CN107946661A - A kind of cell manufacturing method for improving battery high-temperature storage performance - Google Patents
A kind of cell manufacturing method for improving battery high-temperature storage performance Download PDFInfo
- Publication number
- CN107946661A CN107946661A CN201711146588.1A CN201711146588A CN107946661A CN 107946661 A CN107946661 A CN 107946661A CN 201711146588 A CN201711146588 A CN 201711146588A CN 107946661 A CN107946661 A CN 107946661A
- Authority
- CN
- China
- Prior art keywords
- finished product
- semi
- storage performance
- battery
- temperature storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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
Abstract
The invention discloses a kind of cell manufacturing method for improving battery high-temperature storage performance, its step are as follows：A, positive plate, membrane and negative plate are sequentially stacked, loaded after being wound into battery core in packaging bag, and inject electrolyte, obtain semi-finished product A；B, be aged, the semi-finished product A in step a is aged at 40~60 DEG C 8~12 it is small when, obtain semi-finished product B；C, preliminary filling, carries out pressurization chemical conversion and precharge by the semi-finished product B in step b at 80 DEG C, electrode material is formed one layer of passivation layer for being covered in electrode material surface on solid-liquid phase interface with electrolyte, obtain semi-finished product C；D, the semi-finished product C in step c is cooled down and finished product lithium battery is made in battery core sealing, so that negative electrode active material surface forms passivating film (SEI films) in high-temperature pressurizing formation process, with higher stability, and improve the high-temperature behavior of battery core.
Description
[technical field]
The present invention relates to a kind of cell manufacturing method for improving battery high-temperature storage performance.
[background technology]
As the electronic products such as modern society and the continuous development of science and technology, laptop, tablet computer, mobile phone obtain
It is widely applied to comparing.And lithium ion battery is as a kind of green power supply, due to its energy density is high, have extended cycle life and from
The advantages such as discharge rate is low, are widely used in various electronic products.
Lithium ion battery in electronic product inevitably needs to use at relatively high temperatures sometimes, lithium ion battery
Use environment temperature is even as high as 80 DEG C or more, battery stored in such hot environment will occur flatulence quickly and cannot
Use.
When temperature rises, lithium polymer battery output power can also rise therewith.Temperature also influences the biography of electrolyte at the same time
Speed is sent, temperature is increased and accelerates, battery charging and discharging performance is affected, when temperature is more than 60 DEG C, can destroy in battery
Chemical balance, causes side reaction.Battery core after chemical conversion at present, stores up to the time of 3 days or so, electricity under 60 DEG C of environment of high temperature
Just there occurs larger disadvantageous changes for the performance of core.
[content of the invention]
The invention overcomes the shortcomings of the above-mentioned technology and provides a kind of battery manufacture side for improving battery high-temperature storage performance
Method so that negative electrode active material surface forms passivating film (SEI films) in high-temperature pressurizing formation process, has higher stabilization
Property, and improve the high-temperature behavior of battery core.
To achieve the above object, present invention employs following technical proposal：
A kind of cell manufacturing method for improving battery high-temperature storage performance, its step are as follows：
A, positive plate, membrane and negative plate are sequentially stacked, loaded after being wound into battery core in packaging bag, and inject electrolysis
Liquid, obtains semi-finished product A；
B, be aged, the semi-finished product A in step a is aged at 40~60 DEG C 8~12 it is small when, obtain semi-finished product B；
C, preliminary filling, carries out pressurization chemical conversion and precharge by the semi-finished product B in step b at 80 DEG C, makes electrode material and electricity
Solution liquid forms one layer of passivation layer for being covered in electrode material surface on solid-liquid phase interface, obtains semi-finished product C；
D, the semi-finished product C in step c is cooled down and finished product lithium battery is made in battery core sealing.
The step d has been further included finished product lithium battery is placed in 55 DEG C~80 DEG C at a temperature of carry out the pre-heat treatment.
The time of the pre-heat treatment is 3 hours to 7 days.
The pressure value of pressurization chemical conversion is 147kg.
The beneficial effects of the invention are as follows：
Passivating film (SEI films) in lithium battery of the present invention is to be acted on and given birth to electrode material by electrolyte at high temperature under high pressure
Into it has higher stability at high temperature, and high-temperature behavior is good, also improves the high-temperature storage performance of battery, in 60 DEG C of environment
The lower time that can preserve more than 15 days, compared with without heating pressurization chemical conversion battery core, high-temperature storage performance lifted more than 2 times, and
Without carrying out larger change to battery making apparatus and technique, adaptable, technique is simple, easy to operation, easily controllable pipe
Reason.
[embodiment]
Embodiments of the present invention are described in further detail：
A kind of cell manufacturing method for improving battery high-temperature storage performance, its step are as follows：
A, positive plate, membrane and negative plate are sequentially stacked, loaded after being wound into battery core in packaging bag, and inject electrolysis
Liquid, obtains semi-finished product A；
B, be aged, the semi-finished product A in step a is aged at 40~60 DEG C 8~12 it is small when, obtain semi-finished product B, wherein,
Ageing refers to after precipitation, allows nascent precipitation to place a period of time together with mother liquor, little crystal grain is gradually dissolved, big brilliant
Grain is gradually grown up, and makes to be adsorbed, occlusion and the impurity that contains inside precipitation reenter solution, improves the purity of precipitation；
C, preliminary filling, carries out pressurization chemical conversion and precharge by the semi-finished product B in step b at 80 DEG C, makes electrode material and electricity
Solution liquid forms one layer of passivation layer for being covered in electrode material surface on solid-liquid phase interface, obtains semi-finished product C, wherein pressurization chemical conversion
Pressure value be 147kg；
D, the semi-finished product C in step c is cooled down and finished product lithium battery is made in battery core sealing.
Wherein, the step d has been further included finished product lithium battery is placed in 55 DEG C~80 DEG C at a temperature of carry out the pre-heat treatment,
The time of the pre-heat treatment is 3 hours to 7 days, further improves the high-temperature storage performance of lithium ion battery.
Passivating film (SEI films) in the present invention is to be acted on and generated by electrolyte and electrode material at high temperature under high pressure, its
There is higher stability at high temperature, high-temperature behavior is good, while also improves the high-temperature storage performance of battery, without to battery system
Make equipment and technique and carry out big change, adaptable, technique is simple, easily controllable, can be preserved under 60 DEG C of environment 15 days with
On time, compared with without heating pressurization chemical conversion battery core, high-temperature storage performance lifted more than 2 times.
Meanwhile the cold pressing of progress heat can also achieve the purpose that to improve battery high-temperature storage performance after being melted into step c,
It is but of high cost.
Claims (4)
1. a kind of cell manufacturing method for improving battery high-temperature storage performance, its step are as follows：
A, positive plate, membrane and negative plate are sequentially stacked, loaded after being wound into battery core in packaging bag, and inject electrolyte, obtained
To semi-finished product A；
B, be aged, the semi-finished product A in step a is aged at 40~60 DEG C 8~12 it is small when, obtain semi-finished product B；
C, preliminary filling, carries out pressurization chemical conversion and precharge by the semi-finished product B in step b at 80 DEG C, makes electrode material and electrolyte
One layer of passivation layer for being covered in electrode material surface is formed on solid-liquid phase interface, obtains semi-finished product C；
D, the semi-finished product C in step c is cooled down and finished product lithium battery is made in battery core sealing.
A kind of 2. cell manufacturing method for improving battery high-temperature storage performance according to claim 1, it is characterised in that：Institute
State step d further included finished product lithium battery is placed in 55 DEG C~80 DEG C at a temperature of carry out the pre-heat treatment.
A kind of 3. cell manufacturing method for improving battery high-temperature storage performance according to claim 2, it is characterised in that：In advance
The time of heat treatment is 3 hours to 7 days.
A kind of 4. cell manufacturing method for improving battery high-temperature storage performance according to claim 1, it is characterised in that：Add
The pressure value of pressure chemical conversion is 147kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146588.1A CN107946661A (en) | 2017-11-17 | 2017-11-17 | A kind of cell manufacturing method for improving battery high-temperature storage performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146588.1A CN107946661A (en) | 2017-11-17 | 2017-11-17 | A kind of cell manufacturing method for improving battery high-temperature storage performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107946661A true CN107946661A (en) | 2018-04-20 |
Family
ID=61931799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711146588.1A Pending CN107946661A (en) | 2017-11-17 | 2017-11-17 | A kind of cell manufacturing method for improving battery high-temperature storage performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107946661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824430A (en) * | 2022-07-01 | 2022-07-29 | 江苏时代新能源科技有限公司 | Method and device for adjusting flatness of battery case and battery manufacturing system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376972A (en) * | 2010-08-20 | 2012-03-14 | 深圳市比克电池有限公司 | Lithium ion battery and method for improving high-temperature storage performance of same |
| CN102544591A (en) * | 2012-02-13 | 2012-07-04 | 东莞新能源科技有限公司 | Method for improving high-temperature storage performance of lithium ion battery |
| WO2015136937A1 (en) * | 2014-03-14 | 2015-09-17 | Toyota Jidosha Kabushiki Kaisha | Method for producing secondary battery and secondary battery |
| CN106099202A (en) * | 2016-08-19 | 2016-11-09 | 骆驼集团新能源电池有限公司 | A kind of lamination flexible packing lithium ion battery rapid forming method |
| CN106129505A (en) * | 2016-07-19 | 2016-11-16 | 珠海光宇电池有限公司 | A kind of compound method for lithium ion battery |
| CN106684426A (en) * | 2016-12-29 | 2017-05-17 | 多氟多（焦作）新能源科技有限公司 | Formation method of softly-packed lithium ion battery |
-
2017
- 2017-11-17 CN CN201711146588.1A patent/CN107946661A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376972A (en) * | 2010-08-20 | 2012-03-14 | 深圳市比克电池有限公司 | Lithium ion battery and method for improving high-temperature storage performance of same |
| CN102544591A (en) * | 2012-02-13 | 2012-07-04 | 东莞新能源科技有限公司 | Method for improving high-temperature storage performance of lithium ion battery |
| WO2015136937A1 (en) * | 2014-03-14 | 2015-09-17 | Toyota Jidosha Kabushiki Kaisha | Method for producing secondary battery and secondary battery |
| CN106129505A (en) * | 2016-07-19 | 2016-11-16 | 珠海光宇电池有限公司 | A kind of compound method for lithium ion battery |
| CN106099202A (en) * | 2016-08-19 | 2016-11-09 | 骆驼集团新能源电池有限公司 | A kind of lamination flexible packing lithium ion battery rapid forming method |
| CN106684426A (en) * | 2016-12-29 | 2017-05-17 | 多氟多（焦作）新能源科技有限公司 | Formation method of softly-packed lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824430A (en) * | 2022-07-01 | 2022-07-29 | 江苏时代新能源科技有限公司 | Method and device for adjusting flatness of battery case and battery manufacturing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105406129B (en) | A kind of chemical synthesizing method of lithium ion battery | |
| CN106099202B (en) | A kind of lamination flexible packing lithium ion battery rapid forming method | |
| CN103378372B (en) | Lithium ion battery is shelved and aging method | |
| CN107403945B (en) | A kind of soft package lithium ion power battery chemical conversion rolling method | |
| CN108258347B (en) | Formation method of silicon negative electrode soft package lithium ion battery | |
| CN104868169B (en) | SEI (Solid Electrolyte Interface) of lithium ion battery and preparation method of SEI | |
| CN106299514A (en) | A kind of compound method for lithium ion battery | |
| CN104577211B (en) | A kind of battery preparation method improving cycle performance of lithium ion battery | |
| CN108598581A (en) | A kind of chemical synthesizing method of soft bag lithium ionic cell | |
| CN104269584A (en) | Method for forming polymer lithium battery | |
| CN104681865B (en) | A kind of full solid state polymer electrolyte and its application in the battery | |
| CN111313101B (en) | Low-internal-resistance solid sulfide electrolyte lithium battery cell, battery and preparation method thereof | |
| CN105489857A (en) | Quick charging lithium-ion battery | |
| CN107331902A (en) | A kind of lead-acid accumulator pulse container formation technique | |
| CN103594745A (en) | Method and device for improving performance of lithium ion battery | |
| CN113078363A (en) | Method for prolonging cycle life of lithium ion battery | |
| CN107946661A (en) | A kind of cell manufacturing method for improving battery high-temperature storage performance | |
| CN109489346A (en) | A kind of baking method of lithium ion battery cell | |
| WO2020147153A1 (en) | Lithium battery production process | |
| CN106848411A (en) | A kind of normal pressure chemical component negative pressure seals preparation method of lithium ion battery | |
| CN108011139A (en) | Current-increasing temperature-changing type rapid charging formation method | |
| CN110247121B (en) | Electrolyte infiltration method of lithium ion battery, lithium ion battery prepared by using electrolyte infiltration method and electronic device | |
| CN104766958A (en) | Silicon-carbon composite material and preparation method thereof, and lithium ion battery | |
| CN107247239A (en) | The determination method of high-temperature lithium ion battery ageing time | |
| CN112838280A (en) | Formation process of flexible-package polymer thin lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |