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CN101969139B - Novel lithium ion polymer battery thickness control device - Google Patents

Novel lithium ion polymer battery thickness control device Download PDF

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Publication number
CN101969139B
CN101969139B CN201010237635A CN201010237635A CN101969139B CN 101969139 B CN101969139 B CN 101969139B CN 201010237635 A CN201010237635 A CN 201010237635A CN 201010237635 A CN201010237635 A CN 201010237635A CN 101969139 B CN101969139 B CN 101969139B
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Prior art keywords
battery
thickness
colding pressing
template
control device
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CN101969139A (en
Inventor
许少辉
贾学恒
刘江
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Tianjin Lishen Juyuan New Energy Technology Co.,Ltd.
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Tianjin Lishen Battery JSCL
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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Abstract

The invention discloses a novel lithium ion polymer battery thickness control device. The novel lithium ion polymer battery thickness control device comprises a cold press and a cold pressing template (4), wherein a plurality of hollowed-out grooves (40) are formed on the cold pressing template (4); batteries of which the thickness needs to be controlled are placed in the grooves (40); and the cold press performs cold-pressing formalization on the batteries. In the novel lithium ion polymer battery thickness control device disclosed by the invention, during formation and subsequent processing, the thickness of the lithium ion polymer batteries can be controlled well by performing cold-pressing formalization on the batteries placed on the cold pressing template battery without performing battery clamping operation, so that the capacity of each battery is improved, the quality qualification rate and the whole property of each battery are guaranteed, the production efficiency of the batteries is improved effectively, the production cost of each battery is reduced and important production practice significance is achieved.

Description

A kind of new type lithium ion polymer battery thickness control device
Technical field
The present invention relates to the battery production technical field, particularly relate to a kind of new type lithium ion polymer battery thickness control device.
Background technology
At present; Advantages such as lithium ion battery has the specific energy height, recycles often, memory time is long; Not only on portable electric appts, be used widely like mobile phone, DV and laptop computer; And be widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool, therefore the up-to-standard rate to lithium ion battery requires increasingly high.
Along with the continuous research and development of high-end product, new product often requires increase capacity under the situation that keeps size constancy, and this has proposed harsh more requirement for the size of lithium ion polymer battery, especially aspect thickness.Thickness is the significant dimensions parameter of lithium ion polymer battery, and can its magnitude relationship battery and used, and THICKNESS CONTROL is an important link in the lithium ion battery production process.
Need to prove, if the thickness of battery is excessive, can cause battery directly to be scrapped, can't drop into concrete application, thickness is too small to mean that battery capacity and cycle performance are low, can't satisfy user's daily need for electricity; And meeting in uneven thickness causes battery capacity and cycle performance to produce consistency difference, has influence on the normal serviceability of battery, and therefore, the thickness of battery directly has influence on the performance of lithium ion battery.
At present; The lithium ion battery method for controlling thickness that tradition adopts mainly is: change into and during subsequent treatment at lithium ion polymer battery; Be lined with a slice hard intermediate plate respectively in two ends up and down at battery; Fixed with a plurality of dovetail clampings then, thus make battery change into and the subsequent handling processing procedure in continue to receive the chucking power effect of dovetail folder, thereby the thickness that prevents battery increases; Finish at battery and to change into or before subsequent handling took out from processing apparatus after handling, battery production workman also need unload dovetail folder and intermediate plate one by one again.
But, for above-mentioned traditional lithium ion battery control thickness method because the operation of control thickness accomplished by the battery production workman fully by hand, folder unload battery and up and down during equipment the difficulty of battery production workman operation increase; And every battery all needs No. at least 4 folders to unload operation, and battery production workman's operating efficiency is too low, has had a strong impact on the production efficient of battery.
In addition; The battery of being clamped by dovetail is very easy to take place external short circuit when equipment up and down; Because of accompanying metal dovetail folder on the battery, auxiliary simultaneously intermediate plate and dovetail folder have taken the additional apparatus space, so two lugs of battery touch the dovetail folder easily; Thereby the generation external short circuit, simultaneously up and down lug ruptures easily during battery;
When changing into, have airbag in view of general lithium ion polymer battery, if battery when last equipment with the dovetail clamping, then airbag must bend, fragile relatively encapsulation position easy of crack, it is bad promptly to cause footing to ftracture; And battery receives the clamping of a plurality of dovetail folder; Electrolyte is not easy to get in the pole piece of clamping; Changing into and be unfavorable for that pole piece fully soaks into and absorbs electrolyte during reprocessing; Produce in the subregion easily and analyse the phenomenon of lithium, therefore battery capacity and cycle performance are caused negative effect, have influence on the overall performance of battery.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of new type lithium ion polymer battery thickness control device, it need not to carry out battery clamping operation; Through the setting of colding pressing is the thickness of may command lithium ion polymer battery, thereby has promoted the capacity of battery, has guaranteed the up-to-standard rate and the overall performance of battery; And let battery production workman's operation intensity reduce greatly; Effectively improve the production efficiency of battery, reduced the production cost of battery, guaranteed the useful life of battery; Help improving the market application foreground of manufacturer's battery product, be of great practical significance.
For this reason; The invention provides a kind of new type lithium ion polymer battery thickness control device; Include cold press and cold pressing template 4; The groove 40 that has a plurality of hollow outs on the said template 4 of colding pressing is placed with the battery that needs control thickness in the said groove 40, and said cold press is to the setting of colding pressing of this battery.
Wherein, said groove 40 comprises rectangular segment 41, the length of said rectangular segment 41 and width and the said corresponding coupling of battery that needs control thickness.
Wherein, said groove 40 also comprises the trapezoidal portions 42 that promising airbag is reserved, and said trapezoidal portions 42 is connected with rectangular segment 41.
Wherein, the thickness of said rectangular segment 41 is that battery production producer is predefined, the thickness of final finished battery.
Wherein, the equal place mat in two ends up and down of the said template 4 of colding pressing has polyester PET film 1 and silicagel pad 2.
Wherein, said template 4 tops of colding pressing are disposed with one deck polyester PET film 1, one deck silicagel pad 2 and one deck polyester PET film 1 from top to bottom.
Wherein, said below of colding pressing template 4 is provided with the pallet 7 of colding pressing.
Wherein, the said space of colding pressing template 4 and colding pressing between the pallet 7 is disposed with one deck polyester PET film 1, one deck silicagel pad 2 from top to bottom.
Wherein, said polyester PET film 1 bonds together with silicagel pad 2 usefulness double faced adhesive tapes.
Visible by above technical scheme provided by the invention, compared with prior art, the invention provides a kind of new type lithium ion polymer battery thickness control device; It need not to carry out battery clamping operation changing into when handling with subsequent handling, through on the template of colding pressing, placing the battery setting of colding pressing; Can realize controlling well the thickness of lithium ion polymer battery, thereby promote the capacity of battery, guarantee the up-to-standard rate and the overall performance of battery; And let battery production workman's operation intensity reduce greatly; Effectively improve the production efficiency of battery, reduced the production cost of battery, guaranteed the useful life of battery; Help improving the market application foreground of manufacturer's battery product, be of great practical significance.
Description of drawings
Fig. 1 is the structural representation of the template of colding pressing in a kind of new type lithium ion polymer battery thickness control device provided by the invention;
Fig. 2 is the sketch map of the structure of colding pressing that adopts in a kind of new type lithium ion polymer battery thickness control device provided by the invention;
Among the figure: 1 is the polyester PET film, and 2 is silicagel pad, and 4 are the template of colding pressing, and 40 is groove, and 41 is rectangular segment, and 42 is trapezoidal portions, and 7 are the pallet of colding pressing.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and execution mode.
Fig. 1 is the structural representation of the template of colding pressing in a kind of new type lithium ion polymer battery thickness control device provided by the invention.
Referring to Fig. 1; The invention provides a kind of new type lithium ion polymer battery thickness control device; Can be used in the thickness that carries out control battery in battery formation process and the subsequent handling processing procedure, include cold press and cold pressing template 4, the groove 40 that has six hollow outs on the said template 4 of colding pressing; Be placed with in the said groove 40 and need come the battery of control thickness through the setting of colding pressing, by said cold press to the setting of colding pressing of this battery;
Referring to Fig. 1, in the present invention, said groove 40 comprises rectangular segment 41 and trapezoidal portions 42, and said rectangular segment 41 is connected with trapezoidal portions 42.
In the present invention, the length of said rectangular segment 41 and width and the said corresponding coupling of battery that needs control thickness, and the thickness of said rectangular segment 41 is that battery production producer is predefined, the thickness of final finished battery.
In the present invention; Said trapezoidal portions 42 is reserved for airbag; Be used to place the airbag that polymer Li-ion battery has when carrying out formation process; The airbag that makes in formation process to be had need not bending, has very great help to preventing battery footing cracking tool, can prevent that battery gas in the airbag when colding pressing from strutting the position (cell package position and control cell thickness position) of the said rectangular segment 41 of battery.
For the present invention, through cold press the battery in the groove 40 that is placed on the template 4 of colding pressing is colded pressing, can control the thickness of battery and battery is formalized, make that the thickness of final cold moudling battery is identical with the thickness of groove 40.On concrete the realization, said cold press is colded pressing the setting operation between the formation process and degasification operation of battery to battery.
On concrete the realization, referring to Fig. 2, the equal place mat in two ends up and down of the said template 4 of colding pressing has the polyester PET film 1 and silicagel pad 2 that can insulate, and can prevent that battery is short-circuited and bad order.Concrete structure is: said template 4 tops of colding pressing are disposed with one deck polyester PET film 1, one deck silicagel pad 2 and one deck polyester PET film 1 from top to bottom; Certainly as required; The said template 4 of colding pressing of the present invention can also be polyester PET film 1 and/or the silicagel pad 2 that any number of plies is set; For example can be three layers of silicagel pad 2, can also be three layers of polyester PET film 1, can also be two-layer silicagel pad 2 and one deck polyester PET film 1.Need to prove that 2 layers of upper-lower position relation with 1 layer of polyester PET film of silicagel pad can be selected arbitrarily to set according to user's needs.
For the present invention; On concrete the realization; Referring to Fig. 2, said below of colding pressing template 4 is provided with the pallet 7 of colding pressing, and the said space of colding pressing template 4 and colding pressing between the pallet 7 is disposed with one deck polyester PET film 1, one deck silicagel pad 2 from top to bottom; Certainly, the said polyester PET film 1 and/or the silicagel pad 2 of colding pressing template 4 and colding pressing any number of plies can also be set between the pallet 7.
On concrete the realization, between the adjacent silicagel pad 2 and polyester PET film 1, can bond together with double faced adhesive tape between the adjacent two-layer silicagel pad 2 and between the adjacent two layers polyester PET film 1.
Provide the specific embodiment of a kind of new type lithium ion polymer battery thickness control device provided by the invention below:
With lithium ion polymer battery PP284864AB is example, and the length of this battery is 64mm, and width is 48mm, and thickness is 2.8mm.Battery is after formation process is accomplished; With cold press battery is carried out cold pressing treatment; Requirement cold pressing template 3 hollow out groove 40 size (being length and width) with need the corresponding coupling of lithium ion polymer battery of control thickness; And on concrete the realization, the material thickness of the template of colding pressing 4 is preferably the final thickness less than battery.
Before cold press is colded pressing; At first will need the battery of control thickness to keep being placed in the groove 40 of the template 4 of colding pressing; The below place mat of the said template 4 of colding pressing has one deck polyester PET film 1, one deck silicagel pad 2 and the pallet 7 of colding pressing; The double-layer PET film 1 and the silicagel pad 2 that have bonded together on the upper cover of the said template 4 of colding pressing; And then down the template 4 of colding pressing is colded pressing firmly from the top with cold press; The lithium ion polymer battery that needs control thickness in the cold pressing template 4 and the template of colding pressing is exerted pressure, thereby realizes guaranteeing the battery control that continues to be under pressure, make in the groove 40 thickness of battery finally fix and shape identical with the rectangular segment 41 of said groove 40.
Need to prove that on concrete the realization, the parameter of colding pressing of said cold press is: 6 batteries of at every turn colding pressing, the time of colding pressing is 20 seconds, the pressure of colding pressing is 20KN.
Show through above-mentioned test; Device provided by the invention is joined in the production process of battery, can promote battery production workman's operating efficiency to a great extent, save most personnel and cost of supplementary product input; And guarantee that the cell thickness defective products that is generated obviously reduces; And battery carries out in the process at formation process, need not to carry out battery clamping operation, does not exist owing to the dovetail folder touches short circuit problem and the battery pole ear breakage problem that battery pole ear causes; Therefore the battery waste product that after accomplishing the battery formation process, has short circuit, lug breakage problem obviously reduces, and has reduced the probability of battery footing cracking; The capacity that guarantees battery is greatly improved.In addition, owing to reduced the consumption of a large amount of assistant products, help scene and personal management.
Through utilization the present invention, because battery no external force clamping in charge and discharge process, thereby the pole piece of battery can fully soak into Electolyte-absorptive, helps improving the capacity and the whole circular performance of battery, is not easy to produce the problem of analysing lithium simultaneously.
Through utilization the present invention, in the battery formation process, cold pressing, can have better setting effect to battery, both can reduce the cell thickness defective products in the postorder operation, can prevent that again the thickness of battery from rebounding afterwards.
For the present invention; On concrete the realization; Can adopt the thinking of stressed conversion, through when adopting traditional dovetail folder clamping battery to control the method for cell thickness, counting cell is suffered chucking power summation and the product of time in formation process and subsequent handling processing; Be converted into the present invention at the control stressed product with the time of battery during cell thickness of colding pressing, make it the control effect that finally reaches identical.
In sum, compared with prior art, a kind of new type lithium ion polymer battery thickness control device provided by the invention; It need not to carry out battery clamping operation changing into when handling with subsequent handling, through on the template of colding pressing, placing the battery setting of colding pressing; Can realize controlling well the thickness of lithium ion polymer battery, thereby promote the capacity of battery, guarantee the up-to-standard rate and the overall performance of battery; And let battery production workman's operation intensity reduce greatly; Effectively improve the production efficiency of battery, reduced the production cost of battery, guaranteed the useful life of battery; Help improving the market application foreground of manufacturer's battery product, be of great practical significance.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims (5)

1. lithium ion polymer battery thickness control device; It is characterized in that; Include cold press and cold pressing template (4); Have the groove (40) of a plurality of hollow outs on the said template of colding pressing (4), said groove is placed with the battery that needs control thickness in (40), and said cold press is to the setting of colding pressing of this battery;
Said groove (40) comprises rectangular segment (41), the length of said rectangular segment (41) and width and the said corresponding coupling of battery that needs control thickness;
Said groove (40) also comprises the trapezoidal portions (42) that promising airbag is reserved, and said trapezoidal portions (42) and rectangular segment (41) are connected;
The equal place mat in two ends up and down of the said template of colding pressing (4) has polyester PET film (1) and silicagel pad (2);
The below of the said template of colding pressing (4) is provided with the pallet of colding pressing (7).
2. cell thickness control device as claimed in claim 1 is characterized in that, the thickness of said rectangular segment (41) is that battery production producer is predefined, the thickness of final finished battery.
3. cell thickness control device as claimed in claim 1 is characterized in that, the said template of colding pressing (4) top is disposed with one deck polyester PET film (1), one deck silicagel pad (2) and one deck polyester PET film (1) from top to bottom.
4. cell thickness control device as claimed in claim 1 is characterized in that, the space between said template of colding pressing (4) and the pallet of colding pressing (7) is disposed with one deck polyester PET film (1), one deck silicagel pad (2) from top to bottom.
5. cell thickness control device as claimed in claim 4 is characterized in that, said polyester PET film (1) and silicagel pad (2) bond together with double faced adhesive tape.
CN201010237635A 2010-07-27 2010-07-27 Novel lithium ion polymer battery thickness control device Active CN101969139B (en)

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CN101969139B true CN101969139B (en) 2012-10-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102593520B (en) * 2012-02-20 2014-08-27 宁德新能源科技有限公司 Method for improving hardness of lithium ion cell
CN103050726B (en) * 2012-12-18 2014-12-17 天津力神电池股份有限公司 Mould for manufacturing bendable polymer batteries

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2503614Y (en) * 2001-09-25 2002-07-31 厦门宝龙工业股份有限公司 Continuous plat-press machine for producing polymer lithium ion battery
CN1913206A (en) * 2005-03-07 2007-02-14 三星Sdi株式会社 Membrane-electrode assembly, method for preparing the same, and fuel cell system comprising the same
CN201289373Y (en) * 2008-10-07 2009-08-12 东莞市斯宇自动化设备有限公司 Tester for cold/hot pressing thickness of polymer lithium ion battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2503614Y (en) * 2001-09-25 2002-07-31 厦门宝龙工业股份有限公司 Continuous plat-press machine for producing polymer lithium ion battery
CN1913206A (en) * 2005-03-07 2007-02-14 三星Sdi株式会社 Membrane-electrode assembly, method for preparing the same, and fuel cell system comprising the same
CN201289373Y (en) * 2008-10-07 2009-08-12 东莞市斯宇自动化设备有限公司 Tester for cold/hot pressing thickness of polymer lithium ion battery

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Effective date of registration: 20230301

Address after: 300000 No.38 Haitai South Road, Huayuan Industrial Zone (outside the ring), High-tech Zone, Binhai New Area, Tianjin

Patentee after: Tianjin Juyuan New Energy Technology Co.,Ltd.

Address before: 300384 Tianjin Xiqing District Binhai hi tech Industrial Development Zone (outer ring) 38 Haitai South Road

Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd.

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Address after: No.38 Haitai South Road, Huayuan Industrial Zone (Huanwai), Binhai High tech Zone, Binhai New Area, Tianjin, 300000

Patentee after: Tianjin Lishen Juyuan New Energy Technology Co.,Ltd.

Country or region after: China

Address before: 300000 No.38 Haitai South Road, Huayuan Industrial Zone (outside the ring), High-tech Zone, Binhai New Area, Tianjin

Patentee before: Tianjin Juyuan New Energy Technology Co.,Ltd.

Country or region before: China