CN113594535A - Lithium ion battery and method for improving electrolyte infiltration and prolonging service life of lithium ion battery - Google Patents
Lithium ion battery and method for improving electrolyte infiltration and prolonging service life of lithium ion battery Download PDFInfo
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- CN113594535A CN113594535A CN202110935779.6A CN202110935779A CN113594535A CN 113594535 A CN113594535 A CN 113594535A CN 202110935779 A CN202110935779 A CN 202110935779A CN 113594535 A CN113594535 A CN 113594535A
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- battery
- electrolyte
- pipeline
- stopping frame
- liquid injection
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 67
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 35
- 230000008595 infiltration Effects 0.000 title claims abstract description 19
- 238000001764 infiltration Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 50
- 239000007924 injection Substances 0.000 claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 230000002035 prolonged effect Effects 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 6
- 230000002238 attenuated effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/673—Containers for storing liquids; Delivery conduits therefor
- H01M50/682—Containers for storing liquids; Delivery conduits therefor accommodated in battery or cell casings
-
- 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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention discloses a method for improving the electrolyte infiltration and prolonging the service life of a lithium ion battery, which comprises a cover plate, a stop frame, a liquid injection pipeline, a lug, a battery cell, a flow guide pipeline, an insulating bag and an aluminum shell. The invention has the beneficial effects that: through setting up electrolyte water conservancy diversion passageway at stop frame and insulating protection bag, can make electrolyte from the bottom up comprehensive soaks the pole piece and reduce annotate the liquid time and improve the infiltration effect and change gas outgoing electrolyte infiltration speed faster in the electricity core. And the insulating protection bag is provided with an electrolyte storage pipeline, so that the electrolyte is supplemented after the lithium ion battery uses the electrolyte for a long time and is reduced, and the service life of the battery is prolonged.
Description
Technical Field
The invention relates to a lithium ion battery, in particular to a method for improving electrolyte infiltration and prolonging the service life of a lithium ion and a lithium ion battery, belonging to the technical field of lithium ion batteries.
Background
Lithium ion batteries have been widely used in more and more fields, particularly in the field of large-scale energy storage, due to their excellent electrochemical properties and long cycle life. In order to further reduce the cost and improve the energy density, the larger the volume of the lithium ion battery is, the greater the length direction and the thickness direction of the lithium ion battery are, however, in the existing technical scheme, one or two liquid injection holes are still arranged on the battery cover plate for injecting electrolyte, and in order to ensure that the electrolyte can fully wet the active material, a method of prolonging the soaking time or adding an additive into the electrolyte is often adopted.
Along with the larger the lithium ion battery is, the higher the compaction density is, the higher the requirement for the infiltration of the electrolyte is provided, and the existing on-line technical scheme has certain disadvantages and hidden troubles. By the method of prolonging the infiltration time, the lithium ion battery after liquid injection needs to be stored for a long time under the condition of low dew point, so that the electrolyte can be ensured to be fully infiltrated, and then the liquid injection is carried out again or transferred to the next procedure, thereby obviously prolonging the production period of the lithium ion battery and promoting the increase of the manufacturing cost. The method of adding the wetting additive into the electrolyte not only increases the cost of the electrolyte, but also decreases the performance of the lithium ion battery while increasing the cost at the expense of the performance of the lithium ion battery in other aspects.
In the field of lithium ion batteries, a large-size battery cell or a battery cell with a high pole piece compaction density faces the problem of difficult electrolyte infiltration. Increasing the size of the cell and increasing the compacted density of the pole pieces are important ways to increase the energy of the lithium ion battery, so that the infiltration effect of the electrolyte is urgently needed to be improved, and the injection and standing time is reduced to reduce the manufacturing cost. If the electrolyte is not fully soaked, the battery capacity is low, partial area is incompletely charged and discharged, even the battery cannot be charged and discharged completely, or bubbles are generated in the subsequent process to cause the battery to expand. After the lithium ion battery is used for a long time, the electrolyte is reduced, the capacity is rapidly attenuated, and the service life is reduced.
Disclosure of Invention
The invention aims to solve the problems and provide a lithium ion battery and a method for improving the electrolyte infiltration and prolonging the service life of the lithium ion battery.
The invention realizes the purpose through the following technical scheme: a lithium ion battery includes a battery body; the battery body comprises apron, locking frame, notes liquid pipeline, utmost point ear, electric core, water conservancy diversion pipeline, insulating bag and aluminum hull, the apron is laid on the locking frame, the bottom of locking frame is provided with annotates the liquid pipeline, the upper end of electric core is connected with utmost point ear, the locking frame is laid in the electric core top, the outside parcel of electric core has insulating bag, just be provided with the water conservancy diversion pipeline in the insulating bag, the parcel has the electric core of insulating bag is inserted in the aluminum hull, the aluminum hull carries out fixed connection with the apron of its top.
As a still further scheme of the invention: the battery cell is made of a positive plate, a negative plate and a diaphragm in a winding mode, and the positive lug and the negative lug of the two battery cells are respectively welded on the positive end plate and the negative end plate of the cover plate.
As a still further scheme of the invention: the liquid injection pipeline on the stopping frame is opposite to the liquid injection hole formed in the cover plate, and the stopping frame is provided with a through groove clamped on the positive and negative electrode lugs.
As a still further scheme of the invention: the liquid injection pipeline corresponds to the insulation bag along the periphery of the stopping frame, so that the flow guide pipeline on the insulation bag can be connected with the insulation bag.
As a still further scheme of the invention: the flow guide pipelines arranged in the insulating bag are vertically distributed from top to bottom.
A method for improving electrolyte infiltration and prolonging service life of a lithium ion battery comprises the following steps:
A. the positive plate, the negative plate and the diaphragm are manufactured into a single battery cell in a winding mode, and positive lugs and negative lugs of the two battery cells are respectively welded on a positive end plate and a negative end plate of the cover plate to form the battery cells of the double battery cells;
B. installing a stopping frame, wherein a liquid injection pipeline on the stopping frame is opposite to a liquid injection hole on the cover plate and fixes the positive and negative electrode lugs to prevent the positive and negative electrode lugs from shaking;
C. one side end of the stopping frame is clamped, after the positive and negative lugs penetrate through the holes, which are opposite to the lugs, on the stopping frame, the stopping frame is completely closed, the stopping frame is positioned between the battery cell and the cover plate and is tightly attached to the cover plate, and the opening of the explosion-proof valve on the stopping frame and the port of the liquid injection pipeline respectively correspond to the explosion-proof valve on the cover plate and the liquid injection hole. The liquid injection pipeline corresponds to the insulation bag along the periphery of the stopping frame, so that the diversion pipeline on the insulation bag can be just accessed;
D. installing an insulating bag, wrapping the double electric cores by the insulating bag, connecting a flow guide pipeline in the insulating bag with a liquid injection pipeline of the stop frame to form a complete circulation pipeline, and guiding the electrolyte to flow into the bottoms of the electric cores and storing the electrolyte;
E. placing the battery cell with the insulating bag and the stopping frame installed in an aluminum shell, and welding the shell cover;
F. baking the welded battery core, and removing water in the battery core;
G. injecting liquid into the battery cell with qualified moisture, wherein during liquid injection, electrolyte enters a diversion pipeline through an injection hole, rapidly enters the bottom of the battery cell along the diversion pipeline, rapidly infiltrates a positive plate, a negative plate and a diaphragm from the bottom, and simultaneously discharges gas in the battery cell;
H. after injecting a set amount of electrolyte, stopping injecting the electrolyte, and standing and deeply infiltrating the battery core;
I. carrying out secondary liquid injection on the battery cell after standing, wherein when the injected electrolyte, such as the positive plate, the negative plate and the diaphragm, is not absorbed any more, the redundant electrolyte is stored in the pipeline;
J. the battery core after liquid injection is manufactured into a battery through the steps of formation, aging, sealing, capacity grading, detection and the like;
K. after the battery is recycled, the electrolyte can be slowly reduced, gas is generated inside the battery, the electrolyte stored in the pipeline can be supplemented into the battery core at the moment, the capacity of the battery is prevented from being rapidly attenuated due to insufficient electrolyte, and the service life of the battery is prolonged.
The invention has the beneficial effects that: the method for improving the electrolyte infiltration and prolonging the service life of the lithium ion battery is reasonable in design, and the electrolyte guide channels are arranged on the stopping frame and the insulating protection bag, so that the electrolyte can infiltrate the pole piece from bottom to top completely, the electrolyte injection time is shortened, the infiltration effect is improved, and the electrolyte infiltration speed is higher when the gas in the battery cell is discharged from the electrolyte more easily. And the insulating protection bag is provided with an electrolyte storage pipeline, so that the electrolyte is supplemented after the lithium ion battery uses the electrolyte for a long time and is reduced, and the service life of the battery is prolonged.
Drawings
FIG. 1 is a schematic view of an assembly structure of the present invention;
FIG. 2 is a schematic view of the connection structure of the stopper frame and the insulating bag according to the present invention.
In the figure: 1. the device comprises a cover plate, 2, a stopping frame, 3, a liquid injection pipeline, 4, a lug, 5, an electric core, 6, a flow guide pipeline 7, an insulating bag, 8 and an aluminum shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Referring to fig. 1-2, a lithium ion battery includes a battery body; the battery body comprises apron 1, locking frame 2, notes liquid pipeline 3, utmost point ear 4, electric core 5, water conservancy diversion pipeline 6, insulating bag 7 and aluminum hull 8, apron 1 lays on locking frame 2, the bottom of locking frame 2 is provided with annotates liquid pipeline 3, the upper end of electric core 5 is connected with utmost point ear 4, locking frame 2 lays in electric core 5 top, the outside parcel of electric core 5 has insulating bag 7, just be provided with water conservancy diversion pipeline 6 in the insulating bag 7, the parcel has electric core 5 of insulating bag 7 is inserted in aluminum hull 8, aluminum hull 8 carries out fixed connection rather than the apron 1 of top.
In the embodiment of the invention, the battery cell 5 is made of a positive plate, a negative plate and a diaphragm by winding, and the positive tab and the negative tab of the two battery cells 5 are respectively welded on the positive end plate and the negative end plate of the cover plate 1 to form a battery cell with double battery cells.
In the embodiment of the invention, the liquid injection pipeline 3 on the stopping frame 2 is opposite to the liquid injection hole formed on the cover plate 1, and the stopping frame 2 is provided with a through groove clamped on the positive and negative lugs 4 to prevent the positive and negative lugs from shaking.
In the embodiment of the invention, the liquid injection pipeline 3 corresponds to the insulating bag 7 along the periphery of the stopping frame 2, so that the flow guide pipeline 6 on the insulating bag 7 can be just connected to form a complete flow pipeline, and electrolyte is guided into the bottom of the battery core and stored.
In the embodiment of the invention, the flow guide pipelines 6 arranged in the insulating bag 7 are vertically distributed from top to bottom, so that the electrolyte can completely infiltrate the pole piece from bottom to top, the electrolyte injection time is shortened, the infiltration effect is improved, and the gas in the battery cell can be more easily discharged out of the electrolyte and the infiltration speed is higher.
A lithium ion battery is a large-size battery with high capacity and large thickness, the thickness of the battery is 71mm, the battery comprises 2 pole cores, and each pole core is 33.4mm thick. The battery cover plate is provided with a liquid injection hole 1, electrolyte is injected into the battery through the liquid injection hole, and is welded and sealed after formation, and the method for improving the electrolyte infiltration and prolonging the service life comprises the following steps:
A. the positive plate, the negative plate and the diaphragm are made into a single battery cell 5 in a winding mode, and the positive lug and the negative lug of the two battery cells 5 are respectively welded on the positive end plate and the negative end plate of the cover plate 1 to form a battery cell with double battery cells;
B. installing a stopping frame 2, wherein a liquid injection pipeline on the stopping frame 2 is opposite to a liquid injection hole on the cover plate 1, and fixing the positive and negative electrode lugs 4 to prevent the positive and negative electrode lugs 4 from shaking;
C. one side end of the stopping frame 2 is clamped, after the positive and negative lugs 4 pass through holes which are opposite to the lugs on the stopping frame 2, the stopping frame 2 is completely closed again, at the moment, the stopping frame 2 is positioned between the battery cell 5 and the cover plate 1 and is tightly attached to the cover plate 1, and the opening of the explosion-proof valve on the stopping frame 2 and the port of the liquid injection pipeline 3 correspond to the explosion-proof valve on the cover plate 1 and the liquid injection hole respectively. The liquid injection pipeline 3 corresponds to the insulation bag 7 along the periphery of the stopping frame 2, so that the diversion pipeline 6 on the insulation bag 7 can be just accessed;
D. installing an insulating bag 7, wherein the insulating bag 7 wraps the double electric cores, and a flow guide pipeline 6 in the insulating bag 7 is connected with the liquid injection pipeline 3 of the stopping frame 2 to form a complete flow pipeline, so that the electrolyte is guided to flow into the bottoms of the electric cores and is stored;
E. placing the battery cell 5 with the insulating bag 7 and the stopping frame 2 installed in the aluminum shell 8, and welding the shell cover;
F. baking the welded battery cell 5, and removing water in the battery cell 5;
G. injecting liquid into the battery cell 5 with qualified moisture, wherein during liquid injection, the electrolyte enters the flow guide pipeline 6 through the liquid injection hole, rapidly enters the bottom of the battery cell 5 along the flow guide pipeline 6, rapidly infiltrates the positive plate, the negative plate and the diaphragm from the bottom, and simultaneously discharges gas in the battery cell 5;
H. after injecting the electrolyte with a set amount, stopping injecting the electrolyte, and standing and deeply infiltrating the battery cell 5;
I. the battery core 5 after standing is subjected to secondary liquid injection, and when the injected electrolyte, such as the positive plate, the negative plate and the diaphragm, is not absorbed any more, the redundant electrolyte is stored in the pipeline;
J. the battery cell 5 after liquid injection is manufactured into a battery through the steps of formation, aging, sealing, capacity grading, detection and the like;
K. after the battery is recycled, the electrolyte can be slowly reduced, gas is generated inside the battery, the electrolyte stored in the pipeline can be supplemented into the battery core 5, the capacity of the battery is prevented from being rapidly attenuated due to insufficient electrolyte, and the service life of the battery is prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A lithium ion battery includes a battery body; the method is characterized in that: the battery body comprises a cover plate (1), a stopping frame (2), an injection pipeline (3), a pole lug (4), an electric core (5), a diversion pipeline (6), an insulating bag (7) and an aluminum shell (8), wherein the cover plate (1) is arranged on the stopping frame (2), the injection pipeline (3) is arranged at the bottom of the stopping frame (2), the pole lug (4) is connected to the upper end of the electric core (5), the stopping frame (2) is arranged above the electric core (5), the insulating bag (7) is wrapped outside the electric core (5), the diversion pipeline (6) is arranged in the insulating bag (7), the electric core (5) of the insulating bag (7) is arranged in the aluminum shell (8), and the aluminum shell (8) is fixedly connected with the cover plate (1) above the aluminum shell.
2. A lithium ion battery according to claim 1, wherein: the battery cell (5) is made of a positive plate, a negative plate and a diaphragm in a winding mode, and the positive lug and the negative lug of the two battery cells (5) are respectively welded on the positive end plate and the negative end plate of the cover plate (1).
3. A lithium-ion battery according to claim 1 or 2, characterized in that: the liquid injection pipeline (3) on the stopping frame (2) is opposite to the liquid injection hole formed on the cover plate (1), and the stopping frame (2) is provided with a through groove clamped on the positive and negative electrode lugs (4).
4. A lithium ion battery according to claim 3, wherein: the liquid injection pipeline (3) corresponds to the insulation bag (7) along the periphery of the stopping frame (2), so that the flow guide pipeline (6) on the insulation bag (7) can be just connected.
5. A lithium ion battery according to claim 1, wherein: and the flow guide pipelines (6) arranged in the insulating bag (7) are vertically distributed from top to bottom.
6. The method for improving the electrolyte infiltration and prolonging the service life of the lithium ion battery based on the claim 1 is characterized by comprising the following steps:
A. the positive plate, the negative plate and the diaphragm are made into a single battery cell (5) in a winding mode, and the positive lugs and the negative lugs of the two battery cells (5) are respectively welded on the positive end plate and the negative end plate of the cover plate (1) to form a battery cell with double battery cells;
B. a stopping frame (2) is installed, a liquid injection pipeline on the stopping frame (2) is opposite to a liquid injection hole on the cover plate (1), and the positive and negative electrode lugs (4) are fixed to prevent the positive and negative electrode lugs (4) from shaking;
C. one side end of the stopping frame (2) is clamped, after the positive and negative electrode lugs (4) penetrate through holes, which are opposite to the lugs, on the stopping frame (2), the stopping frame (2) is completely closed again, at the moment, the stopping frame (2) is positioned between the battery core (5) and the cover plate (1) and is tightly attached to the cover plate ((1), an explosion-proof valve opening and a liquid injection pipeline (3) port on the stopping frame (2) respectively correspond to an explosion-proof valve and a liquid injection hole on the cover plate (1) for injecting liquid, the pipeline (3) corresponds to the insulating bag (7) along the periphery of the stopping frame (2), and a flow guide pipeline (6) on the insulating bag (7) can be just connected;
D. installing an insulating bag (7), wherein the insulating bag (7) wraps the double electric cores, and a flow guide pipeline (6) in the insulating bag (7) is connected with an injection pipeline (3) of the stopping frame (2) to form a complete flow pipeline, so that electrolyte is guided to flow into the bottoms of the electric cores and is stored;
E. placing the battery core (5) with the insulating bag (7) and the stopping frame (2) installed in an aluminum shell (8), and welding a shell cover;
F. baking the welded battery core (5) to remove moisture in the battery core (5);
G. injecting liquid into the battery cell (5) with qualified moisture, wherein during liquid injection, electrolyte enters the flow guide pipeline (6) through the liquid injection hole, rapidly enters the bottom of the battery cell (5) along the flow guide pipeline (6), rapidly infiltrates the positive plate, the negative plate and the diaphragm from the bottom, and simultaneously discharges gas in the battery cell (5);
H. after the electrolyte with a set amount is injected, stopping injecting the electrolyte, and standing and deeply infiltrating the battery cell (5);
I. the battery core (5) after standing is subjected to secondary liquid injection, and when the injected electrolyte, such as the positive plate, the negative plate and the diaphragm, is not absorbed any more, redundant electrolyte is stored in the pipeline;
J. the battery core (5) after liquid injection is manufactured into a battery through the steps of formation, aging, sealing, capacity grading and detection;
K. after the battery is recycled, the electrolyte can be slowly reduced, gas is generated inside the battery, the electrolyte stored in the pipeline can be supplemented into the battery core (5), the capacity of the battery is prevented from being rapidly attenuated due to insufficient electrolyte, and the service life of the battery is prolonged.
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| CN202110935779.6A CN113594535A (en) | 2021-08-16 | 2021-08-16 | Lithium ion battery and method for improving electrolyte infiltration and prolonging service life of lithium ion battery |
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| CN202110935779.6A CN113594535A (en) | 2021-08-16 | 2021-08-16 | Lithium ion battery and method for improving electrolyte infiltration and prolonging service life of lithium ion battery |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1125931A (en) * | 1997-07-01 | 1999-01-29 | Matsushita Electric Ind Co Ltd | Battery |
| JP2003257385A (en) * | 2002-02-27 | 2003-09-12 | Matsushita Electric Ind Co Ltd | Sealed thin lithium ion secondary battery |
| CN203871385U (en) * | 2014-04-23 | 2014-10-08 | 东莞新能源科技有限公司 | Battery |
| JP2018198163A (en) * | 2017-05-24 | 2018-12-13 | トヨタ自動車株式会社 | Secondary battery |
| CN110165288A (en) * | 2019-06-20 | 2019-08-23 | 山东零壹肆先进材料有限公司 | A kind of soft bag lithium ionic cell shell stamp structure |
| CN210576090U (en) * | 2019-09-09 | 2020-05-19 | 成都市银隆新能源产业技术研究有限公司 | Battery shell and battery |
| CN111312979A (en) * | 2020-04-03 | 2020-06-19 | 上海豫源电力科技有限公司 | Multi-pole terminal lithium battery and manufacturing method thereof |
| WO2021098739A1 (en) * | 2019-11-22 | 2021-05-27 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN213304239U (en) * | 2020-05-25 | 2021-05-28 | 浙江弘同电源科技有限公司 | Battery with liquid injection channel |
| CN113036267A (en) * | 2021-01-26 | 2021-06-25 | 江苏中兴派能电池有限公司 | Crust lithium ion battery structure |
-
2021
- 2021-08-16 CN CN202110935779.6A patent/CN113594535A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1125931A (en) * | 1997-07-01 | 1999-01-29 | Matsushita Electric Ind Co Ltd | Battery |
| JP2003257385A (en) * | 2002-02-27 | 2003-09-12 | Matsushita Electric Ind Co Ltd | Sealed thin lithium ion secondary battery |
| CN203871385U (en) * | 2014-04-23 | 2014-10-08 | 东莞新能源科技有限公司 | Battery |
| JP2018198163A (en) * | 2017-05-24 | 2018-12-13 | トヨタ自動車株式会社 | Secondary battery |
| CN110165288A (en) * | 2019-06-20 | 2019-08-23 | 山东零壹肆先进材料有限公司 | A kind of soft bag lithium ionic cell shell stamp structure |
| CN210576090U (en) * | 2019-09-09 | 2020-05-19 | 成都市银隆新能源产业技术研究有限公司 | Battery shell and battery |
| WO2021098739A1 (en) * | 2019-11-22 | 2021-05-27 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN111312979A (en) * | 2020-04-03 | 2020-06-19 | 上海豫源电力科技有限公司 | Multi-pole terminal lithium battery and manufacturing method thereof |
| CN213304239U (en) * | 2020-05-25 | 2021-05-28 | 浙江弘同电源科技有限公司 | Battery with liquid injection channel |
| CN113036267A (en) * | 2021-01-26 | 2021-06-25 | 江苏中兴派能电池有限公司 | Crust lithium ion battery structure |
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