CN208489275U

CN208489275U - A kind of ultra-thin lithium cell tab

Info

Publication number: CN208489275U
Application number: CN201821068817.2U
Authority: CN
Inventors: 杨维元
Original assignee: Huizhou Searle Amperex Technology Ltd
Current assignee: Feng Leihua
Priority date: 2018-07-06
Filing date: 2018-07-06
Publication date: 2019-02-12
Anticipated expiration: 2028-07-06

Abstract

The utility model discloses a kind of ultra-thin lithium cell tabs, including packaging film (1), positive (2), positive pole ear (21), cathode (3), negative lug (31) and membrane layer (4), the membrane layer to be arranged between the anode and cathode；The packaging film package anode and cathode；The anode is connected with the positive pole ear, and the cathode is connected with the negative lug, the positive pole ear and the exposed outside in the packaging film of the negative lug；It is equipped with tab process layer (5) on the surface of the positive pole ear (21) and negative lug (31), the tab process layer (5) is plasmasphere or corona layer；On the one hand ultra-thin tab head can be made to be easier to be bonded, adsorb conductive material, on the other hand can also guarantee safety and stability, moreover, because structure design is simple, additionally it is possible to greatly improve the manufacture efficiency of manufacturer.

Description

A kind of ultra-thin lithium cell tab

Technical field

The utility model relates to lithium battery manufacturing fields, and in particular to a kind of ultra-thin lithium cell tab.

Background technique

With the continuous development of electronic products, the equipment of miniaturization is increasing, and promotes people to the electricity in electronic product Pond requires higher and higher.Wherein, lithium battery is because superior performance is widely used in various electronic.But existing lithium Connection between the tab and electronic equipment of battery is always industry problems.Connection side between traditional tab and electronic equipment Formula is using welding, and still, the mode of welding will increase the thickness of battery, be unfavorable for the ultrathin of electronic equipment.

Utility model content

The technical issues of the utility model solves is to provide a kind of ultra-thin lithium cell tab, on the one hand can make ultra-thin tab Head is easier to be bonded, adsorb conductive material, on the other hand can also guarantee safety and stability, moreover, because structure is set Meter is simple, additionally it is possible to greatly improve the manufacture efficiency of manufacturer.

In order to solve the above technical problems, the technical solution of the utility model is: a kind of ultra-thin lithium cell tab, including packaging Film, anode, positive pole ear, cathode, negative lug and membrane layer, the membrane layer be arranged in the described anode and cathode it Between, the packaging film package anode and cathode, the anode are connected with the positive pole ear, the cathode It is connected with the negative lug, the positive pole ear and the negative lug are exposed in the outer of the packaging film Side is equipped with tab process layer on the surface of the positive pole ear and negative lug, and the tab process layer is plasma Layer or corona layer.

Preferably, the anode includes positive bearing bed and positive coating layer, and the positive coating layer is coated on institute The two sides for the positive bearing bed stated.

Preferably, the cathode includes cathode bearing bed and cathode coating layer, and the cathode coating layer is coated on institute The two sides for the cathode bearing bed stated.

Preferably, the packaging film is aluminum plastic film.

Preferably, the membrane layer is PP film or PE film.

It is of the utility model that the utility model has the advantages that ultra-thin tab head on the one hand can be made, more easily bonding, absorption are conductive On the other hand material can also guarantee safety and stability, moreover, because structure design is simple, additionally it is possible to greatly improve life The manufacture efficiency of business men.

Detailed description of the invention

Fig. 1 is the sectional view of the utility model.

The title or process name for the corresponding component that number or letter in figure represent: 1. packaging films, 2. anodes, 21. just Pole bearing bed, 22. positive pole ears, 23. positive coating layers, 3. cathode, 31. cathode bearing beds, 32. negative lugs, 33. cathode apply Layer of cloth, 4. membrane layers, 5. tab process layers.

The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art, The omitting of some known structures and their instructions in the attached drawings are understandable；The same or similar label corresponds to same or similar Component；The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent.

Specific embodiment

In order to facilitate the understanding of those skilled in the art, below in conjunction with attached drawing and embodiment to the utility model carry out into One step detailed description.

A kind of ultra-thin lithium cell tab, including packaging film 1, anode 2, positive pole ear 21, cathode 3, negative lug 31 and every Film layer 4, membrane layer are arranged between a positive electrode and a negative electrode, and packaging film package anode and cathode, anode are connected with positive pole ear, cathode It is connected with negative lug, positive pole ear and the exposed outside in packaging film of negative lug, in positive pole ear 21 and negative lug 31 surface is equipped with tab process layer 5, and tab process layer 5 is plasmasphere or corona layer.

Specifically, anode 2 includes positive bearing bed 22 and positive coating layer 23, positive coating layer is coated on positive bearing bed Two sides.Positive coating layer 23 is mixed by positive electrode, solvent and electrolyte material.Positive electrode includes but is not limited to cobalt Sour lithium, LiMn2O4, LiFePO4, ternary material, conductive agent, graphene, carbon nanotube, polymer glue powder；Solvent: including but not Be limited to deionized water, NMP(N-methyl pyrrolidones), acetone, PS, EC；Electrolyte material: including but not limited to DMC, EMC, DEC, PVDF, CMC, γ-fourth lactones, lithium hexafluoro phosphate, bis trifluoromethyl Huang imide li, silica, ceramic powder.

Specifically, cathode 3 includes cathode bearing bed 32 and cathode coating layer 33, cathode coating layer is coated on cathode bearing bed Two sides.Cathode coating layer 33 is mixed by negative electrode material, solvent and electrolyte material.Negative electrode material: include but is not limited to Artificial graphite, natural graphite, silicon-carbon cathode, conductive agent, graphene, carbon nanotube, polymer glue powder；Solvent: including but it is unlimited In deionized water, NMP(N-methyl pyrrolidones), acetone；Electrolyte material: including but is not limited to DMC, EMC, DEC solvent.

Specifically, packaging film 1, positive bearing bed 22 and cathode bearing bed 32 are collector, material is metal material, conventional Positive bearing bed uses aluminium, and cathode bearing bed is copper.

Specifically, membrane layer 4 is PP film or PE film.Membrane layer can also be PP or PE MULTILAYER COMPOSITE layer.

Embodiment one

Ultra-thin lithium cell tab above-mentioned is combined into specific way in reality, does corresponding elaboration, it is specific as follows: ultra-thin Lithium battery pole ear, including packaging film 1, anode 2, positive pole ear 21, cathode 3, negative lug 31 and membrane layer 4, membrane layer setting Between a positive electrode and a negative electrode, packaging film package anode and cathode, anode are connected with positive pole ear, and cathode is connected with negative lug, Positive pole ear and the exposed outside in packaging film of negative lug, are equipped with pole on the surface of positive pole ear 21 and negative lug 31 Ear process layer 5, tab process layer 5 are corona layer.The present embodiment is using corona, corona discharge power 800w, when sided corona treatment Between be 5 seconds.

Specifically, anode 2 includes positive bearing bed 22 and positive coating layer 23, positive coating layer is coated on positive bearing bed Two sides.Positive coating layer 23 is mixed by positive electrode, solvent and electrolyte material.Positive electrode includes but is not limited to cobalt Sour lithium, LiMn2O4, LiFePO4, ternary material, conductive agent, graphene, carbon nanotube, polymer glue powder；Solvent: including but not Be limited to deionized water, NMP(N-methyl pyrrolidones), acetone；Electrolyte material: including but is not limited to DMC, EMC, DEC solvent.

Specifically, packaging film 1 is aluminum plastic film, positive bearing bed 22 and cathode bearing bed 32 are collector, and material is metal Material, conventional cathode bearing bed use aluminium, and cathode bearing bed is copper.

Specifically, membrane layer 4 is PP film.

Embodiment two

As embodiment one with two basic setup of embodiment is, primary difference is that: tab process layer 5 is plasma Layer；Membrane layer 4 is PE film.

Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in Within the protection scope of the utility model claims.

Claims

1. a kind of ultra-thin lithium cell tab, which is characterized in that including packaging film (1), positive (2), positive pole ear (21), cathode (3), negative lug (31) and membrane layer (4), the membrane layer are arranged between the anode and cathode；The packaging Film the package anode and cathode；The anode is connected with the positive pole ear, the cathode and the cathode Tab connection, the positive pole ear and the exposed outside in the packaging film of the negative lug；It is described just The surface of pole tab (21) and negative lug (31) is equipped with tab process layer (5), and the tab process layer (5) is plasma Layer or corona layer.

2. ultra-thin lithium cell tab according to claim 1, it is characterised in that: the anode (2) includes anode carrying Layer (22) and positive coating layer (23), the positive coating layer are coated on the two sides of the positive bearing bed.

3. ultra-thin lithium cell tab according to claim 1, it is characterised in that: the cathode (3) includes cathode carrying Layer (32) and cathode coating layer (33), the cathode coating layer are coated on the two sides of the cathode bearing bed.

4. ultra-thin lithium cell tab according to claim 1, it is characterised in that: the packaging film (1) is aluminum plastic film.

5. ultra-thin lithium cell tab according to claim 1, it is characterised in that: the membrane layer (4) is PP film or PE Film.