CN100403578C - Method and apparatus for battery vacuum sealing - Google Patents
Method and apparatus for battery vacuum sealing Download PDFInfo
- Publication number
- CN100403578C CN100403578C CNB2004100273950A CN200410027395A CN100403578C CN 100403578 C CN100403578 C CN 100403578C CN B2004100273950 A CNB2004100273950 A CN B2004100273950A CN 200410027395 A CN200410027395 A CN 200410027395A CN 100403578 C CN100403578 C CN 100403578C
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- battery
- vacuum
- liquid injection
- injection hole
- anchor clamps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The present invention relates to a sealing method for a battery in vacuum and a device thereof. The method comprises the following steps: A) a liquid injecting hole of a charged and formed battery is upwards fixed to a concave clamp; B) a curved plugging body is placed on the liquid injecting hole, and the diameter of the curved plugging body is a little larger than that of the liquid injecting hole; C) the curved plugging body is vertically connected with a pressure lever of a pressing machine; D) the battery, the concave clamp and the pressing machine are placed in a vacuum chamber for vacuum pumping; E) when certain vacuum degree value is achieved, the pressure lever is started to downwards push the curved plugging body to gradually plug the liquid injecting hole; F) the vacuum state in the vacuum chamber is relieved, a battery with air exhaust sealing is obtained, and the battery is taken out. The present invention provides a sealing method for a battery in vacuum and a device thereof, and the present invention can further reduce gas in a formed electric core, further improve the shape dimension uniformity rate of a battery, and improve battery capacity.
Description
[technical field]
The present invention relates to a kind of ion battery, more particularly, the present invention relates to a kind of ion battery and sealing process method and apparatus thereof.
[background technology]
Ion battery is representative with the lithium ion battery; becoming important requisite Power Supply fittings on the communication products such as mobile phone, mobile DVD, palmtop PC day by day; the core of lithium battery then is electric core; the electricity core is made up of electrode, electrolyte etc., the outside by housing, cover plate to finalized the design and protected.
Lithium battery in the market generally adopts rectangular configuration, housing generally is flat, and shell material is generally stainless steel or aluminium, but since the lithium battery of aluminum hull have bigger than box hat battery capacity, so the lithium battery development trend on the market is a rectangle aluminum hull lithium battery.But no matter the aluminum hull lithium battery is to adopt opening to change into or adopt earlier liquid injection hole to be sealed the method that changes in process of production, owing to all can produce gas in the forming process of electric core SEI film when changing into, and the gas that produces rests between pole piece and the pole piece easily, therefore all need exit again and flattens and seal.
The technology in this field such as application number are preparation method and the battery obtained by this method that 03137057.8 Chinese patent file discloses a kind of pocket type lithium ion battery.Its pocket type lithium ion battery is made up of the plastic-aluminum combined film package bag, positive plate, negative plate, barrier film, lug and the electrolyte that have groove, the preparation method of pocket type lithium ion battery by preparation moulding, the battery liquid-filling of the preparation of the forming of battery container, both positive and negative polarity pole piece, battery, technology such as seal, change into and form, wherein, in the sealing process, after battery being carried out vacuumize and injecting organic electrolyte, battery is carried out the 3rd limit vacation to seal, and then battery changed into, carry out vacuum heat-sealing mouth at last, form complete battery.It is said: the false sealing process that it adopted has been avoided the influence to battery performance and electrolyte of extraneous aqueous vapor and oxygen effectively, made full use of electrolyte, improved the utilance of cell active materials, avoided the influence of the gas that produces in the initial battery formation process battery performance.And simple to operate, not high to environmental requirement, can reduce battery cost, adopt this process can prepare the lithium ion battery of difformity, different-thickness simultaneously.The pocket type lithium ion battery of producing by this process have the energy density height, in light weight, volume of battery is little, can heavy-current discharge, the characteristics of good cycle, the security performance of battery also is improved simultaneously.But, above-mentioned technical scheme and not mentioned concrete technical process and equipment in detail.
Similarly be that 02114845.7 Chinese patent file discloses a kind of method of making flexible-packaged lithium secondary cell as application number; Be the method that is that aluminum plastic film encapsulation back uses pressurization to change into, the battery after changing into is vacuum-pumping and sealing again; Concrete vacuum-pumping and sealing technical process and equipment are not made description in the technique scheme yet.
And in the actual production, adopt in the vacuum seal technical process, treat vacuum suction basic clean after, all be that battery is shifted out vacuum chamber row sealing liquid injection hole more usually.In addition, the flattening of electricity core also adopts the electric core after mould changes into opening to carry out shaping basically simultaneously, though the method can be discharged the gas of electric in-core to a certain extent, but still have more gas and stay electric in-core, consequently electrolyte is rested on the gas barrier between pole piece and the pole piece and is difficult to pole piece is carried out fully and comprehensively wetting, cause the pole piece at bubble place not activate preferably, the result is easy to generate in the charge and discharge process that uses afterwards of electric core to analyse lithium, influences electric core capacity; In addition, electric core is the methods that adopt mould to add pneumatic cylinder when flattening is sealed more, and it is more influenced by mould and die accuracy and human factor, and the consistency of the electric core thickness after the flattening is difficult to reach, and is easy to generate the battery container appearance poor.
[summary of the invention]
At the above-mentioned shortcoming of prior art, the technical purpose that the present invention will reach be to provide a kind of can further reduce the gas of the electric in-core after changing into, further improve battery the overall dimension concordance rate, improve the battery vacuum seal method and the device thereof of battery capacity.
For this reason, one of technical scheme of the present invention is a kind of battery vacuum seal method, this method is mainly used in the battery with rectangle or circular shell and liquid injection hole, this mouth-sealing method comprises the steps: A) liquid injection hole of battery after will changing into through overcharging is fixed in the spill anchor clamps up, B) on described liquid injection hole, place slightly larger in diameter in the curved surface occluding body of liquid injection hole, C) the vertical forcing press depression bar that connects on described curved surface occluding body, D) place vacuum chamber to vacuumize described battery and spill anchor clamps and described forcing press, E) when reaching certain vacuum degree value, start described depression bar and push described curved surface occluding body downwards progressively to seal described liquid injection hole, F) vacuum state in the described vacuum chamber of releasing, obtain the battery that exhaust is sealed, battery is taken out.Except extract the gas the electric core out from liquid injection hole, can also from other passage that communicates with electric in-core portion or Kong Guanzhong bleeds and shutoff.In the traditional handicraft in order to discharge the gas of electric in-core, all adopting vacuum pumping method will rest on the gas that reaches in the electrolyte between pole piece and the pole piece takes away by liquid injection hole, after waiting to bleed substantially totally, battery is shifted out vacuum chamber row sealing liquid injection hole again, like this, though, be drawn out of the electric core and the electrolyte of battery through a large amount of gases after vacuumizing, in case but battery is returned to outside the vacuum chamber, under atmospheric environment, liquid injection hole is carried out in the shutoff process, still having portion gas penetrates in electric core and the electrolyte again, also can cause in the shutoff process too much overflowing of electrolyte, the effect of battery vacuum-pumping is given a discount.At the above-mentioned shortcoming that exists in the conventional art, method of the present invention is taked to carry out sealing of liquid injection hole simultaneously in the step of battery vacuum-pumping, vacuumize the shutoff that finishes also to have finished simultaneously liquid injection hole, therefore avoided gas to be returned to again in electric core and the electrolyte effectively, reduced overflowing of electrolyte, thereby the contact area of analysing lithium, increasing electrolyte and pole piece in the time of can reducing electric core and discharge and recharge helps the wetting of pole piece, improve the power capacity of battery significantly, also further improved the overall dimension concordance rate of battery.
For further improving the efficient and the operation ease of the inventive method, the present invention takes following concrete corrective measure: in steps A) in, the spill anchor clamps compress two opposite flanks even two opposite flanks of described battery at least simultaneously.Can suppress battery container from side as much as possible like this, in conjunction with vacuumizing the more gases of eliminating.
In order to improve treatment effeciency, in steps A) in, described spill anchor clamps are 2～10 described batteries of clamping side by side simultaneously; Horizontal soil pressure is stamped a rigidity plate body on a plurality of curved surface occluding body, and the depression bar of described forcing press is vertically connected on this rigidity plate body.
In the method for the present invention one very important technical parameters be: in step e) in, described vacuum degree value is-0.06Mpa～-0.10Mpa.And according to the preferred vacuum degree value of reality be-0.095Mpa
For reduce the interference of objectionable impurities and gas as far as possible, in described step F) in, in described vacuum chamber, fed dry air or inert gas for removing vacuum state.
With technique scheme be closely connected for another technical scheme of the present invention promptly: the battery vacuum sealer that a kind of battery vacuum seal method is adopted, this battery comprises rectangle or circular shell and liquid injection hole, this vacuum sealer comprises the occluding body of the spill anchor clamps and the described liquid injection hole of shutoff of vacuum chamber, the described battery of clamping, and also be equiped with forcing press in this vacuum chamber, offer airtight hole on the wall of vacuum chamber by the control circuit of described forcing press; Described occluding body be smooth surface, slightly larger in diameter in the curved body of liquid injection hole, and the depression bar of forcing press is vertically connected on the described curved surface occluding body.
But the structure of concrete choice structure of some of device of the present invention and optimization is: described curved surface occluding body is one of them or several combination of spherosome, hemisphere, oval ball, cone table, billiard table body.Described spill anchor clamps comprise a bottom surface and three or four clamping sides.The clamping size adjustable of described spill anchor clamps, size adjustable can realize by guide rail and chute that screw rod is regulated; Described closing device also comprises the rigidity plate body of gland on a plurality of occluding body.Described curved surface occluding body is metal or non-metallic material.
In a word, method and apparatus of the present invention improve have be easy to implement, advantage effective, with low cost; Confirm through practice, method of the present invention is compared traditional vacuum seal method and device, can make the recoverable amount of sealing the electrolyte of back in the battery increase by 5%～10%, the size fluctuation that can make battery case is reduced to less than 10% from original 15%～20%.
Below, with accompanying drawing technical solution of the present invention is described further in conjunction with specific embodiments.
[description of drawings]
Fig. 1 is the overall structure schematic diagram of rectangular battery vacuum sealer embodiment of the present invention.
[embodiment]
Embodiment 1:
The vacuum seal method of a kind of circular batteries as shown in Figure 1 and closing device embodiment thereof, this vacuum sealer comprises the spill anchor clamps 3 of vacuum chamber 1, clamping battery 2 and the stainless steel ball 4 of shutoff liquid injection hole (not detailed showing), the smooth surface of stainless steel ball 4, slightly larger in diameter are in liquid injection hole, and also be equiped with air-cylinder type forcing press 5 in this vacuum chamber 1, offer airtight hole 1-0 and gas vent 1-1 and bleeding point 1-2 on the wall of vacuum chamber 1 by the control tracheae 6 of forcing press 5; Be connected with the foot switch 7 of control air-flow on the tracheae 6, and the depression bar 5-1 of forcing press 5 vertically passes through rigidity plate body 8 glands on a plurality of stainless steel balls 4.Spill anchor clamps 3 comprise a bottom surface 3-0 and three clamping side 3-1,3-2,3-3.Spill anchor clamps 3 have guide rail that screw rod regulates and chute to regulate size (detailed showing).
Embodiment 2:
Closing device embodiment liquid as shown in Figure 1 also can be used for the vacuum seal of rectangular battery, and its concrete structure and schematic diagram reference this vacuum sealer as shown in Figure 1 fully are embodiment 1, no longer are repeated in this description at this.
Claims (10)
1. battery vacuum seal method, described battery comprises rectangle or circular shell and liquid injection hole, described mouth-sealing method comprises the steps: A, the liquid injection hole of the battery after will changing into through overcharging is fixed in the spill anchor clamps up; B, on described liquid injection hole, place slightly larger in diameter in the curved surface occluding body of liquid injection hole; C, on described curved surface occluding body the vertical forcing press depression bar that connects; D, place vacuum chamber to vacuumize described battery and spill anchor clamps and described forcing press; E, when the vacuum degree value reach-0.06Mpa～-during 0.10Mpa, start described depression bar downwards the described curved surface occluding body of pushing progressively to seal described liquid injection hole; Vacuum state in F, the described vacuum chamber of releasing obtains the battery that exhaust is sealed, and battery is taken out.
2. battery vacuum seal method as claimed in claim 1 is characterized in that: in the described steps A, described spill anchor clamps are 2～10 described batteries of clamping side by side simultaneously; Horizontal soil pressure is stamped a rigidity plate body on a plurality of curved surface occluding body, and the depression bar of described forcing press is vertically connected on this rigidity plate body.
3. battery vacuum seal method as claimed in claim 1 or 2 is characterized in that: in described steps A, described spill anchor clamps compress two opposite flanks of described battery at least simultaneously.
4. battery vacuum seal method as claimed in claim 3 is characterized in that: in described step e, described vacuum degree value is-0.095Mpa.
5. battery vacuum seal method as claimed in claim 3 is characterized in that: in described step F, fed dry air or inert gas for removing vacuum state in described vacuum chamber.
6. battery vacuum sealer that is adopted as battery vacuum seal method as described in one of claim 1～5, described battery comprises rectangle or circular shell and liquid injection hole, described vacuum sealer comprises the occluding body of the spill anchor clamps and the described liquid injection hole of shutoff of vacuum chamber, the described battery of clamping, it is characterized in that: also be equiped with forcing press in the described vacuum chamber, offer airtight hole on the wall of described vacuum chamber by the control circuit of described forcing press; Described occluding body be smooth surface, slightly larger in diameter in the curved body of described liquid injection hole, the depression bar of described forcing press is vertically connected on the described curved surface occluding body.
7. battery vacuum sealer as claimed in claim 6 is characterized in that: described curved surface occluding body is one of them or several combination of spherosome, hemisphere, oval ball, cone table, billiard table body.
8. battery vacuum sealer as claimed in claim 6 is characterized in that: described spill anchor clamps comprise a bottom surface and three or four clamping sides.
9. battery vacuum sealer as claimed in claim 6 is characterized in that: the clamping size adjustable of described spill anchor clamps; Described closing device also comprises the rigidity plate body of gland on a plurality of occluding body.
10. battery vacuum sealer as claimed in claim 6 is characterized in that: described curved surface occluding body is metal or non-metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100273950A CN100403578C (en) | 2004-06-01 | 2004-06-01 | Method and apparatus for battery vacuum sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100273950A CN100403578C (en) | 2004-06-01 | 2004-06-01 | Method and apparatus for battery vacuum sealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1705144A CN1705144A (en) | 2005-12-07 |
| CN100403578C true CN100403578C (en) | 2008-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100273950A Expired - Fee Related CN100403578C (en) | 2004-06-01 | 2004-06-01 | Method and apparatus for battery vacuum sealing |
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| CN (1) | CN100403578C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438126C (en) * | 2007-01-23 | 2008-11-26 | 天津丰泽科技有限公司 | Fully automatic vacuum capper for square lithium ion battery and its capping method |
| CN101685889A (en) * | 2008-09-28 | 2010-03-31 | 深圳市比克电池有限公司 | Preparation method of lithium ion battery |
| CN102054577B (en) * | 2009-10-30 | 2014-04-30 | 特变电工衡阳变压器有限公司 | System and method for realizing kerosene vapor-phase drying to on-site assembly transformer |
| CN101944585B (en) * | 2010-08-23 | 2013-07-03 | 八叶(厦门)新能源科技有限公司 | Injection method for lithium battery |
| CN102263206B (en) * | 2011-06-22 | 2013-10-16 | 奇瑞汽车股份有限公司 | Battery gas-discharging equipment and use method thereof |
| CN102800837A (en) * | 2012-08-28 | 2012-11-28 | 江苏力天新能源科技有限公司 | Sealing device for lithium-ion battery |
| CN103000959B (en) * | 2012-12-21 | 2015-03-11 | 力神迈尔斯动力电池系统有限公司 | Lithium ion battery sealing device and method |
| CN106252728B (en) * | 2015-06-10 | 2019-05-31 | 惠州市豪鹏科技有限公司 | A kind of flexible packaged battery core pumping packaging system |
| CN106531956A (en) * | 2016-12-13 | 2017-03-22 | 力信（江苏）能源科技有限责任公司 | Lithium ion power battery vacuum sealing device and sealing process thereof |
| CN108199085A (en) * | 2017-12-21 | 2018-06-22 | 河北银隆新能源有限公司 | A kind of lithium ion battery vacuum seal method |
| CN112072161B (en) * | 2020-09-23 | 2021-11-26 | 广东永邦新能源股份有限公司 | Battery cell packaging equipment and packaging process |
| CN114221098A (en) * | 2021-12-07 | 2022-03-22 | 力神（青岛）新能源有限公司 | Controllable negative pressure automatic sealing method for battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6045944A (en) * | 1997-08-06 | 2000-04-04 | Kabushiki Kaisha Toshiba | Battery and method of manufacturing the same |
| US6117195A (en) * | 1996-10-03 | 2000-09-12 | Wilson Greatbatch Ltd. | Method for hermetically sealing an electrochemical cell |
-
2004
- 2004-06-01 CN CNB2004100273950A patent/CN100403578C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117195A (en) * | 1996-10-03 | 2000-09-12 | Wilson Greatbatch Ltd. | Method for hermetically sealing an electrochemical cell |
| US6045944A (en) * | 1997-08-06 | 2000-04-04 | Kabushiki Kaisha Toshiba | Battery and method of manufacturing the same |
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| Publication number | Publication date |
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| CN1705144A (en) | 2005-12-07 |
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Granted publication date: 20080716 Termination date: 20140601 |