Blue film adhesive tape for power battery cell
By using blue film tape for power battery cells composed of high-strength heat conduction first tape and elastic buffering second tape, the shortcomings of blue film tape for power battery cells in the prior art in terms of protection and fixation protection are solved, and the full protection of the battery cells is achieved, and the safety and stability of the battery cells are improved.
Patent Information
- Application Number
- CN202421417572.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing blue film tape for power battery cells has shortcomings in protection and fixation protection, and it is difficult to effectively prevent damage to the battery cells by vibration and severe external forces.
The blue film tape for power battery cells composed of the first tape and the second tape is used. The first tape has high strength and thermal conductivity. The second tape has an elastic buffer layer. It is used in partition on the battery cells through a combination of the two to provide all-round protection.
It realizes multi-faceted protection of power battery cells, including waterproof, oilproof, gas penetration, heat conduction and shock absorption, improving the safety and stability of the battery cells, making it convenient to distinguish between high-quality and ordinary battery cells.
Smart Images
Figure CN222893128U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of adhesive tapes, in particular to a blue film adhesive tape for a power battery cell. Background Art
[0002] With the rapid development of the new energy vehicle industry, the safety and stability of power batteries as its core components are increasingly valued. As the basic unit of power batteries, the packaging and protection of batteries are particularly important. Blue film tape is mainly used for wrapping various types of power battery cells, playing the role of insulation and fixed protection. At the same time, it can also play important roles such as waterproof, oil-proof and gas-proof. Therefore, some upgrades and improvements to blue film tape are of great help to the development of power battery cells. Utility Model Content
[0003] The utility model aims to provide a novel blue film tape for power battery cells.
[0004] To achieve the above purpose, the solution adopted by the utility model is as follows:
[0005] A blue film tape for a power battery cell, comprising a first tape and a second tape, wherein the first tape is wider than the second tape, and the second tape is thicker than the first tape, and the two tapes are wound on two independent reels;
[0006] The first adhesive tape comprises an inner film layer, an intermediate reinforcement layer and an outer film layer which are closely attached in sequence, and the intermediate reinforcement layer comprises mesh wires and a heat conductive sheet embedded in the mesh wires;
[0007] The second adhesive tape comprises an inner film layer, a middle buffer layer and an outer film layer which are closely attached in sequence, and the middle buffer layer is elastic and compressible.
[0008] Furthermore, the mesh wire is in the shape of a mesh composed of fiber wires, wherein the mesh holes are in the shape of a parallelogram, the thermal conductive sheet is evenly arranged in the mesh holes, the thickness of the thermal conductive sheet does not exceed the thickness of the mesh wire, and the thermal conductive sheet is thermal grease or thermal conductive gel.
[0009] Furthermore, the middle buffer layer is a transparent soft glue with a thickness of ≥1.5 mm.
[0010] Furthermore, the first tape and the second tape are coated with adhesive liquid on one side facing the reel.
[0011] Furthermore, the inner film layer is a transparent PET film, and the outer film layer is a blue PET film.
[0012] Furthermore, the outer membrane layer is in the shape of alternating dark blue stripes and light blue stripes.
[0013] Furthermore, a heat conducting sheet is arranged in each grid hole.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] The utility model discloses a blue film tape for a power battery cell, which is easy to use and is provided with a first tape and a second tape. The tape is used in partitions on the power battery cell, and the side and the bottom can be wrapped in place. The first tape has high strength and good thermal conductivity, and protects the side of the power battery cell; the second tape uses its own elasticity to provide a buffering and shock absorbing function, and ensures the safety of the battery cell and prevents damage due to severe vibration; in addition, the blue film tape for a power battery cell of the present invention has high recognition, is used for the packaging of high-quality cells, and is convenient to distinguish from ordinary cells packaged with ordinary blue film tapes. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;
[0018] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;
[0019] Figure 4 This is a schematic diagram of the structure of the intermediate strengthening layer of the utility model;
[0020] Figure 5 It is a schematic diagram of the usage of the utility model.
[0021] In the figure: 1, first adhesive tape; 1a, middle reinforcement layer; 1a-1, mesh wire; 1a-2, heat conductive sheet; 2, second adhesive tape; 2a, middle buffer layer; 3, reel. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0023] like Figure 1 to Figure 5 As shown, a blue film tape for a power battery cell includes a first tape 1 and a second tape 2. The width of the first tape 1 is greater than that of the second tape 2, and the thickness of the second tape 2 is greater than that of the first tape 1. The first tape 1 and the second tape 2 are wound on two independent reels 3. The first tape 1 and the second tape 2 are coated with adhesive liquid on one side facing the reel 3. When in use, the first tape 1 and the second tape 2 are released from the reel 3 and can be used to wrap the power battery cell. The wrapping areas of the first tape 1 and the second tape 2 have both overlapping parts and non-overlapping parts.
[0024] Specifically, the first adhesive tape 1 includes an inner film layer, an intermediate reinforcement layer 1a and an outer film layer which are tightly fitted in sequence, the intermediate reinforcement layer 1a includes a mesh wire 1a-1 and a heat conductive sheet 1a-2 embedded in the mesh wire 1a-1; the mesh wire 1a-1 is a mesh composed of fiber wires, the fiber wires have high tensile strength, and its strong fiber base material enables it to withstand large tensile forces, wherein the mesh holes are in the shape of a parallelogram, the heat conductive sheets 1a-2 are evenly arranged in the mesh holes, and each mesh hole is provided with a heat conductive sheet 1a-2, the thickness of the heat conductive sheet 1a-2 does not exceed the thickness of the mesh wire 1a-1, the heat conductive sheet 1a-2 is a thermal conductive silicone grease or a thermal conductive gel, and its thermal conductivity coefficient is ≥3.0W / mK, the heat conductive sheet 1a-2 effectively improves the performance of heat dissipation of the battery core to the outside and does not interfere with the mesh wire 1a-1, making full use of the mesh space; the first adhesive tape 1 formed by the above technical scheme is used for wrapping packaging such as Figure 5 The side of the power battery cell shown is protected, and has insulation, waterproof, dustproof, puncture-proof and other functions. The more layers of wrapping, the stronger the puncture-proof performance.
[0025] On the other hand, the second tape 2 specifically includes an inner film layer, an intermediate buffer layer 2a and an outer film layer which are closely attached in sequence, wherein the intermediate buffer layer 2a is a transparent soft glue with a thickness of ≥1.5 mm and has elastic compressible properties. The second tape 2 formed by the above technical solution is used for wrapping packaging such as Figure 5 The bottom and side surfaces of the power battery cell shown (the second adhesive tape 2 on the side surface is located within the first adhesive tape 1) not only have the functions of insulation, waterproof and dustproof, but also provide buffering and shock absorption functions by using their own elasticity. When external force acts on the middle buffer layer 2a, it will be compressed or stretched. In this process, the energy is converted into elastic deformation energy, thereby reducing the vibration amplitude of the structure, ensuring the safe use of the battery cell and preventing damage due to severe vibration.
[0026] Furthermore, the inner film layer is a transparent PET film, and the outer film layer is a blue PET film. The outer film layer has alternating dark blue stripes and light blue stripes, which improves the recognition of the blue film tape for power battery cells in this scheme and is used for the packaging of high-quality battery cells, thereby making it easy to distinguish them from ordinary battery cells packaged with ordinary blue film tape.
[0027] The above is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, changes, modifications or additions are all covered within the protection scope of the present invention.
Claims
1. A blue film tape for a power battery cell, characterized in that: It comprises a first adhesive tape (1) and a second adhesive tape (2), wherein the width of the first adhesive tape (1) is greater than that of the second adhesive tape (2), and the thickness of the second adhesive tape (2) is greater than that of the first adhesive tape (1), and the two are wound on two independent reels (3); The first adhesive tape (1) comprises an inner film layer, an intermediate reinforcement layer (1a) and an outer film layer which are tightly attached in sequence, and the intermediate reinforcement layer (1a) comprises mesh wires (1a-1) and a heat conductive sheet (1a-2) embedded in the mesh wires (1a-1); The second adhesive tape (2) comprises an inner film layer, an intermediate buffer layer (2a) and an outer film layer which are tightly fitted in sequence, and the intermediate buffer layer (2a) is elastic and compressible.
2. The blue film tape for a power battery cell according to claim 1, characterized in that: The mesh wire (1a-1) is in the shape of a mesh composed of fiber wires, wherein the mesh holes are in the shape of a parallelogram, the heat conducting sheet (1a-2) is evenly arranged in the mesh holes, the thickness of the heat conducting sheet (1a-2) does not exceed the thickness of the mesh wire (1a-1), and the heat conducting sheet (1a-2) is heat conducting silicone grease or heat conducting gel.
3. The blue film tape for a power battery cell according to claim 1, characterized in that: The middle buffer layer (2a) is a transparent soft glue with a thickness of ≥1.5 mm.
4. The blue film tape for a power battery cell according to claim 1, characterized in that: The first adhesive tape (1) and the second adhesive tape (2) are coated with adhesive liquid on one side facing the reel (3).
5. The blue film tape for a power battery cell according to claim 1, characterized in that: The inner film layer is a transparent PET film, and the outer film layer is a blue PET film.
6. The blue film tape for a power battery cell according to claim 5, characterized in that: The outer membrane layer is in the shape of alternating dark blue stripes and light blue stripes.
7. The blue film tape for a power battery cell according to claim 2, characterized in that: A heat conducting sheet (1a-2) is arranged in each grid hole.