CN103875093A - 叠层型二次电池的制造方法 - Google Patents
叠层型二次电池的制造方法 Download PDFInfo
- Publication number
- CN103875093A CN103875093A CN201280049464.0A CN201280049464A CN103875093A CN 103875093 A CN103875093 A CN 103875093A CN 201280049464 A CN201280049464 A CN 201280049464A CN 103875093 A CN103875093 A CN 103875093A
- Authority
- CN
- China
- Prior art keywords
- thermoplastic resin
- mould
- resin material
- shape space
- safe edge
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 39
- 229920005992 thermoplastic resin Polymers 0.000 claims description 38
- 239000012528 membrane Substances 0.000 claims description 36
- 238000007664 blowing Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 5
- 235000008429 bread Nutrition 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 16
- 239000007924 injection Substances 0.000 abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 9
- 239000011347 resin Substances 0.000 abstract description 9
- 239000012943 hotmelt Substances 0.000 abstract description 6
- 229920001169 thermoplastic Polymers 0.000 abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000001012 protector Effects 0.000 abstract 2
- 238000007493 shaping process Methods 0.000 description 16
- 238000003466 welding Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 208000034189 Sclerosis Diseases 0.000 description 5
- 239000004831 Hot glue Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 206010059866 Drug resistance Diseases 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001002 morphogenetic effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/174—Applying a pressurised fluid to the outer surface of the injected material inside the mould cavity, e.g. for preventing shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0058—Liquid or visquous
- B29K2105/0067—Melt
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
开始将热熔树脂材料填充或注入到模具(7)的成形品形状空间(12)之后且在热熔树脂材料达到软化点以下之前,从空气喷射口(14)向用于分隔形成该成形品形状空间(12)的型面与热熔树脂层的表面之间喷射压缩空气。通过喷射该压缩空气而使在护边体(6)的表面积极产生“缩痕”而形成凹部(Q),同时在护边体(6)的表面与型面之间形成间隙(G)。由此,在利用热塑性的热熔树脂材料将筋状的护边体(6)与叠层膜外装壳体(5)的长边热熔接部(5c)一体成形时,自模具的脱模性良好。
Description
技术领域
本发明涉及一种叠层型二次电池(电池组或者组电池)的制造方法,更详细而言,涉及一种利用热熔粘接剂将筋状的护边体与收容有电池元件的叠层膜外装体的周缘部一体成形的方法。
背景技术
作为这种叠层型二次电池组的结构公知有如下结构:例如,如专利文献1所记载的那样,将由正极、负极以及隔离片构成的电池元件与电解液一起收容于叠层膜外装体并进行封装,并利用热熔树脂、优选的是离子键树脂气密地覆盖叠层膜外装体的周围,从而形成加强用的框体。
在制造专利文献1所记载的那样的叠层型二次电池时,因为需要使作为框体的材料的热熔树脂具有粘接性,所以,根据所使用的热熔树脂的种类会有成形部贴在模具上而导致自模具的脱模性变得极差的倾向。因此,再加上用于收容电池元件的叠层膜外装体其自身刚性不高,需要谨慎进行开模后的脱模以及取出产品。其结果,在叠层型二次电池的量产化时,实现每次注射的成形周期的缩短化也存在极限。
此外,虽然通过使用脱模剂来对自模具的脱模性进行某种程度改善,但增加脱模剂的涂敷作业而使生产周期缩短化方面也存在极限,不得已而提高成本,因此不是优选的。
专利文献1:日本特开2007-128792号公报
发明内容
发明要解决的问题
本发明是着眼于这样的课题而做成的,其提供一种在利用热塑性的热熔粘接剂将筋状的护边体与叠层膜外装体的周缘部一体成形时、大幅改善了自模具的脱模性的叠层型二次电池的制造方法。
用于解决问题的方案
本发明是利用热熔树脂材料以将收容有电池元件的叠层膜外装体的端缘以及该端缘附近的正反两个面包围的方式进行模塑,在将筋状的护边体与叠层膜外装体的周缘部一体成形时,在开始将热熔树脂材料填充或注入到模具的成形品形状空间之后且在热熔树脂材料达到软化点以下之前,向用于分隔形成该成形品形状空间的型面与热熔树脂层的表面之间导入压缩空气。
采用本发明,在开始将热熔树脂材料填充或注入到成形品形状空间之后且在热熔树脂材料达到软化点以下之前,通过向分隔该成形品形状空间的型面与热熔树脂层的表面之间导入压缩空气,在护边体中的距离中心部以外的型面较近的部分恰好能促进产生“缩痕”,同时,能促进靠近型面的部分的冷却。因此,在减小脱模阻力的同时减小成形后的护边体的表面与型面之间的接触面积而脱模性良好,能实现在量产叠层型二次电池时,缩短其生产周期。此外,能够停止使用脱模剂。
附图说明
图1是表示适用本发明的叠层型锂离子二次电池的外观形状的说明图。
图2是沿着图1的a-a线的放大剖面说明图。
图3是负责图2所示的护边体的成形的模具的主要部分剖视说明图。
图4是同样负责图2所示的护边体的成形的模具的主要部分剖视说明图。
图5是仅图3、图4的下模的主要部分立体图。
图6是基于图3、图4所示的模具结构的护边体的成形时的时间图。
图7是在图3、图4所示的模具结构中的气体喷射功能的说明图。
具体实施方式
图1以下的附图是表示用于执行本发明的更具体的实施方式,尤其是图1是表示作为制造对象的叠层型二次电池的一个例子的薄型的叠层型锂离子二次电池(以下,简称“电池”)的外观形状,图2是表示图1的沿着a-a线的放大剖视图。而且,上述电池例如作为电动汽车用的锂离子蓄电池的电池单元来使用。
如图1、图2所示,电池1被矩形形状的叠层膜外装壳体5包装,该叠层膜外装壳体5作为叠层膜外装体,是以正极端子2a和负极端子3a向外部突出的方式由上下两张叠层膜5a、5b构成的,作为电池元件的正极2、负极3以及隔离片4与电解液一起被封装于叠层膜外装壳体的内部,并且利用热熔接将叠层膜外装壳体5的四周密封。
而且,在图2中为了简单化,只图示了由正极2、负极3以及隔离片4构成的一组层叠体组,但实际上是将多组层叠体组层叠起来而收容于叠层膜外装壳体5。此外,作为形成叠层膜外装壳体5的上下的叠层膜5a、5b,例如使用以热熔接性树脂膜覆盖铝箔而成的复合结构的膜。
虽然如上述那样利用热熔接将叠层膜外装壳体5封装从而确保叠层膜外装壳体5的四周具有足够的气密性,但例如针对叠层膜外装壳体5的周缘、尤其是长边热熔接部5c,为了进一步提高气密性、封装力以及刚性,为了加强和保护该长边热熔接部5c,而将由热塑性热熔树脂材料构成的护边体6沿着长度方向进行模塑而与长边热熔接部5c形成为一体。更具体而言,以将叠层膜外装体5的长边热熔接部5c的端缘与该端缘附近的正反两个面包裹的方式利用由热熔树脂材料构成的截面为四边形的筋状的护边体6进行模塑而形成为一体。
该护边体6的成形如下所述:在利用叠层膜外装壳体5将如上所述的电池元件包装起来而组装成电池1之后,将该电池1连同叠层膜外装壳体5作为嵌入物投入到模具的状态下进行成形。
在这里,作为上述护边体6的材质的热塑性热熔树脂材料,要求对形成叠层膜外装壳体5的叠层膜5a、5b具有足够的粘接性,优选的是,同时具有防水性、防潮性、防尘性、绝缘性之外还具有耐药性等。因此,在本实施方式中,使用聚酰胺系或者聚烯烃系的热塑性热熔树脂材料,更具体而言,作为无溶剂一液型的热塑性热熔粘接剂使用“Macromelt”(汉高公司的注册商标)。
图3、图4表示用于成形护边体6的模具结构的主要部分的结构,模具7是由作为2个模具元件的上模8和下模9构成的对开结构的模具,在这里,下模9作为固定模具、上模8作为可动模具而分别发挥作用。上模8和下模9通过合模面10来对接并合模(闭模),在上模8和下模9的合模面10上除了形成有通过将上模8和下模9合模而作为外装壳体収容部11的収容凹部11a、11b以外,还分别形成有同样是通过将上模8和下模9合模而成为护边体6用的成形品形状空间(模腔)12的成形凹部12a、12b。
而且,也如图5所示,使沿长度方向以规定的间隔配置的多根起模杆13的顶端与下模9侧的成形凹部12b的内底面相面对的同时,在这些起模杆13、13彼此的排列间隔之间开口形成有空气喷射口14来作为压缩空气喷出孔。即,在下模9侧的成形凹部12b的内底面,沿着其长度方向交替配置起模杆13和空气喷射口14。
此外,图5所示的模具结构在上模8侧也是相同的,图3是对应于图5的沿b-b线的截面,同样,图4是对应于图5的沿c-c线的截面。
此外,如图3所示,以上下模8、9的合模状态形成的成形品形状空间12经由浇口部15而与带有直浇部17的浇道部16连接起来,从与直浇部17对接的填充嘴18将熔融的热塑性热熔树脂材料填充或者注入直浇部17,而使直浇部17与如上所述的护边体6一体成形。
图6是表示基于图3、图4所示的模具结构的护边体6的成形时的时间图。如图6所示,在打开模具7的状态下将工件投入下模9,即、将被叠层膜外装壳体5包裹的电池1作为嵌入物投入下模9,并在定位之后进行合模(锁模)。如图3、图4所示,通过该合模,在利用上下模8、9的合模面10对电池1中的叠层膜外装壳体5的长边热熔接部5c的根部侧加压限制的同时,利用上下模8、9的成形凹部12a、12b这两者分隔形成成形品形状空间12。
接着,在使填充嘴18抵接于直浇部17的基础上,从该填充嘴18向成形品形状空间12注射(填充或者注入)熔融后的热熔树脂材料。若注射了规定量的热熔树脂材料,就立刻转换到保压工序,并且,在热熔树脂材料在模具内固化或者硬化之前,换言之,在热熔树脂材料达到软化点以下之前,以保压工序和重叠的形式,从上下模8、9各自的空气喷射口14一齐将压缩气体吹出并进行喷射。而且,如图2所示,通过等待被填充的热熔树脂材料的冷却、固化(硬化),而将护边体6与叠层膜外装壳体5的长边热熔接部5c一体成形。
此外,使用上述的特定的热塑性热熔粘接剂的成形方法作为低压注射成型法的一种方法,也被称为热熔模塑的工艺,与现有的注射成型法相比,其一个优点在于注射压力非常低。
如图6所示,该压缩气体的喷射一直持续到上下模8、9开模的时间点为止,并与空气喷射工序同时进行,在保压工序完成的同时转换到冷却工序,上述空气喷射也有助于在冷却工序中促进冷却。
之后,在自各空气喷射口14的空气喷射停止之前进行开模,并从模具7取出与护边体6一体形成的电池1。此时,伴随上模8的上升动作,该上模8侧的起模杆13突出,利用该上模8侧的起模杆13的突出动作与自上模8侧的空气喷射口14的压缩气体的吹出,能够使在叠层膜外装壳体5上附带有成形后的护边体6的电池1自上模8突出。
而且,与上模8的起模杆13的突出动作同时或者稍晚一些,使下模9侧的起模杆13突出,利用该下模9侧的起模杆13的突出动作与自下模9侧的空气喷射口14的压缩气体的吹出,能够使在叠层膜外装壳体5上附带有成形后的护边体6的电池1自下模9突出,并原封不动地留在下模9上。
在这里,再稍微详细地探讨一下在将热熔树脂材料填充或者注入到成形品形状空间12后且在该填充或者注入的热熔树脂材料在模具内固化或者硬化前,换言之,在热熔树脂材料在模具内达到软化点以下之前进行的压缩气体的喷射的作用。
图7是放大表示将热熔树脂材料填充或者注入到成形品形状空间12后的该热熔树脂材料(护边体6)的截面形状的变化。但是,虽然在图7中只图示下模9侧,而上模8侧的图示被省略,但通过图3、图4可以知晓上模8侧也是与下模9侧为上下对称的关系。
如图7的(A)所示,在将热熔树脂材料填充或者注入到成形品形状空间12后且在该填充或者注入的热熔树脂材料在模具内固化或者硬化前,即、在热熔树脂材料达到软化点以下之前,当从空气喷射口14将压缩气体喷射到成形品形状空间12时,虽然从与型面接触的部分先进行固化或者硬化,但因为热熔树脂材料的中心部处于仍然未固化或者未硬化的半熔融状态,所以,热熔树脂材料整体以被压向叠层膜外装壳体5的长边热熔接部5c的方式被压缩。同时,由于压缩气体的喷射促进了冷却效果,如图7的(B)所示,在进行冷却固化或者冷却硬化的同时,由于伴随着固化或者硬化的收缩而产生“缩痕”。尤其是,在面垂直方向受到来自空气喷射口14的压缩气体的喷射的部分将会成形为凹部Q。
即,如图7的(B)所示,在将热熔树脂材料填充或者注入到成形品形状空间12后且在该填充或者注入的热熔树脂材料在模具内固化或者硬化前所进行的压缩气体的喷射,使本应成为护边体6的热熔树脂材料层积极产生“缩痕”,其结果,使形成成形品形状空间12的型面与本应成为护边体6的热熔树脂材料层之间产生规定的间隙G。因此,如图7的(C)所示,在成形品形状空间12的热熔树脂材料层发生固化或者硬化而变成了护边体6时,形成成形品形状空间12的型面与该护边体6的表面之间保持残留有间隙G的状态。这意味着自开模前就大幅减少护边体6与成形品形状空间12接触的接触面积进而大幅减少紧密接合力。
因此,如上所述,在上下模8、9开模的基础上利用双方的起模杆13的突出动作使成形后的护边体6突出时,来自双方的模具的成形凹部12a、12b的脱模阻力变得非常小,成形后的护边体6也不会贴在成形凹部12a,12b侧,因此能够使其非常顺利地从上下模8、9脱模并将其取出。其结果,不使用脱模剂就能在脱模性和成形性方面都表现良好,从而能够缩短量产电池1时的1次注射的成形周期。
此外,因为压缩气体的喷射是朝向与起模杆13的突出的方向相同的方向喷射的,压缩空气的喷射力与起模杆13的突出力一起使成形后的护边体6从下模9突出的同时发挥积极地脱模作用,这样也能得到良好的脱模性。
而且,因为上述压缩气体的喷射方向与向叠层膜外装体5的长边热熔接部5c的表面或者背面按压由热熔树脂材料形成的护边体6的方向一致,因此护边体6的相对于叠层膜外装体5的粘接性也非常好。
在这里,如上述实施方式那样,虽然使成形品的局部积极地产生“缩痕”将意味着原本的成形品的形状精度的降低,尤其是不允许在成形品的设计面上发生过多的“缩痕”,但上述护边体6就其功能而言因没有设计性的要求而不存在任何问题。更具体而言,如果将如图1所示的单个电池1作为一个电池单元,因为将多个电池单元汇成一个整体并收容于金属制的硬质外壳内而形成电池模块,上述护边体6只要能发挥避免例如电池1与金属制的硬质外壳的金属接触的功能,护边体6本身的形状精度就不存在问题。
Claims (6)
1.一种叠层型二次电池的制造方法,其是这样的方法:将收容有电池元件的叠层膜外装体作为嵌入物放置于模具中,并利用热熔树脂材料以将叠层膜外装体的端缘与该端缘附近的正反两个面包围的方式进行模塑,从而将筋状的护边体与叠层膜外装体的周缘部一体成形,其中,
在开始将热熔树脂材料填充或注入到模具的成形品形状空间之后且在热熔树脂材料达到软化点以下之前,向用于分隔形成该成形品形状空间的型面与热熔树脂层的表面之间导入压缩空气。
2.根据权利要求1所述的叠层型二次电池的制造方法,其中
上述热熔树脂层的表面是直接参与压缩空气的导入的部分,通过向该部分与用于分隔形成上述成形品形状空间的型面之间导入压缩空气而形成间隙。
3.根据权利要求1或2所述的叠层型二次电池的制造方法,其中
上述压缩空气的导入是这样进行的:与起模杆自用于分隔形成成形品形状空间的型面的局部突出的方向相同的方向吹出压缩空气。
4.根据权利要求3所述的叠层型二次电池的制造方法,其中
上述压缩空气的吹出方向是将由热熔树脂材料形成的护边体向叠层膜外装体的表面或者背面按压的方向。
5.根据权利要求4所述的叠层型二次电池的制造方法,其中
沿着应该成形的护边体的长度方向以规定的间隔使多根起模杆与用于分隔形成上述成形品形状空间的型面相面对,同时在这些起模杆彼此之间开口形成有压缩空气吹出孔,
从各压缩空气吹出孔一齐吹出压缩空气。
6.根据权利要求5所述的叠层型二次电池的制造方法,其中
上述模具形成为由2个模具元件构成的对开结构的模具,并以跨于双方的模具元件的合模面的形式形成成形品形状空间,
沿着应该成形的护边体的长度方向以规定的间隔使多根起模杆与用于分隔形成每个上述模具元件的成形品形状空间的型面相面对,同时在这些起模杆彼此之间开口形成有压缩空气吹出孔,
从各压缩空气吹出孔一齐吹出压缩空气。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-223720 | 2011-10-11 | ||
JP2011223720 | 2011-10-11 | ||
PCT/JP2012/076233 WO2013054816A1 (ja) | 2011-10-11 | 2012-10-10 | ラミネート型二次電池の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103875093A true CN103875093A (zh) | 2014-06-18 |
CN103875093B CN103875093B (zh) | 2016-09-07 |
Family
ID=48081871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201280049464.0A Active CN103875093B (zh) | 2011-10-11 | 2012-10-10 | 叠层型二次电池的制造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9701056B2 (zh) |
EP (1) | EP2768041B1 (zh) |
JP (1) | JP5706532B2 (zh) |
CN (1) | CN103875093B (zh) |
WO (1) | WO2013054816A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113134988A (zh) * | 2021-04-14 | 2021-07-20 | 一汽解放汽车有限公司 | 双极板成型方法及双极板成型装置 |
US11973180B2 (en) | 2015-10-27 | 2024-04-30 | Semiconductor Energy Laboratory Co., Ltd. | Battery and method for manufacturing battery |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140144843A (ko) * | 2013-06-12 | 2014-12-22 | 주식회사 엘지화학 | 실링부가 경화성 물질로 절연되어 있는 파우치형 전지셀의 제조방법 |
JP6435614B2 (ja) * | 2014-03-12 | 2018-12-12 | Tdk株式会社 | 電気化学デバイス |
DE102014206500A1 (de) * | 2014-04-04 | 2015-10-08 | Bayerische Motoren Werke Aktiengesellschaft | Werkzeug zur Herstellung eines Faserverbundbauteils |
DE102015000735A1 (de) * | 2015-01-21 | 2016-07-21 | Audi Ag | Verfahren zur Fertigung einer Pouchzelle |
JP6738271B2 (ja) * | 2016-12-28 | 2020-08-12 | 株式会社エンビジョンAescジャパン | 樹脂成形方法及び外装体に樹脂部材を備えるラミネート型電池。 |
DE102020101266B3 (de) * | 2020-01-21 | 2020-12-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batteriemodul einer Traktionsbatterie eines Kraftfahrzeugs |
JP7245437B2 (ja) * | 2020-03-05 | 2023-03-24 | トヨタ自動車株式会社 | 全固体電池の製造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006038697A1 (ja) * | 2004-10-08 | 2006-04-13 | Nec Corporation | 薄型電池、組電池、および薄型電池の製造方法 |
CN1964829A (zh) * | 2004-06-08 | 2007-05-16 | 丰田自动车株式会社 | 注射成型方法和注射成型装置 |
US20070154799A1 (en) * | 2005-09-28 | 2007-07-05 | Junill Yoon | Apparatus for manufacturing secondary battery |
US20100252962A1 (en) * | 2005-12-22 | 2010-10-07 | Honda Motor Co., Ltd. | Molding method and molding apparatus |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04308712A (ja) * | 1991-04-08 | 1992-10-30 | Sekisui Chem Co Ltd | 圧縮成形法とその成形金型装置 |
US5344596A (en) * | 1992-03-23 | 1994-09-06 | Icp Systems, Inc. | Method for fluid compression of injection molded plastic material |
JP2591784Y2 (ja) * | 1993-04-21 | 1999-03-10 | 本田技研工業株式会社 | 射出成形用金型 |
JP3471323B2 (ja) * | 2001-02-27 | 2003-12-02 | 京セラ株式会社 | バッテリーとこれを備えた携帯端末 |
JP2003117967A (ja) * | 2001-10-11 | 2003-04-23 | Molten Corp | 射出成形金型 |
JP2003245970A (ja) * | 2002-02-27 | 2003-09-02 | Shibaura Mechatronics Corp | シート成形方法及び装置 |
JP4265193B2 (ja) * | 2002-10-02 | 2009-05-20 | ソニー株式会社 | 箱型ケース製造用型枠体 |
JP4687052B2 (ja) | 2004-09-29 | 2011-05-25 | トヨタ自動車株式会社 | シート材型電池の製造方法及びシート材型電池 |
JP2006114406A (ja) | 2004-10-15 | 2006-04-27 | Toyota Motor Corp | シート材型電池の製造方法、シート材型電池及びシート材型単電池を組み合わせる組電池 |
JP5089861B2 (ja) * | 2004-12-15 | 2012-12-05 | 三星エスディアイ株式会社 | 蓄電デバイス及び蓄電デバイスの外装体の製造方法及び蓄電デバイスの外装体の成形装置 |
JP2007128792A (ja) | 2005-11-07 | 2007-05-24 | Furukawa Battery Co Ltd:The | ラミネートパック電池 |
-
2012
- 2012-10-10 EP EP12840457.1A patent/EP2768041B1/en active Active
- 2012-10-10 CN CN201280049464.0A patent/CN103875093B/zh active Active
- 2012-10-10 WO PCT/JP2012/076233 patent/WO2013054816A1/ja active Application Filing
- 2012-10-10 US US14/350,212 patent/US9701056B2/en active Active
- 2012-10-10 JP JP2013538556A patent/JP5706532B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1964829A (zh) * | 2004-06-08 | 2007-05-16 | 丰田自动车株式会社 | 注射成型方法和注射成型装置 |
WO2006038697A1 (ja) * | 2004-10-08 | 2006-04-13 | Nec Corporation | 薄型電池、組電池、および薄型電池の製造方法 |
US20070154799A1 (en) * | 2005-09-28 | 2007-07-05 | Junill Yoon | Apparatus for manufacturing secondary battery |
US20100252962A1 (en) * | 2005-12-22 | 2010-10-07 | Honda Motor Co., Ltd. | Molding method and molding apparatus |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11973180B2 (en) | 2015-10-27 | 2024-04-30 | Semiconductor Energy Laboratory Co., Ltd. | Battery and method for manufacturing battery |
CN113134988A (zh) * | 2021-04-14 | 2021-07-20 | 一汽解放汽车有限公司 | 双极板成型方法及双极板成型装置 |
CN113134988B (zh) * | 2021-04-14 | 2023-03-17 | 一汽解放汽车有限公司 | 双极板成型方法及双极板成型装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2013054816A1 (ja) | 2013-04-18 |
CN103875093B (zh) | 2016-09-07 |
US20140363730A1 (en) | 2014-12-11 |
US9701056B2 (en) | 2017-07-11 |
JPWO2013054816A1 (ja) | 2015-03-30 |
EP2768041A1 (en) | 2014-08-20 |
EP2768041B1 (en) | 2016-05-18 |
JP5706532B2 (ja) | 2015-04-22 |
EP2768041A4 (en) | 2015-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103875093A (zh) | 叠层型二次电池的制造方法 | |
CN101268570B (zh) | 用于制造二次电池的设备 | |
US8876523B2 (en) | Injection molding apparatus | |
CN101807713A (zh) | 制造二次电池的方法和用此方法制造的二次电池 | |
CN107671283A (zh) | 电机壳体的粉末冶金成型设备 | |
EP2987599B1 (en) | Method for manufacturing carbon plate-integrated gasket | |
CN101366131A (zh) | 注塑封装锂电池的方法 | |
KR20180043665A (ko) | 배터리 커버, 금형 및 금형을 통해 배터리 커버를 제조하는 방법 | |
CN105489790B (zh) | 一种软包电芯模块及其制作方法 | |
WO2011132996A3 (ko) | 연료전지용 세퍼레이터의 성형장치, 연료전지용 세퍼레이터의 성형방법 및 그 성형방법에 의해 성형된 연료전지용 세퍼레이터 | |
CN109638216A (zh) | 用于电池上的双注塑电池端子的制作方法 | |
JP4723708B2 (ja) | 電池パック及びその製造方法 | |
CN210651596U (zh) | 一种半导体器件的模封模具 | |
CN101767413A (zh) | 一种锂电池模具及低压注塑方法 | |
CN208681993U (zh) | 一种预变形传感器端盖注塑模 | |
CN103568200A (zh) | 双色注塑成型的方法 | |
KR20210084227A (ko) | 배터리 셀 커버의 제조방법 및 이를 포함하는 배터리 셀 커버 | |
CN218414846U (zh) | 一种新型低压注塑电池封装结构 | |
CN201613624U (zh) | 一种锂电池低压注塑模具 | |
CN203536224U (zh) | 塑壳电容器上下环氧树脂密封结构 | |
KR20130087138A (ko) | 모래주형이 내포된 금형틀을 이용한 주조공법 | |
CN217573853U (zh) | 一种医用湿化杯体多腔模具 | |
CN202684047U (zh) | 一种双金属板复合材料铸造用熔体供给装置 | |
CN202684048U (zh) | 一种压力可调的双金属板复合材料铸造用熔体供给装置 | |
CN215434860U (zh) | 一种上盖注塑成型用分离出料组件 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190814 Address after: Kanagawa Patentee after: ENVISION AESC JAPAN Ltd. Address before: Kanagawa Patentee before: NISSAN MOTOR Co.,Ltd. |
|
TR01 | Transfer of patent right |