Heat shrink tube for energy storage field

Abstract

The utility model discloses a kind of heat shrink tube for energy storage field, including pipe body and its corrugated main pipe wall.The main pipe wall is formed by the first, second surface of interval arrangement, forms the alternate distribution of wave crest and wave trough.The setting of wave crest in convex, wave trough in concave, cooperate parallel and mirror image symmetry surface arrangement, both ensure that stress uniformity, and significantly improve bending resistance.Innovative double-layer winding structure (inner tube+outer tube) can realize at least five kinds of functional state: completely coincident state provides maximum mechanical strength;Completely separated state forms high-efficiency heat insulation cavity;Partially superimposed state realizes the balance of strength and flexibility;Specific overlapping state optimizes stress distribution.The design is innovated through structure, while maintaining wall thickness, so that product has excellent mechanical properties, heat insulation effect and working condition adaptability, especially suitable for the reliability requirement strict energy storage application scene.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink tubing technology, and in particular to a heat shrink tubing for use in the field of energy storage. Background Technology

[0002] Heat shrink tubing is a type of plastic tubing that shrinks when heated. It is widely used in the electronics, electrical, communications, and automotive industries, primarily for insulation, protection, sealing, and marking of wires or components. Heat shrink tubing used in energy storage applications has higher requirements than conventional heat shrink tubing in terms of pressure resistance, insulation, high-temperature resistance, and mechanical protection. Current common solutions include physically thickening the wall of existing heat shrink tubing or optimizing the material. However, physical thickening can easily lead to mechanical fatigue at bends and is unlikely to effectively improve the thermal insulation performance of the heat shrink tubing. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] To address the aforementioned problems, this utility model provides the following technical solution: a heat shrink tubing for energy storage includes a tubing body, wherein the main wall of the tubing body is composed of a first surface and a second surface arranged at intervals, and the main wall has a corrugated structure, forming alternating peaks and troughs.

[0005] Preferably, the wave crests bulge into the tube body, and the wave troughs are recessed into the tube body.

[0006] Preferably, adjacent first surfaces are parallel to each other, and adjacent second surfaces are parallel to each other.

[0007] Preferably, the adjacent first and second surfaces are mirror-symmetrical about an axis.

[0008] Preferably, the tube body is formed into a double-layer structure by winding, wherein:

[0009] The outer layer is the inner tube, and its inner surface forms the inner tube wall;

[0010] The inner layer is the outer tube, and its outer surface forms the outer tube wall.

[0011] Preferably, the tube body has a first overlapping state, in which:

[0012] The troughs of the inner tube wall completely overlap with the troughs of the outer tube wall;

[0013] The first surface of the inner tube wall is completely in contact with the second surface of the outer tube wall.

[0014] Preferably, the tube body has a second overlapping state, in which:

[0015] The troughs of the inner tube wall are completely separated from those of the outer tube wall.

[0016] Preferably, the tube body has a third overlapping state and a fourth overlapping state, in which state:

[0017] The first surface of the inner tube wall partially overlaps with the second surface of the outer tube wall.

[0018] Preferably, the tube body has a fourth overlapping state, in which state:

[0019] The troughs of the inner pipe wall partially overlap with those of the outer pipe wall, and the axes of the inner and outer pipe walls coincide.

[0020] The beneficial effects of this utility model are as follows: by setting a main pipe wall with a corrugated structure, which is composed of a first surface and a second surface arranged alternately to form alternating peaks and troughs, the pipe body can effectively disperse stress through corrugated deformation when under force. The adjacent first surfaces are parallel to each other, and the adjacent second surfaces are parallel to each other. Furthermore, the design of the axis mirror symmetry ensures the uniformity of stress. The structure of the peaks protruding into the pipe body and the troughs recessing into the pipe body significantly improves the bending resistance while ensuring the wall thickness.

[0021] The double-layer structure (inner tube and outer tube) formed by winding achieves multiple overlapping states: First overlapping state: maximum wall thickness, providing the highest mechanical strength; Second overlapping state: forming an air insulation cavity, increasing thermal resistance; Third and fourth overlapping states: balancing strength and flexibility; Fifth overlapping state: optimizing stress distribution. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a perspective view and a cross-sectional view of the tube body in this embodiment.

[0024] Figure 2 This is an example. Figure 1 A three-dimensional view and a sectional view of the rolled-up tube.

[0025] Figure 3 This is a structural diagram showing the various states in this embodiment.

[0026] Figure 4 These are perspective views of different tube shapes in this embodiment.

[0027] In the figure; pipe body 100, inner pipe 100a, outer pipe 100b, main pipe wall 101, axis 102, first surface 101a, second surface 101b, crest 101c, trough 101e;

[0028] Inner tube wall 100a-1, outer tube wall 100b-1, first overlapping state 200, second overlapping state 300, third overlapping state 400, fourth overlapping state 500, fifth overlapping state 600. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0032] Example 1

[0033] Reference Figures 1 to 4 This is an embodiment of the present invention. This embodiment provides a heat shrink tubing for energy storage, including a tubing body 100. The main wall 101 of the tubing body 100 is formed by a first surface 101a and a second surface 101b arranged at intervals. The main wall 101 has a corrugated structure, forming alternating peaks 101c and troughs 101e.

[0034] Specifically, a corrugated main pipe wall 101 (with alternating peaks 101c and troughs 101e) is used to disperse stress through structural deformation, avoiding local stress concentration. Adjacent surfaces are mirror-symmetrical (the first surface 101a and the second surface 101b are symmetrical through axis 102), which makes the stress uniform and significantly reduces the risk of mechanical fatigue during bending. Therefore, compared with traditional thickened pipes, the corrugated structure has improved bending resistance at the same wall thickness, and is especially suitable for wire harness connectors in energy storage battery modules that are frequently bent.

[0035] The corrugated structure naturally forms an air insulation layer (air is trapped in the troughs 101e), which enhances the overall insulation effect by utilizing the low thermal conductivity of air. The corrugations increase the surface creepage distance, preventing high-voltage breakdown and meeting the high insulation requirements of energy storage systems. The tube body 100 can be made of cross-linked polyolefin (XLPE) or PVDF, with a temperature range extended to -40℃ to 150℃, and has flame-retardant properties (UL94 V0 rating).

[0036] The crest 101c protrudes into the tube body 100, and the trough 101e is recessed into the tube body 100, forming periodic concave corrugations. This ensures that when the heat shrink tubing shrinks due to heat, the deformation direction of the crest and trough is in the same direction as the shrinkage force, avoiding the stress disorder caused by traditional outward convex corrugations, thereby improving the uniformity of shrinkage.

[0037] The adjacent first surfaces 101a are parallel to each other, the adjacent second surfaces 101b are parallel to each other, and the adjacent first surfaces 101a and second surfaces 101b are mirror symmetrical through the axis 102. The parallelism ensures that the stress is evenly distributed along the pipe wall when under force, and the mirror symmetry makes the corrugated unit form a closed mechanical loop in the circumferential direction, which significantly improves the compressive strength.

[0038] Example 2

[0039] Reference Figures 2 to 4 This is an embodiment of the present utility model. In this embodiment, the tube body 100 is formed into a double-layer structure by winding, wherein: the outer layer is the inner tube 100a, the inner surface of which constitutes the inner tube wall 100a-1; the inner layer is the outer tube 100b, the outer surface of which constitutes the outer tube wall 100b-1.

[0040] The tube body 100 has a first overlapping state 200, in which state:

[0041] The trough 101e of the inner tube wall 100a-1 completely coincides with the trough 101e of the outer tube wall 100b-1; the first surface 101a of the inner tube wall 100a-1 completely fits the second surface 101b of the outer tube wall 100b-1.

[0042] The tube body 100 has a second overlapping state 300, in which the trough 101e of the inner tube wall 100a-1 is completely separated from the trough 101e of the outer tube wall 100b-1.

[0043] The tube body 100 has a third overlapping state 400 and a fourth overlapping state 500, in which the first surface 101a of the inner tube wall 100a-1 and the second surface 101b of the outer tube wall 100b-1 are partially overlapped.

[0044] The tube body 100 has a fourth overlapping state 500, in which the trough 101e of the inner tube wall 100a-1 partially overlaps with the trough 101e of the outer tube wall 100b-1, and the axes 102 of the inner tube wall 100a-1 and the outer tube wall 100b-1 coincide.

[0045] Specifically, the outer layer (inner tube 100a): its inner surface forms the inner tube wall 100a-1, which has a corrugated structure (crests 101c and troughs 101e).

[0046] Inner layer (outer tube 100b): Its outer surface forms the outer tube wall 100b-1, which also has a corrugated structure, and the corrugation period matches the inner tube wall 100a-1.

[0047] Winding method: The inner and outer layers are fixed by co-extrusion or hot-melt to ensure that the double-layer structure deforms together when heated and shrinks;

[0048] Multiple overlapping states and functions;

[0049]

[0050] It is worth mentioning that the partial overlapping state of the double corrugations (400 / 500) disperses stress during bending, avoiding brittle fracture of the single-layer thickened tube. The air cavity structure of the second overlapping state (300) can achieve efficient heat insulation without increasing the material thickness. The multiple overlapping states allow the same tube to be adapted to different parts of the energy storage system.

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A heat shrink tubing for use in energy storage, characterized in that: The tube includes a tube body (100), the main tube wall (101) of which is composed of a first surface (101a) and a second surface (101b) arranged at intervals. The main tube wall (101) has a corrugated structure, forming alternating peaks (101c) and troughs (101e).

2. The heat shrink tubing for energy storage as described in claim 1, characterized in that: The crest (101c) protrudes into the tube (100), and the trough (101e) is recessed into the tube (100).

3. The heat shrink tubing for energy storage as described in claim 1, characterized in that: The adjacent first surfaces (101a) are parallel to each other, and the adjacent second surfaces (101b) are parallel to each other.

4. The heat shrink tubing for energy storage as described in claim 3, characterized in that: The adjacent first surface (101a) and second surface (101b) are mirror symmetrical through axis (102).

5. The heat shrink tubing for energy storage as described in claim 1, characterized in that: The tube (100) is formed into a double-layer structure by winding, wherein: The outer layer is the inner tube (100a), and its inner surface forms the inner tube wall (100a-1). The inner layer is the outer tube (100b), and its outer surface forms the outer tube wall (100b-1).

6. The heat shrink tubing for energy storage as described in claim 5, characterized in that: The tube body (100) has a first overlapping state (200), in which: The trough (101e) of the inner tube wall (100a-1) completely coincides with the trough (101e) of the outer tube wall (100b-1); The first surface (101a) of the inner tube wall (100a-1) is in complete contact with the second surface (101b) of the outer tube wall (100b-1).

7. The heat shrink tubing for energy storage as described in claim 5, characterized in that: The tube body (100) has a second overlapping state (300), in which: The trough (101e) of the inner tube wall (100a-1) is completely separated from the trough (101e) of the outer tube wall (100b-1).

8. The heat shrink tubing for energy storage as described in claim 5, characterized in that: The tube body (100) has a third overlapping state (400) and a fourth overlapping state (500), in which state: The first surface (101a) of the inner tube wall (100a-1) partially overlaps with the second surface (101b) of the outer tube wall (100b-1).

9. The heat shrink tubing for energy storage as described in claim 5, characterized in that: The tube body (100) has a fourth overlapping state (500), in which: The trough (101e) of the inner tube wall (100a-1) partially overlaps with the trough (101e) of the outer tube wall (100b-1), and the axes (102) of the inner tube wall (100a-1) and the outer tube wall (100b-1) coincide.

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