WO2022000556A1 - 扣式电池 - Google Patents

扣式电池 Download PDF

Info

Publication number
WO2022000556A1
WO2022000556A1 PCT/CN2020/101507 CN2020101507W WO2022000556A1 WO 2022000556 A1 WO2022000556 A1 WO 2022000556A1 CN 2020101507 W CN2020101507 W CN 2020101507W WO 2022000556 A1 WO2022000556 A1 WO 2022000556A1
Authority
WO
WIPO (PCT)
Prior art keywords
surrounding wall
electrode
cover assembly
sealing member
electrode cover
Prior art date
Application number
PCT/CN2020/101507
Other languages
English (en)
French (fr)
Inventor
张健
何家勇
徐斌
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技（南京）有限公司
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 瑞声声学科技(深圳)有限公司, 瑞声科技（南京）有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022000556A1 publication Critical patent/WO2022000556A1/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
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/153—Lids or covers characterised by their shape for button or coin cells
    • 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

Definitions

  • the invention relates to the technical field of batteries, in particular to a button battery.
  • Button batteries are also divided into two categories: chemical batteries and physical batteries, and chemical batteries are the most common. They consist of an anode (positive electrode), a cathode (negative electrode) and its electrolyte, among others. There is a sealing ring insulation between the positive electrode and the negative electrode, the sealing ring is made of nylon, and the sealing ring can prevent the leakage of the electrolyte in addition to the insulating function.
  • the temperature of the button battery in the prior art will increase during the overcharge or overdischarge process, as well as the short circuit of the positive and negative electrodes. Since the battery body is still in a sealed state, the gas inside the battery is difficult to release, resulting in the battery The internal temperature of the battery and the internal pressure of the battery will continue to rise, which may cause high temperature burns or explosions.
  • the purpose of the present invention is to provide a button battery which can improve safety performance.
  • a button-type battery the button-type battery includes a first electrode cover assembly, a second electrode cover assembly insulated and connected to the first electrode cover assembly, a sealing member, and a battery body having a positive electrode and a negative electrode, the first electrode cover assembly
  • An electrode cover assembly and the second electrode cover assembly enclose an accommodation cavity for accommodating the battery body, the battery body is installed in the accommodation cavity, and the positive and negative electrodes of the battery body are One is connected to the first electrode cover assembly, the other is connected to the second electrode cover assembly, the second electrode cover assembly is provided with a through hole communicating with the receiving cavity, and the first electrode
  • the cover assembly and the second electrode cover assembly are sealed by the sealing member, and the sealing member covers the through hole, when the temperature of the battery body exceeds a threshold value, the sealing member is heated and melted, and the receiving cavity passes through the sealing member.
  • the through hole communicates with the outside world.
  • the first electrode cover assembly includes a first cover plate, a first surrounding wall and an insulating connecting piece, and the first cover plate is connected to the first surrounding wall through the insulating connecting piece, so The first surrounding wall is connected to the second electrode cover assembly, and the first surrounding wall is sealed with the second electrode cover assembly through the sealing member.
  • the insulating connector is arranged in a ring shape, and the insulating connector includes an inner side facing the first cover plate, and a side facing the inner side facing the first surrounding wall.
  • the insulating connecting piece is recessed from the inner side to form a first card slot that is snap-fitted with the first cover plate, and the insulating connecting piece is recessed from the outer side to form the first enclosure wall A second card slot that is snap-fitted, the first cover plate is snap-connected to the first card slot, and the first surrounding wall is snap-connected to the second card slot.
  • the second electrode cover assembly includes a second cover plate and a second enclosure wall, the second cover plate is opposite to the first cover plate, and the through hole is provided in the second enclosure
  • the first surrounding wall is connected with the second surrounding wall, and the first surrounding wall is sealed with the second surrounding wall by the sealing member.
  • the inner diameter of the first surrounding wall is larger than the outer diameter of the second surrounding wall, the first surrounding wall is fastened on the second surrounding wall, and the first surrounding wall is connected to the second surrounding wall.
  • the second surrounding wall is welded, the sealing member is sleeved on the second surrounding wall, and the sealing member is in contact with an end of the first surrounding wall away from the first cover plate.
  • the sealing member is arranged in an annular shape, and the outer diameter of the sealing member gradually decreases from the first electrode cover assembly to the second electrode cover assembly.
  • an end of the second surrounding wall facing the first cover plate is bent and extended toward the first surrounding wall to form a connecting portion, and the first surrounding wall is welded with the connecting portion.
  • a plurality of laser welding points are uniformly arranged in the circumferential direction of the first surrounding wall, and the first surrounding wall and the second surrounding wall are fixed by laser welding.
  • the first surrounding wall and the second surrounding wall are welded and fixed by a continuous welding process.
  • the button battery further includes a positive electrode conductive tape and a negative electrode conductive tape
  • the first electrode cover assembly is connected to the positive electrode of the battery body through the positive electrode conductive tape
  • the second electrode cover assembly is connected to the positive electrode of the battery body.
  • the negative electrode is connected to the negative electrode of the battery body through the negative electrode conductive tape; or,
  • the first electrode cap assembly is connected to the negative electrode of the battery body through the negative electrode conductive tape
  • the second electrode cap assembly is connected to the positive electrode of the battery body through the positive electrode conductive tape.
  • the button-type battery of the present invention is provided with a through hole through the second electrode cover assembly and sealed with a sealing member. Under normal circumstances, the button-type battery is sealed inside, which does not affect normal operation; When the threshold value is exceeded, the sealing member is heated and melted, the receiving cavity communicates with the outside world through the through hole, and the gas inside the button battery is emitted to the outside through the through hole and the gap between the first electrode cover assembly and the second electrode cover assembly, so as to avoid the The internal temperature of the coin-type battery continues to rise and the internal pressure of the coin-type battery increases, resulting in a safety accident of high temperature burns or explosion.
  • FIG. 1 is a schematic structural diagram of a button battery according to an embodiment of the present invention.
  • Fig. 2 is a sectional view along line A-A in Fig. 1;
  • Fig. 3 is the enlarged view of B in Fig. 2;
  • FIG. 4 is an exploded view of a button battery according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a first cover plate according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an insulating connector according to an embodiment of the present invention.
  • Fig. 7 is the sectional view along C-C line in Fig. 6;
  • FIG. 8 is a schematic structural diagram of a first surrounding wall according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a sealing member according to an embodiment of the present invention.
  • the first electrode cover assembly 11, the first cover plate; 111, the main body; 112, the step part; a card slot; 134, a second card slot;
  • an embodiment of the present invention provides a button battery 1 , which includes a first electrode cover assembly 10 , a second electrode cover assembly 20 insulated from the first electrode cover assembly 10 , a sealing member 30 , and A battery body 40 having a positive electrode 41 and a negative electrode 42, the first electrode cover assembly 10 and the second electrode cover assembly 20 are enclosed to form an accommodation cavity 50 for accommodating the battery body 40, the battery body 40 is installed in the accommodation cavity 50, and the battery body One of the positive electrode 41 and the negative electrode 42 of the 40 is connected to the first electrode cover assembly 10 , and the other is connected to the second electrode cover assembly 20 .
  • the hole 60, the first electrode cap assembly 10 and the second electrode cap assembly 20 are sealed by the sealing member 30, to avoid that the inside of the button cell 1 passes between the first electrode cap assembly 10 and the second electrode cap assembly 20 under normal conditions
  • the connection gap is communicated with the outside world, and the sealing member 30 covers the through hole 60.
  • the inside of the button battery 1 is sealed, which does not affect the normal operation; when the temperature of the battery body 40 exceeds the threshold value, the sealing member 30 is heated and melted, and the accommodating cavity 50 communicates with the outside world through the through hole 60, and the gas inside the button battery 1 is emitted to the outside through the through hole 60 and the gap between the first electrode cover assembly 10 and the second electrode cover assembly 20, so as to avoid the internal leakage of the button battery 1.
  • the temperature continues to rise and the internal pressure of the button battery 1 rises, resulting in a safety accident of high temperature scalding or explosion.
  • the button battery 1 further includes a positive electrode conductive tape 70 and a negative electrode conductive tape 80.
  • the first electrode cover assembly 10 is connected to the positive electrode 41 of the battery body 40 through the positive electrode conductive tape 70, and the second electrode cover assembly 20 passes through the negative electrode.
  • the conductive tape 80 is connected to the negative electrode 42 of the battery body 40 .
  • the first electrode cover assembly 10 is connected to the negative electrode 42 of the battery body 40 through the negative electrode conductive tape 80
  • the second electrode cover assembly 20 is connected to the positive electrode 41 of the battery body 40 through the positive electrode conductive tape 70 .
  • the first electrode cover assembly 10 includes a first cover plate 11 , a first surrounding wall 12 and an insulating connector 13 .
  • the first cover plate 11 is connected to the positive electrode 41 of the battery body 40 through the positive electrode conductive tape 70 ,
  • the first cover plate 11 is connected to the first surrounding wall 12 through the insulating connector 13 ,
  • the first surrounding wall 12 is connected to the second electrode cover assembly 20 , and the first surrounding wall 12 is sealed with the second electrode cover assembly 20 by the sealing member 30 .
  • the first cover plate 11 is connected to the first surrounding wall 12 through the insulating connecting piece 13 , so that the insulating connection can be achieved when the first surrounding wall 12 is connected to the second electrode cover assembly 20 .
  • the insulating connector 13 is arranged in a ring shape, and the insulating connector 13 includes an inner side 131 facing the first cover plate 11, and is opposite to the inner side 131 and facing the first enclosure.
  • the insulating connector 13 is recessed from the inner side 131 to form a first slot 133 that is snap-fitted with the first cover 11, and the insulating connector 13 is recessed from the outer side 132 to form a card with the first surrounding wall 12.
  • the first cover plate 11 is clamped in the first clamping groove 133, and the first surrounding wall 12 is clamped in the second clamping groove 134.
  • first cover assembly 10 can also be integrally formed, which reduces the assembly process and improves the sealing performance.
  • the first cover 11 includes a main body 111 and a stepped portion 112 protruding from the outer edge of the main body 111 .
  • the second electrode cover assembly 20 includes a second cover plate 21 and a second surrounding wall 22 .
  • the second cover plate 21 is opposite to the first cover plate 11 , and the second cover plate 21 is connected to the second cover plate 21 through the negative conductive strip 80 .
  • the negative electrode 42 of the battery body 40 is connected, the through hole 60 is provided in the second surrounding wall 22 , the first surrounding wall 12 is connected and fixed to the second surrounding wall 22 , and the first surrounding wall 12 is sealed with the second surrounding wall 22 by the sealing member 30 , to avoid that the inside of the button battery 1 communicates with the outside world through the connection gap between the first enclosure wall 12 and the second enclosure wall 22 under normal conditions.
  • the inner diameter of the first surrounding wall 12 is larger than the outer diameter of the second surrounding wall 22, the first surrounding wall 12 is fastened on the second surrounding wall 22, and the first surrounding wall 12 and the second surrounding wall 22 welding, the sealing member 30 is sleeved on the second surrounding wall 22, and the sealing member 30 is in contact with the end of the first surrounding wall 12 away from the first cover plate 11, which can better seal the first surrounding wall 12 and the first surrounding wall 12.
  • the connection gap between the two surrounding walls 22 is larger than the outer diameter of the second surrounding wall 22
  • the first surrounding wall 12 is fastened on the second surrounding wall 22, and the first surrounding wall 12 and the second surrounding wall 22 welding
  • the sealing member 30 is sleeved on the second surrounding wall 22, and the sealing member 30 is in contact with the end of the first surrounding wall 12 away from the first cover plate 11, which can better seal the first surrounding wall 12 and the first surrounding wall 12.
  • one end of the second surrounding wall 22 facing the first cover plate 11 is bent and extended toward the first surrounding wall 12 to form a connecting portion 221 , and the first surrounding wall 12 is welded with the connecting portion 221 .
  • This design is beneficial to The second surrounding wall 22 is welded and fixed to the first surrounding wall 12 so as not to damage the battery body 40 .
  • the first enclosure wall 12 is provided with a number of laser welding points, and the first enclosure wall 12 and the second enclosure wall 22 are fixed by laser welding through the laser welding points.
  • Laser welding has the advantages of high efficiency and precision.
  • the first enclosure wall 12 and the second enclosure wall 22 are welded and fixed by laser welding, thereby limiting the separation between the first electrode cover assembly 10 and the second electrode cover assembly 20 .
  • the number of laser welding points is several, and the several laser welding points are uniformly distributed along the circumferential direction of the first enclosure wall 12 , which improves the connection reliability between the first enclosure wall 12 and the second enclosure wall 22 .
  • connection method of the first surrounding wall 12 and the second surrounding wall 22 can be fixed in other ways besides laser welding.
  • first surrounding wall 12 and the second surrounding wall 22 can be connected by continuous welding.
  • the process of welding and fixing is beneficial to improve the connection strength of the first electrode cover assembly 10 and the second electrode cover assembly 20 .
  • the sealing member 30 is arranged in a ring shape, and the outer diameter of the sealing member 30 gradually decreases from the first electrode cover assembly 10 to the direction of the second electrode cover assembly 20 .
  • the connection gap between the first surrounding wall 12 and the second surrounding wall 22 and the through hole 60 play a sealing role, and when the temperature of the battery body 40 exceeds the threshold value, the heating and melting speed of the sealing member 30 can be increased, so that it can be more.
  • the safety accident of high temperature scalding or explosion caused by the continuous increase of the internal temperature of the button battery 1 and the increase of the internal pressure of the button battery 1 can be well avoided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本发明提供了扣式电池，其包括第一电极盖组件、与第一电极盖组件绝缘连接的第二电极盖组件、密封件、以及具有正极和负极的电池体，第一电极盖组件和第二电极盖组件围合形成用于容纳电池体的收容腔，电池体的正极和负极两者中的一者与第一电极盖组件连接，另一者与第二电极盖组件连接，第二电极盖组件贯穿设有与收容腔连通的通孔，第一电极盖组件和第二电极盖组件通过密封件密封，且密封件覆盖住通孔，电池体温度超过阈值时，密封件受热熔化，扣式电池内部的气体通过通孔和第一电极盖组件与第二电极盖组件之间的间隙散发到外界，从而避免因扣式电池内部温度继续升高与扣式电池内部压力升高造成高温烫伤或者爆炸的安全事故。

Description

扣式电池 技术领域
本发明涉及电池技术领域，尤其涉及一种扣式电池。
 背景技术
纽扣电池也分为化学电池和物理电池两大类，其化学电池应用最为普遍。它们由阳极 (正极)、阴极 (负极)及其电解液等组成。正极与负极间有密封环绝缘，密封环用尼龙制成，密封环除起绝缘作用外，还能阻止电解液泄漏。
 技术问题
但是现有技术中的纽扣电池在过充电或者过放电过程，以及正负极短接等异常情况时，电池温度会升高，由于电池体仍处于密封状态，电池内部的气体难以释放，导致电池体内部温度和电池体内部压力会持续升高，可能造成高温烫伤或者爆炸的安全事故。
因此，有必要提供一种新的扣式电池以解决上述问题。
 技术解决方案
本发明的目的在于提供一种扣式电池，其能够提高安全性能。
本发明的技术方案如下：
 一种扣式电池，所述扣式电池包括第一电极盖组件、与所述第一电极盖组件绝缘连接的第二电极盖组件、密封件、以及具有正极和负极的电池体，所述第一电极盖组件和所述第二电极盖组件围合形成用于容纳所述电池体的收容腔，所述电池体安装在所述收容腔，且所述电池体的正极和负极两者中的一者与所述第一电极盖组件连接，另一者与所述第二电极盖组件连接，所述第二电极盖组件贯穿设有与所述收容腔连通的通孔，所述第一电极盖组件和所述第二电极盖组件通过所述密封件密封，且所述密封件覆盖住所述通孔，所述电池体温度超过阈值时，所述密封件受热熔化，所述收容腔通过所述通孔与外界相通。
作为一种改进方式，所述第一电极盖组件包括第一盖板、第一围壁以及绝缘连接件，所述第一盖板通过所述绝缘连接件与所述第一围壁连接，所述第一围壁与所述第二电极盖组件连接，所述第一围壁通过所述密封件与所述第二电极盖组件密封。
作为一种改进方式，所述绝缘连接件呈环形设置，且所述绝缘连接件包括朝向所述第一盖板的内侧面、以及与所述内侧面相对设置并朝向所述第一围壁的外侧面，所述绝缘连接件从所述内侧面凹陷形成与所述第一盖板卡接配合的第一卡槽，所述绝缘连接件从所述外侧面凹陷形成与所述第一围壁卡接配合的第二卡槽，所述第一盖板卡接在所述第一卡槽，所述第一围壁卡接在所述第二卡槽。
作为一种改进方式，所述第二电极盖组件包括第二盖板以及第二围壁，所述第二盖板与所述第一盖板相对，所述通孔设于所述第二围壁，所述第一围壁与所述第二围壁连接，所述第一围壁通过所述密封件与所述第二围壁密封。
作为一种改进方式，所述第一围壁的内径大于所述第二围壁的外径，所述第一围壁扣合在所述第二围壁上，且所述第一围壁与所述第二围壁焊接，所述密封件套设在所述第二围壁上，且所述密封件与所述第一围壁远离所述第一盖板的一端抵接。
作为一种改进方式，所述密封件呈环形设置，且所述密封件的外径自所述第一电极盖组件向所述第二电极盖组件的方向逐渐减小。
作为一种改进方式，所述第二围壁朝向所述第一盖板的一端朝向所述第一围壁弯折延伸形成连接部，所述第一围壁与所述连接部焊接。
作为一种改进方式，在所述第一围壁的周向均匀设有若干个激光焊接点，所述第一围壁与所述第二围壁通过激光焊接固定。
作为一种改进方式，所述第一围壁与所述第二围壁采用连续焊接的工艺焊接固定。
作为一种改进方式，所述扣式电池还包括正极导电带和负极导电带，所述第一电极盖组件通过所述正极导电带与所述电池体的正极连接，所述第二电极盖组件通过所述负极导电带与所述电池体的负极连接；或者，
所述第一电极盖组件通过所述负极导电带与所述电池体的负极连接，所述第二电极盖组件通过所述正极导电带与所述电池体的正极连接。
 有益效果
本发明的有益效果在于：本发明的扣式电池通过在第二电极盖组件贯穿设置通孔，并利用密封件密封，常规情况下，扣式电池内部密封，不影响正常工作；在电池体温度超过阈值时，密封件受热熔化，收容腔通过通孔与外界相通，扣式电池内部的气体通过通孔和第一电极盖组件与第二电极盖组件之间的间隙散发到外界，从而避免因扣式电池内部温度继续升高与扣式电池内部压力升高造成高温烫伤或者爆炸的安全事故。
 附图说明
图1为本发明实施例的扣式电池的结构示意图；
图2为图1中沿A-A线的剖面图；
图3为图2中B的放大图；
图4为本发明实施例的扣式电池的分解图；
图5为本发明实施例的第一盖板的结构示意图；
图6为本发明实施例的绝缘连接件的结构示意图；
图7为图6中沿C-C线的剖面图；
图8为本发明实施例的第一围壁的结构示意图；
图9为本发明实施例的密封件的结构示意图。
附图说明：
1、扣式电池；
10、第一电极盖组件；11、第一盖板；111、本体；112、台阶部；12、第一围壁；13、绝缘连接件；131、内侧面；132、外侧面；133、第一卡槽；134、第二卡槽；
20、第二电极盖组件；21、第二盖板；22、第二围壁；221、连接部；
30、密封件；
40、电池体；41、正极；42、负极；
50、收容腔；
60、通孔；
70、正极导电带；
80、负极导电带。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步说明。
需要说明的是，本发明实施例中所有方向性指示（诸如上、下、左、右、前、后、内、外、顶部、底部……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
还需要说明的是，当元件被称为“固定于”或“设置于”另一个元件上时，该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件，它可以是直接连接另一个元件或者可能同时存在居中元件。
参阅图1-图9，本发明实施例提供一种扣式电池1，其包括第一电极盖组件10、与第一电极盖组件10绝缘连接的第二电极盖组件20、密封件30、以及具有正极41和负极42的电池体40，第一电极盖组件10和第二电极盖组件20围合形成用于容纳电池体40的收容腔50，电池体40安装在收容腔50，且电池体40的正极41和负极42两者中的一者与第一电极盖组件10连接，另一者与第二电极盖组件20连接，第二电极盖组件20贯穿设有与收容腔50连通的通孔60，第一电极盖组件10和第二电极盖组件20通过密封件30密封，避免正常情况下，扣式电池1内部通过第一电极盖组件10和第二电极盖组件20两者之间的连接间隙与外界连通，且密封件30覆盖住通孔60，常规情况下，扣式电池1内部密封，不影响正常工作；在电池体40温度超过阈值时，密封件30受热熔化，收容腔50通过通孔60与外界相通，扣式电池1内部的气体通过通孔60和第一电极盖组件10与第二电极盖组件20之间的间隙散发到外界，从而避免因扣式电池1内部温度继续升高与扣式电池1内部压力升高造成高温烫伤或者爆炸的安全事故。
在本实施例中，扣式电池1还包括正极导电带70和负极导电带80，第一电极盖组件10通过正极导电带70与电池体40的正极41连接，第二电极盖组件20通过负极导电带80与电池体40的负极42连接。在其他实施例中，第一电极盖组件10通过负极导电带80与电池体40的负极42连接，第二电极盖组件20通过正极导电带70与电池体40的正极41连接。
参阅图1-图8，第一电极盖组件10包括第一盖板11、第一围壁12以及绝缘连接件13，第一盖板11通过正极导电带70与电池体40的正极41连接，第一盖板11通过绝缘连接件13与第一围壁12连接，第一围壁12与第二电极盖组件20连接，第一围壁12通过密封件30与第二电极盖组件20密封。第一盖板11通过绝缘连接件13与第一围壁12连接，这样第一围壁12与第二电极盖组件20连接时就可以实现绝缘连接。
参阅图3，图4，图6-图7，绝缘连接件13呈环形设置，且绝缘连接件13包括朝向第一盖板11的内侧面131、以及与内侧面131相对设置并朝向第一围壁12的外侧面132，绝缘连接件13从内侧面131凹陷形成与第一盖板11卡接配合的第一卡槽133，绝缘连接件13从外侧面132凹陷形成与第一围壁12卡接配合的第二卡槽134，第一盖板11卡接在第一卡槽133，第一围壁12卡接在第二卡槽134，这样设计，通过卡接配合的方式使第一盖板11、绝缘连接件13和第一围壁12连接在一起，既使得第一盖板11、绝缘连接件13和第一围壁12三者具有良好的连接稳定性，又便于拆卸维护。需要说明的是，第一电极盖组件10也可一体成型，减少装配工序，并提高密封性能。
参阅图2，图3和图5，第一盖板11包括本体111和从本体111外缘凸设的台阶部112，台阶部112卡接在第一卡槽133内。
参阅图2-图3，第二电极盖组件20包括第二盖板21以及第二围壁22，第二盖板21与第一盖板11相对，第二盖板21通过负极导电带80与电池体40的负极42连接，通孔60设于第二围壁22，第一围壁12与第二围壁22连接固定，且第一围壁12通过密封件30与第二围壁22密封，避免正常情况下，扣式电池1内部通过第一围壁12和第二围壁22两者之间的连接间隙与外界连通。
参阅图2-图3，第一围壁12的内径大于第二围壁22的外径，第一围壁12扣合在第二围壁22上，且第一围壁12与第二围壁22焊接，密封件30套设在第二围壁22上，且密封件30与第一围壁12远离第一盖板11的一端抵接，能够更好地密封住第一围壁12和第二围壁22两者之间的连接间隙。
参阅图3-图4，第二围壁22朝向第一盖板11的一端朝向第一围壁12弯折延伸形成连接部221，第一围壁12与连接部221焊接，这样设计，有利于第二围壁22与第一围壁12焊接固定，而不至于破坏电池体40。
参阅图1-图4，以及图8，第一围壁12设有若干个激光焊接点，第一围壁12与第二围壁22通过激光焊接点激光焊接固定。激光焊接具有高效精密的优点，通过激光焊接的方式将第一围壁12与第二围壁22焊接固定，从而限制第一电极盖组件10与第二电极盖组件20之间分离。
具体地，激光焊接点的数量为若干个，若干个激光焊接点沿第一围壁12的圆周方向均匀分布，提高了第一围壁12与第二围壁22的连接可靠性。
可以理解地，第一围壁12与第二围壁22的连接方式除了通过激光焊接固定之外，还可以有其他的固定方式，例如，第一围壁12与第二围壁22采用连续焊接的工艺焊接固定，有利于提高第一电极盖组件10与第二电极盖组件20的连接强度。
参阅图2-图4，以及图9，密封件30呈环形设置，且密封件30的外径自第一电极盖组件10向第二电极盖组件20的方向逐渐减小，这样设计，既能够对第一围壁12和第二围壁22两者之间的连接间隙以及通孔60起到密封作用，又能够在电池体40温度超过阈值时，提高密封件30的受热熔化速度，从而能够更好地避免因扣式电池1内部温度继续升高与扣式电池1内部压力升高造成高温烫伤或者爆炸的安全事故。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种扣式电池，其特征在于，所述扣式电池包括第一电极盖组件、与所述第一电极盖组件绝缘连接的第二电极盖组件、密封件、以及具有正极和负极的电池体，所述第一电极盖组件和所述第二电极盖组件围合形成用于容纳所述电池体的收容腔，所述电池体安装在所述收容腔，且所述电池体的正极和负极两者中的一者与所述第一电极盖组件连接，另一者与所述第二电极盖组件连接，所述第二电极盖组件贯穿设有与所述收容腔连通的通孔，所述第一电极盖组件和所述第二电极盖组件通过所述密封件密封，且所述密封件覆盖住所述通孔，所述电池体温度超过阈值时，所述密封件受热熔化，所述收容腔通过所述通孔与外界相通。
  2. 根据权利要求1所述的扣式电池，其特征在于，所述第一电极盖组件包括第一盖板、第一围壁以及绝缘连接件，所述第一盖板通过所述绝缘连接件与所述第一围壁连接，所述第一围壁与所述第二电极盖组件连接，所述第一围壁通过所述密封件与所述第二电极盖组件密封。
  3. 根据权利要求2所述的扣式电池，其特征在于，所述绝缘连接件呈环形设置，且所述绝缘连接件包括朝向所述第一盖板的内侧面、以及与所述内侧面相对设置并朝向所述第一围壁的外侧面，所述绝缘连接件从所述内侧面凹陷形成与所述第一盖板卡接配合的第一卡槽，所述绝缘连接件从所述外侧面凹陷形成与所述第一围壁卡接配合的第二卡槽，所述第一盖板卡接在所述第一卡槽，所述第一围壁卡接在所述第二卡槽。
  4. 根据权利要求2所述的扣式电池，其特征在于，所述第二电极盖组件包括第二盖板以及第二围壁，所述第二盖板与所述第一盖板相对，所述通孔设于所述第二围壁，所述第一围壁与所述第二围壁连接，所述第一围壁通过所述密封件与所述第二围壁密封。
  5. 根据权利要求4所述的扣式电池，其特征在于，所述第一围壁的内径大于所述第二围壁的外径，所述第一围壁扣合在所述第二围壁上，且所述第一围壁与所述第二围壁焊接，所述密封件套设在所述第二围壁上，且所述密封件与所述第一围壁远离所述第一盖板的一端抵接。
  6. 根据权利要求5所述的扣式电池，其特征在于，所述密封件呈环形设置，且所述密封件的外径自所述第一电极盖组件向所述第二电极盖组件的方向逐渐减小。
  7. 根据权利要求5所述的扣式电池，其特征在于，所述第二围壁朝向所述第一盖板的一端朝向所述第一围壁弯折延伸形成连接部，所述第一围壁与所述连接部焊接。
  8. 根据权利要求5所述的扣式电池，其特征在于，在所述第一围壁的周向均匀设有若干个激光焊接点，所述第一围壁与所述第二围壁通过激光焊接固定。
  9. 根据权利要求5所述的扣式电池，其特征在于，所述第一围壁与所述第二围壁采用连续焊接的工艺焊接固定。
  10. 根据权利要求1所述的扣式电池，其特征在于，所述扣式电池还包括正极导电带和负极导电带，所述第一电极盖组件通过所述正极导电带与所述电池体的正极连接，所述第二电极盖组件通过所述负极导电带与所述电池体的负极连接；或者，
    所述第一电极盖组件通过所述负极导电带与所述电池体的负极连接，所述第二电极盖组件通过所述正极导电带与所述电池体的正极连接。
PCT/CN2020/101507 2020-06-30 2020-07-10 扣式电池 WO2022000556A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010617769.3A CN111682130A (zh) 2020-06-30 2020-06-30 扣式电池
CN202010617769.3 2020-06-30

Publications (1)

Publication Number Publication Date
WO2022000556A1 true WO2022000556A1 (zh) 2022-01-06

Family

ID=72457025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/101507 WO2022000556A1 (zh) 2020-06-30 2020-07-10 扣式电池

Country Status (2)

Country Link
CN (1) CN111682130A (zh)
WO (1) WO2022000556A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115275463A (zh) * 2022-08-11 2022-11-01 孚能科技(赣州)股份有限公司 电池单元顶盖、电池单元、电池模组及电池包

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111564576A (zh) * 2020-06-23 2020-08-21 瑞声科技（南京）有限公司 一种纽扣电池
CN112467266B (zh) * 2020-11-30 2023-12-19 惠州市恒泰科技股份有限公司 钢壳扣式电池的制备方法及钢壳扣式电池
CN112652866A (zh) * 2021-01-13 2021-04-13 深圳市佰泽电子有限公司 一种具有无痕焊接结构的微型纽扣电池

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069455A (ja) * 2010-09-27 2012-04-05 Panasonic Corp コイン形電池
CN106601960A (zh) * 2016-12-30 2017-04-26 重庆市紫建电子有限公司 一种纽扣电池及其制造方法
CN207834423U (zh) * 2018-01-07 2018-09-07 合肥国轩高科动力能源有限公司 一种锂电池防爆壳体
CN208352408U (zh) * 2018-03-30 2019-01-08 昆山兴能能源科技有限公司 一种圆形安全泄压纽扣电池
CN208753411U (zh) * 2018-10-10 2019-04-16 力源电池科技（深圳）有限公司 一种防爆纽扣电池外壳
CN110048053A (zh) * 2019-04-10 2019-07-23 常州微宙电子科技有限公司 用于储能装置的外壳以及储能装置
CN212571147U (zh) * 2020-06-30 2021-02-19 瑞声科技（南京）有限公司 扣式电池

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069455A (ja) * 2010-09-27 2012-04-05 Panasonic Corp コイン形電池
CN106601960A (zh) * 2016-12-30 2017-04-26 重庆市紫建电子有限公司 一种纽扣电池及其制造方法
CN207834423U (zh) * 2018-01-07 2018-09-07 合肥国轩高科动力能源有限公司 一种锂电池防爆壳体
CN208352408U (zh) * 2018-03-30 2019-01-08 昆山兴能能源科技有限公司 一种圆形安全泄压纽扣电池
CN208753411U (zh) * 2018-10-10 2019-04-16 力源电池科技（深圳）有限公司 一种防爆纽扣电池外壳
CN110048053A (zh) * 2019-04-10 2019-07-23 常州微宙电子科技有限公司 用于储能装置的外壳以及储能装置
CN212571147U (zh) * 2020-06-30 2021-02-19 瑞声科技（南京）有限公司 扣式电池

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115275463A (zh) * 2022-08-11 2022-11-01 孚能科技(赣州)股份有限公司 电池单元顶盖、电池单元、电池模组及电池包
CN115275463B (zh) * 2022-08-11 2023-08-04 孚能科技(赣州)股份有限公司 电池单元顶盖、电池单元、电池模组及电池包

Also Published As

Publication number Publication date
CN111682130A (zh) 2020-09-18

Similar Documents

Publication Publication Date Title
WO2022000556A1 (zh) 扣式电池
JP4187685B2 (ja) 二次電池
EP2337121B1 (en) Secondary battery pack with a novel structure
WO2020228461A1 (zh) 二次电池
US20040126656A1 (en) Secondary battery and method of manufacturing same
CN216450730U (zh) 一种顶盖组件及电池
CN210379131U (zh) 纽扣电池
KR19990041760A (ko) 이차전지의 캡 어셈블리
CN209804722U (zh) 一种锂离子电池
CN217009372U (zh) 电池
CN212571147U (zh) 扣式电池
US6168879B1 (en) Cap assembly for secondary battery
CN219066998U (zh) 电池端盖
WO2022000545A1 (zh) 扣式电池
WO2021237776A1 (zh) 纽扣电池
CN219180634U (zh) 动力电池盖板和电池
CN217691388U (zh) 盖板、电池及电池组
JP2007265656A (ja) 角形電池ケース及び角形電池
CN215644579U (zh) 一种电池
CN212571148U (zh) 扣式电池
KR100490546B1 (ko) 이차전지
CN217134500U (zh) 一种电池盖板组件及扣式电池
CN211455874U (zh) 一种电池
CN218005051U (zh) 一种方形电池盖板及方形电池
CN220672717U (zh) 一种电池盖板结构及圆柱锂电池

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20942576

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20942576

Country of ref document: EP

Kind code of ref document: A1