CN110311064A - A kind of lithium ion battery cylindrical shell and preparation method thereof with heating function - Google Patents
A kind of lithium ion battery cylindrical shell and preparation method thereof with heating function Download PDFInfo
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- CN110311064A CN110311064A CN201910532499.3A CN201910532499A CN110311064A CN 110311064 A CN110311064 A CN 110311064A CN 201910532499 A CN201910532499 A CN 201910532499A CN 110311064 A CN110311064 A CN 110311064A
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- material layer
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- lithium ion
- ion battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of lithium ion battery cylindrical shell and preparation method thereof with heating function, the shell successively include polymer material layer, first binder layer, heating film layer, the second adhesive layer, metal material layer from outside to inside；The preparation method of the cylindrical shell is to prepare the cylindrical barrel metal material layer substrate of bottom cover first；Secondly successively coating is superimposed the second adhesive layer, heating film layer, first binder layer and external polymer material layer in metal material layer substrate, is made of dry method or thermal method technique, with a thickness of 130 ~ 510 μm.Micron order electric heating film is placed in lithium ion battery cylindrical shell by the present invention, form the lithium ion battery cylindrical shell with heating function, it effectively solves cylindrical lithium ion battery easy analysis lithium at low ambient temperatures, the drawback that capacity reduces, cycle life is short, effectively improves the cryogenic property of cylindrical lithium ion battery.
Description
Technical field
The invention belongs to electrochmical power source Material Field, be related to a kind of lithium ion battery cylindrical shell with heating function and
Preparation method.
Technical background
Shell used in column lithium ion battery mostly uses greatly ordinary steel shell at present, and anti-pressure ability is strong, is unlikely to deform,
But do not have heating function, this makes lithium ion battery, and internal resistance raising, capacity reduction, discharging efficiency reduce at low ambient temperatures,
Cycle life shortens.
Someone has carried out the research of lithium battery cylindrical steel, such as patent 201420574656.X provides a kind of cylinder
Lithium cell steel shell belongs to the application field of 18650 cylinder lithium electricity, defines diameter, thickness height of steel shell etc.；Patent
201220306855.3 provide a kind of lithium battery steel shell, including steel thimble and steel shell bottom, shell bottom with a thickness of 1 ~ 2mm,
It can be equipped with liquid injection hole on the ground.From the method having disclosed as it can be seen that current research primarily directed to cylindrical shell material and ruler
Very little aspect cannot achieve the heating of shell and single battery core.
Summary of the invention
To solve the above-mentioned problems, the service performance of lithium ion battery at low ambient temperatures is improved, the present invention provides one kind
Micron order electric heating film is placed on lithium ion battery by lithium ion battery cylindrical shell with heating function and preparation method thereof
In cylindrical shell, the lithium ion battery cylindrical shell with heating function is formd, specific technical solution is as follows:
A kind of lithium ion battery cylindrical shell with heating function, the cylindrical shell are set in the lithium-ion electric of cylindrical shape
It from outside to inside successively include mutually being close to fixed polymer material layer, heating film layer, metal material layer outside pond,
The heating film layer is connected with positive terminal and negative terminal, and positive terminal and negative terminal are vertically penetrated into macromolecule material
The outer surface of the bed of material, and intermediate muster is formed, the solid dot shape that surrounding is close to high molecular material layer surface.
Further, it is adhesively fixed, is heated by first binder layer between the polymer material layer and heating film layer
It is adhesively fixed between film layer and metal material layer by the second adhesive layer,
Positive terminal and negative terminal vertically penetrate first binder layer and polymer material layer.
Further, it is described heating film layer with a thickness of 2 ~ 50 μm.
Further, the ingredient of the polymer material layer be nylon, polypropylene, polyamide, polyurethane one kind or its
In any number of combination, the polymer material layer with a thickness of 10 ~ 50 μm.
Further, the ingredient of the adhesive layer be polyurethane, epoxy resin Kynoar, polyacrylate one
Kind or in which any number of combination, the adhesive layer with a thickness of 2 ~ 5 μm.
Further, the ingredient of the metal material layer is iron, ferroalloy, aluminium, one kind of aluminium alloy or in which any number of
Combination, the metal material layer with a thickness of 120 ~ 400 μm.
Further, the metal material layer with a thickness of 120 ~ 400 μm.
The preparation method of lithium ion battery cylindrical shell with heating function, comprising the following steps:
Step 1: preparing substrate: choosing polymer material layer, the heating film layer, metal material layer of sheet, curled into circle
Tube shape,
Step 2: pretreatment: the two-sided carry out plasma sided corona treatment of single side and heating film layer to polymer material layer, respectively
Corresponding process face is formed, chromaking processing is carried out to the circular tube external surface of metal material layer；
Step 3: gluing: coating or spraying adhesive on the circular tube external surface of metal material layer；
Step 4: package heating film layer: by the round tube surface one of the one side edge of the heating film layer of rectangular patch and metal material layer
The alignment of axis, is rolled up one week around the circular tube external surface of metal material layer, and with opposite side edge splicing fixation, be fitted in gold
Belong to material surface；
Step 5: package polymer material layer: the compound round tube table of the metal material layer and metal material layer (5) obtained in step 4
Face coating or spraying adhesive, then by one, the round tube surface axis pair of the one side edge of polymer material layer and metal material layer
Together, it is rolled up one week around the circular tube external surface of metal material layer, and splices with opposite side edge and fix, be fitted in heating film layer table
Face.
Further, it in step 1, heats and positive terminal and negative terminal is fixedly mounted in film layer, and in high molecular material
Two holes of corresponding position of layer, when polymer material layer is covered in heating film layer, positive terminal and negative terminal just from
It is passed through in corresponding two holes.
Further, it in the step 4 during cladding heats film layer, during being gradually bonded, is synchronized to and adds
Hotting mask layer pressure,
In step 5 during coated high molecular material layer, during being gradually bonded, it is synchronized to polymer material layer and applies
Pressure,
It after the completion of step 4 and step 5, holds tightly and presses on its surface, and maintain to solidify until binder.
The utility model has the advantages that the present invention effectively solves lithium ion battery, internal resistance raising, capacity reduce, discharge and imitate at low ambient temperatures
The problem of rate reduces, and cycle life shortens, effectively improves the low temperature service performance of cylindrical lithium ion battery, meanwhile, effectively solve
The drawbacks such as certainly easy analysis lithium, the capacity of cylindrical lithium ion battery at low ambient temperatures reduce, cycle life is short, in addition, of the invention
Shell manufacturing process is convenient to carry out, easy to produce and process.
Detailed description of the invention
Fig. 1 is the partial cutaway view of lithium ion battery cylindrical shell structure of the invention,
Fig. 2 is the perspective view of lithium ion battery cylindrical shell of the invention,
In figure: 1-polymer material layer, 2-first binder layers, 3-heating film layers, the 4-the second adhesive layer, 5-metals
Material layer, 6-positive terminals, 7-negative terminals, 8-lithium ion battery cylindrical shells.
Specific embodiment
In the following with reference to the drawings and specific embodiments, patent that the present invention is furture elucidated, it should be understood that these embodiments are only used for
Illustrate the invention patent rather than limits the range of the invention patent, after having read the invention patent, art technology
Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the invention patent.
The structure of visible this patent is the macromolecule material for from outside to inside successively including mutually abutting fixation combined with Figure 1 and Figure 2,
The bed of material 1, first binder layer 2, heating film layer 3, the second adhesive layer 4, metal material layer 5, heating film layer 3 are connected with positive terminal
Son 6 and negative terminal 7, positive terminal 6 and negative terminal 7 are vertically penetrated into polymer material layer 1 and first binder layer 2, and
Intermediate muster, the solid salient point shape that surrounding is close to 1 surface of polymer material layer are formed in 1 outer surface of polymer material layer
Shape.Each layer stackup is fixed to form compound hollow circular-tube structure, the internal lithium ion battery for being used to be packed into cylinder, whole structure
At lithium ion battery cylindrical shell 8.
Several production are given below, and this has several tools of the preparation method of the lithium ion battery cylindrical shell of heating function
Body embodiment:
Embodiment one
Firstly, preparing the ferroalloy cylindrical barrel substrate that wall thickness is 120 μm；
Second, with reference to Fig. 1, the polyurethane binder layer that coating is superimposed with a thickness of 2 μm outside tubbiness substrate；
Third, with reference to Fig. 1, the heating film layer that coating is superimposed with a thickness of 2 μm on the basis of step 2, and guarantee to heat film layer
Anode and cathode terminals are convenient for following process by enough length；
4th, with reference to Fig. 1, the epoxy resin Kynoar binder that coating is superimposed with a thickness of 2 μm on the basis of step 3
Layer；
5th, with reference to Fig. 1, the nylon polymer material layer that coating is superimposed with a thickness of 10 μm on the basis of step 4；
6th, with reference to Fig. 2, make that each layer is bonded close and to guarantee that the anode and cathode terminals for heating film layer are placed in outermost using dry method, most
Obtaining wall thickness eventually is 136 μm of lithium ion battery cylindrical shells with heating function.
Embodiment two
Firstly, preparing the aluminium alloy cylindrical barrel substrate that wall thickness is 400 μm；
Second, with reference to Fig. 1, outside tubbiness substrate coating superposition with a thickness of 5 μm of polyurethane, epoxy resin Kynoar,
Polyacrylate hybrid adhesive layer；
Third, with reference to Fig. 1, the heating film layer that coating is superimposed with a thickness of 50 μm on the basis of step 2, and guarantee to heat film layer
Anode and cathode terminals are convenient for following process by enough length；
4th, with reference to Fig. 1, on the basis of step 3 coating superposition with a thickness of 5 μm of polyurethane, epoxy resin Kynoar,
Polyacrylate hybrid adhesive layer；
5th, with reference to Fig. 1, coating superposition is on the basis of step 4 with a thickness of 50 μm of nylon, polypropylene, polyamide, polyurethane
Mix polymer material layer；
6th, with reference to Fig. 2, make that each layer is bonded close and to guarantee that the anode and cathode terminals for heating film layer are placed in outermost using thermal method, most
Obtaining wall thickness eventually is 510 μm of lithium ion battery cylindrical shells with heating function.
Embodiment three
Firstly, preparing the aluminium alloy cylindrical barrel substrate that wall thickness is 200 μm；
Second, with reference to Fig. 1, the polyacrylate binder layer that coating is superimposed with a thickness of 3 μm outside tubbiness substrate；
Third, with reference to Fig. 1, the heating film layer that coating is superimposed with a thickness of 20 μm on the basis of step 2, and guarantee to heat film layer
Anode and cathode terminals are convenient for following process by enough length；
4th, with reference to Fig. 1, the polyurethane binder layer that coating is superimposed with a thickness of 5 μm on the basis of step 3；
5th, with reference to Fig. 1, the polypropylene high molecular material layer that coating is superimposed with a thickness of 20 μm on the basis of step 4；
6th, with reference to Fig. 2, make that each layer is bonded close and to guarantee that the anode and cathode terminals for heating film layer are placed in outermost using dry method, most
Obtaining wall thickness eventually is 248 μm of lithium ion battery cylindrical shells with heating function.
Example IV
Firstly, preparing the irony cylindrical barrel substrate that wall thickness is 300 μm；
Second, with reference to Fig. 1, the epoxy resin Kynoar adhesive layer that coating is superimposed with a thickness of 3 μm outside tubbiness substrate；
Third, with reference to Fig. 1, the heating film layer that coating is superimposed with a thickness of 35 μm on the basis of step 2, and guarantee to heat film layer
Anode and cathode terminals are convenient for following process by enough length；
4th, with reference to Fig. 1, on the basis of step 3 coating superposition with a thickness of 4 μm of polyurethane, epoxy resin Kynoar,
Polyacrylate mixing knot oxidant layer；
5th, with reference to Fig. 1, the polyamide polymer material layer that coating is superimposed with a thickness of 40 μm on the basis of step 4；
6th, with reference to Fig. 2, make that each layer is bonded close and to guarantee that the anode and cathode terminals for heating film layer are placed in outermost using thermal method, most
Obtaining wall thickness eventually is 382 μm of lithium ion battery cylindrical shells with heating function.
The lithium ion battery cylindrical shell that 4 above-mentioned embodiments are prepared is applied to cylindrical lithium ion battery
When surface, by being powered to positive terminal and negative terminal, heating film layer fever obtains column lithium ion battery stable
Heating, lithium ion battery service performance are more stable.
It is also confirmed by 4 above-mentioned embodiments, the thickness and material for each layer that this patent provides are that can allow pair
The shell answered reaches good heating effect, protects lithium ion battery.
Claims (10)
1. a kind of lithium ion battery cylindrical shell with heating function, the cylindrical shell are set in the lithium ion of cylindrical shape
Outside batteries, it is characterised in that: from outside to inside successively include mutually being close to fixed polymer material layer (1), heating film layer
(3), metal material layer (5),
The heating film layer (3) is connected with positive terminal (6) and negative terminal (7), and positive terminal (6) and negative terminal (7) hang down
It directly is penetrated into the outer surface of polymer material layer (1), and forms intermediate muster, surrounding and polymer material layer (1) surface are tight
The solid dot shape of patch.
2. the lithium ion battery cylindrical shell according to claim 1 with heating function, which is characterized in that the high score
It is adhesively fixed between sub- material layer (1) and heating film layer (3) by first binder layer (2), heats film layer (3) and metal material
It is adhesively fixed between layer (5) by the second adhesive layer (4),
Positive terminal (6) and negative terminal (7) vertically penetrate first binder layer (2) and polymer material layer (1).
3. the lithium ion battery cylindrical shell according to claim 1 with heating function, which is characterized in that the heating
Film layer with a thickness of 2 ~ 50 μm.
4. the lithium ion battery cylindrical shell according to claim 1 with heating function, which is characterized in that the high score
The ingredient of sub- material layer is one kind or in which any number of combination of nylon, polypropylene, polyamide, polyurethane, the macromolecule material
The bed of material with a thickness of 10 ~ 50 μm.
5. a kind of lithium ion battery cylindrical shell with heating function according to claim 1, which is characterized in that described
The ingredient of adhesive layer is one kind or in which any number of combination of polyurethane, epoxy resin Kynoar, polyacrylate, institute
State adhesive layer with a thickness of 2 ~ 5 μm.
6. a kind of lithium ion battery cylindrical shell with heating function according to claim 1, which is characterized in that described
The ingredient of metal material layer is one kind or in which any number of combination of iron, ferroalloy, aluminium, aluminium alloy, the metal material layer
With a thickness of 120 ~ 400 μm.
7. a kind of lithium ion battery cylindrical shell with heating function according to claim 1, which is characterized in that described
Metal material layer with a thickness of 120 ~ 400 μm.
8. the preparation method of the lithium ion battery cylindrical shell with heating function, which comprises the following steps:
Step 1: preparing substrate: choosing polymer material layer (1), heating film layer (3), metal material layer (5) of sheet, rolled up
It is curved at round tube shape,
Step 2: pretreatment: at the two-sided carry out plasma corona of the single side of polymer material layer (1) and heating film layer (3)
Reason, is respectively formed corresponding process face, carries out chromaking processing to the circular tube external surface of metal material layer (5)；
Step 3: gluing: coating or spraying adhesive on the circular tube external surface of metal material layer (5)；
Step 4: package heating film layer (3): by the one side edge of the heating film layer (3) of rectangular patch and metal material layer (5)
The axis alignment of one, round tube surface, the circular tube external surface around metal material layer (5) are rolled up one week, and are spliced with opposite side edge
It is fixed, it is fitted in metal material layer (5) surface；
Step 5: package polymer material layer (1): the metal material layer (5) and metal material layer (5) obtained in step 4 is compound
The coating of round tube surface or spraying adhesive, then by the round tube table of the one side edge of polymer material layer (1) and metal material layer (5)
The axis alignment of one, face, the circular tube external surface around metal material layer (5) is rolled up one week, and is spliced with opposite side edge and fixed,
It is fitted in heating film layer (3) surface.
9. the preparation method of the lithium ion battery cylindrical shell according to claim 8 with heating function, feature exist
In, in step 1, fixed installation positive terminal and negative terminal in heating film layer (3), and the correspondence in polymer material layer (1)
The position hole Liang Ge, when polymer material layer (1) is covered in heating film layer (3), positive terminal and negative terminal are just from right
It is passed through in two holes answered.
10. the preparation method of the lithium ion battery cylindrical shell according to claim 8 with heating function, feature exist
In, in the step 4 cladding heat film layer (3) during, gradually be bonded during, be synchronized to heating film layer (3) apply
Pressure,
In step 5 during coated high molecular material layer (1), during being gradually bonded, it is synchronized to polymer material layer
(1) it presses,
It after the completion of step 4 and step 5, holds tightly and presses on its surface, and maintain to solidify until binder.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112201864A (en) * | 2020-09-27 | 2021-01-08 | Oppo广东移动通信有限公司 | Battery, electronic device and electronic device assembly |
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| CN112201864A (en) * | 2020-09-27 | 2021-01-08 | Oppo广东移动通信有限公司 | Battery, electronic device and electronic device assembly |
| CN112201864B (en) * | 2020-09-27 | 2022-07-08 | Oppo广东移动通信有限公司 | Battery, electronic device and electronic device assembly |
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Application publication date: 20191008 |