CN1185662C - 双电层电容器 - Google Patents

双电层电容器 Download PDF

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Publication number
CN1185662C
CN1185662C CN 01118705 CN01118705A CN1185662C CN 1185662 C CN1185662 C CN 1185662C CN 01118705 CN01118705 CN 01118705 CN 01118705 A CN01118705 A CN 01118705A CN 1185662 C CN1185662 C CN 1185662C
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monomer
layer capacitor
electric layer
double electric
electrode
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CN1391244A (zh
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王国庆
王然
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

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  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

本发明为一种低等效串联电阻双电层电容器，是利用电化学界面双电层效应而制成的，其结构特征是：内部是由若干个单体串联，并由外壳通过弹性金属压片密封而成；单体是由两个集电极、两个包封体、一个PE膜及两个活性碳和碳制成的活化电极。它的等效串联电阻小、容量大、漏电流小、快速充电和放电，次数可达105以上，也称为功率电容器，它适用于驱动微电机、继电器、微型电磁阀等器件，还可作为CMOS存储器和智能仪表的可靠备用电源。

Description

双电层电容器
本发明属于电子元件领域，涉及一种低等效串联电阻、大容量的双电层电容器。
随着信息化技术的进步，智能化仪器仪表不断出现，特别是各种智能型电表、水表、煤气表等计测仪表的出现，由于它们在工作中，不但需要对数据信息的保存，同时，还应具备在断电时或盗用时自动开启和关断阀门功能。因此，应配置一个能够实现上述功能的后备电源。
以前的后备电源常采用普通电池，电池可以实现保护信息和驱动阀门的作用，但电池的使用寿命短，需经常检查和更换，如无电压检测告之功能，就会造成信息保护和驱动功能的丧失。使用充电电池做后备电源，不仅增加了电路的复杂性，而且充放电次数毕竟是有限的。
八十年代初期以来，出现了双电层电容器，它在保护CMOS存储器数据方面起到了很好的作用。但是，由于等效串联电阻较大，瞬间释放功率较小，不能驱动电磁阀、微电机、微型继电器等器件，因此，在应用时存在很大的缺陷。
由于以上原因，需要一种性能更加优越的电子元件来实现这些功能，这也是本发明的目的。
以前的双电层电容器，其单体是采用贵金属或导电橡胶做集电极，活化电极由活性碳与粘合剂混合制成，隔极材料为离子电导率较低的塑料膜或强度、韧性极差的石棉纸，单体由金属外壳直接封装。其缺点是等效串联电阻大、容量小，由于单体与金属外壳遇冷热时的膨胀系数不同，使产品高低温稳定性较差。
本发明是依据下述技术方案来实现的，在外壳的底部与单体之间装有一个高弹性金属片，用来保证外壳在各种温度环境下对单体压力一致；单体的集电极是高分子导电塑胶，并使其与活化电极接触的一面粗化。活化电极是由活性碳和高导电碳黑混合并经热处理后形成的电极材料，活化电极不掺杂粘合剂；隔极材料由聚乙烯膜构成；集电极与包封体之间的结合面通过高温粘接的方法融合，构成一个密封良好的单体，由于单体一致性好，产品可依据应用电压要求串联叠加，叠加数可达30个。
用本发明制作的双电层电容器(功率电容器)，其等效串联电阻是以前同类型产品的1/4，容量增加25％，并有极低的漏电流和较好的高低温稳定性和可靠性。快速充电和放电(次数达105以上)以及优良的自放电特性，能保证其作为备用电源的可靠性。
附图说明：
图1电容器整体结构示意图；
图2单体结构示意图；
图1中，1为金属外壳，端口卷边；2为防止两极短路的绝缘套筒；3为内引出极片；4为外引出极片，它与外壳构成负极；5为叠加的一组单体；6为金属压板；7为弹性金属压片。
图2中，1为上下两个包封体；2为导电塑胶制成的两片集电极；3为PE膜，夹在两个包封体之间；4为含有一定比例电解质的活化电极，它是由活性碳与导电碳的混合体构成。

Claims (3)

1.一种低内阻双电层电容器，包括端口卷边的金属外壳、金属外壳内密封的若干个叠加单体以及内、外引出极，所述的单体是由两个集电极、两个活化电极、两个包封体和一个隔极膜片组成，其特征在于：单体集电极是高分子导电塑胶，并使其与活化电极接触的一面粗化；单体活化电极是由活性炭和高导电碳黑混合并经热处理后形成的电极材料，活化电极不掺杂粘合剂；外壳的底部与单体之间装有一个高弹性金属片。
2.根据权利要求1所述的双电层电容器，其特征在于：所述单体隔极膜片为聚乙烯膜。
3.根据权利要求1或2所述的双电层电容器，其特征在于：在外壳内叠加的单体为2～30个。
CN 01118705 2001-06-07 2001-06-07 双电层电容器 Expired - Fee Related CN1185662C (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01118705 CN1185662C (zh) 2001-06-07 2001-06-07 双电层电容器

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Application Number Priority Date Filing Date Title
CN 01118705 CN1185662C (zh) 2001-06-07 2001-06-07 双电层电容器

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CN1391244A CN1391244A (zh) 2003-01-15
CN1185662C true CN1185662C (zh) 2005-01-19

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006286657A (ja) * 2003-09-11 2006-10-19 Honda Motor Co Ltd 電気二重層キャパシタの電極用活性炭の製造方法
CN101777433B (zh) * 2009-01-08 2012-07-04 张俊彦 平板电容器及其制作方法
DE102017119209B4 (de) * 2017-07-19 2023-02-23 Electronicon Kondensatoren Gmbh Deckelverschluss für in einem Becher anordenbare Wickelkondensatoren

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