CN110247022A - A kind of production method of SMT patch battery and pole piece and the battery and pole piece - Google Patents

A kind of production method of SMT patch battery and pole piece and the battery and pole piece Download PDF

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Publication number
CN110247022A
CN110247022A CN201910548733.1A CN201910548733A CN110247022A CN 110247022 A CN110247022 A CN 110247022A CN 201910548733 A CN201910548733 A CN 201910548733A CN 110247022 A CN110247022 A CN 110247022A
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hole
layer
pole piece
battery
positive plate
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CN110247022B (en
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陈志勇
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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
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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
    • 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 & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses the production methods of a kind of SMT patch battery and pole piece and the battery and pole piece, comprising: is mixed evenly electrode active material and first binder, to form slurry, on a wire mesh by slurry attachment, and is pressed into electrode plate；The electrode active material is solidified；First through hole is opened up on electrode plate after hardening, insulation material layer is set on the inner wall of first through hole；The second through-hole is opened up on electrode plate, and conductor layer is set on the inner wall of the second through-hole.Of the invention one has technical effect that, simplifies the manufacture craft of patch battery.

Description

A kind of production method of SMT patch battery and pole piece and the battery and pole piece
Technical field
The present invention relates to patch battery technology fields, more particularly, to a kind of SMT patch battery and pole piece and the electricity The production method in pond and pole piece.
Background technique
With the development of science and technology electronic product increasingly tends to minimize, electronic product usually requires battery power supply.In order to The development trend of miniaturization of electronic products is adapted to, battery is commonly made to non-dismountable formula.Since patch battery can be according to electricity The structure setting of sub- interiors of products is at different shapes, therefore patch battery is widely used in electronic product.Existing patch The method that the pole plate of battery generallys use coating, by electrode active material spread on membrane material.
However, the technique of existing patch battery production method is cumbersome, the structural strength of pole plate is low.Patch battery is used Material limit the performance boost of existing patch battery, be not able to satisfy patch battery upgrading demand.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above problems.
Summary of the invention
It is an object of the present invention to provide the production methods of a kind of SMT patch battery and pole piece and the battery and pole piece New solution.
According to the first aspect of the invention, a kind of production method of the pole piece of SMT patch battery is provided, comprising:
Electrode active material and first binder are mixed evenly, to form slurry, the slurry is attached to wire On the net, and it is pressed into electrode plate；
The electrode active material is solidified；
First through hole is opened up on the electrode plate after hardening, insulating materials is set on the inner wall of the first through hole Layer；
The second through-hole is opened up on electrode plate, and conductor layer is set on the inner wall of second through-hole.
Optionally, the electrode active material is the material for including lithium ion, in the through-thickness of the electrode plate At least one surface is provided with spacer material layer, and the spacer material layer is porous layer of the selectivity by lithium ion.
According to another aspect of the present invention, a kind of pole piece of SMT patch battery, including electrode plate, the electricity are provided Pole plate includes wire mesh and the electrode active material that is attached on the wire mesh, and the electrode active material is pressed into Type is simultaneously solidificated on the wire mesh, and first through hole and the second through-hole are provided on the electrode plate；The first through hole Inner wall be provided with insulation material layer, the inner wall of second through-hole is provided with conductor layer.
Optionally, the electrode active material is the material for including lithium ion, in the through-thickness of the electrode plate At least one surface is provided with spacer material layer, and the spacer material layer is porous layer of the selectivity by lithium ion.
Optionally, the electrode active material is LiCoO2、LiFePO4、LiMn2O4At least one of.
Optionally, the electrode active material is at least one of graphite and silicon.
According to another aspect of the present invention, a kind of production method of SMT patch battery is provided, comprising:
Positive plate is made using the production method of the pole piece of above-mentioned SMT patch battery, wherein the electrode active material is Positive electrode active materials including lithium ion；Negative electrode tab is made using the production method of the pole piece of above-mentioned SMT patch battery, wherein The electrode active material is negative electrode active material；
Spacer material layer is formed on the surface of the through-thickness of at least one of the positive plate and the negative electrode tab, Wherein, the spacer material layer is porous layer of the selectivity by lithium ion；
The coated electrolyte on the surface of the positive plate and the negative electrode tab, and/or by the positive plate and described negative Pole piece impregnates electrolyte；
The positive plate and the negative electrode tab are arranged alternately, to form stepped construction, wherein the spacer material layer position Between the adjacent positive plate and the negative electrode tab, the spacer material layer with the first through hole of the positive plate and The corresponding position of two through-holes is hollow out, the second through-hole phase of the first through hole and the negative electrode tab of the positive plate Right, to form first passage, second through-hole of the positive plate is opposite with the first through hole of the negative electrode tab, with shape At second channel；
The stepped construction is pressed together；
Conductive material is respectively set in the first passage and the second channel, the conductive material leads to corresponding Conductor layer connection in road.
Optionally, it after the step of conductive material being respectively set in the first passage and the second channel, also wraps It includes:
The stepped construction is placed into mold；
Insulating protective layer is molded outside the stepped construction.
According to another aspect of the present invention, a kind of SMT patch battery, including battery core are provided, battery core includes above-mentioned electricity Pole active material is LiCoO2, LiFePO4、LiMn2O4At least one of pole piece, above-mentioned electrode active material be graphite Pole piece and the spacer material layer being arranged between two pole pieces；
Defining electrode active material is LiCoO2, LiFePO4、LiMn2O4At least one of pole piece be positive plate, electricity Pole active material is that the pole piece of graphite is negative electrode tab, and the positive plate and the negative electrode tab are arranged alternately, the spacer material layer Position corresponding with the first through hole of the positive plate and the second through-hole be hollow out, the first through hole of the positive plate It is opposite with second through-hole of the negative electrode tab, to form first passage, second through-hole of the positive plate with it is described The first through hole of negative electrode tab is opposite, to form second channel；It is set respectively in the first passage and the second channel It is equipped with conductive material, the conductive material is connected with the conductor layer in corresponding channel.
Optionally, injection molding is formed with insulating protective layer outside the battery core.
According to one embodiment of the disclosure, the preparation method of SMT is applied in patch battery, this mode is significantly simple The preparation process of patch battery is changed.
In addition, the structural strength of pole piece is high.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even With its explanation together principle for explaining the present invention.
Fig. 1 is the cross-sectional view of the battery core of the SMT patch battery of one embodiment of the disclosure.
Fig. 2 is the structural schematic diagram on a surface of the pole piece of one embodiment of the disclosure.
Fig. 3 is the cross-sectional view of the pole piece of one embodiment of the disclosure.
Fig. 4 is the cross-sectional view of the SMT patch battery of one embodiment of the disclosure.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
According to one embodiment of the disclosure, as shown in figures 2-3, a kind of production of the pole piece of SMT patch battery is provided Method, comprising:
Electrode active material 11 and first binder are mixed evenly, to form slurry, slurry is attached to wire mesh On 12, and it is pressed into electrode plate 1, slurry and wire mesh 12 are pressed into electrode plate 1 together for example, by using extrusion equipment；
Electrode plate 1 is solidified；
First through hole 6 is opened up on electrode plate 1 after hardening, insulation material layer 4 is set on the inner wall of first through hole 6；
The second through-hole 7 is opened up on electrode plate, covers conductor layer 5 in the inner wall of the second through-hole.
In this embodiment, the main component of first binder is PVDF, i.e., linear crystal type partial fluorine ethylene polymer.The The viscosity of one binder is in 3~5 Pascal seconds (1Pa.s).PVDF dissolves in a solvent to form first binder.For example, molten Agent is acetone, NMP etc..
The material of wire mesh 12 is the alloy of gold, copper, silver, aluminium, titanium, magnesium or the above metal.Wire mesh is that braiding is enclosed At tridimensional network.For example, the aperture of wire mesh 12 is 120~150mm, porosity is then 100 mesh~120 mesh.? In above range, the structural strength of wire mesh 12 is high, and can adhere to more electrode active materials.
In addition, wire mesh 12 can play conductive effect.
For example, electrode plate with a thickness of 0.05mm~0.5mm.Electrode plate structure in the form of sheets.The global shape of electrode plate can To be, but not limited to, rectangle, circle, triangle, diamond shape, ellipse etc..Here, can be, the patch of a model is formed One electrode plate of battery；It is also possible to form one piece of whole plate, is then cut into according to the size of the patch battery of different model The unit piece of predetermined shape.In one example, the volatilizable ingredient that first binder is removed by way of high-temperature baking, from And solidify electrode plate.Certainly, can also be solidified by way of air drying according to the ingredient difference of first binder.
The first through hole opened on electrode plate after hardening and the second through-hole.First through hole and the second through-hole are close to rectangle Unit piece two along its length end, and in the middle position of width direction.Wherein, it is provided in first through hole Insulation material layer.Insulation material layer plays the role of insulation.The material of insulation material layer is plastics, glass, ceramics, rubber etc.. In the inner wall of the second through-hole, conductor layer is set.When being powered, conductor layer is connected with electrode active material and/or wire mesh.It leads The material of body layer is metal, electro-conductive glass, conductive plastics or conductivity ceramics etc..
In one embodiment, as shown in figure 3, the wire mesh 12 in electrode plate 1 is two layers.
In this embodiment, compared to single layer structure, the binding force of double layer of metal silk screen and electrode active material is bigger.
In addition, the structural strength of double layer of metal silk screen is higher, this makes the structural strength of electrode plate higher, and stability is more By force.
Certainly, wire mesh can also be that one layer or other numbers of plies, those skilled in the art can be according to actual needs The number of plies of wire mesh is set.
In the embodiments of the present disclosure, the preparation method of SMT is applied in patch battery, this mode enormously simplifies patch The preparation process of piece battery.
In addition, the structural strength of pole piece is high.
In one embodiment, electrode active material 11 is the material for including lithium ion, in the through-thickness of electrode plate 1 At least one surface be provided with spacer material layer 2, spacer material layer 2 is the porous layer that selectivity passes through lithium ion.Material is isolated The bed of material allows conductive ion to pass through for making positive and negative plate insulate.In this example embodiment, spacer material layer is in conjunction with electrode plate Together.When forming patch battery, do not need that separation layer is in addition arranged between positive and negative plate.This setup makes The assembling of the battery core of patch battery becomes easy.
In addition, the precision of battery core assembling is higher.
In one embodiment, insulation material layer 4 and spacer material layer 2 are ceramic insulating material.4 He of insulation material layer Spacer material layer 2 is integrated sinter molding.
In this embodiment, ceramic insulating material can be realized the exhausted of insulating effect in first through hole and spacer material layer Edge effect.
In the preparation, firstly, by the raw material of ceramic insulating material on the hole wall of first through hole and electrode plate On surface；Then, it is formed by way of sintering.
During the sintering process, particle microcosmic in material and interparticle contact part are indissoluble.It is porous to be formed Structure.When integrated molding can avoid each self-forming, the insulation of insulation material layer 4 and spacer material layer 2 contact site between the two The problem of intensity difference, has ensured the reliability of insulation performance, improves the durability of pole piece.
In addition, being integrally formed the setting steps for simplifying insulation material layer 4 and spacer material layer 2.
For example, insulation material layer and spacer material layer that ceramic insulating material is formed are with a thickness of 5um~15um.Sintering process Using gas pressure sintering (gas pressure sintering, GPS).Gas pressure sintering refers to applies scheduled gas during the sintering process The sintering processing of body pressure.For example, generally using N2, pressure limit is in 1~10MPa, and temperature is at 600~650 DEG C.The sintered bar Part is able to suppress the decomposition and weightlessness of ceramic material under high temperature, so as to shorten the sintering time of ceramic insulating material, further promotees Into the densification of ceramic insulating material, highdensity insulation material layer and spacer material layer are obtained.
In one embodiment, ceramic insulating material includes AI2O3、MgO、BeO、CaO、Si3N4With at least one in ZrO Kind.
In this embodiment, the material of selection can be one of above-mentioned material or a variety of mixing.The ceramics of formation Insulating materials has good insulating capacity, and porous structure of the selectivity by lithium ion is capable of forming after sinter molding.
In one embodiment, electrode active material LiCoO2、LiFePO4、LiMn2O4At least one of.
In this embodiment, electrode active material selects the material containing lithium ion, so that above-mentioned electrode plate can be used in patch Positive plate in piece battery, as patch battery.
In one embodiment, electrode active material is at least one of graphite and silicon.
In this embodiment, using pole piece made of the mixture of graphite, silicon or both as the negative electrode tab of patch battery.Silicon The addition of material can promote the energy density of patch battery, be mentioned under the premise of not changing original patch battery volume with reaching The electricity capacity of high patch battery.
In another embodiment of the disclosure, a kind of pole piece of SMT patch battery, including electrode plate 1, electrode are provided Plate 1 includes wire mesh 12 and the electrode active material 11 being attached on wire mesh 12, and the electrode active material 11 is pressed Type is made and solidifies on a wire mesh.First through hole 6 and the second through-hole 7 are provided on electrode plate 1；First through hole 6 it is interior Wall is provided with insulation material layer 4, and the inner wall of the second through-hole 7 is provided with conductor layer 5.
In this embodiment, the basic structure of electrode plate is wire mesh and electrode active material compression moulding.It is wherein golden Belonging to silk screen stablizes the frame structure of electrode plate, and electrode active material makes electrode plate possess chemical characteristic.By electrode active after solidification The shape and structure of property material and wire mesh is fixed, and intensity is also enhanced.First through hole and the second through-hole are close to rectangular The two along its length end of the unit piece of shape, and in the middle position of width direction.It is provided in first through hole absolutely Edge material layer, insulation material layer play insulating effect, and the material of insulation material layer is plastics, glass, ceramics, rubber etc..? Conductor layer is arranged in the inner wall of two through-holes, and when being powered, conductor layer is connected with electrode active material and/or wire mesh.Conductor layer Material be metal, electro-conductive glass, conductive plastics or conductivity ceramics etc..
Wherein, the main component of first binder is PVDF, i.e., linear crystal type partial fluorine ethylene polymer, first binder Viscosity in 3~5 Pascal seconds (1Pa.s).PVDF dissolves in a solvent to form first binder.For example, solvent is third Ketone, NMP etc..
The material of wire mesh is the alloy of gold, copper, silver, aluminium, titanium, magnesium or the above metal.Wire mesh is that braiding surrounds Tridimensional network.For example, the aperture of wire mesh is 120~150mm, porosity is in 100 mesh~120 mesh.Above-mentioned In range, the structural strength of wire mesh 12 is high, and can adhere to more electrode active materials.
In addition, wire mesh 12 can play conductive effect.
For example, electrode plate with a thickness of 0.05mm~0.5mm, electrode plate structure in the form of sheets.The global shape of electrode plate can To be, but not limited to, rectangle, circle, triangle, diamond shape, ellipse etc..Here, can be, the patch of a model is formed One electrode plate of battery；It is also possible to form one piece of whole plate, is then cut into according to the size of the patch battery of different model The unit piece of predetermined shape.
First binder can be added before pressed metal silk screen and electrode active material, in electrode active material to improve pressure The binding force after type between the structural stability and electrode active material and wire mesh of electrode plate is made.
In one embodiment, the wire mesh 12 in electrode plate 1 is two layers.
In this embodiment, compared to single layer structure, the binding force of double layer of metal silk screen and electrode active material is bigger.
In addition, the structural strength of double layer of metal silk screen is higher, this makes the structural strength of electrode plate higher, and stability is more By force.
Certainly, wire mesh can also be that one layer or other numbers of plies, those skilled in the art can be according to actual needs The number of plies of wire mesh is set.
In the embodiments of the present disclosure, the preparation method of SMT is applied in patch battery, this mode enormously simplifies patch The preparation process of piece battery.
In addition, the structural strength of pole piece is high.
In one embodiment, electrode active material 11 is the material for including lithium ion, the through-thickness of electrode plate 1 At least one surface is provided with spacer material layer 2, and spacer material layer 2 is porous layer of the selectivity by lithium ion.Isolated material Layer allows conductive ion to pass through for making positive and negative plate insulate.In this example embodiment, spacer material layer is incorporated in electrode plate Together.When forming patch battery, do not need that separation layer is in addition arranged between positive and negative plate.This setup to paste The assembling of the battery core of piece battery becomes easy.
In addition, the precision of battery core assembling is higher.
In one embodiment, insulation material layer 4 and spacer material layer 2 are ceramic insulating material, 4 He of insulation material layer Spacer material layer 2 is integrated sinter molding.
In this embodiment, ceramic insulating material can be realized the exhausted of insulating effect in first through hole and spacer material layer Edge effect.
In the preparation, firstly, by the raw material of ceramic insulating material on the hole wall of first through hole and electrode plate On surface；Then, it is formed by way of sintering.
During the sintering process, particle microcosmic in material and interparticle contact part are indissoluble.It is porous to be formed Structure.When integrated molding can avoid each self-forming, the insulation of insulation material layer 4 and spacer material layer 2 contact site between the two The problem of intensity difference, has ensured the reliability of insulation performance, improves the durability of pole piece
In addition, being integrally formed the setting steps for simplifying insulation material layer 4 and spacer material layer 2.
For example, insulation material layer and spacer material layer that ceramic insulating material is formed are with a thickness of 5um~15um.Sintering process Using gas pressure sintering (gas pressure sintering, GPS), gas pressure sintering refers to applies scheduled gas during the sintering process The sintering processing of body pressure generally uses N2, pressure limit is in 1~10MPa, and temperature is at 600~650 DEG C, the sintering condition energy Enough decomposition and weightlessness for inhibiting ceramic material at high temperature further promote so as to shorten the sintering time of ceramic insulating material The densification of ceramic insulating material obtains highdensity insulation material layer and spacer material layer.
In one embodiment, ceramic insulating material includes AI2O3、MgO、BeO、CaO、Si3N4With at least one in ZrO Kind.
In this embodiment, ceramic insulating material includes that the one or more of above-mentioned material mix.The insulation of formation Material has preferably insulation performance.
In one embodiment, electrode active material LiCoO2、LiFePO4、LiMn2O4At least one of.
In this embodiment, electrode active material selects the material containing lithium ion, so that above-mentioned solar panel 1 can be used in patch In piece battery.Positive plate as patch battery.
In one embodiment, electrode active material is at least one of graphite and silicon.
In this embodiment, using pole piece made of the mixture of graphite, silicon or both as the negative electrode tab of patch battery.Silicon The addition of material can promote the energy density of patch battery, be mentioned under the premise of not changing original patch battery volume with reaching The electricity capacity of high patch battery.
According to another embodiment of the present disclosure, as shown in Figure 1, providing a kind of production method of SMT patch battery, packet It includes:
Positive plate 1a is made using the production method of the pole piece of above-mentioned SMT patch battery, wherein electrode active material is packet Include the positive electrode active materials of lithium ion；Negative electrode tab 1b is made using the production method of the pole piece of above-mentioned SMT patch battery, wherein Electrode active material is negative electrode active material, and positive electrode active materials and negative electrode active material are as previously described；
Spacer material layer 2 is formed on the surface of the through-thickness of at least one of positive plate 1a and negative electrode tab 1b, In, spacer material layer 2 is porous layer of the selectivity by lithium ion；
The coated electrolyte on the surface of positive plate 1a and negative electrode tab 1b, and/or positive plate 1a and negative electrode tab 1b is impregnated Electrolyte, lithium ion are migrated between positive plate 1a and negative electrode tab 1b by electrolyte；
Positive plate 1a and negative electrode tab 1b are arranged alternately, to form stepped construction, wherein spacer material layer 2 is located at adjacent Positive plate 1a and negative electrode tab 1b between, the portion corresponding with the first through hole 6 of positive plate and the second through-hole 7 of spacer material layer 2 Position is hollow out, and the first through hole 6 of positive plate 1a and the second through-hole 7 of negative electrode tab 1b are opposite, to form first passage, positive plate The first through hole 6 of the second through-hole 7 and negative electrode tab 1b of 1a is opposite, to form second channel；
Stepped construction is pressed together, for example, coating the second binder between positive plate 1a and negative electrode tab 1b.Example Such as, the second binder is inorganic binder.Second binder is silicates binder, phosphoric acid salt binder, aluminate class Binder etc..The cohesive force of above-mentioned binder is strong, and is capable of forming the hole for allowing lithium ion to pass through after hardening.Using heat The mode of pressure solidifies the second binder, so that stepped construction be made to press together；
It is respectively set conductive material 8 in first passage and second channel, conductive material 8 and the conductor in corresponding channel Layer 5 connects.For example, the conductive material 8 in first passage is connect with the conductor layer 5 in the second through-hole 7 of positive plate 1a.Due to Insulation material layer 4 is provided in the first through hole 6 of negative electrode tab 1b, therefore conductive material 8 and negative electrode tab 1b insulate.The conductive material 8 Anode as battery core.
Conductive material 8 in second channel is connect with the conductor layer 5 in the second through-hole of negative electrode tab 1b.Due in positive plate Insulation material layer 4 is provided in the first through hole 6 of 1a, therefore conductive material 8 and positive plate 1a insulate.The conductive material 8 is as electricity The cathode of core.
In this embodiment, according to the positive plate and negative electrode tab of the production method production of the pole piece of above-mentioned SMT patch battery Have the advantages that all of above-mentioned production method.Spacer material layer at least one of positive plate or negative electrode tab surface is to anode Piece and negative electrode tab play the role of insulation.Wherein, isolated material layer-selective is suitable for lithium ion battery by lithium ion.
For example, the pole piece after solidifying needs to be cut into unit piece according to the size of made patch battery.After dicing, It needs to carry out ultrasonic wave water washing to unit piece, to remove the dust of cutting, then unit piece is dried.
Be provided with spacer material layer after, positive plate and/or negative electrode tab surface coating and/or impregnate electrolyte, with Lithium ion in patch battery is set to shift between pole piece.
It needs to press positive plate and negative electrode tab after stacking, so that the fitting of multiple pole pieces is close, be formed with reducing Stepped construction volume, reduce the space occupied.
Conductive material is set in first passage and second channel, so as to the second through-hole being connected between positive plate, is made multiple Positive plate can be connected；And the second through-hole between connection negative electrode tab, so that multiple negative electrode tabs is connected.
In one embodiment, as shown in figure 3, the wire mesh 12 in electrode plate 1 is two layers.
In this embodiment, compared to single layer structure, the binding force of double layer of metal silk screen and electrode active material is bigger.
In addition, the structural strength of double layer of metal silk screen is higher, this makes the structural strength of electrode plate higher, and stability is more By force.
Certainly, wire mesh can also be that one layer or other numbers of plies, those skilled in the art can be according to actual needs The number of plies of wire mesh is set.
In one embodiment, insulation material layer 4 and spacer material layer 2 are ceramic insulating material.4 He of insulation material layer Spacer material layer 2 is integrated sinter molding.
In this embodiment, ceramic insulating material can be realized the exhausted of insulating effect in first through hole and spacer material layer Edge effect.
In the preparation, firstly, by the raw material of ceramic insulating material on the hole wall of first through hole and electrode plate On surface；Then, it is formed by way of sintering.
During the sintering process, particle microcosmic in material and interparticle contact part are indissoluble.It is porous to be formed Structure.When integrated molding can avoid each self-forming, the insulation of insulation material layer 4 and spacer material layer 2 contact site between the two The problem of intensity difference, has ensured the reliability of insulation performance, improves the durability of pole piece.
In addition, being integrally formed the setting steps for simplifying insulation material layer 4 and spacer material layer 2.
For example, insulation material layer and spacer material layer that ceramic insulating material is formed are with a thickness of 5um~15um.Sintering process Using gas pressure sintering (gas pressure sintering, GPS).Gas pressure sintering refers to applies scheduled gas during the sintering process The sintering processing of body pressure.For example, generally using N2, pressure limit is in 1~10MPa, and temperature is at 600~650 DEG C.The sintered bar Part is able to suppress the decomposition and weightlessness of ceramic material under high temperature, so as to shorten the sintering time of ceramic insulating material, further promotees Into the densification of ceramic insulating material, highdensity insulation material layer and spacer material layer are obtained.
In one embodiment, ceramic insulating material includes AI2O3、MgO、BeO、CaO、Si3N4With at least one in ZrO Kind.
In this embodiment, the material of selection can be one of above-mentioned material or a variety of mixing.The ceramics of formation Insulating materials has good insulating capacity, and porous structure of the selectivity by lithium ion is capable of forming after sinter molding.
In one embodiment, electrode active material LiCoO2、LiFePO4、LiMn2O4At least one of.
In this embodiment, electrode active material selects the material containing lithium ion, so that above-mentioned electrode plate can be used in patch Positive plate in piece battery, as patch battery.
In one embodiment, electrode active material is at least one of graphite and silicon.
In this embodiment, using pole piece made of the mixture of graphite, silicon or both as the negative electrode tab of patch battery.Silicon The addition of material can promote the energy density of patch battery, be mentioned under the premise of not changing original patch battery volume with reaching The electricity capacity of high patch battery.
In one embodiment, electrolyte includes polyethylene oxide.
In this embodiment, lithium ion is migrated between positive plate and negative electrode tab by electrolyte.Polyethylene oxide has The performance of good conducting lithium ions.Migrate lithium ion in patch battery along electric field under the action of electric field.
In one embodiment, electrolyte includes sulfide.
In this embodiment, sulfide has the performance of good conducting lithium ions.Make lithium ion under the action of electric field It is migrated in patch battery along electric field.
In one embodiment, sulfide includes thio-LiSiCON, LiGPS, LiSnPS, LiSiPS, Li2S-P2S5、 Li2S-SiS2And Li2S-B2S3At least one of.
In this embodiment, lithium ion can migrate in above-mentioned sulfide.
In one embodiment, stepped construction is pressed together by way of hot pressing.
In this embodiment, firstly, coating the second binder between positive plate, negative electrode tab.Then, pass through the side of hot pressing Second binder is solidified, and pressed to stepped construction by formula.
For example, the temperature of hot pressing is 150~200 DEG C, pressure is 2~3MPa.Under this condition, the second binder does not have to open It splits.After hardening, the second binder and positive plate, negative electrode tab are firmly combined.
In one embodiment, in the step of conductive material 8 are respectively set in first passage and second channel, comprising:
Metallic slurry is injected into first passage and second channel；
Metallic slurry is solidified by high temperature reflux.
In this embodiment, metallic slurry has mobility, can be by injection first passage and second channel.However, Since the viscosity of metallic slurry is big, poor fluidity, therefore the contact of metallic slurry and the conductor layer in first passage and second channel Area is small, is unfavorable for the conducting with conductor layer.
High temperature reflux refers to the mode making the metal molten in metallic slurry at liquid by way of high temperature.It is being converted to After liquid, the good fluidity of metal can be with the close comprehensive engagement of conductor layer.High temperature reflux can make metallic slurry and second It is fused between metallic conductor in through-hole 7 together, optimizes electric conductivity.
In one embodiment, metallic slurry is tin slurry or silver paste.
In this embodiment, tin slurry and silver paste all have good electric conductivity.
In addition, the fusing point of both materials is low, this is easier the operation of high temperature reflux.
In one embodiment, as shown in figure 4, the step of conductive material 8 is respectively set in first passage and second channel After rapid, further includes:
Stepped construction is placed into mold；
Insulating protective layer 10 is molded outside stepped construction.
In this embodiment, the stepped construction for setting up conductive material is the battery core of battery, and one layer is coated in battery core Insulating materials separates battery core and external insulation, that is, completes the production of patch battery, generally, welds bottom in battery core bottom Seat 9, then the battery core being welded and pedestal are coated in insulating protective layer together.For example, two conductive materials 8 of battery core are divided Do not weld together with pin 81 corresponding on pedestal 9, realizes electrical connection.81 connection of pin electricity in battery core and pedestal 9 is also It needs to connect PTC protection location 91 between battery core and pedestal, to protect safety of the patch battery in charge and discharge process.Then Battery core and pedestal 9 are placed into mold together.For example, forming insulating protective layer outside battery core using modes such as injection molding, drop glue.
For example, insulating protective layer is rubber, plastic or other material.Preferably, insulation protection layer material is epoxy resin.Epoxy Resin has good insulating properties and plasticity.
After patch battery completes, chemical conversion and partial volume are carried out to patch battery in formation cabinet and grading system respectively, So that patch battery charges.
Finally, carrying out the test of internal resistance and voltage, to patch battery to measure the performance of battery.
According to another embodiment of the present disclosure, a kind of SMT patch battery, including battery core are provided, battery core includes above-mentioned Electrode active material is LiCoO2、LiFePO4、LiMn2O4At least one of pole piece, above-mentioned electrode active material be graphite Pole piece and the spacer material layer 2 that is arranged between two pole pieces；
Defining electrode active material is LiCoO2, LiFePO4、LiMn2O4At least one of pole piece be positive plate 1a, Electrode active material is that the pole piece of graphite is that negative electrode tab 1b, positive plate 1a and negative electrode tab 1b are arranged alternately, spacer material layer 2 with The first through hole 6 of positive plate 1a and the corresponding position of the second through-hole 7 are hollow out, the first through hole 6 and negative electrode tab of positive plate 1a The second through-hole 7 of 1b is opposite, to form first passage, 6 phase of first through hole of the second through-hole 7 and negative electrode tab 1b of positive plate 1a It is right, to form second channel；Conductive material 8 is respectively arranged in first passage and second channel.
In this embodiment, positive plate and negative electrode tab all have advantage brought by its production method.
It is respectively set conductive material 8 in first passage and second channel, conductive material 8 and the conductor in corresponding channel Layer 5 connects.For example, the conductive material 8 in first passage is connect with the conductor layer 5 in the second through-hole 7 of positive plate 1a.Due to Insulation material layer 4 is provided in the first through hole 6 of negative electrode tab 1b, therefore conductive material 8 and negative electrode tab 1b insulate.The conductive material 8 Anode as battery core.
Conductive material 8 in second channel is connect with the conductor layer 5 in the second through-hole of negative electrode tab 1b.Due in positive plate Insulation material layer 4 is provided in the first through hole 6 of 1a, therefore conductive material 8 and positive plate 1a insulate.The conductive material 8 is as electricity The cathode of core.
For example, pole piece needs to be cut into unit piece according to the size of made patch battery, after dicing, need to list First piece carries out ultrasonic wave water washing, to remove the dust of cutting, then dries to unit piece.
Hollow out is provided on spacer material layer, such conductive material can make the first through hole in same channel and second Through-hole connection, so that conductive material can smoothly be electrically connected the pole piece of homopolarity.
In one embodiment, the wire mesh 12 in electrode plate 1 is two layers.
In this embodiment, compared to single layer structure, the binding force of double layer of metal silk screen and electrode active material is bigger.
In addition, the structural strength of double layer of metal silk screen is higher, this makes the structural strength of electrode plate higher, and stability is more By force.
Certainly, wire mesh can also be that one layer or other numbers of plies, those skilled in the art can be according to actual needs The number of plies of wire mesh is set.
In one embodiment, insulation material layer 4 and spacer material layer 2 are ceramic insulating material, 4 He of insulation material layer Spacer material layer 2 is integrated sinter molding.
In this embodiment, ceramic insulating material can be realized the exhausted of insulating effect in first through hole and spacer material layer Edge effect.
In the preparation, firstly, by the raw material of ceramic insulating material on the hole wall of first through hole and electrode plate On surface；Then, it is formed by way of sintering.
During the sintering process, particle microcosmic in material and interparticle contact part are indissoluble.It is porous to be formed Structure.When integrated molding can avoid each self-forming, the insulation of insulation material layer 4 and spacer material layer 2 contact site between the two The problem of intensity difference, has ensured the reliability of insulation performance, improves the durability of pole piece.
In addition, being integrally formed the setting steps for simplifying insulation material layer 4 and spacer material layer 2.
For example, insulation material layer and spacer material layer that ceramic insulating material is formed are with a thickness of 5um~15um.Sintering process Using gas pressure sintering (gas pressure sintering, GPS), gas pressure sintering refers to applies scheduled gas during the sintering process Body pressure, for example, generally using N2, pressure limit is in 1~10MPa, and at 600~650 DEG C, which is able to suppress temperature The decomposition and weightlessness of ceramic material at high temperature further promotes ceramics absolutely so as to shorten the sintering time of ceramic insulating material The densification of edge material obtains highdensity insulation material layer and spacer material layer.
In one embodiment, ceramic insulating material includes AI2O3、MgO、BeO、CaO、Si3N4With at least one in ZrO Kind.
In this embodiment, the material of selection can be one of above-mentioned material or a variety of mixing.The ceramics of formation Insulating materials has good insulating capacity, and porous structure of the selectivity by lithium ion is capable of forming after sinter molding.
In one embodiment, further include with the combined electrolyte of battery core, electrolyte includes polyethylene oxide.
In this embodiment, lithium ion is migrated between positive plate and negative electrode tab by electrolyte, and polyethylene oxide has The performance of good conducting lithium ions.Migrate lithium ion in patch battery along electric field under the action of electric field.
In one embodiment, further include with the combined electrolyte of battery core, electrolyte includes sulfide.
In this embodiment, sulfide has the performance of good conducting lithium ions.Make lithium ion under the action of electric field It is migrated in patch battery along electric field.
In one embodiment, sulfide includes thio-LiSiCON, LiGPS, LiSnPS, LiSiPS, Li2S-P2S5、 Li2S-SiS2And Li2S-B2S3At least one of.
In this embodiment, lithium ion can migrate in above-mentioned sulfide.
In one embodiment, stepped construction is laminated together by way of hot pressing.
In this embodiment, firstly, coating the second binder between positive plate, negative electrode tab.Then, pass through the side of hot pressing Second binder is solidified, and pressed to stepped construction by formula.
For example, the temperature of hot pressing is 150~200 DEG C, pressure is 2~3MPa.Under this condition, the second binder does not have to open It splits.After hardening, the second binder and positive plate, negative electrode tab are firmly combined.
In one embodiment, conductive material 8 is solidified by metallic slurry high temperature reflux.
In this embodiment, metallic slurry has mobility, can be by injection first passage and second channel.However, Since the viscosity of metallic slurry is big, poor fluidity, therefore the contact of metallic slurry and the conductor layer in first passage and second channel Area is small, is unfavorable for the conducting with conductor layer.
High temperature reflux refers to the mode making the metal molten in metallic slurry at liquid by way of high temperature.It is being converted to After liquid, the good fluidity of metal can be fused to together with the conductor layer in the second through-hole 7.In one embodiment, golden Belonging to slurry is tin slurry or silver paste.
In this embodiment, tin slurry and silver paste all have good electric conductivity.
In addition, the fusing point of both materials is low, this is easier the operation of high temperature reflux.
In one embodiment, insulating protective layer 10 is formed with as shown in figure 4, being molded outside battery core.
In this embodiment, one layer of insulating materials is coated in battery core, is separated battery core and external insulation, that is, is completed electricity The production in pond generally welds pedestal 9 in battery core bottom, then be coated in insulation material protection together.For example, by the two of battery core A conductive material 8 welds together with pin 81 corresponding on pedestal 9 respectively, realizes electrical connection.And the conductive material 8 of battery core It also needs to realize by PTC protection location 91 with the pin 81 of pedestal and be electrically connected, to protect the peace of patch battery charge and discharge process Entirely.Then being placed into mold together battery core and pedestal 9.For example, being formed outside battery core absolutely using modes such as injection molding, drop glue Edge protective layer 10.
For example, insulating protective layer is rubber, plastic or other material.Preferably, insulation protection layer material is epoxy resin.Epoxy Resin has good insulating properties and plasticity.
After patch battery completes, respectively in formation cabinet and grading system to patch battery carry out chemical conversion and partial volume with Charge patch battery.
Finally, carrying out the test of internal resistance and voltage, to patch battery to measure the performance of battery.
Compared to existing technique, the manufacture craft of patch battery and pole piece in above embodiments is very simple, made The performance of pole piece is greatly improved in the patch battery and patch battery obtained.
Although some specific embodiments of the invention are described in detail by example, the skill of this field Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair Bright range is defined by the following claims.

Claims (10)

1. a kind of production method of the pole piece of SMT patch battery characterized by comprising
Electrode active material and first binder are mixed evenly, to form slurry, on a wire mesh by slurry attachment, And it is pressed into electrode plate；
The electrode active material is solidified；
First through hole is opened up on the electrode plate after hardening, insulation material layer is set on the inner wall of the first through hole；
The second through-hole is opened up on electrode plate, and conductor layer is set on the inner wall of second through-hole.
2. the production method of the pole piece of SMT patch battery according to claim 1, which is characterized in that the electrode activity Material is the material for including lithium ion, at least one surface of the through-thickness of the electrode plate is provided with isolated material Layer, the spacer material layer are porous layer of the selectivity by lithium ion.
3. a kind of pole piece of SMT patch battery, which is characterized in that including electrode plate, the electrode plate includes wire mesh and attached The electrode active material on the wire mesh, the electrode active material be pressed form and be solidificated in the wire On the net, first through hole and the second through-hole are provided on the electrode plate；The inner wall of the first through hole is provided with insulating materials Layer, the inner wall of second through-hole are provided with conductor layer.
4. pole piece according to claim 3, which is characterized in that the electrode active material is the material for including lithium ion, At least one surface of the through-thickness of the electrode plate is provided with spacer material layer, the spacer material layer is selectivity Pass through the porous layer of lithium ion.
5. pole piece according to claim 3, which is characterized in that the electrode active material is LiCoO2、LiFePO4、 LiMn2O4At least one of.
6. pole piece according to claim 3, which is characterized in that the electrode active material is at least one in graphite and silicon Kind.
7. a kind of production method of SMT patch battery characterized by comprising
Using production method as described in claim 1 make positive plate, wherein the electrode active material be include lithium ion Positive electrode active materials；Negative electrode tab is made using production method as described in claim 1, wherein electrode active material is negative Pole active material；
Spacer material layer is formed on the surface of the through-thickness of at least one of the positive plate and the negative electrode tab, In, the spacer material layer is porous layer of the selectivity by lithium ion；
The coated electrolyte on the surface of the positive plate and negative electrode tab, and/or the positive plate and the negative electrode tab are impregnated Electrolyte；
The positive plate and the negative electrode tab are arranged alternately, to form stepped construction, wherein the spacer material layer is located at phase Between the adjacent positive plate and the negative electrode tab, the spacer material layer leads to the first through hole of the positive plate and second The corresponding position in hole is hollow out, and the first through hole of the positive plate and second through-hole of the negative electrode tab are opposite, To form first passage, second through-hole of the positive plate is opposite with the first through hole of the negative electrode tab, to be formed Second channel；
The stepped construction is pressed together；
Be respectively set conductive material in the first passage and the second channel, the conductive material in corresponding channel Conductor layer connection.
8. the production method of SMT patch battery according to claim 7, which is characterized in that in the first passage and institute After stating the step of conductive material is respectively set in second channel, further includes:
The stepped construction is placed into mold；
Insulating protective layer is molded outside the stepped construction.
9. a kind of SMT patch battery, which is characterized in that including battery core, the battery core include pole piece as claimed in claim 5, Pole piece as claimed in claim 6 and the spacer material layer being arranged between two pole pieces；
Defining pole piece as claimed in claim 5 is positive plate, and pole piece as claimed in claim 6 is negative electrode tab, the anode Piece and the negative electrode tab are arranged alternately, the spacer material layer it is corresponding with the first through hole of the positive plate and the second through-hole Position is hollow out, and the first through hole of the positive plate and second through-hole of the negative electrode tab are opposite, to form Second through-hole in one channel, the positive plate is opposite with the first through hole of the negative electrode tab, to form second channel； Be respectively arranged with conductive material in the first passage and the second channel, the conductive material in corresponding channel Conductor layer connection.
10. SMT patch battery according to claim 9, which is characterized in that injection molding is formed with insulation and protects outside the battery core Sheath.
CN201910548733.1A 2019-06-24 2019-06-24 SMT (surface mount technology) chip battery and pole piece and manufacturing method of SMT chip battery and pole piece Active CN110247022B (en)

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