CN110010841B - Manufacturing process of positive and negative electrode plates of battery cell and battery cell electrode plate - Google Patents
Manufacturing process of positive and negative electrode plates of battery cell and battery cell electrode plate Download PDFInfo
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- CN110010841B CN110010841B CN201910233691.2A CN201910233691A CN110010841B CN 110010841 B CN110010841 B CN 110010841B CN 201910233691 A CN201910233691 A CN 201910233691A CN 110010841 B CN110010841 B CN 110010841B
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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
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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
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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
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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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
Abstract
The application provides a manufacturing process of a positive pole piece and a negative pole piece of an electric core and the electric core pole piece, a positive pole slurry containing frame is obtained by utilizing preset positive pole foil water to drip and freeze-solidify one side of an isolating membrane along the edge, and a negative pole slurry containing frame is obtained by utilizing preset negative pole foil water to drip and freeze-solidify the other side of the isolating membrane along the edge; coating the positive electrode slurry in the positive electrode slurry containing frame and coating the negative electrode slurry in the negative electrode slurry containing frame; drying the coated isolating membrane; cold pressing the dried isolating membrane to determine the thickness and density of the anode slurry and the cathode slurry on the isolating membrane; and attaching a positive metal foil to one surface of the isolating film with the positive slurry, and attaching a negative metal foil to one surface of the isolating film with the negative slurry to obtain the battery pole piece, so that the technical problems of high internal resistance and low electric capacity of the battery pole piece caused by small positive and negative slurry capacity and large isolating film of the battery pole piece are solved.
Description
Technical Field
The application relates to the field of battery cells, in particular to a manufacturing process of positive and negative electrode plates of a battery cell.
Background
At present, the battery core pole piece is manufactured by respectively coating positive and negative electrode slurry on two sides of a barrier film, and the positive and negative electrode slurry has a wider distance from the edge of the barrier film so as to prevent the positive and negative electrode slurry from overflowing from the edge of the barrier film, so that the positive and negative electrode slurry of the battery core pole piece has small capacity and the barrier film has large capacity, which results in high internal resistance and low electric capacity of the battery core pole piece.
Disclosure of Invention
The application aims to provide a manufacturing process of positive and negative electrode plates of a battery core and the battery core electrode plates, and aims to solve the technical problems of high internal resistance and low capacitance of the battery core electrode plates caused by small positive and negative electrode slurry capacity and large isolating membranes of the battery core electrode plates.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a manufacturing process of positive and negative electrode plates of a battery cell, which comprises the following steps:
dripping preset anode foil water on one side of the isolating membrane along the edge and freezing and solidifying to obtain an anode slurry containing frame, and dripping preset cathode foil water on the other side of the isolating membrane along the edge and freezing and solidifying to obtain a cathode slurry containing frame;
coating positive electrode slurry in the positive electrode slurry containing frame and coating negative electrode slurry in the negative electrode slurry containing frame;
drying the coated isolating membrane;
cold pressing the dried isolating membrane to determine the thickness and density of the anode slurry and the cathode slurry on the isolating membrane;
and attaching a positive metal foil to one surface of the isolating film with the positive slurry, and attaching a negative metal foil to one surface of the isolating film with the negative slurry to obtain the battery core pole piece.
Further, the positive electrode slurry containing frame and the negative electrode slurry containing frame have a preset distance from the edge of the separation film.
Further, the preset distance is less than 0.1 mm.
Further, the preparation method of the cathode foil water or the anode foil water comprises the following steps:
melting at high temperature, namely placing the anode metal foil or the cathode metal foil into a high-temperature box for high-temperature treatment to melt the anode metal foil or the cathode metal foil to obtain anode foil water or cathode foil water;
adding crushed aggregates, and adding a set amount of crushed aggregates into the positive electrode foil water or the negative electrode foil water;
and preparing at constant temperature, namely performing constant temperature treatment on the cathode foil water or the anode foil water after the crushed materials are added so as to keep the cathode foil water or the anode foil water in a liquid state.
Further, the crushed materials comprise wood powder, insulating glue solution or insulating oil.
Further, the step of manufacturing the cell pole piece comprises the following steps:
and testing, namely testing whether the anode slurry and the cathode slurry in the electric chip are interacted by adopting electric induction equipment.
Further, the step of applying the cathode slurry into the cathode slurry containing frame and the step of applying the anode slurry into the anode slurry containing frame comprise:
the preparation method comprises the steps of mixing a binder, a conductive agent, a solvent and a positive active material according to a first preset mass proportion to obtain positive slurry, and mixing the binder, the conductive agent, the solvent and a negative active material according to a second preset mass proportion to obtain negative slurry.
Further, the first preset mass ratio among the adhesive, the conductive agent, the solvent and the positive electrode active material is as follows: 0.05:0.3:0.05: 0.6.
further, the second preset mass ratio among the adhesive, the conductive agent, the solvent and the negative electrode active material is as follows: 0.05:0.2:0.05: 0.7.
the application also provides a battery cell pole piece which is manufactured according to the manufacturing process of the battery cell positive and negative pole pieces and comprises an isolating membrane, a positive pole slurry containing frame, a negative pole slurry containing frame, positive pole slurry, negative pole slurry, a positive pole metal foil and a negative pole metal foil;
the positive electrode slurry containing frame and the negative electrode slurry containing frame are respectively arranged on two sides of the isolating membrane;
the anode slurry is arranged in the anode slurry containing frame on the isolating membrane, and the cathode slurry is arranged in the cathode slurry containing frame on the isolating membrane;
the anode metal foil is connected with the anode slurry, and the cathode metal foil is connected with the cathode slurry.
The application provides a manufacturing process of positive and negative electrode plates of a battery cell and the battery cell electrode plates, which have the following beneficial effects:
dripping preset anode foil water on one side of the isolating membrane along the edge and freezing and solidifying to obtain an anode slurry containing frame, and dripping preset cathode foil water on the other side of the isolating membrane along the edge and freezing and solidifying to obtain a cathode slurry containing frame; coating the positive electrode slurry in the positive electrode slurry containing frame and coating the negative electrode slurry in the negative electrode slurry containing frame; drying the coated isolating membrane; cold pressing the dried isolating membrane to determine the thickness and density of the isolating membrane; and attaching a positive metal foil to one surface of the isolating film with the positive slurry, and attaching a negative metal foil to one surface of the isolating film with the negative slurry to obtain the battery pole piece, so that the technical problems of high internal resistance and low electric capacity of the battery pole piece caused by small positive and negative slurry capacity and large isolating film of the battery pole piece are solved.
Drawings
Fig. 1 is a schematic step diagram of a manufacturing process of positive and negative electrode plates of a battery cell in an embodiment of the application;
FIG. 2 is a schematic structural diagram of a film-making structure according to an embodiment of the present disclosure;
FIG. 3 is a top view of a barrier film according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a cell pole piece in an embodiment of the present application.
The implementation, functional features and advantages of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a schematic diagram of steps of a manufacturing process of positive and negative electrode plates of a battery cell provided by the present application includes:
s1, dripping preset positive foil water along the edge on one side of the separator 03 and freezing and solidifying to obtain a positive slurry containing frame 033, and dripping preset negative foil water along the edge on the other side of the separator 03 and freezing and solidifying to obtain a negative slurry 05 containing frame;
the step S1 is a process of manufacturing the isolation film 03, and the present application provides a film manufacturing structure (refer to fig. 2, which is a schematic structural diagram of the film manufacturing structure), including a frame, where the frame includes an upper frame 01 and a lower frame 02, and the isolation film 03 is clamped by the upper frame 01 and the lower frame 02, and a specific clamping position is from a position 0.1mm away from an edge of the isolation film 03 to the edge of the isolation film 03, the frame is disposed at one end of a rotating shaft, which can be taken out and mounted, and the other end of the rotating shaft is connected to a driver, and further, the driver is connected to a controller.
In one embodiment, by artificial instillation, specifically: the worker drips the positive pole paper tinsel water of presetting along the border of upper frame 01, after dripping, through the forced air cooling, natural cooling or put into the freezer and carry out the freeze-cure of positive pole paper tinsel water, above-mentioned "put into the freezer for" will press from both sides the frame that presss from both sides tight barrier film 03 and take out and put into the freezer, so that positive pole paper tinsel water freeze-cure, can form the positive pole paper tinsel body after positive pole paper tinsel water freeze-cure, enclose the border at barrier film 03 through the positive pole paper tinsel body and hold frame 033 in order to form positive pole thick liquids, this positive pole thick liquids hold frame 033 can fix on barrier film 03 and be the rectangle, because upper frame 01 shelters from positive pole paper tinsel water when dripping, the worker of being convenient for has still guaranteed to have 0.1 mm's distance with barrier film 03 edge when dripping. Subsequently, the worker sends a command to the driver through the controller, so that the driver drives the rotating shaft to rotate, the frame is turned over, the other side of the isolating membrane 03 is dripped along the inner frame of the lower frame 02 by the same method, and the negative foil water is frozen and solidified.
S2, coating the positive electrode slurry 04 in the positive electrode slurry containing frame 033, and coating the negative electrode slurry 05 in the negative electrode slurry 05 containing frame;
referring to fig. 3, which is a plan view of the separator 03, it can be seen from the above that a positive electrode paste receiving frame 033 and a negative electrode paste receiving frame 05, which are hollow rectangles, are fixed to the edge of the separator 03. This step is a process of coating the positive electrode slurry 04 and the negative electrode slurry 05 on both sides of the separator 03.
The method specifically comprises the following steps: the worker sends an instruction to the driver through the controller, the driver controls the rotating shaft to rotate so as to enable the frame to be erected, then the worker coats the positive electrode slurry 04 and the negative electrode slurry 05 in the positive electrode slurry containing frame 033 and the negative electrode slurry 05 containing frame of the isolating membrane 03 respectively, as can be seen from the figure, the size of the position 031 at the edge of the isolating membrane 03 is 0.1mm, and the middle part 032 of the isolating membrane 03 is used for dripping the metal foil water and the positive electrode slurry 04/negative electrode slurry 05.
S3, drying the coated separator 03;
in order to prevent the anode and cathode slurry 05 from falling off from the isolating membrane 03, an operator performs manual hot air drying on the isolating membrane 03 coated with the anode and cathode slurry 05 on the frame, so that the hot air drying process of the coated isolating membrane 03 is realized.
As can be seen from the above, the worker can directly dry the frame with hot air after the worker applies the positive electrode paste 04 and the negative electrode paste 05 in the "standing" state.
S4, performing cold pressing on the dried isolating membrane 03 to determine the thickness and density of the positive electrode slurry 04 and the negative electrode slurry 05 on the isolating membrane 03;
as can be seen from the step S3, when the frame is in the standing state, the separator 03 disposed on the frame is cold-pressed by the pressing device to obtain a specific thickness and density.
Specifically, the thickness of the cold-pressed isolating membrane 03 is 0.1 cm-0.3 cm, the materials and the proportions for preparing the anode slurry 04 and the cathode slurry 05 are different, the densities of all the anode surfaces and the cathode surfaces are different, the anode surface is the isolating membrane 03 surface coated with the anode slurry 04, the cathode surface is the isolating membrane 03 surface coated with the cathode slurry 05, and the password of the anode surface of the isolating membrane 03 is 20-30 mg/cm2The password of the negative electrode surface of the isolating membrane 03 is 10-20 mg/cm2。
And S5, attaching a positive metal foil to one surface of the isolating film 03 with the positive slurry 04, and attaching a negative metal foil to one surface of the isolating film 03 with the negative slurry 05 to obtain the battery core pole piece.
After cold pressing is finished, workers respectively attach the metal foils to the two surfaces of the isolating film 03 to prevent the positive electrode slurry 04 and the negative electrode slurry 05 from falling off. The metal foil includes a copper foil or an aluminum foil.
Specifically, the positive metal foil is an aluminum foil, and the negative metal foil is a copper foil.
In summary, a preset positive electrode foil water is dripped along the edge of one side of the isolating membrane 03 and is frozen and solidified to obtain a positive electrode slurry containing frame 033, and a preset negative electrode foil water is dripped along the edge of the other side of the isolating membrane 03 and is frozen and solidified to obtain a negative electrode slurry 05 containing frame; coating the positive electrode slurry 04 in a positive electrode slurry containing frame 033 and coating the negative electrode slurry 05 in a negative electrode slurry 05 containing frame; drying the coated isolating membrane 03; cold pressing the dried isolating membrane 03 to determine the thickness and density of the isolating membrane 03; and attaching a positive metal foil to one surface of the isolating film 03 with the positive slurry 04 and attaching a negative metal foil to one surface of the isolating film 03 with the negative slurry 05 to obtain the battery pole piece, so that the technical problems of high internal resistance and low capacitance of the battery pole piece caused by small capacity of the positive slurry 05 and the negative slurry 05 of the battery pole piece and large isolating film 03 are solved.
In one embodiment, the positive electrode paste receiving frame 033 and the negative electrode paste 05 receiving frame have a predetermined distance from the edge of the separator 03.
The preset distance is less than 0.1 mm. From the above, the edge position of the isolating membrane 03 is clamped to the position 0.1mm away from the edge of the isolating membrane 03 through the upper frame 01 and the lower frame 02, so that a worker is shielded by the frame to drip positive foil water or negative foil water in the area, and the positive paste 04 or the negative paste 05 is isolated through the positive foil water or the negative foil water, so that more positive paste 04 and more negative paste 05 can be coated on the isolating membrane 03, and the electric capacity is improved, thereby realizing the effects of small pole piece, large capacity and specific energy improvement.
In one embodiment, a method for preparing cathode foil water or anode foil water comprises:
melting at high temperature, namely placing the positive metal foil or the negative metal foil into a high-temperature box for high-temperature treatment to melt the positive metal foil or the negative metal foil to obtain positive foil water or negative foil water;
adding crushed aggregates, namely adding the crushed aggregates with a set amount into the positive foil water or the negative foil water;
and (4) constant temperature preparation, namely performing constant temperature treatment on the cathode foil water or the anode foil water after the crushed materials are added so as to keep the cathode foil water or the anode foil water in a liquid state.
An operator puts the positive metal foil or the negative metal foil into a high-temperature box for high-temperature heating treatment, when the temperature of the high-temperature box is higher than the melting point of the positive metal foil or the negative metal foil, the positive metal foil or the negative metal foil is dissolved into metal foil water, specifically, the positive metal foil is an aluminum sheet, the negative metal aluminum sheet is a copper sheet, and aluminum water and copper water are obtained after the dissolution; subsequently, the worker transfers the anode foil water or the cathode foil water to a correspondingly accommodated container, and adds a specified amount of crushed materials into the container, wherein the ratio of the crushed materials to the foil water is 1 to 9, and the crushed materials comprise any one or more of wood powder, insulating glue solution or insulating oil; after the worker adds the crushed aggregates, the worker puts the container into a high-temperature box for constant-temperature treatment to ensure that the metal foil water is kept in a liquid state.
In one embodiment, the step of making the motor chip is followed by:
and testing, namely testing whether the positive electrode slurry 04 and the negative electrode slurry 05 in the chip electrode plate interact or not by adopting electric induction equipment.
The step is a process of testing the battery core pole piece, and specifically, the application provides an electric induction device, wherein the electric induction device comprises a positive discharging patch, a negative discharging patch and a discharger, and the positive discharging patch and the negative discharging patch are respectively electrically connected with the discharger; the worker is with anodal discharge paster laminating in the anodal face of electric core pole piece, laminate the negative pole face of electric core pole piece with the negative pole paster of discharging, gather the electric energy in the electric core pole piece through the discharger afterwards in order to discharge, and judge whether positive pole thick liquids 04 interact with negative pole thick liquids 05, if, then electric core pole piece is normal, wherein anodal discharge paster and negative pole paster of discharging are discharge coil, produce corresponding magnetic field through discharge coil and the inside positive and negative electrode thick liquids of electric core, with the electric energy of drawing electric core through this magnetic field.
In one embodiment, the steps of applying positive slurry 04 into a positive slurry containment frame 033 and applying negative slurry 05 into a negative slurry 05 containment frame preceded by:
the method comprises the steps of mixing a binder, a conductive agent, a solvent and a positive electrode active material according to a first preset mass proportion to obtain positive electrode slurry 04, and mixing the binder, the conductive agent, the solvent and a negative electrode active material according to a second preset mass proportion to obtain negative electrode slurry 05.
The solvent is obtained by high-frequency mixing PVDF polyvinylidene fluoride and deionized water according to the mass ratio of 0.3:0.7, and the first preset mass ratio of the adhesive, the conductive agent, the solvent and the positive active material is 0.05:0.3:0.05: 0.6; the second preset mass ratio of the adhesive, the conductive agent, the solvent and the negative electrode active material is 0.05:0.2:0.05: 0.7.
Carrying out high-frequency vibration mixing on the adhesive, the conductive agent, the solvent and the positive active substance according to a first preset mass ratio to obtain positive slurry 04; and (3) carrying out high-frequency vibration mixing on the adhesive, the conductive agent, the solvent and the negative electrode active material according to a second preset mass ratio to obtain negative electrode slurry 05. Thereby obtaining a positive electrode slurry 04 and a negative electrode slurry 05.
Referring to fig. 4, a schematic structural diagram of a cell pole piece provided in the present application is a cell pole piece manufactured according to the above-mentioned manufacturing process of a positive pole piece and a negative pole piece of a cell, and includes a separator 03, a positive pole slurry containing frame 033, a negative pole slurry 05 containing frame, a positive pole slurry 04, a negative pole slurry 05, a positive pole metal foil 06, and a negative pole metal foil 07;
the positive electrode slurry containing frame 033 and the negative electrode slurry containing frame 05 are respectively arranged on two sides of the isolating membrane 03;
the positive electrode slurry 04 is arranged in a positive electrode slurry containing frame 033 on the isolating membrane 03, and the negative electrode slurry 05 is arranged in a negative electrode slurry 05 containing frame on the isolating membrane 03;
the positive electrode metal foil 06 is connected with the positive electrode slurry 04, and the negative electrode metal foil 07 is connected with the negative electrode slurry 05.
Specifically, the positive electrode slurry containing frame 033 is a containing frame formed by melting aluminum foil into molten aluminum, dripping the molten aluminum onto one surface of the isolating membrane 03 by an operator, and freezing and solidifying the molten aluminum; the fabrication of the negative electrode slurry 05 containing frame is the same as that of the positive electrode slurry containing frame 033 and therefore will not be described in detail, but the material of the negative electrode slurry 05 containing frame is copper foil.
The positive metal foil 06 is an aluminum foil, and the negative metal copper sheet 07 is a copper foil.
Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A manufacturing process of positive and negative electrode plates of a battery core is characterized by comprising the following steps:
dripping preset anode foil water on one side of the isolating membrane along the edge and freezing and solidifying to obtain an anode slurry containing frame, and dripping preset cathode foil water on the other side of the isolating membrane along the edge and freezing and solidifying to obtain a cathode slurry containing frame;
coating positive electrode slurry in the positive electrode slurry containing frame and coating negative electrode slurry in the negative electrode slurry containing frame;
drying the coated isolating membrane;
cold pressing the dried isolating membrane to determine the thickness and density of the positive electrode slurry and the negative electrode slurry on the isolating membrane;
and attaching a positive metal foil to one surface of the isolating film with the positive slurry, and attaching a negative metal foil to one surface of the isolating film with the negative slurry to obtain the battery core pole piece.
2. The manufacturing process of the positive and negative electrode plates of the battery core of claim 1, wherein the positive paste containing frame and the negative paste containing frame have a preset distance from the edge of the isolating membrane.
3. The manufacturing process of the positive and negative electrode plates of the battery cell of claim 2, wherein the preset distance is less than 0.1 mm.
4. The manufacturing process of the positive and negative electrode plates of the battery core according to claim 1, wherein the preparation method of the positive foil water or the negative foil water comprises the following steps:
melting at high temperature, namely placing the positive metal foil or the negative metal foil into a high-temperature box for high-temperature treatment so as to melt the positive metal foil or the negative metal foil and obtain the positive foil water or the negative foil water;
adding crushed aggregates, and adding a set amount of crushed aggregates into the positive electrode foil water or the negative electrode foil water; the crushed materials comprise wood powder, insulating glue solution or insulating oil;
and preparing at constant temperature, namely performing constant temperature treatment on the cathode foil water or the anode foil water after the crushed materials are added so as to keep the cathode foil water or the anode foil water in a liquid state.
5. The process of claim 1, wherein the step of attaching a positive metal foil to the surface of the separator film having the positive paste and attaching a negative metal foil to the surface of the separator film having the negative paste comprises:
and testing, namely testing whether the anode slurry and the cathode slurry in the electric chip are interacted by adopting electric induction equipment.
6. The manufacturing process of the positive and negative electrode plates of the battery core of claim 1, wherein the step of coating the positive electrode slurry in the positive electrode slurry containing frame and the step of coating the negative electrode slurry in the negative electrode slurry containing frame comprise:
the preparation method comprises the steps of mixing a binder, a conductive agent, a solvent and a positive active material according to a first preset mass proportion to obtain positive slurry, and mixing the binder, the conductive agent, the solvent and a negative active material according to a second preset mass proportion to obtain negative slurry.
7. The manufacturing process of the positive and negative electrode plates of the battery core of claim 6, wherein the first preset mass ratio among the adhesive, the conductive agent, the solvent and the positive active material is as follows: 0.05:0.3:0.05: 0.6.
8. the manufacturing process of the positive and negative electrode plates of the battery core of claim 6, wherein the second preset mass ratio among the adhesive, the conductive agent, the solvent and the negative active material is as follows: 0.05:0.2:0.05: 0.7.
9. the process for manufacturing positive and negative electrode plates of an electric core according to any one of claims 1 to 8, wherein the electric core electrode plate comprises a separation film, a positive slurry containing frame, a negative slurry containing frame, positive slurry, negative slurry, a positive metal foil and a negative metal foil;
the positive electrode slurry containing frame and the negative electrode slurry containing frame are respectively arranged on two sides of the isolating membrane;
the anode slurry is arranged in the anode slurry containing frame on the isolating membrane, and the cathode slurry is arranged in the cathode slurry containing frame on the isolating membrane;
the anode metal foil is connected with the anode slurry, and the cathode metal foil is connected with the cathode slurry.
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| US9899700B2 (en) * | 2014-08-21 | 2018-02-20 | Johnson & Johnson Vision Care, Inc. | Methods to form biocompatible energization elements for biomedical devices comprising laminates and deposited separators |
| JP6487669B2 (en) * | 2014-11-05 | 2019-03-20 | 昭和電工パッケージング株式会社 | Power storage device |
| WO2017182306A1 (en) * | 2016-04-18 | 2017-10-26 | Robert Bosch Gmbh | Electrochemical cell including electrode isolation frame |
| CN107681190B (en) * | 2016-08-01 | 2019-11-05 | 北京好风光储能技术有限公司 | A kind of the bipolar structure body and battery core of high-voltage battery |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098965A (en) * | 1977-01-24 | 1978-07-04 | Polaroid Corporation | Flat batteries and method of making the same |
| CN107305942A (en) * | 2016-04-22 | 2017-10-31 | 北京好风光储能技术有限公司 | A kind of takeup type negative plate and battery core and lithium slurry battery provided with the negative plate |
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