CN213388496U

CN213388496U - Anti-corrosion adhesive tape for lithium battery

Info

Publication number: CN213388496U
Application number: CN202022245340.4U
Authority: CN
Inventors: 徐觉; 肖艳
Original assignee: Suzhou Juqiang Electronic Technology Co ltd
Current assignee: Suzhou Juqiang Electronic Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-08
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a lithium cell is with anticorrosion sticky tape, include from the type membrane, from the lower terminal surface fixedly connected with waterproof layer of type membrane, the lower terminal surface fixedly connected with diaphragm layer of waterproof layer, the lower terminal surface fixedly connected with heat-resistant layer of diaphragm layer, the lower terminal surface fixedly connected with insulating layer of heat-resistant layer, the lower terminal surface fixedly connected with corrosion-resistant layer of insulating layer. This anticorrosion sticky tape for lithium cell through combining the many-sided good performance from type membrane, waterproof layer, diaphragm layer, heat-resistant layer, insulating layer, corrosion-resistant layer and gluing layer, makes the sticky tape have waterproof, heat-resisting, anticorrosive, insulating, the tensile advantage of dragging, and the stickability is high, makes the practicality of sticky tape stronger, reduces the danger of electric shock, reduces the change speed of sticky tape, reduces use cost. The corrosion-resistant layer of the corrosion-resistant adhesive tape for the lithium battery has good chemical corrosion resistance, oil resistance, wear resistance and adhesive force, and the paint film has good toughness and electrical insulation, so that the adhesive tape is corrosion-resistant when in use.

Description

Anti-corrosion adhesive tape for lithium battery

Technical Field

The utility model relates to a lithium cell sticky tape technical field specifically is a lithium cell is with anticorrosion sticky tape.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, the lithium metal battery is firstly proposed and researched by Gilbert N.Lewis in 1912, and the lithium ion battery is proposed and researched in the 20 th century 70 s by M.S. Whittingham.

Most of the existing adhesive tapes for lithium batteries are poor in corrosion resistance, the heat resistance of the adhesive tapes is not good enough, the lithium batteries can generate a large amount of heat during working, the adhesive tapes are dangerous due to falling of high temperature, the adhesive tapes need to be replaced after being used for a period of time, the use cost is improved, and the possibility of electric shock danger of people is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell is with preventing corrosion sticky tape to propose current most lithium cell in solving above-mentioned background art and use sticky tape, anticorrosive performance is not good, and the heat resistance of sticky tape is not good enough, and the lithium cell can produce a large amount of heats at work, makes the sticky tape drop because of high temperature and causes danger, and the sticky tape needs to be changed after using a period, has improved use cost, increases the dangerous possible problem of people's electric shock.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lithium cell is with anticorrosion sticky tape, includes from the type membrane, from the lower terminal surface fixedly connected with waterproof layer of type membrane, the lower terminal surface fixedly connected with diaphragm layer of waterproof layer, the lower terminal surface fixedly connected with heat-resistant layer of diaphragm layer, the lower terminal surface fixedly connected with insulating layer of heat-resistant layer, the lower terminal surface fixedly connected with corrosion-resistant layer of insulating layer, the lower terminal surface fixedly connected with gluing layer on corrosion-resistant layer.

Preferably, the thickness of the release film is 25-55 μm, and the release film is made of a PET (polyethylene terephthalate) film material.

Preferably, the thickness of the waterproof layer is 10-15 μm, and the waterproof layer is made of mica iron oxide.

Preferably, the thickness of the membrane layer is 15 μm to 25 μm, and the membrane layer is made of spandex.

Preferably, the thickness of the corrosion-resistant layer is 30-42 μm, and the corrosion-resistant layer is made of polyurethane.

Preferably, the thickness of the adhesive layer is 8-12 μm, and the adhesive layer is made of epoxy resin.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the anti-corrosion adhesive tape for the lithium battery has the advantages of water resistance, heat resistance, corrosion resistance, insulation, pulling resistance and high adhesion by combining the excellent performances in multiple aspects of the release film, the waterproof layer, the diaphragm layer, the heat-resistant layer, the insulating layer, the corrosion-resistant layer and the adhesive layer, so that the adhesive tape has stronger practicability, reduces the danger of electric shock, reduces the replacement speed of the adhesive tape and reduces the use cost;

2. the corrosion-resistant layer of the corrosion-resistant adhesive tape for the lithium battery has good chemical corrosion resistance, oil resistance, wear resistance and adhesive force, the toughness and the electrical insulation property of a paint film are good, the adhesive tape is corrosion-resistant when in use, the adhesive layer is made of epoxy resin, contains stable benzene rings, has good acid resistance, alkali resistance and organic solvent resistance, is good in chemical resistance, excellent in electrical insulation property and good in stability, contains polar groups such as hydroxyl groups and ether bonds, enables the resin and adjacent interface molecules to have strong acting force, is strong in binding force, and can be adhered to the lithium battery in a corrosion-resistant and insulating manner.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic view of the three-dimensional structure of the present invention.

In the figure: 1. a release film; 2. a waterproof layer; 3. a separator layer; 4. a heat-resistant layer; 5. an insulating layer; 6. a corrosion-resistant layer; 7. and an adhesive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a lithium cell is with anticorrosion sticky tape, including from type membrane 1, waterproof layer 2, diaphragm layer 3, heat-resistant layer 4, insulating layer 5, corrosion-resistant layer 6 and gluing layer 7, from type membrane 1's lower terminal surface fixedly connected with waterproof layer 2, waterproof layer 2's lower terminal surface fixedly connected with diaphragm layer 3, diaphragm layer 3's lower terminal surface fixedly connected with heat-resistant layer 4, heat-resistant layer 4's lower terminal surface fixedly connected with insulating layer 5, insulating layer 5's lower terminal surface fixedly connected with corrosion-resistant layer 6, corrosion-resistant layer 6's lower terminal surface fixedly connected with gluing layer 7.

Furthermore, the thickness of the release film 1 is 25-55 μm, the release film 1 is made of a PET polyester film, the release film 1 has good voltage resistance and insulation property, fire resistance, excellent mechanical property, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature and low temperature resistance, and good chemical resistance, oil resistance, air tightness and aroma retention property, so that the release film can achieve extremely light and stable release force during stripping, and is used for stripping the release film 1 and the adhesive layer 7 of the adhesive tape, so that the adhesive tape can be effectively protected during transportation and storage.

Furthermore, the thickness of the waterproof layer 2 is 10-15 μm, the waterproof layer 2 is made of mica iron oxide, the waterproof layer 2 is good in water permeability resistance and excellent in antirust performance, the mica iron oxide is used as an antirust filler of an adhesive and a sealant and has a shielding effect, and by mutual overlapping of sheet particles, a diffusion channel of moisture and a corrosive medium is extended and blocked, so that a long-term anticorrosion effect can be provided, the service life of the adhesive tape is prolonged, the replacement rate of the adhesive tape is reduced, and the adhesive tape plays a waterproof and anticorrosion role.

Furthermore, the thickness of the membrane layer 3 is 15-25 μm, the membrane layer 3 is made of spandex, the membrane layer 3 has high resilience, the elongation at break of the membrane layer is greater than 400% and can reach 800% at most, even if the membrane layer is subjected to 300% tensile deformation, the resilience recovery rate is still more than 95%, and the excellent tensile strength and tear strength of the membrane layer 3 enable the adhesive tape to be resistant to pulling and tearing.

Furthermore, the thickness of the corrosion-resistant layer 6 is 30-42 μm, the corrosion-resistant layer 6 is made of polyurethane, the highest heat resistance of the corrosion-resistant layer 6 is 155 ℃, the corrosion-resistant layer has good chemical corrosion resistance, oil resistance, wear resistance and adhesive force, and the paint film has good toughness and electrical insulation, so that the adhesive tape is resistant to high temperature and corrosion when in use.

Furthermore, the thickness of the adhesive layer 7 is 8-12 μm, the adhesive layer 7 is made of epoxy resin, the adhesive layer 7 contains stable benzene rings, and has good acid resistance, alkali resistance and organic solvent resistance, good chemical resistance, excellent electrical insulation property and good stability, and the adhesive layer 7 contains polar groups such as hydroxyl groups and ether bonds, so that the acting force of the resin and adjacent interface molecules is strong, and some of the resin and the adjacent interface molecules can also form chemical bonds, therefore, the adhesive tape has strong adhesive force, and can be adhered to a lithium battery in an anticorrosive and insulating manner.

The working principle is as follows: firstly, finding a cutting position along the edge of an adhesive tape for tearing, wherein the release film 1 is a PET (polyethylene terephthalate) polyester film, the release film 1 has good voltage-resistant insulating property, fire resistance, excellent mechanical property, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature and low temperature resistance, chemical resistance, oil resistance, air tightness and fragrance retention, and can be effectively protected in the transportation and storage processes, so that the adhesive tape can achieve extremely light and stable release force during peeling, and is used for peeling the adhesive tape release film 1 and an adhesive layer 7, the lower end surface of the release film 1 is fixedly connected with a waterproof layer 2, the waterproof layer 2 is made of mica iron oxide, the waterproof layer 2 has good water permeability resistance and excellent rust resistance, the mica iron oxide is used as an antirust filler of an adhesive and a sealant, has a shielding effect, and a moisture and corrosive medium diffusion channel can be extended and blocked by mutual overlapping of sheet particles, the anti-corrosion adhesive tape can provide long-term anti-corrosion effect, the service life of the adhesive tape is prolonged, the replacement rate of the adhesive tape is reduced, the adhesive tape plays a role in water resistance and corrosion resistance, the diaphragm layer 3 is made of spandex and has high resilience, the elongation at break of the diaphragm layer is more than 400 percent and can reach 800 percent at most, even when the tensile deformation is 300 percent, the resilience recovery rate is still more than 95 percent, the excellent tensile strength and the tear strength of the diaphragm layer 3 enable the adhesive tape to be resistant to pulling and tearing, the adhesive tape is not easy to break in the pasting process, the heat-resistant layer 4 is made of polypropylene resin and has excellent mechanical property and heat-resistant property, the use temperature range is-30-140 ℃, the adhesive tape has excellent electrical insulating property and chemical stability, is not hydroscopic and does not act when being contacted with most chemicals, the adhesive tape also achieves the effect of protection and insulation under the, the adhesive tape has excellent physical and chemical properties such as fire resistance, acid resistance, insulativity, high melting point, chemical inactivity, good covering power, softness, strong adsorption power and the like, so that the insulativity of the adhesive tape is further improved, the corrosion-resistant layer 6 is made of polyurethane, the highest heat resistance of the corrosion-resistant layer 6 is 155 ℃, the adhesive tape has good chemical corrosion resistance, oil resistance, wear resistance and adhesive force, the toughness and the electrical insulativity of a paint film are good, so that the adhesive tape is resistant to high temperature and corrosion in use, the adhesive layer 7 is made of epoxy resin and contains stable benzene rings, the adhesive layer has good performances of acid resistance, alkali resistance and organic solvent resistance, good chemical resistance, excellent electrical insulativity and good stability, the adhesive layer 7 contains polar groups such as hydroxyl, ether bonds and the like, so that the acting force of the resin and adjacent interface molecules is strong, some can also form chemical bonds, therefore, the adhesive force of the adhesive tape can be adhered to a lithium battery in an anticorrosion and, through combining the many-sided excellent performance from type membrane 1, waterproof layer 2, diaphragm layer 3, heat-resistant layer 4, insulating layer 5, corrosion-resistant layer 6 and gluing layer 7, make the sticky tape have waterproof, heat-resisting, anticorrosive, insulating, the tensile advantage of dragging, the stickability is high, makes the practicality of sticky tape stronger.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a lithium cell is with anti-corrosion sticky tape, includes from type membrane (1), its characterized in that: the waterproof membrane is characterized in that a waterproof layer (2) is fixedly connected to the lower end face of the release membrane (1), a diaphragm layer (3) is fixedly connected to the lower end face of the waterproof layer (2), a heat-resistant layer (4) is fixedly connected to the lower end face of the diaphragm layer (3), an insulating layer (5) is fixedly connected to the lower end face of the heat-resistant layer (4), a corrosion-resistant layer (6) is fixedly connected to the lower end face of the insulating layer (5), and an adhesive layer (7) is fixedly connected to the lower end face of the corrosion-resistant layer (6).

2. The anti-corrosion adhesive tape for a lithium battery according to claim 1, characterized in that: the thickness of the release film (1) is 25-55 microns, and the release film (1) is a PET polyester film.

3. The anti-corrosion adhesive tape for a lithium battery according to claim 1, characterized in that: the thickness of the waterproof layer (2) is 10-15 microns, and the waterproof layer (2) is made of mica iron oxide.

4. The anti-corrosion adhesive tape for a lithium battery according to claim 1, characterized in that: the thickness of the membrane layer (3) is 15-25 mu m, and the membrane layer (3) is made of spandex.

5. The anti-corrosion adhesive tape for a lithium battery according to claim 1, characterized in that: the thickness of the corrosion-resistant layer (6) is 30-42 microns, and the corrosion-resistant layer (6) is made of polyurethane.

6. The anti-corrosion adhesive tape for a lithium battery according to claim 1, characterized in that: the thickness of the adhesive layer (7) is 8-12 μm, and the adhesive layer (7) is made of epoxy resin.