WO2007079617A1 - A button-type battery - Google Patents

A button-type battery Download PDF

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Publication number
WO2007079617A1
WO2007079617A1 PCT/CN2006/000403 CN2006000403W WO2007079617A1 WO 2007079617 A1 WO2007079617 A1 WO 2007079617A1 CN 2006000403 W CN2006000403 W CN 2006000403W WO 2007079617 A1 WO2007079617 A1 WO 2007079617A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode sheet
type battery
negative electrode
button type
positive electrode
Prior art date
Application number
PCT/CN2006/000403
Other languages
English (en)
French (fr)
Inventor
Jinhua Ye
Original Assignee
Chung Pak (Guangdong) Battery Industrial Co., Ltd.
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
Application filed by Chung Pak (Guangdong) Battery Industrial Co., Ltd. filed Critical Chung Pak (Guangdong) Battery Industrial Co., Ltd.
Publication of WO2007079617A1 publication Critical patent/WO2007079617A1/zh

Links

Classifications

    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0463—Cells or batteries with horizontal or inclined electrodes
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • 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
    • H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • H01M6/12—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with flat 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
    • 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

Definitions

  • the utility model relates to a direct current power source, in particular to a button type battery which can be used as a power source of a portable electronic product.
  • Button type batteries are widely used in various portable electronic products because of their small size and high capacitance.
  • a button type battery for example, a lithium battery
  • a battery positive and negative electrode sheets and a diaphragm into a cylindrical shape (cylindrical shape), and then flattening (flattening:) to form a rectangular (square) shape.
  • the electrode piece is placed in the battery case. Since the casing of the button type battery has a circular cross section, the square electrode piece is placed therein, which inevitably causes the space of the four sides of the square to be unusable, thereby limiting the capacity of the battery.
  • the structure of the prior art products determines that the positive and negative guides must be spot welded to the battery (positive) housing and the (negative) cover, which increases the number of processes, reduces efficiency, and increases cost.
  • An object of the present invention is to overcome the deficiencies of the prior art and to provide a button type battery which can make full use of the space inside the battery case, has a large battery capacity, and can reduce the number of steps and cost during manufacture.
  • the button type battery comprises a casing (1), a cover (2), a sealing ring (3) disposed at a connection portion between the casing and the cover, and a combined electric device disposed in the casing.
  • the core is characterized in that the combined battery core is composed of an electrode sheet group, and the electrode sheet group is composed of a positive electrode sheet (4) and a negative electrode sheet (5); the cross-sectional shape and size of the combined battery core are matched with the inner cavity of the housing.
  • the combined battery cell includes one or more electrode chip groups, and the electrode chip groups are separated by an insulating sheet (6).
  • the utility model has a reasonable structure, can effectively increase the battery capacity, and can simplify the battery assembly process, thereby improving efficiency and reducing cost.
  • Figure 1 is a main structural view of the present invention.
  • Fig. 2 is a schematic view showing the structure of a combined battery core according to Embodiment 1 of the present invention.
  • Figure 3 is a schematic view showing the structure of a combined battery core of Embodiment 2 of the present invention.
  • the button type battery includes a casing (1), a cover (2), a sealing ring (3) disposed at a connection portion between the casing and the cover, and a combined battery core disposed in the casing, wherein the combined battery core is composed of Or one or more electrode sheets are stacked, each electrode sheet group is composed of a positive electrode sheet (4) and a negative electrode sheet (5), and the electrode sheet group is separated by an insulating sheet (6); Connected.
  • the cross-sectional shape and size of the combined battery core are matched with the inner cavity of the housing.
  • the positive electrode of the battery is composed of a metal foil (e.g., aluminum foil) and a positive electrode material (e.g., a lithium compound), and the negative electrode plate is composed of a metal foil (e.g., copper foil) and a negative electrode material (e.g., carbon powder).
  • a metal foil e.g., aluminum foil
  • a positive electrode material e.g., a lithium compound
  • the negative electrode plate is composed of a metal foil (e.g., copper foil) and a negative electrode material (e.g., carbon powder).
  • the separator (7) After being covered by the separator (7), it is laminated with the negative electrode sheet to form an electrode sheet group.
  • the diaphragm (7) covers the positive electrode (4), and the periphery can be sealed. But in order to prevent the positive electrode (4) from slipping out of the diaphragm
  • cover area In addition to the cover area, it may be in contact with other electrode sheets, and the periphery may be partially sealed or fully sealed.
  • the positive electrode sheet of the battery is composed of a metal foil (for example, aluminum foil) and a positive electrode material (for example, a lithium compound), and the negative electrode sheet is composed of a metal foil (for example, copper foil) and a negative electrode material (for example, carbon powder).
  • the negative electrode sheet (5) is covered by the separator (7) and laminated with the positive electrode sheet to form an electrode sheet group.
  • the diaphragm (7) covers the negative electrode (5), and the periphery can be sealed.
  • the peripheral portion may be partially sealed or fully sealed.
  • the shape of the positive and negative electrode sheets and the laminated battery cells are as close as possible to the shape of the casing (must leave the position required for electrode guiding), and fill the space inside the casing as much as possible, and use the circular area as much as possible to increase capacitance.
  • the positive and negative electrode sheets are guided by contact type, no welding is required, thereby simplifying the process, improving efficiency, and reducing cost.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Primary Cells (AREA)

Description

一种钮扣型电池
[技术领域]
本实用新型涉及一种直流电源， 特别是一种可以作为便携式电子产 品电源使用的钮扣型电池。
[背景技术]
钮扣型电池以其较小的体积、较高的电容量而被广泛应用于各种便 携式电子产品中。 现有技术中钮扣型电池 (例如锂电池)的结构， 一般是 将电池正、负极片及隔膜卷成圆筒 (圆柱)状，然后再压扁 (压平：)形成矩形 (正方形)的电极片， 再放入电池壳体。 由于钮扣型电池的壳体截面为圆 形， 正方形的电极片放入其中必然导致正方形四个边对开的壳体空间无 法利用， 从而使电池的电容量受到限制。 此外， 现有技术产品的结构决 定了其正、 负极导引须采用点焊方式与电池 (正极)壳体及 (负极)盖连接， 增加了工序， 降低了效率， 提高了成本。
[发明内容]
本实用新型的目的在于克服现有技术的不足之处， 提供一种能充分 利用电池壳体内空间、 电池电容量较大且在制造时能减少工序、 降低成 本的钮扣型电池。
1
确 认 本实用新型的目的是这样实现的： 钮扣型电池包括壳体（1 )、 面盖 (2)、 设置于壳体与面盖连接部的密封圈 （3) 及设置于壳体内的组合 电芯， 其特征在于组合电芯由电极片组构成， 电极片组由一正极片 （4) 和一负极片 （5)组成； 组合电芯的横截面形状、 大小与壳体内腔吻合。 组合电芯包括一个或一个以上电极片组， 电极片组之间有绝缘片 （6) 分隔。
本实用新型结构合理， 能有效增加电池容量， 且可以使电池组装工 序简化， 从而提高了效率、 降低了成本。
[附图说明]
图 1是本实用新型的主要结构图。
图 2是本实用新型实施例 1的组合电芯结构示意图。
图 3是本实用新型实施例 2的组合电芯结构示意图。
图号说明：
1——壳体 2——面盖 3——密封圈 4——正极片 5——负极片 6——绝缘片 7——隔膜 8——周边封口
[具体实施方式]
钮扣型电池包括壳体（1 )、 面盖 （2)、 设置于壳体与面盖连接部的 密封圈 （3) 及设置于壳体内的组合电芯， 其特征在于组合电芯由一个 或一个以上电极片组层叠而成， 每个电极片组由一正极片 （4) 和一负 极片 （5) 组成， 电极片组之间有绝缘片 （6)分隔； 电极片组之间串联 连接。 组合电芯的横截面形状、 大小与壳体内腔吻合。
电池的正极片由金属箔 （例如铝箔）和正极料（例如锂化合物）组 成， 负极片由金属箔 （例如铜箔） 和负极料 （例如碳粉） 组成， 正极片
(4) 被隔膜 （7)包掩后与负极片叠合， 形成一个电极片组。 隔膜 （7) 包掩正极片 （4)， 周边可以不封口。 但为了防止正极片 （4) 滑出隔膜
(7) 包掩范围以外与其他电极片误接触， 周边也可以部分封口或全封 PI。
当然， 也可以采取如下实施方式： 电池的正极片由金属箔 （例如铝 箔）和正极料 （例如锂化合物） 组成， 负极片由金属箔 （例如铜箔）和 负极料 （例如碳粉） 组成， 负极片 （5) 被隔膜 （7) 包掩后与正极片叠 合， 形成一个电极片组。 隔膜（7) 包掩负极片 （5)， 周边可以不封口。 但为了防止负极片 （5)滑出隔膜 （7)包掩范围以外与其他电极片误接 触， 周边部分也可以部分封口或全封口。
正、 负极片及层叠而成的组合电芯的形状尽量与壳体形状一致（须 留出电极导引所需位置）， 并尽量充填壳体内空间， 将圆形的面积尽量 利用， 以加大电容量。 在组装方面， 由于正、 负极片导引采用接触式， 无须焊接， 从而简化了工序， 提高了效率， 降低了成本。

Claims

权利要求书
1、 一种钮扣型电池， 它包括壳体 （1 )、 面盖 （2)、 设置于壳体 与面盖连接部的密封圈 （3 ) 及设置于壳体内的组合电芯， 其特征在 于组合电芯由电极片组构成， 电极片组由一正极片 （4) 和一负极片
(5) 组成； 组合电芯的横截面形状、 大小与壳体内腔吻合。
2、 根据权利要求 1所述的钮扣型电池， 其特征在于组合电芯包 括一个或一个以上电极片组， 电极片组之间有绝缘片 （6) 分隔。
3、 根据权利要求 1或 2所述的钮扣型电池， 其特征在于正极片 由金属箔和正极料组成， 负极片由金属箔和负极料组成， 正极片（4) 被隔膜 （7) 包掩后与负极片 （5 ) 叠合， 形成一个电极片组。
4、 根据权利要求 1或 2所述的钮扣型电池， 其特征在于正极片 由金属箔和正极料组成， 负极片由金属箔和负极料组成， 负极片（5) 被隔膜 （7) 包掩后与正极片 （4) 叠合， 形成一个电极片组。
5、 根据权利要求 1或 2所述的钮扣型电池， 其特征在于电极片 组之间串联连接。
6、 根据权利要求 3所述的钮扣型电池， 其特征在于隔膜（7)包 掩正极片 （4)， 周边不封口。
7、 根据权利要求 3所述的钮扣型电池， 其特征在于隔膜（7)包 掩正极片 （4)， 周边部分封口或全封口。
8、 根据权利要求 4所述的钮扣型电池， 其特征在于隔膜（7)包 掩负极片 （5 )， 周边不封口。
9、 根据权利要求 4所述的钮扣型电池， 其特征在于隔膜（7)包 掩负极片 （5)， 周边部分封口或全封口。
PCT/CN2006/000403 2006-01-06 2006-03-15 A button-type battery WO2007079617A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200620053339.9 2006-01-06
CNU2006200533399U CN2874790Y (zh) 2006-01-06 2006-01-06 一种钮扣型电池

Publications (1)

Publication Number Publication Date
WO2007079617A1 true WO2007079617A1 (en) 2007-07-19

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Application Number Title Priority Date Filing Date
PCT/CN2006/000403 WO2007079617A1 (en) 2006-01-06 2006-03-15 A button-type battery

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CN (1) CN2874790Y (zh)
WO (1) WO2007079617A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019536254A (ja) * 2016-12-30 2019-12-12 チョンチン ブイディーエル エレクトロニクス カンパニー，リミテッド ボタン電池及びその製造方法
CN112086691A (zh) * 2020-09-17 2020-12-15 潘文硕 一种扣式锂电池的制备方法及所得的产品

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2394324B1 (de) 2009-02-09 2015-06-10 VARTA Microbattery GmbH Knopfzellen und verfahren zu ihrer herstellung
DE102009060800A1 (de) 2009-06-18 2011-06-09 Varta Microbattery Gmbh Knopfzelle mit Wickelelektrode und Verfahren zu ihrer Herstellung
CN106129479A (zh) * 2016-08-22 2016-11-16 深圳拓邦新能源技术有限公司 电芯结构及其制备方法、扣式二次锂离子电池
DE202017007353U1 (de) * 2017-11-22 2020-11-23 Shengyi Wang Zylindrische Batterie oder Knopfbatterie
CN108511679A (zh) * 2018-06-20 2018-09-07 力信（江苏）能源科技有限责任公司 一种提高安全性能的极片及其生产装置、制备方法
CN113363635A (zh) * 2019-05-15 2021-09-07 广东微电新能源有限公司 纽扣型电池及其制造方法

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US5494495A (en) * 1994-10-11 1996-02-27 Micron Communications, Inc. Method of forming button-type batteries
CN1461503A (zh) * 2000-08-09 2003-12-10 松下电器产业株式会社 硬币型电池
CN1495947A (zh) * 2002-09-03 2004-05-12 ����Sdi��ʽ���� 钮扣型电池
CN1515048A (zh) * 2001-08-10 2004-07-21 松下电器产业株式会社 硬币型电池及其制造方法

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US5494495A (en) * 1994-10-11 1996-02-27 Micron Communications, Inc. Method of forming button-type batteries
CN1461503A (zh) * 2000-08-09 2003-12-10 松下电器产业株式会社 硬币型电池
CN1515048A (zh) * 2001-08-10 2004-07-21 松下电器产业株式会社 硬币型电池及其制造方法
CN1495947A (zh) * 2002-09-03 2004-05-12 ����Sdi��ʽ���� 钮扣型电池

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019536254A (ja) * 2016-12-30 2019-12-12 チョンチン ブイディーエル エレクトロニクス カンパニー，リミテッド ボタン電池及びその製造方法
US11165088B2 (en) 2016-12-30 2021-11-02 Chongqing Vdl Electronics Co., Ltd. Button battery and manufacturing method therefor
CN112086691A (zh) * 2020-09-17 2020-12-15 潘文硕 一种扣式锂电池的制备方法及所得的产品

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