CN204424392U - A kind of polymer Li-ion battery sealer mechanism of improvement - Google Patents

A kind of polymer Li-ion battery sealer mechanism of improvement Download PDF

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Publication number
CN204424392U
CN204424392U CN201520177995.9U CN201520177995U CN204424392U CN 204424392 U CN204424392 U CN 204424392U CN 201520177995 U CN201520177995 U CN 201520177995U CN 204424392 U CN204424392 U CN 204424392U
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China
Prior art keywords
stator
heat accumulation
accumulation sheet
pressing plate
end socket
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CN201520177995.9U
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Chinese (zh)
Inventor
李磊
胡士锋
徐晓玲
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HEBEI GLOBE SUPER POWER NEW ENERGY TECHNOLOGY DEVELOPMENT CORP
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Hebei Shenzhou Super Power New Energy Technology Development Co Ltd
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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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  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The end socket pressing plate the utility model discloses a kind of polymer Li-ion battery sealer mechanism of improvement, it comprises lift cylinder, promoting by lift cylinder and be fixed on the heat storage blocks of end socket pressing plate lower end; Described heat storage blocks comprises stator and the heat accumulation sheet of mutual stacked compression, described end socket pressing plate, stator and heat accumulation sheet are distributed with corresponding bolt hole, described stator wedging end socket pressing plate, and be fastened by screens bolt and end socket pressing plate on corresponding bolt hole; Described heat accumulation sheet is superimposed upon stator side side by side, and on corresponding bolt hole by hold-down bolt be fastened at stator, described stator and heat accumulation sheet and battery treat sealer perpendicular; Heater strip is provided with in described stator; The heat storage blocks of described stator and heat accumulation sheet composition is provided with layer of silica gel in the one side sealed.The utility model has the advantages that easy to use, applicability is strong, heat-seal is effective and encapsulation is stable.

Description

A kind of polymer Li-ion battery sealer mechanism of improvement
Technical field
The utility model belongs to battery sealer field of tool, is specifically related to a kind of polymer Li-ion battery sealer mechanism of improvement, is particularly useful for the closedtop welding colloidal sol of 300Ah and above high capacity cell.
Background technology
Because polymer Li-ion battery shell is together as sealed cell shell with aluminum plastic film heat-seal, wherein battery top aluminum plastic film will with battery just, negative electrode lug is molten welded together through high temperature, but it is 20pcs that the sealer pressure head of closedtop machine original device meets the number of plies only, lug specification is in the aluminum plastic film heat-seal of the battery core of below 280mm, when making vast capacity or high capacity cell, continue to use the encapsulation condition making small-capacity cells, namely pressure is 0.6Mpa, temperature is 195 ± 5 DEG C, time is each 1 time of 17s positive and negative, but often easily occur encapsulating because of lug the air inlet loosely caused after fluid injection, leakage, corrode bad, illustrate that adopting the encapsulation condition making small-capacity cells not to be suitable for makes vast capacity or high capacity cell, said vast capacity refers to and is more than or equal to 500AH, Large Copacity refers to and is more than or equal to 300AH.
The solution of present stage extends the heat-sealing time, generally packaging time is increased to 21s, although packaging effect makes moderate progress, the situation causing non-lug place to have envelope because packaging time is long, and barrier film has thawing phenomenon, cause the adverse consequences that battery core burn into non-lug place is easily broken.
In addition, when pressing down welding, originally by strip lower platen, heat conduction to battery top is carried out the molten weldering of high temperature, but in fact there is partial heat can through just, negative electrode lug is transmitted to battery main body and gets on, and battery capacity is larger, main body is also larger, and main body is larger, it is also more that heat is transmitted on battery main body, heat can be siphoned away by battery main body, therefore battery larger closedtop soldering and sealing temperature more not capacity reach, in view of the foregoing, when producing small-sized battery core, operable sealer pressure head can not re-use when producing large-scale battery core, so not only give processing large, the different battery of low capacity is made troubles, change sealer pressure head to waste time and energy, and the sealer pressure head making a large amount of different size causes the wasting of resources, add production cost.
For the requirement of soldering and sealing, can not temperature too low, can not temperature too high, low do not weld, high aluminum plastic film excessively molten becoming fragile splits.Therefore jumbo battery sealing does not solve closedtop problem by improving temperature, otherwise have the position colloidal sol of lug bad, weldering loosely, and not having the place of lug there will be, aluminum plastic film is excessively molten becomes fragile, and capacity cracking, the problem such as cause the leakage of battery later stage, aerogenesis, hydraulic performance decline serious.
Utility model content
Technical problem to be solved in the utility model there is provided easy to use, applicability is strong, heat-seal is effective and encapsulate the polymer Li-ion battery sealer mechanism of stable improvement.
The utility model adopts following technical scheme:
A polymer Li-ion battery sealer mechanism for improvement, it comprises lift cylinder, the end socket pressing plate that promotes by lift cylinder and be fixed on the heat storage blocks of end socket pressing plate lower end;
Described heat storage blocks comprises stator and the heat accumulation sheet of mutual stacked compression, described end socket pressing plate, stator and heat accumulation sheet are distributed with corresponding bolt hole, described stator wedging end socket pressing plate, and be fastened by screens bolt and end socket pressing plate on corresponding bolt hole; Described heat accumulation sheet is superimposed upon stator side side by side, and on corresponding bolt hole by hold-down bolt be fastened at stator, described stator and heat accumulation sheet and battery treat sealer perpendicular.
To the further improvement of this programme, in described stator, be provided with heater strip.
To the further improvement of this programme, the heat storage blocks of described stator and heat accumulation sheet composition is provided with layer of silica gel in the one side sealed.
To the further improvement of this programme, described layer of silica gel is fixed by Teflon and heat storage blocks.
To the further improvement of this programme, the stator and the heat accumulation sheet that are provided with the side of layer of silica gel are arranged in groove, and described layer of silica gel is arranged in the groove that stator and heat accumulation sheet form.
To the further improvement of this programme, described stator and heat accumulation sheet adopt copper material.
To the further improvement of this programme, described hold-down bolt is evenly distributed successively on heat accumulation sheet, and described screens bolt is evenly distributed successively on end socket pressing plate.
To the further improvement of this programme, according to the battery capacity size that will seal, the quantity of described heat accumulation sheet is set, battery capacity is larger, the quantity of the heat accumulation sheet that will increase in stator side is also more, the heating surface area of the thermal conduction portions be namely made up of stator and heat accumulation sheet is also larger, improves quantity of heat storage with this.
To the further instruction of this programme, described heat accumulation sheet both can be arranged on the both sides of stator, also can be arranged on the side of stator; When heat accumulation sheet is arranged on the both sides of stator, the heat accumulation sheet of described stator arranged on both sides can length different, a groove is arranged in by length, described layer of silica gel is placed in this groove, make layer of silica gel difficult drop-off and movement, in order to fix further, can with Teflon, layer of silica gel and heat storage blocks be fixed tight again; When heat accumulation sheet is arranged on stator side, the lower edge of described heat accumulation sheet should flush with the lower edge of stator.
The beneficial effects of the utility model are:
(1) the utility model can freely be dismantled by setting, the stator of adjustment width and heat accumulation sheet, make the end socket size that carries out sealing adjustable, be convenient to flexible Application, when reducing heat accumulation sheet for during ting model battery, when for increasing heat accumulation sheet during high capacity cell, namely by reducing or improve quantity of heat storage to realize a machine both to have can be used for the function that ting model battery also can be used for high capacity cell, time saving and energy saving, avoid changing sealer pressure head, reduce cost simultaneously, be provided with the stator inserting end socket pressing plate simultaneously, also can not depart from because of distortion and end socket pressing plate after expanding after making to be heated, on the contrary can be more firm regularly because expanding, and the part that stator inserts end socket pressing plate is provided with bolt hole, by screens bolt, stator is fastened on end socket pressing plate further, the part not inserting end socket pressing plate at stator is also provided with respective bolt holes, be convenient to by hold-down bolt make heat accumulation sheet and stator fastening, the stability of the encapsulation of great raising.
(2) the utility model proposes no longer by improving temperature, closedtop problem is solved to the heat-sealing of high capacity cell, but the temperature of closedtop position is improved by increasing dismountable stator and heat accumulation sheet, and then solve high capacity cell closedtop not prison welding, the problems such as the leakage of battery later stage, aerogenesis.
(3) original packaging time is 21s, and the utility model is 17s by packaging time after increase stator and heat accumulation sheet, shortens packaging time, improves packaging efficiency.
(4) stator in the utility model and heat accumulation sheet are all that the mode be fastened by bolts is fixed, easy accessibility, simple to operation.
(5) add the layer of silica gel for heat conduction in the utility model, after its pressurized, there is certain ductility, make lug and do not have the place of lug to be heated more even, the pressing action of end socket pressing plate is had to the effect of buffering and damping simultaneously.
Accompanying drawing explanation
Fig. 1 is the using state schematic diagram of the utility model embodiment 1.
Fig. 2 is the using state schematic diagram of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 2.
Wherein, 1 battery, 2 heat storage blocks, 2-1 heat accumulation sheet, 2-2 stator, 3 layer of silica gel, 4 hold-down bolts, 5 negative electrode lugs, 6 anode ears, 7 end socket pressing plates, 8 lift cylinders, 9 screens bolts.
Embodiment
Below in conjunction with accompanying drawing 1 ~ 3, the utility model is described in further detail.
Embodiment 1, with reference to Fig. 1: it comprises lift cylinder 8, the end socket pressing plate 7 that promotes by lift cylinder 8 and the heat storage blocks 2 being fixed on end socket pressing plate 7 lower end;
Described heat storage blocks 2 comprises stator 2-2 and the heat accumulation sheet 2-1 of mutual stacked compression, described end socket pressing plate 7, stator 2-2 and heat accumulation sheet 2-1 are distributed with corresponding bolt hole, described stator 2-2 wedges end socket pressing plate 7, and is fastened by screens bolt 9 and end socket pressing plate 7 on corresponding bolt hole; Described heat accumulation sheet 2-1 is superimposed upon stator 2-2 side side by side, and on corresponding bolt hole by hold-down bolt 4 be fastened at stator 2-2, described stator 2-2 and heat accumulation sheet 2-1 and battery 1 treat sealer perpendicular.
To the further improvement of this programme, in described stator 2-2, be provided with heater strip.
To the further improvement of this programme, the heat storage blocks 2 that described stator 2-2 and heat accumulation sheet 2-1 forms is provided with layer of silica gel 3 in the one side sealed.
To the further improvement of this programme, described layer of silica gel 3 is fixed by Teflon and heat storage blocks 2.
To the further improvement of this programme, described stator 2-2 and heat accumulation sheet 2-1 adopts copper material.
To the further improvement of this programme, described hold-down bolt 4 is evenly distributed successively on heat accumulation sheet 2-1, and described screens bolt 9 is evenly distributed successively on end socket pressing plate 7.
With reference to Fig. 2 ~ 3, embodiment 2 is the further improvement to this programme, and the stator 2-2 and the heat accumulation sheet 2-1 that are provided with the side of layer of silica gel 3 are arranged in groove, and described layer of silica gel 3 is arranged in the groove that stator 2-2 and heat accumulation sheet 2-1 forms.
To the further improvement of this programme, according to the battery capacity size that will seal, the quantity of described heat accumulation sheet 2-1 is set, battery capacity is larger, the quantity of the heat accumulation sheet 2-1 that will increase in stator 2-2 side is also more, the heating surface area of the thermal conduction portions be namely made up of stator 2-2 and heat accumulation sheet 2-1 is also larger, improves quantity of heat storage with this.
To the further instruction of this programme, described heat accumulation sheet 2-1 both can be arranged on the both sides of stator 2-2, also can be arranged on the side of stator 2-2; When heat accumulation sheet 2-1 is arranged on the both sides of stator 2-2, the heat accumulation sheet 2-1 of described stator 2-2 arranged on both sides can length different, a groove is arranged in by length, described layer of silica gel 3 is placed in this groove, make layer of silica gel 3 difficult drop-off and movement, in order to fix further, can with Teflon, layer of silica gel 3 and heat storage blocks 2 be fixed tight again; When heat accumulation sheet 2-1 is arranged on stator 2-2 side, the lower edge of described heat accumulation sheet 2-1 should flush with the lower edge of stator 2-2.
It is of the present utility model that to realize principle as follows:
According to the battery capacity size that will seal, the quantity of described heat accumulation sheet 2-1 is set, battery capacity is larger, the quantity of the heat accumulation sheet 2-1 that will increase in stator 2-2 side is also more, the heating surface area of the thermal conduction portions be namely made up of heat accumulation sheet 2-1 and stator 2-2 is also larger, improves quantity of heat storage with this.
Polymer battery shell is together as sealed cell shell with aluminum plastic film heat-seal, wherein battery top aluminum plastic film will with the anode ear 6 of battery, negative electrode lug 5 is molten welded together through high temperature, during equipment welding, end socket pressing plate 7 is embedded with one section of copper stator 2-2, heating wire is had in it, during welding battery, end socket pressing plate 7 with heat accumulation sheet 2-1 declines under the drive of lift cylinder 8, be pressed in aluminum plastic film and the anode ear 6 of battery, on negative electrode lug 5, its thermosol is made to be welded on one piece, according to the needs of battery capacity size, heat accumulation sheet 2-1 is installed at stator 2-2 side on demand.
During because pressing down welding, heat conducts to heat accumulation sheet 2-1 through stator 2-2, and the heat on heat accumulation sheet 2-1 can be transmitted to battery main body get on through anode ear 6, negative electrode lug 5 again, aluminum plastic film and lug peptization is imitated and reaches specification.
Specific works process is as follows:
1, the fine copper heat-conducting piece of the long 1200mm be made up of heat accumulation sheet 2-1 and stator 2-2, a wide 0mm, high 15mm is increased for 7 times at end socket pressing plate;
2, be washed in the Pocket of type by treating that the battery core of heat-sealing battery 1 installs to, punching hole size is determined according to battery core thickness;
3, adjust encapsulation parameter, pressure is 0.6Mpa, and temperature is 195 ± 5 DEG C, and the time is 17s positive and negative, each 1 time, because soft envelope when sealer pressure head declines, 1 encapsulation can only ensure the packaging effect of upper cover, so want positive and negative respectively to encapsulate 1 time.Hard envelope can certainly be done, but just poor for the versatility of battery core, and the model that hard front cover cover end socket can only fix, the battery core cost producing different size like that also just adds.Soft envelope of comparing is not by the defining of gauge size, and is soft envelope so conventional.Soft envelope does a groove exactly under sealer pressure head, and object is that the layer of silica gel 3 be placed in groove is not easily run, then with Teflon, layer of silica gel 3 is fixing tight together with end socket pressing plate 7;
4, the frock clamp installing the battery core of battery 1 is directly pushed in closedtop machine, press encapsulation button, lift cylinder 8 drives the heat accumulation sheet 2-1 of end socket pressing plate 7 and its underpart and stator 2-2 to complete and presses down, namely equipment perform encapsulation action, after first encapsulation action completes, the battery core reverse side of battery 1 is same as the 1st encapsulation, namely completes whole closedtop action.
The above execution mode is only preferred embodiment of the present utility model, and is not the exhaustive of the feasible enforcement of the utility model.For persons skilled in the art, to any apparent change done by it under the prerequisite not deviating from the utility model principle and spirit, all should be contemplated as falling with within claims of the present utility model.

Claims (7)

1. the polymer Li-ion battery sealer mechanism improved, is characterized in that: it comprises lift cylinder (8), the end socket pressing plate (7) that promotes by lift cylinder (8) and the heat storage blocks (2) being fixed on end socket pressing plate (7) lower end;
Described heat storage blocks (2) comprises stator (2-2) and the heat accumulation sheet (2-1) of mutual stacked compression, described end socket pressing plate (7), stator (2-2) and heat accumulation sheet (2-1) are distributed with corresponding bolt hole, described stator (2-2) wedges end socket pressing plate (7), and is fastened by screens bolt (9) and end socket pressing plate (7) on corresponding bolt hole; Described heat accumulation sheet (2-1) is superimposed upon stator (2-2) side side by side, and on corresponding bolt hole by hold-down bolt (4) be fastened at stator (2-2), described stator (2-2) and heat accumulation sheet (2-1) and battery (1) treat sealer perpendicular.
2. the polymer Li-ion battery sealer mechanism of a kind of improvement according to claim 1, is characterized in that: be provided with heater strip in described stator (2-2).
3. the polymer Li-ion battery sealer mechanism of a kind of improvement according to claim 1, is characterized in that: the heat storage blocks (2) that described stator (2-2) and heat accumulation sheet (2-1) form is provided with layer of silica gel (3) in the one side sealed.
4. the polymer Li-ion battery sealer mechanism of a kind of improvement according to claim 3, is characterized in that: described layer of silica gel (3) is fixed by Teflon and heat storage blocks (2).
5. the polymer Li-ion battery sealer mechanism of a kind of improvement according to claim 3 or 4, it is characterized in that: stator (2-2) and the heat accumulation sheet (2-1) of placing described layer of silica gel (3) side are arranged in groove, described layer of silica gel (3) is arranged in the groove that stator (2-2) and heat accumulation sheet (2-1) form.
6. the polymer Li-ion battery sealer mechanism of a kind of improvement according to claim 1, is characterized in that: described stator (2-2) and heat accumulation sheet (2-1) adopt copper material.
7. the polymer Li-ion battery sealer mechanism of a kind of improvement according to claim 1, it is characterized in that: described hold-down bolt (4) is evenly distributed successively on heat accumulation sheet (2-1), described screens bolt (9) is evenly distributed successively on end socket pressing plate (7).
CN201520177995.9U 2015-03-27 2015-03-27 A kind of polymer Li-ion battery sealer mechanism of improvement Active CN204424392U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114005950A (en) * 2018-09-09 2022-02-01 深圳市格林晟科技有限公司 Die cutting and bag making integrated machine and die cutting and bag making method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114005950A (en) * 2018-09-09 2022-02-01 深圳市格林晟科技有限公司 Die cutting and bag making integrated machine and die cutting and bag making method
CN114005950B (en) * 2018-09-09 2024-01-05 深圳市格林晟科技有限公司 Method for producing battery pole piece by using die-cutting and bag-making integrated machine and battery pole piece

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TR01 Transfer of patent right

Effective date of registration: 20191118

Address after: 350000 No. 68 Hongshanyuan Road, Gulou District, Fuzhou City, Fujian Province

Patentee after: Fujian Bidding and Purchasing Group Co.,Ltd.

Address before: 055250, Julu County, Xingtai City, Hebei County Industrial Zone

Patentee before: HEBEI GLOBE SUPER POWER NEW ENERGY TECHNOLOGY DEVELOPMENT Corp.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20210119

Address after: 055250 County Industrial Zone, Julu County, Xingtai City, Hebei Province

Patentee after: HEBEI GLOBE SUPER POWER NEW ENERGY TECHNOLOGY DEVELOPMENT Corp.

Address before: No.68, hongshanyuan Road, Gulou District, Fuzhou City, Fujian Province 350000

Patentee before: Fujian Bidding and Purchasing Group Co.,Ltd.

TR01 Transfer of patent right
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Effective date of registration: 20210127

Granted publication date: 20150624

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Date of cancellation: 20240127

Granted publication date: 20150624

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