CN1242499C - 电池隔层－芯体的除去 - Google Patents

电池隔层－芯体的除去 Download PDF

Info

Publication number
CN1242499C
CN1242499C CNB021315558A CN02131555A CN1242499C CN 1242499 C CN1242499 C CN 1242499C CN B021315558 A CNB021315558 A CN B021315558A CN 02131555 A CN02131555 A CN 02131555A CN 1242499 C CN1242499 C CN 1242499C
Authority
CN
China
Prior art keywords
core body
polypropylene
battery component
interlayer
removing core
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.)
Ceased
Application number
CNB021315558A
Other languages
English (en)
Other versions
CN1412867A (zh
Inventor
R·A·纳克
R·W·考尔
D·K·西蒙斯
M·W·费尔比
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Celgard LLC
Original Assignee
Celgard LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25524695&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1242499(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Celgard LLC filed Critical Celgard LLC
Publication of CN1412867A publication Critical patent/CN1412867A/zh
Application granted granted Critical
Publication of CN1242499C publication Critical patent/CN1242499C/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • H01M50/406—Moulding; Embossing; Cutting
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417—Polyolefins
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/491—Porosity
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/494—Tensile strength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/04—Cells with aqueous electrolyte
    • H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
    • H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cell Separators (AREA)
  • Laminated Bodies (AREA)

Abstract

一种从电池组件中除去芯体的方法，它包括提供隔层的步骤，该隔层包括：有聚丙烯外表部分的微孔薄膜，聚丙烯中包含至少50ppm的硬脂酸金属盐，优选的为惰性(static)的硬脂酸钙，采用的微孔薄膜对芯体的除去力≤7100g。

Description

电池隔层—芯体的除去
技术领域
本发明涉及电池的隔层，它具有改进了的芯体除去特性。
背景技术
在制造高能、轻量级的电池如锂二次电池时，电池的组件即夹在阳极带与阴极带间的隔离带绕在一个或多个芯体(或芯子或芯轴)上。该组件缠绕是将隔离带绷紧于芯体，然后将阳极带和阴极带移往到该芯体。缠绕完毕后，将该电池组件从芯体中除去(或抽去)。如抽去时该组件(即隔离带)卡住在芯体上，该组件“内层伸出(telescope)”而需报废。此种报废增加了电池制造的成本。因此电池制造商要求隔离带具有改进了的芯体除去特性，即该电池组件从芯体除去时隔层应不卡住在芯体上。
人们已作了一些努力来解决上述的芯体除去问题。1998年4月28日公布的日本公开10-110052使用对微孔膜表面作组织化处理来改善芯体的除去。优选由选自氟树脂和硅树脂中的至少一种树脂组成的有机树脂的球状粒子突出于膜表面，这种组织处理的表面减小了摩擦阻力。1998年5月26日公布的日本公开10-139918则使用润滑剂涂覆在微孔膜的表面来改善芯体的除去。可使用浸涂或滚涂来实施这种涂覆。润滑剂包括：蜡(如链烷烃蜡、微晶蜡、低分子量的聚乙烯和其他烃类的蜡)；脂肪酸酯(如硬脂酸甲酯、硬脂酸硬脂酸酯、硬脂酸单甘油酯)；脂肪酰胺(如硬脂酰胺、棕榈酰胺、亚甲基双硬脂酰胺)，及它们的组合。在1998年7月28日公布的日本公开10-195215中，微孔膜的表面部分比其中间部分有更大的聚乙烯对聚丙烯的比值，该膜的表面部分有改进了的芯体除去特性。2000年9月13日公布的美国申请系列号09/661,519为了改善芯体的除去而对芯体的表面作了修饰。表面修饰包括对芯体表面作组织化(粗化)处理和/或凹槽化处理。
硬脂酸钙在聚烯烃树脂中作为一种添加剂使用是熟知的。可参见：《塑料工程手册》，Chapman & Hall出版，纽约市，NY，(1991)，P.645。在这里要指出的是硬脂酸钙在聚烯烃中是作为“助催化剂”(tie upcatalyst)使用，润滑剂是用来提高树脂的加工性能，“有效的润滑剂对最终产品的特性没有不良影响”(即它们是惰性的)。例如，600ppm硬脂酸钙加入到聚丙烯中是起酸清除剂的作用。可参见Witco的 添加剂产 品指南，聚合物添加剂，烯烃/苯乙烯，P.2。硬脂酸钙也可作为润滑剂来改善聚烯烃树脂的流动特性。Witco，同上，P.2。在制造电池隔层如CELGARD2400，单层聚丙烯隔层，和CELGARD2300，多层的隔层，中已使用了含硬脂酸钙的聚丙烯树脂。
尽管已作了所述的工作，仍有必要改善这些隔层芯体的除去特性。
发明内容
一种从电池组件中除去芯体的方法，它包括提供隔层的步骤，所述隔层包括：
有聚丙烯外表部分的微孔薄膜，聚丙烯中至少含有50ppm硬脂酸的金属盐，和所采用的微孔薄膜对芯体的除去力≤7100g。
具体实施方式
此处使用的微孔薄膜是有贯通膜的许多微孔。微孔的平均孔径在0.005至10μm，优选0.01至5μm，最好优选在0.05至2μm。微孔薄膜也有Gurley(ASTM D726B)5至100秒，优选10-60秒。这些薄膜最好是“断路的薄膜”，也就是当发生如内部短路引起电池的温度急剧增高时，它们有停止阳极和阴极间离子流的能力。微孔薄膜有如本领域人员熟知的单层的薄膜或多层的薄膜。优选的多层结构为聚丙烯/聚乙烯/聚丙烯的结构(PP/PE/PP)。优选的单层薄膜是用聚丙烯制作的。薄膜的外表部分(一个新造的词语，它指的是单层薄膜或多层薄膜的表面)优选用聚丙烯，聚丙烯则优选等规的聚丙烯均聚物。这种聚丙烯的熔融流动指数(MFI)在1至4，优选1.2至1.7。该聚丙烯的密度在0.90至0.91g/cm3。这些薄膜优选使用挤出、渐冷、拉伸的方法制备(a/k/a“干拉伸”或Celgara法)，但是也可以使用其它技术如“溶剂提取”制备。可见：Kesting，R.，合成的聚合物薄膜，John Wiley父子出版社，纽约市，NY(1985)，在此列出供作参考。
现已确定在聚丙烯薄膜的外表部分含有硬脂酸金属盐并优选至少含有50ppm的硬脂酸金属盐时，它可以改善隔层的芯体除去特性。优选的硬脂酸金属盐是硬脂酸钙。最好是硬脂酸钙在聚丙烯中至少含有50ppm，可优选50-3000ppm，最好优选300g至600ppm。硬脂酸钙含量用感应耦合等离子体(ICP)分析进行测定。为得到改善芯体除去特性所需的硬脂酸金属盐最小量定为它的下限量。硬脂酸金属盐可从隔层中溶解出来进入电解液并由此对电解液的电化学性质产生不良影响，而当这种危险增大前所容许的硬脂酸金属盐的最大量则定为它加入的上限量。此种硬脂酸钙可从Greenwich，CT的Witco公司购得，它的商品名为“硬脂酸钙Regular”。
本发明将参照下面的实例作进一步说明。
可用以下的方法测量“芯体的除去力(g)”来定量描述芯体的除去特性。
可用电池缠绕机把隔层绕在芯体(芯子或芯轴)上。芯体为一有平滑的外表面、直径为4毫米(0.16英寸)的两块圆筒状芯轴。每块的横截面呈半圆形。以下所讨论的隔层是紧绷在该芯体上。对隔层的初始力(切向)为0.5kgf，以后以24秒254毫米(10英寸)的速率将隔层缠绕。缠绕是用一台张力辊将隔层绷紧在芯体上。张力辊包括位于隔层进料对面的、直径15.9mm(5/8″)的滚筒，施加105帕(1巴)大气压(当工作时)的19.1mm(3/4″)气缸和将滚筒与气缸相连接的6.4mm(1/4″)连杆。
隔层是由两块供试验的30mm(宽)×254mm(10″)薄膜所构成的。用5个隔层作试验，将试验结果平均，取平均值为试验的报告值。每块薄膜以25.4mm(1″)彼此重叠在缠绕机的隔层进料辊上拼接。在隔层的空端即拼接端的末端，用墨水打下12.7mm(1/2″)和177.8mm(7″)的标记。12.7mm(1/2″)标记端与芯体远离边(即邻近张力辊的那一边)对齐，这时隔层附在芯体的片层间开始用张力辊进行缠绕。当标记177.8mm(7″)离缠绕了的胶膜卷筒(jellyroll)(绕在芯体上的隔层)约为12.7mm(1/2″)时，在该标记处将膜隔切断，膜的空端用一块胶布(25.4mm(1″)宽，177.8mm(1/2″)重叠)贴紧于胶膜卷筒上。把该胶膜卷筒(即绕有隔层的芯体)从缠绕机上移走。一个可接受的胶膜卷筒应无皱纹、无内层伸出。
在带有测力计(load cell)(501bs×0.021b；Chatillon DFGS50)的抗张强度测定仪(即Chatillon公司的Chatillon TCD 500-MS型，Greensboro，NC)上放置胶膜卷筒。应变率是每分钟2.5英寸，以每秒100点的速率记录来自测力计的数据。以记录的力的峰值作为所报告的芯体除去力。
Gurley是按ASTM-D726(B)标准测量的。按名称为“纸和纸板的摩擦系数测量方法”的JIS P8147标准测量静态的COF(摩擦系数)。
实例
在表1中，样品C1-C2和1-2是单层的聚丙烯微孔薄膜，C1与C2是以商品名CELGARD2400市售的薄膜(现有技术，PA)。样品1与2是本发明的示例产品。这些样品每个通过圆形模头在200℃挤出，在150℃带有6％的拉伸下渐冷，和拉伸，即16-18％的冷拉伸和就表中所示的量带有松驰的热拉伸。
                          表1
                   C1(PA)          C2(PA)       1           2
树脂               PP              PP           PP          PP
MFI                1.2             1.2          1.2         1.2
总厚度，μm(mil)   25(1)           25(1)        25(1)       25(1)
Gurley，10cc/sec   24              24           24          24
孔隙率，％         40              40           40          40
总拉伸，％         100             100          100         100
硬脂酸钙，ppm      340             ＜1          250         1545
芯体除去力，g      6500            7200         6700        6600
静态平均COF        0.36            0.46         0.42        0.36
在表2中，样品C3，C4和3是多层(PP/PE/PP)微孔薄膜。C3与C4分别为CELGARD2300与CELGARDE162市售产品，样品3是本发明的示例产品。所有薄层PP在224℃用圆形模头挤出，所有的三层膜渐冷(125℃)，并在11％拉伸下结合(133℃)。然后该膜作20-25％冷拉伸后热拉伸和松驰，表2示出了总拉伸量。
                       表2
                    C3(PA)            C4(PA)          3
树脂                PP                PP              PP
MFI                 1.2               1.2             1.2
总厚度，μm(mil)    25(1)             25(1)           25(1)
PP层厚度，μm(mil)  9(0.36)           9(0.36)         9(0.36)
Gurley，10cc/sec    24                24              24
孔隙率，％          40                40              40
总拉伸，％          109               109             109
硬脂酸钙，ppm       492               ＜1             584
芯体除去力，g       6900              7300            6100
静态平均COF         0.56              0.58
在表3中，样品C5和4是多层(PP/PE/PP)微孔薄膜。C5是CELGARD2320市售产品(现有技术(PA))。样品4是本发明的示例产品。所有薄层PP在224℃用圆形模头挤出。所有三层膜渐冷(125℃)，并在11％拉伸下结合(133℃)。然后该膜在20-25％拉伸下冷拉伸后热拉伸和松驰，总拉伸示于表3。
                         表3
                        C5(PA)              4
树脂                    PP                  PP
MFI                     1.2                 1.2
总厚度，μm(mil)        19.5(0.78)          19.5(0.78)
PP层厚度，μm(mil)      6(0.24)             6(0.24)
Gurley，10cc/sec        20                  20
孔隙率，％              43                  43
总拉伸，％              122                 122
硬脂酸钙，ppm           ＜1                 428
芯体除去力，g             8300              6900
静态平均COF               0.41              0.46
在不违背本发明的精神与主要特性的情况下，本发明也可在其它形式下实施。相应地它的实施应参照所附的专利权利要求而不是按本发明范围所作的上述细述。

Claims (20)

1.一种从电池组件中除去芯体的方法，它包括提供隔层的步骤，所述隔层包括：
有聚丙烯外表部分的微孔薄膜，聚丙烯中至少含有250ppm硬脂酸钙。
2.权利要求1的从电池组件中除去芯体的方法，其中在聚丙烯中有250至3000ppm硬脂酸钙。
3.权利要求1的从电池组件中除去芯体的方法，其中微孔薄膜还含有贯通膜的多个微孔，所述的微孔的平均孔径在0.05至10μm，所述膜的Gurley为5至100秒。
4.权利要求1的从电池组件中除去芯体的方法，其中膜还包括有聚丙烯/聚乙烯/聚丙烯结构的多层膜。
5.权利要求4的从电池组件中除去芯体的方法，所述薄膜是断路隔层。
6.权利要求1的从电池组件中除去芯体的方法，其中的聚丙烯中含有熔融流动指数为1至4的聚丙烯。
7.权利要求6的从电池组件中除去芯体的方法，其中的聚丙烯是熔融流动指数为1.2至1.7的聚丙烯。
8.一种从电池组件中除去芯体的方法，它包括提供隔层的步骤，所述隔层包括：
有聚丙烯外表部分的微孔薄膜，聚丙烯中至少含有250ppm硬脂酸金属盐；膜的厚度≤25微米；和芯体的除去力≤7100g。
9.权利要求8的从电池组件中除去芯体的方法，其中的硬脂酸金属盐是硬脂酸钙。
10.权利要求9的从电池组件中除去芯体的方法，其中硬脂酸钙在聚丙烯中的含量在250至3000ppm。
11.权利要求9的从电池组件中除去芯体的方法，其中硬脂酸钙在聚丙烯中的含量在300至600ppm。
12.权利要求8的从电池组件中除去芯体的方法，其中微孔薄膜还包含有贯通膜的多个微孔，所述的微孔平均孔径为0.05至10微米，和所述薄膜的Gurley为5至100秒。
13.权利要求8的从电池组件中除去芯体的方法，其中薄膜还包括有聚丙烯-聚乙烯-聚丙烯结构的多层薄膜。
14.权利要求13的从电池组件中除去芯体的方法，所述薄膜是断路隔层。
15.权利要求8的从电池组件中除去芯体的方法，其中的聚丙烯含有熔融流动指数在1至4的聚丙烯。
16.权利要求15的从电池组件中除去芯体的方法，其中的聚丙烯是熔融流动指数在1.2至1.7的聚丙烯。
17.一种具有改进芯体除去特性的电池隔层，它包括：
在聚丙烯的表面部分并且该部分至少含有250ppm硬脂酸金属盐的微孔薄膜。
18.权利要求17的电池隔层，其中所述的硬脂酸金属盐是250至3000ppm的硬脂酸钙。
19.权利要求17的电池隔层，其中所述的聚丙烯有1至4的熔融流动指数。
20.权利要求17的电池隔层，它具有的芯体除去力≤7100g。
CNB021315558A 2001-10-12 2002-09-11 电池隔层－芯体的除去 Ceased CN1242499C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/976,982 US6692867B2 (en) 2001-10-12 2001-10-12 Battery separator-pin removal
US09/976,982 2001-10-12

Publications (2)

Publication Number Publication Date
CN1412867A CN1412867A (zh) 2003-04-23
CN1242499C true CN1242499C (zh) 2006-02-15

Family

ID=25524695

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB021315558A Ceased CN1242499C (zh) 2001-10-12 2002-09-11 电池隔层－芯体的除去

Country Status (8)

Country Link
US (1) US6692867B2 (zh)
EP (1) EP1302992A2 (zh)
JP (1) JP2003157824A (zh)
KR (1) KR100454695B1 (zh)
CN (1) CN1242499C (zh)
CA (1) CA2397465A1 (zh)
SG (1) SG112847A1 (zh)
TW (1) TW567627B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110168773A (zh) * 2016-11-11 2019-08-23 赛尔格有限责任公司 改进的微米层膜、改进的电池隔板及相关方法

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8007940B2 (en) * 2001-12-11 2011-08-30 Eveready Battery Company, Inc. High discharge capacity lithium battery
US20050112462A1 (en) * 2003-11-21 2005-05-26 Marple Jack W. High discharge capacity lithium battery
US8124274B2 (en) * 2003-11-21 2012-02-28 Eveready Battery Company, Inc. High discharge capacity lithium battery
US8283071B2 (en) 2003-11-21 2012-10-09 Eveready Battery Company, Inc. High discharge capacity lithium battery
US20050233214A1 (en) * 2003-11-21 2005-10-20 Marple Jack W High discharge capacity lithium battery
US20070238017A1 (en) * 2006-04-07 2007-10-11 Celgard Llc Multilayer separator exhibiting improved strength and stability
US8628873B2 (en) 2006-11-14 2014-01-14 Asahi Kasei Chemicals Corporation Separator for lithium ion secondary battery and method for manufacturing the same
US10003058B2 (en) 2006-11-17 2018-06-19 Celgard, Llc Method of making a co-extruded, multi-layered battery separator
JP5257569B2 (ja) * 2007-08-03 2013-08-07 ソニー株式会社 二次電池
US7662510B2 (en) * 2007-09-20 2010-02-16 Celgard Llc X-ray sensitive battery separator and a method for detecting the position of a separator in a battery
JP5361207B2 (ja) 2008-02-20 2013-12-04 住友化学株式会社 多孔性フィルムを有するセパレータ
JP2010244875A (ja) * 2009-04-07 2010-10-28 Panasonic Corp リチウム二次電池用セパレータ、およびそれを用いたリチウム二次電池
US20120329894A1 (en) * 2010-03-02 2012-12-27 Mitsubishi Plastics, Inc. Polypropylene series resin porous film, battery separator and battery
JP5340408B2 (ja) 2010-03-04 2013-11-13 パナソニック株式会社 電池用セパレータ、それを用いた電池および電池の製造方法
JP2014222563A (ja) * 2011-09-07 2014-11-27 Jnc株式会社 リチウムイオン電池用セパレータ
JP6127457B2 (ja) * 2011-11-11 2017-05-17 三菱化学株式会社 非水系電解液二次電池、および非水系電解液
US9385358B2 (en) 2012-07-25 2016-07-05 Samsung Sdi Co., Ltd. Separator for rechargeable lithium battery, and rechargeable lithium battery including the same
JP2013179067A (ja) * 2013-04-26 2013-09-09 Sony Corp 二次電池および二次電池用セパレータ
US9761854B2 (en) 2013-12-13 2017-09-12 Samsug SDI Co., Ltd. Spirally-wound electrode assembly for rechargeable lithium battery and rechargeable lithium battery including same
WO2015112257A1 (en) * 2014-01-27 2015-07-30 The Penn State Research Foundation Sandwich panels with battery cores
EP4148892A1 (en) 2015-07-31 2023-03-15 Celgard, LLC Laminated multilayer membranes, separators, batteries, and methods
EP3535792A4 (en) 2016-11-07 2020-07-15 Celgard, LLC BATTERY SEPARATORS
EP3841019B1 (en) 2018-08-22 2024-02-14 AlumaPower Corporation Rapid electrolyte replenishment system for aerial drones
WO2020039254A1 (en) 2018-08-22 2020-02-27 Alumapower Corporation Metal air battery device
CN115803291A (zh) 2020-05-01 2023-03-14 国际人造丝公司 具有降低的关闭温度的膜和用于制造其的聚合物组合物
CN112002865A (zh) * 2020-08-25 2020-11-27 苏州捷力新能源材料有限公司 一种有机/无机复合多孔隔膜

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54944B1 (zh) * 1969-12-11 1979-01-18
US4327164A (en) * 1979-05-10 1982-04-27 W. R. Grace & Co. Battery separator
GB8517571D0 (en) * 1985-07-11 1985-08-14 Raychem Ltd Polymer composition
US5281491A (en) * 1991-12-20 1994-01-25 W. R. Grace & Co. Battery separator
US5885947A (en) * 1994-03-11 1999-03-23 Maples; Paul D. Dry lubricant
US5759678A (en) * 1995-10-05 1998-06-02 Mitsubishi Chemical Corporation High-strength porous film and process for producing the same
JPH10110052A (ja) 1996-10-07 1998-04-28 Nitto Denko Corp 多孔質フィルムおよびそれを用いた電池用セパレータ並びに電池
JPH10139918A (ja) 1996-11-06 1998-05-26 Nitto Denko Corp 多孔質膜
JPH10195215A (ja) 1997-01-10 1998-07-28 Nitto Denko Corp 多孔質フィルム、電池用セパレータ及び電池
JPH10279717A (ja) * 1997-04-02 1998-10-20 Nitto Denko Corp 多孔質膜および電池用セパレータ
US6245456B1 (en) * 1998-01-13 2001-06-12 Sumitomo Electric Industries, Ltd. Non-aqueous electrolyte battery using a sealing bag comprising heat laminated layers
US6080507A (en) * 1998-04-13 2000-06-27 Celgard Inc. Trilayer battery separator
US6632850B2 (en) * 2001-04-04 2003-10-14 3M Innovative Properties Company Microporous materials and methods of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110168773A (zh) * 2016-11-11 2019-08-23 赛尔格有限责任公司 改进的微米层膜、改进的电池隔板及相关方法

Also Published As

Publication number Publication date
KR100454695B1 (ko) 2004-11-03
US20030072995A1 (en) 2003-04-17
JP2003157824A (ja) 2003-05-30
KR20030030854A (ko) 2003-04-18
CA2397465A1 (en) 2003-04-12
SG112847A1 (en) 2005-07-28
TW567627B (en) 2003-12-21
EP1302992A2 (en) 2003-04-16
US6692867B2 (en) 2004-02-17
CN1412867A (zh) 2003-04-23

Similar Documents

Publication Publication Date Title
CN1242499C (zh) 电池隔层－芯体的除去
KR102542572B1 (ko) 개선된 마이크로층 멤브레인, 개선된 전지 세퍼레이터 및 관련 방법
JP7046772B2 (ja) 共押出しされた、多層電池セパレーター
CN108352480B (zh) 改进的层压多层膜、隔板、电池、和方法
US10847763B2 (en) Packaging material for power storage device, packaging case for power storage device, and power storage device
JP7340461B2 (ja) 電池用セパレータ
WO2019217791A2 (en) Microlayer membranes, battery separators, batteries, and related methods
KR20230006833A (ko) 비대칭 다공성 멤브레인
CN115023460B (zh) 微多孔膜及其制造方法
WO2019089897A1 (en) Improved microporus membranes, battery separators, batteries, and devices having the same
KR20240035788A (ko) 폴리올레핀 다층 미다공막, 적층 폴리올레핀 다층 미다공막, 전지용 세퍼레이터
JP2023018781A (ja) フィルム捲回体、微多孔膜捲回体及びその製造方法
JPH0797539B2 (ja) 両面蒸着用ポリプロピレンフィルム
JPH0318584B2 (zh)
JPS6142117A (ja) 油含浸型コンデンサ−

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
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: North Carolina, USA

Patentee after: CELGARD, LLC

Address before: North Carolina, USA

Patentee before: Celgard Inc.

IW01 Full invalidation of patent right
IW01 Full invalidation of patent right

Decision date of declaring invalidation: 20220104

Decision number of declaring invalidation: 53053

Granted publication date: 20060215