CN105390657A - Manufacturing method for micro soft package lithium ion battery - Google Patents
Manufacturing method for micro soft package lithium ion battery Download PDFInfo
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- CN105390657A CN105390657A CN201510852419.4A CN201510852419A CN105390657A CN 105390657 A CN105390657 A CN 105390657A CN 201510852419 A CN201510852419 A CN 201510852419A CN 105390657 A CN105390657 A CN 105390657A
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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
- H01M10/058—Construction or manufacture
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0407—Methods of deposition of the material by coating on an electrolyte layer
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a manufacturing method for a micro soft package lithium ion battery. The method comprises the following steps of: 1, preparing a positive electrode plate and a negative electrode plate; 2, punching a positive electrode plate tab on the positive electrode plate, and punching a negative electrode plate tab on the negative electrode plate; 3, laying a diaphragm, the negative electrode plate and the positive electrode plate according to a certain order to obtain a to-be-wound material; 4, performing winding to obtain a wound core; 5, preparing a battery cell tab; and 6, welding the battery cell tab on the wound core, and performing bending and packaging to obtain the micro soft package lithium ion battery. According to the method, the technical difficult problems of difficulty in control on distance between positive and negative tabs and tab-film exposure size, and the like in an existing micro battery are solved; the distance between the positive and negative tabs can be controlled to be within an error range of +/-0.1mm; the tab-film exposure size can be controlled to be within an error range of +/-0.5mm; and therefore, the method is suitable for industrialized stable production.
Description
Technical field
The invention belongs to cell manufacturing techniques field, be specifically related to a kind of manufacture method of miniature flexible packing lithium ion battery.
Background technology
Along with the development of society, lithium ion battery is with its higher energy density, and advantages such as environmental protection and be widely used on electronic product miscellaneous, as digital products such as mobile phone, computer, cameras, intelligence is dressed.Due to the diversified development of electrical appliance, the appearance design of consumer to the demand of battery and battery requires more and more.Especially be in recent years applied in the miniature flexible packing lithium ion battery in intelligent wearing field time gradually, the present invention is that minicell provides a kind of manufacture craft.
The common manufacture method of the miniature flexible packing lithium ion battery of tradition is advanced person's gap, discontinuous coating in the ranks, and then itemize pole section cutting process produces positive and negative plate, carries out tab welding afterwards on pole piece, and then carries out electric core winding, has finally encapsulated.When the method is applied in the minicell field of width 5mm ~ 15mm, often occurring that lug spacing and tab expose can not be effectively controlled, and can not make the less battery core of width, the range of application of serious restriction minicell and batch production.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of manufacture method of miniature flexible packing lithium ion battery.This method solve spacing between the positive and negative lug of existing minicell and tab exposes the technical barriers such as the more difficult control of size, spacing-controllable between positive and negative lug is in ± 0.1mm error range, tab exposes size and can be controlled in ± 0.5mm error range in, be suitable for industrialization steady production.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of manufacture method of miniature flexible packing lithium ion battery, and it is characterized in that, the method comprises the following steps:
Step one, prepare positive plate and negative plate respectively;
Step 2, punch out positive plate lug at the upper left end of positive plate, punch out negative plate lug in the upper right end of negative plate, the shape and size of described positive plate lug and negative plate lug are all equal;
Step 3, the first barrier film is laid on the bottom of negative plate, the second barrier film is laid on the top of negative plate, positive plate is laid on the top of the second barrier film, obtain treating coiled strip; Described positive plate lug and negative plate lug are all positioned at the top for the treatment of coiled strip;
Step 4, will treat described in step 3 that coiled strip reels, and obtains core from bottom to top;
Step 5, battery core anode ear and battery core negative electrode lug to be arranged in parallel, then regulating distance between battery core anode ear and battery core negative electrode lug to meeting design requirement, adopting tab to be connected with battery core negative electrode lug by battery core anode ear afterwards, obtaining cell polar ear; The shape and size of described battery core anode ear and battery core negative electrode lug are all equal;
Step 6, by step 5 connect after battery core anode ear be welded on the positive plate lug of core described in step 4, by the battery core negative pole lug welding after connection on the negative plate lug of described core, then the battery core anode ear after welding and battery core negative electrode lug are all bent, afterwards encapsulation process is carried out to the core after bending, obtain miniature flexible packing lithium ion battery, the width W of described miniature flexible packing lithium ion battery meets 5mm≤W≤15mm, and the length L of described miniature flexible packing lithium ion battery meets: W≤L≤1.5W.
The manufacture method of above-mentioned a kind of miniature flexible packing lithium ion battery, it is characterized in that, the preparation method of positive plate described in step one is: choose aluminium foil coiled strip, then on aluminium foil coiled strip, anode sizing agent is coated with continuously, roll squeezer is adopted to carry out compressing tablet afterwards, finally carry out continuous cutting, obtain positive plate; The preparation method of negative plate described in step one is: choose Copper Foil coiled strip, then on Copper Foil coiled strip, is coated with cathode size continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain negative plate.
The manufacture method of above-mentioned a kind of miniature flexible packing lithium ion battery, is characterized in that, in step 6, the welding toe of weld of battery core anode ear and positive plate lug and the welding toe of weld of battery core negative electrode lug and negative plate lug all adopt gummed paper protection.。
The present invention compared with prior art has the following advantages:
1, the present invention adopts continuously coating in coating process, can surface density stability and production efficiency high;
2, the present invention is in pole piece preparation section, adopts continuous cutting technique, and punch out pole-piece pole-ear on positive and negative plate, for as the position of welding with cell polar ear, for follow-up tab welding provides convenient, reasonable in design ingenious;
3, the present invention prepares the cell polar ear of integral type, and the cell polar ear switching Welding of the rear employing integral type that reeled, enables lug spacing effectively be ensured;
4, the present invention can design arbitrarily fixture according to actual conditions and carries out tab welding, enables battery core pole piece accomplish very little tolerance to the distance of tab, does not affect battery core length after bending, thus after solving encapsulation, tab exposes problem.
5, the invention solves spacing between the positive and negative lug of existing minicell and tab exposes the technical barriers such as the more difficult control of size, spacing-controllable between positive and negative lug is in ± 0.1mm error range, tab exposes size and can be controlled in ± 0.5mm error range in, be suitable for industrialization steady production.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention treats coiled strip.
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1.
Fig. 3 is the structural representation of core of the present invention.
Fig. 4 is the structural representation of cell polar ear of the present invention.
Fig. 5 is the annexation schematic diagram of core of the present invention and cell polar ear.
Description of reference numerals:
1-positive plate; 1-1-positive plate lug; 2-negative plate;
2-1-negative plate lug; 3-1-the first barrier film; 3-2-the second barrier film;
4-treat coiled strip; 5-core; 6-1-battery core anode ear;
6-2-battery core negative electrode lug; 6-3-tab; 7-gummed paper.
Embodiment
Embodiment 1
Composition graphs 1 to Fig. 5, the manufacture method of the miniature flexible packing lithium ion battery of the present embodiment comprises the following steps:
Step one, prepare positive plate 1 and negative plate 2 respectively, the shape of described positive plate 1 and negative plate 2 is strip, and wherein the length of positive plate 1 is 100mm, and width is 9mm, and the length of negative plate 2 is 103mm, and width is 9.5mm; The preparation method of described positive plate 1 is: choose aluminium foil coiled strip, then on aluminium foil coiled strip, is coated with anode sizing agent continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain positive plate 1; The preparation method of described negative plate 2 is: choose Copper Foil coiled strip, then on Copper Foil coiled strip, is coated with cathode size continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain negative plate 2; Described anode sizing agent and cathode size are existing, conventional pulp of lithium ion battery;
Step 2, punch out positive plate lug 1-1 at the upper left end of positive plate 1, punch out negative plate lug 2-1 in the upper right end of negative plate 2, the shape and size of described positive plate lug 1-1 and negative plate lug 2-1 are all equal;
Step 3, the first barrier film 3-1 is laid on the bottom of negative plate 2, the second barrier film 3-2 is laid on the top of negative plate 2, positive plate 1 is laid on the top of the second barrier film 3-2, obtain treating coiled strip 4; Described positive plate lug 1-1 and negative plate lug 2-1 is all positioned at the top for the treatment of coiled strip 4; The described structure treating coiled strip 4 as depicted in figs. 1 and 2;
Step 4, will treat described in step 3 that coiled strip 4 reels, detailed process is: from treating the lower end of coiled strip 4, reel according to order from bottom to top, obtain core 5; The structure of described core 5 as shown in Figure 3;
Step 5, battery core anode ear 6-1 and battery core negative electrode lug 6-2 to be arranged in parallel, then the distance between adjustment battery core anode ear 6-1 and battery core negative electrode lug 6-2 is to meeting design requirement, adopt tab 6-3 to be connected with battery core negative electrode lug 6-2 by battery core anode ear 6-1 afterwards, obtain cell polar ear; The shape and size of described battery core anode ear 6-1 and battery core negative electrode lug 6-2 are all equal; The structure of described cell polar ear as shown in Figure 4;
Step 6, by step 5 connect after battery core anode ear 6-1 be welded on the positive plate lug 1-1 of core 5 described in step 4, battery core negative electrode lug 6-2 after connecting is welded on the negative plate lug 2-1 of described core 5, then all adopt gummed paper 7 to protect the toe of weld of the battery core negative electrode lug 6-2 after the toe of weld of the battery core anode ear 6-1 after welding and positive plate lug 1-1 and welding and negative plate lug 2-1, the structure after cell polar ear welds with coiled strip 5 as shown in Figure 5; Afterwards the battery core anode ear 6-1 after welding and battery core negative electrode lug 6-2 is all bent, first bending downwards, backward upper bending, the lug height of battery core anode ear 6-1 and battery core negative electrode lug 6-2 is met design requirement, afterwards encapsulation process is carried out to the core after bending, obtain miniature flexible packing lithium ion battery, the width of described miniature flexible packing lithium ion battery is 10mm, and the length of described miniature flexible packing lithium ion battery is 12mm.
The present embodiment solves spacing between the positive and negative lug of existing minicell and tab exposes the technical barriers such as the more difficult control of size, spacing-controllable between positive and negative lug is in ± 0.1mm error range, tab exposes size and can be controlled in ± 0.5mm error range in, be suitable for industrialization steady production.
Embodiment 2
Composition graphs 1 to Fig. 5, the manufacture method of the miniature flexible packing lithium ion battery of the present embodiment comprises the following steps:
Step one, prepare positive plate 1 and negative plate 2 respectively, the shape of described positive plate 1 and negative plate 2 is strip, and wherein the length of positive plate 1 is 150mm, and width is 11mm, and the length of negative plate 2 is 155mm, and width is 11.5mm; The preparation method of described positive plate 1 is: choose aluminium foil coiled strip, then on aluminium foil coiled strip, is coated with anode sizing agent continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain positive plate 1; The preparation method of described negative plate 2 is: choose Copper Foil coiled strip, then on Copper Foil coiled strip, is coated with cathode size continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain negative plate 2; Described anode sizing agent and cathode size are existing, conventional pulp of lithium ion battery;
Step 2, punch out positive plate lug 1-1 at the upper left end of positive plate 1, punch out negative plate lug 2-1 in the upper right end of negative plate 2, the shape and size of described positive plate lug 1-1 and negative plate lug 2-1 are all equal;
Step 3, the first barrier film 3-1 is laid on the bottom of negative plate 2, the second barrier film 3-2 is laid on the top of negative plate 2, positive plate 1 is laid on the top of the second barrier film 3-2, obtain treating coiled strip 4; Described positive plate lug 1-1 and negative plate lug 2-1 is all positioned at the top for the treatment of coiled strip 4; The described structure treating coiled strip 4 as depicted in figs. 1 and 2;
Step 4, will treat described in step 3 that coiled strip 4 reels, detailed process is: from treating the lower end of coiled strip 4, reel according to order from bottom to top, obtain core 5; The structure of described core 5 as shown in Figure 3;
Step 5, battery core anode ear 6-1 and battery core negative electrode lug 6-2 to be arranged in parallel, then the distance between adjustment battery core anode ear 6-1 and battery core negative electrode lug 6-2 is to meeting design requirement, adopt tab 6-3 to be connected with battery core negative electrode lug 6-2 by battery core anode ear 6-1 afterwards, obtain cell polar ear; The shape and size of described battery core anode ear 6-1 and battery core negative electrode lug 6-2 are all equal; The structure of described cell polar ear as shown in Figure 4;
Step 6, by step 5 connect after battery core anode ear 6-1 be welded on the positive plate lug 1-1 of core 5 described in step 4, battery core negative electrode lug 6-2 after connecting is welded on the negative plate lug 2-1 of described core 5, then all adopt gummed paper 7 to protect the toe of weld of the battery core negative electrode lug 6-2 after the toe of weld of the battery core anode ear 6-1 after welding and positive plate lug 1-1 and welding and negative plate lug 2-1, the structure after cell polar ear welds with coiled strip 5 as shown in Figure 5; Afterwards the battery core anode ear 6-1 after welding and battery core negative electrode lug 6-2 is all bent, first bending downwards, backward upper bending, the lug height of battery core anode ear 6-1 and battery core negative electrode lug 6-2 is met design requirement, afterwards encapsulation process is carried out to the core after bending, obtain miniature flexible packing lithium ion battery, the width of described miniature flexible packing lithium ion battery is 12mm, and the length of described miniature flexible packing lithium ion battery is 12mm.
The present embodiment solves spacing between the positive and negative lug of existing minicell and tab exposes the technical barriers such as the more difficult control of size, spacing-controllable between positive and negative lug is in ± 0.1mm error range, tab exposes size and can be controlled in ± 0.5mm error range in, be suitable for industrialization steady production.
Embodiment 3
Composition graphs 1 to Fig. 5, the manufacture method of the miniature flexible packing lithium ion battery of the present embodiment comprises the following steps:
Step one, prepare positive plate 1 and negative plate 2 respectively, the shape of described positive plate 1 and negative plate 2 is strip, and wherein the length of positive plate 1 is 60mm, and width is 4mm, and the length of described negative plate 2 is 62mm, and width is 4.5mm; The preparation method of described positive plate 1 is: choose aluminium foil coiled strip, then on aluminium foil coiled strip, is coated with anode sizing agent continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain positive plate 1; The preparation method of described negative plate 2 is: choose Copper Foil coiled strip, then on Copper Foil coiled strip, is coated with cathode size continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain negative plate 2; Described anode sizing agent and cathode size are existing, conventional pulp of lithium ion battery;
Step 2, punch out positive plate lug 1-1 at the upper left end of positive plate 1, punch out negative plate lug 2-1 in the upper right end of negative plate 2, the shape and size of described positive plate lug 1-1 and negative plate lug 2-1 are all equal;
Step 3, the first barrier film 3-1 is laid on the bottom of negative plate 2, the second barrier film 3-2 is laid on the top of negative plate 2, positive plate 1 is laid on the top of the second barrier film 3-2, obtain treating coiled strip 4; Described positive plate lug 1-1 and negative plate lug 2-1 is all positioned at the top for the treatment of coiled strip 4; The described structure treating coiled strip 4 as depicted in figs. 1 and 2;
Step 4, will treat described in step 3 that coiled strip 4 reels, detailed process is: from treating the lower end of coiled strip 4, reel according to order from bottom to top, obtain core 5; The structure of described core 5 as shown in Figure 3;
Step 5, battery core anode ear 6-1 and battery core negative electrode lug 6-2 to be arranged in parallel, then the distance between adjustment battery core anode ear 6-1 and battery core negative electrode lug 6-2 is to meeting design requirement, adopt tab 6-3 to be connected with battery core negative electrode lug 6-2 by battery core anode ear 6-1 afterwards, obtain cell polar ear; The shape and size of described battery core anode ear 6-1 and battery core negative electrode lug 6-2 are all equal; The structure of described cell polar ear as shown in Figure 4;
Step 6, by step 5 connect after battery core anode ear 6-1 be welded on the positive plate lug 1-1 of core 5 described in step 4, battery core negative electrode lug 6-2 after connecting is welded on the negative plate lug 2-1 of described core 5, then all adopt gummed paper 7 to protect the toe of weld of the battery core negative electrode lug 6-2 after the toe of weld of the battery core anode ear 6-1 after welding and positive plate lug 1-1 and welding and negative plate lug 2-1, the structure after cell polar ear welds with coiled strip 5 as shown in Figure 5; Afterwards the battery core anode ear 6-1 after welding and battery core negative electrode lug 6-2 is all bent, first bending downwards, backward upper bending, the lug height of battery core anode ear 6-1 and battery core negative electrode lug 6-2 is met design requirement, afterwards encapsulation process is carried out to the core after bending, obtain miniature flexible packing lithium ion battery, the width of described miniature flexible packing lithium ion battery is 5mm, and the length of described miniature flexible packing lithium ion battery is 6mm.
The present embodiment solves spacing between the positive and negative lug of existing minicell and tab exposes the technical barriers such as the more difficult control of size, spacing-controllable between positive and negative lug is in ± 0.1mm error range, tab exposes size and can be controlled in ± 0.5mm error range in, be suitable for industrialization steady production.
Embodiment 4
Composition graphs 1 to Fig. 5, the manufacture method of the miniature flexible packing lithium ion battery of the present embodiment comprises the following steps:
Step one, prepare positive plate 1 and negative plate 2 respectively, the shape of described positive plate 1 and negative plate 2 is strip, and wherein the length of positive plate 1 is 200mm, and width is 14mm, and the length of described negative plate 2 is 210mm, and width is 14.5mm; The preparation method of described positive plate 1 is: choose aluminium foil coiled strip, then on aluminium foil coiled strip, is coated with anode sizing agent continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain positive plate 1; The preparation method of described negative plate 2 is: choose Copper Foil coiled strip, then on Copper Foil coiled strip, is coated with cathode size continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain negative plate 2; Described anode sizing agent and cathode size are existing, conventional pulp of lithium ion battery;
Step 2, punch out positive plate lug 1-1 at the upper left end of positive plate 1, punch out negative plate lug 2-1 in the upper right end of negative plate 2, the shape and size of described positive plate lug 1-1 and negative plate lug 2-1 are all equal;
Step 3, the first barrier film 3-1 is laid on the bottom of negative plate 2, the second barrier film 3-2 is laid on the top of negative plate 2, positive plate 1 is laid on the top of the second barrier film 3-2, obtain treating coiled strip 4; Described positive plate lug 1-1 and negative plate lug 2-1 is all positioned at the top for the treatment of coiled strip 4; The described structure treating coiled strip 4 as depicted in figs. 1 and 2;
Step 4, will treat described in step 3 that coiled strip 4 reels, detailed process is: from treating the lower end of coiled strip 4, reel according to order from bottom to top, obtain core 5; The structure of described core 5 as shown in Figure 3;
Step 5, battery core anode ear 6-1 and battery core negative electrode lug 6-2 to be arranged in parallel, then the distance between adjustment battery core anode ear 6-1 and battery core negative electrode lug 6-2 is to meeting design requirement, adopt tab 6-3 to be connected with battery core negative electrode lug 6-2 by battery core anode ear 6-1 afterwards, obtain cell polar ear; The shape and size of described battery core anode ear 6-1 and battery core negative electrode lug 6-2 are all equal; The structure of described cell polar ear as shown in Figure 4;
Step 6, by step 5 connect after battery core anode ear 6-1 be welded on the positive plate lug 1-1 of core 5 described in step 4, battery core negative electrode lug 6-2 after connecting is welded on the negative plate lug 2-1 of described core 5, then all adopt gummed paper 7 to protect the toe of weld of the battery core negative electrode lug 6-2 after the toe of weld of the battery core anode ear 6-1 after welding and positive plate lug 1-1 and welding and negative plate lug 2-1, the structure after cell polar ear welds with coiled strip 5 as shown in Figure 5; Afterwards the battery core anode ear 6-1 after welding and battery core negative electrode lug 6-2 is all bent, first bending downwards, backward upper bending, the lug height of battery core anode ear 6-1 and battery core negative electrode lug 6-2 is met design requirement, afterwards encapsulation process is carried out to the core after bending, obtain miniature flexible packing lithium ion battery, the width of described miniature flexible packing lithium ion battery is 15mm, and the length of described miniature flexible packing lithium ion battery is 22.5mm.
The present embodiment solves spacing between the positive and negative lug of existing minicell and tab exposes the technical barriers such as the more difficult control of size, spacing-controllable between positive and negative lug is in ± 0.1mm error range, tab exposes size and can be controlled in ± 0.5mm error range in, be suitable for industrialization steady production.
The above is only preferred embodiment of the present invention, not imposes any restrictions the present invention.Every above embodiment is done according to invention technical spirit any simple modification, change and equivalence change, all still belong in the protection range of technical solution of the present invention.
Claims (3)
1. a manufacture method for miniature flexible packing lithium ion battery, is characterized in that, the method comprises the following steps:
Step one, prepare positive plate (1) and negative plate (2) respectively;
Step 2, punch out positive plate lug (1-1) at the upper left end of positive plate (1), punch out negative plate lug (2-1) in the upper right end of negative plate (2), the shape and size of described positive plate lug (1-1) and negative plate lug (2-1) are all equal;
Step 3, the first barrier film (3-1) is laid on the bottom of negative plate (2), second barrier film (3-2) is laid on the top of negative plate (2), positive plate (1) is laid on the top of the second barrier film (3-2), obtains treating coiled strip (4); Described positive plate lug (1-1) and negative plate lug (2-1) are all positioned at the top for the treatment of coiled strip (4);
Step 4, by treating described in step 3 that coiled strip (4) reels from bottom to top, obtain core (5);
Step 5, battery core anode ear (6-1) and battery core negative electrode lug (6-2) to be arranged in parallel, then the distance between adjustment battery core anode ear (6-1) and battery core negative electrode lug (6-2) is to meeting design requirement, adopt tab (6-3) to be connected with battery core negative electrode lug (6-2) by battery core anode ear (6-1) afterwards, obtain cell polar ear; The shape and size of described battery core anode ear (6-1) and battery core negative electrode lug (6-2) are all equal;
Step 6, battery core anode ear (6-1) after connecting in step 5 is welded on the positive plate lug (1-1) of core described in step 4 (5), battery core negative electrode lug (6-2) after connecting is welded on the negative plate lug (2-1) of described core (5), then the battery core anode ear (6-1) after welding and battery core negative electrode lug (6-2) are all bent, carry out encapsulation process afterwards, obtain miniature flexible packing lithium ion battery, the width W of described miniature flexible packing lithium ion battery meets 5mm≤W≤15mm, the length L of described miniature flexible packing lithium ion battery meets: W≤L≤1.5W.
2. the manufacture method of a kind of miniature flexible packing lithium ion battery according to claim 1, it is characterized in that, the preparation method of positive plate described in step one (1) is: choose aluminium foil coiled strip, then on aluminium foil coiled strip, anode sizing agent is coated with continuously, roll squeezer is adopted to carry out compressing tablet afterwards, finally carry out continuous cutting, obtain positive plate (1); The preparation method of negative plate described in step one (2) is: choose Copper Foil coiled strip, then on Copper Foil coiled strip, is coated with cathode size continuously, adopts roll squeezer to carry out compressing tablet afterwards, finally carries out continuous cutting, obtain negative plate (2).
3. the manufacture method of a kind of miniature flexible packing lithium ion battery according to claim 1; it is characterized in that, in step 6, the welding toe of weld of battery core anode ear (6-1) and positive plate lug (1-1) and the welding toe of weld of battery core negative electrode lug (6-2) and negative plate lug (2-1) all adopt gummed paper (7) to protect.
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| CN201510852419.4A CN105390657A (en) | 2015-11-28 | 2015-11-28 | Manufacturing method for micro soft package lithium ion battery |
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| CN201510852419.4A CN105390657A (en) | 2015-11-28 | 2015-11-28 | Manufacturing method for micro soft package lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108886170A (en) * | 2016-04-07 | 2018-11-23 | 宁德新能源科技有限公司 | Pole piece, battery core and energy storage device |
| CN109728356A (en) * | 2018-12-28 | 2019-05-07 | 蜂巢能源科技有限公司 | The processing method of Symmetrical cells tooling and Symmetrical cells |
| CN110085797A (en) * | 2019-05-23 | 2019-08-02 | 西安瑟福能源科技有限公司 | A kind of polymer Li-ion battery disjunctor tab and production and preparation method thereof |
| CN112086585A (en) * | 2019-06-14 | 2020-12-15 | 东莞新能德科技有限公司 | Battery with a battery cell |
| CN112099043A (en) * | 2020-08-21 | 2020-12-18 | 远景动力技术(江苏)有限公司 | Method for measuring gap and inclination angle of battery tab and battery piece and welding compensation method |
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| CN108886170A (en) * | 2016-04-07 | 2018-11-23 | 宁德新能源科技有限公司 | Pole piece, battery core and energy storage device |
| US11145868B2 (en) | 2016-04-07 | 2021-10-12 | Ningde Amperex Technology Limited | Electrode piece, cell and energy storage device |
| CN108886170B (en) * | 2016-04-07 | 2021-12-10 | 宁德新能源科技有限公司 | Pole piece, battery cell and energy storage device |
| CN109728356A (en) * | 2018-12-28 | 2019-05-07 | 蜂巢能源科技有限公司 | The processing method of Symmetrical cells tooling and Symmetrical cells |
| CN110085797A (en) * | 2019-05-23 | 2019-08-02 | 西安瑟福能源科技有限公司 | A kind of polymer Li-ion battery disjunctor tab and production and preparation method thereof |
| CN110085797B (en) * | 2019-05-23 | 2022-04-19 | 西安瑟福能源科技有限公司 | Polymer lithium ion battery connected tab and manufacturing and using methods thereof |
| CN112086585A (en) * | 2019-06-14 | 2020-12-15 | 东莞新能德科技有限公司 | Battery with a battery cell |
| CN112086585B (en) * | 2019-06-14 | 2023-09-26 | 东莞新能德科技有限公司 | Battery cell |
| CN112099043A (en) * | 2020-08-21 | 2020-12-18 | 远景动力技术(江苏)有限公司 | Method for measuring gap and inclination angle of battery tab and battery piece and welding compensation method |
| CN112099043B (en) * | 2020-08-21 | 2024-03-22 | 远景动力技术(江苏)有限公司 | Method for measuring and welding compensation of gap and inclination angle between battery tab and tab |
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