and convenient assembly.

[0055] In summary, the energy storage acid- and electrolyte-resistant hose provided by this invention achieves resistance to media corrosion and impermeability through direct contact between the fluororubber inner layer and the acid or electrolyte. The reinforcing layer formed by the composite of aramid mesh and silicone rubber improves the hose's pressure resistance, burst resistance, and fatigue resistance. High-temperature vulcanization and mandrel shaping ensure the hose's roundness, inner wall quality, and interlayer bonding. The overall reliability, assembly convenience, and interface sealing performance are improved through a transitional adhesive layer, a multi-layered cross-reinforcement structure, a silicone rubber outer layer, and a multi-stage end sealing structure. This hose can replace the commonly used Teflon rigid or semi-rigid hoses in existing energy storage devices, offering advantages such as good flexibility, easy installation, stable acid and electrolyte resistance, low operating costs, and suitability for mass production.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An energy storage acid- and electrolyte-resistant rubber hose, characterized in that, include: The inner layer is a fluororubber layer that extends continuously along the axial direction of the tube to form a tubular structure. The inner wall of the inner layer is vulcanized to form a smooth and dense medium-resistant contact surface for direct contact with acid or electrolyte. A reinforcing layer is wrapped around the outer peripheral surface of the inner layer. The reinforcing layer is a composite structure of aramid mesh and silicone rubber. The aramid mesh is formed into an integrated reinforcing sheet by single-sided calendering of silicone rubber. The reinforcing sheet is wrapped around and attached to the outer wall of the inner layer in the circumferential direction. The inner layer and the reinforcing layer are composite molded and then fitted onto the mandrel. High-temperature vulcanization is used to achieve interlayer chemical cross-linking and bonding, forming an integrated composite tube.

2. The energy storage acid-resistant and electrolyte-resistant hose according to claim 1, characterized in that, The inner layer of fluororubber is a fluororubber compound containing an acid-resistant filler system, which includes inert inorganic fillers and acid-resistant plasticizers, so that the inner layer does not swell, permeate, or age in acidic or electrolyte environments.

3. The energy storage acid-resistant and electrolyte-resistant hose according to claim 1, characterized in that, The reinforcing layer is made of meta-aramid fiber woven mesh. The warp and weft threads of the aramid mesh interweave to form a grid structure. Silicone rubber fillers are embedded in the mesh openings of the grid structure, giving the reinforcing layer both high strength and flexibility.

4. The energy storage acid-resistant and electrolyte-resistant hose according to claim 1, characterized in that, It also includes an outer layer, which is a silicone rubber protective layer that covers the outer peripheral surface of the reinforcing layer. The outer layer and the silicone rubber of the reinforcing layer are co-vulcanized to form an integral structure to provide protection against the external environment.

5. The energy storage acid-resistant and electrolyte-resistant hose according to claim 4, characterized in that, The outer surface of the outer layer is provided with an anti-slip texture structure, which is distributed at intervals along the axial direction of the tubing to improve the friction during assembly and clamping.

6. The energy storage acid-resistant and electrolyte-resistant hose according to claim 1, characterized in that, A transition adhesive layer is provided between the inner layer and the reinforcing layer. The transition adhesive layer is a fluorinated silane coupling agent treatment layer, which is used to enhance the interfacial bonding strength between the fluororubber inner layer and the silicone rubber reinforcing layer.

7. The energy storage acid-resistant and electrolyte-resistant hose according to claim 1, characterized in that, The reinforcing layer consists of at least two layers, with the aramid mesh in adjacent reinforcing layers intersecting each other to form a multi-directional reinforcing structure, thereby improving the multi-directional pressure resistance and burst resistance of the hose.

8. The energy storage acid-resistant and electrolyte-resistant hose according to claim 1, characterized in that, The hose has integrally vulcanized sealing sections at both ends. The outer circumferential surface of the sealing section is provided with annular sealing ribs. The annular sealing ribs are arranged at intervals along the axial direction to form a multi-stage interference seal with the connecting joint.

9. A method for preparing an energy storage acid-resistant and electrolyte-resistant rubber hose as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Inner layer preparation: Fluororubber compound is extruded into a tubular inner layer preform using an extruder; S2. Preparation of reinforcing layer: Aramid mesh is subjected to single-sided calendering with silicone rubber to obtain composite reinforcing sheet; S3. Composite molding: The composite reinforced sheet is wound and wrapped around the outer peripheral surface of the inner layer blank to form a composite tube blank; S4. Vulcanization and shaping: The composite tube blank is placed on a metal mandrel and sent into a vulcanization equipment for high-temperature vulcanization, so that the layers can be chemically cross-linked and bonded. After vulcanization, it is demolded and removed to obtain the finished rubber hose.

10. The preparation method according to claim 9, characterized in that, The surface activation step is included before step S3: The outer wall surface of the inner layer blank is subjected to plasma surface treatment or coated with a fluorinated silane coupling agent to improve the bonding strength between the inner layer and the reinforcing layer. In step S4, the vulcanization adopts a segmented heating vulcanization process, including a pre-vulcanization stage and a complete vulcanization stage. The pre-vulcanization stage allows each layer to be initially shaped and the interlayer gas to be discharged. The complete vulcanization stage achieves full cross-linking and bonding between each layer.