CN106328856A - 一种高可靠性锂电池盖帽 - Google Patents
一种高可靠性锂电池盖帽 Download PDFInfo
- Publication number
- CN106328856A CN106328856A CN201510353179.3A CN201510353179A CN106328856A CN 106328856 A CN106328856 A CN 106328856A CN 201510353179 A CN201510353179 A CN 201510353179A CN 106328856 A CN106328856 A CN 106328856A
- Authority
- CN
- China
- Prior art keywords
- explosion
- lithium battery
- battery cap
- electric conductor
- upper cover
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 125000006850 spacer group Chemical group 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
- H01M50/333—Spring-loaded vent valves
-
- 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
- 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
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Primary Cells (AREA)
Abstract
本发明公开一种高可靠锂电池盖帽,包括上盖(1)、孔板(4)、密封圈(2)、绝缘垫片(3)、弹簧(5)、导电体(6)、防爆体(7),其特征在于:所述防爆体(7)与上盖(1)通过弹簧(5)连接,所述的上盖(1)与孔板(4)上设置有导电体(6),导电体(6)与防爆体(7)组成电池开关,孔板(4)与绝缘垫片(3)连接。本发明优点:不仅可以准确判断电池内压,及时泄压,而且可以重复排气,此外,改进后盖帽自带开关,可以断电与通电,利用率高,能很好预防失误导致电池报废,节约成本。
Description
【技术领域】
本发明涉及一种锂离子电池的盖帽结构,尤其是涉及一种高可靠性锂电池盖帽。
【背景技术】
目前圆柱型锂电电池正朝着高倍率,高能量密度发展,安全性能成为制约其广泛使用的障碍。高倍率充放电、过充、滥用等情况下,电池温度升高,电解液分解产生气体,随着气体的增加,电池内压增大,达到一定值就会引起爆炸,造成安全问题。
锂电池为了防止内压过高,电池爆炸导致安全事故,其盖帽设计有安全阀,极耳焊接在孔板上,孔板焊接在防爆片上,在电池内压达到1.2-1.5MPa时,防爆片与孔板断开,电池开路,内压继续增加,到1.6-1.9MPa时,防爆片被冲开,电池开启泄压。
上述结构,其通过孔板与防爆片的焊点强度、防爆线来控制电池内压,随电池内压变化动作,这种动作很不可靠,无法准确判断电池内压。焊点强度和防爆线控制内压影响因素很多,没有稳定的数据或者公式作为依据,所以这种结构对电池内压判断上不可靠,其次,当失误造成孔板拉断或者防爆片开启,电池失效,这种一次性的特性,增加了成本。
【发明内容】
针对上述问题,本发明提供一种可重复排气、压力控制可靠度高、自带开关的新功能盖帽,可以准确判断电池内压,及时泄压,而且可以重复排气,能很好预防失误导致电池报废,节约成本。采用的技术方案如下:
一种高可靠性锂电池盖帽,包括上盖(1)、孔板(4)、密封圈(2)、绝缘垫片(3)、弹簧(5)、导电体(6)、防爆体(7)。其特征在于:所述防爆体(7)与上盖(1)通过弹簧(5)连接,所述的上盖(1)与孔板(4)上设置有导电体(6),导电体(6)与防爆体(7)组成电池开关,孔板(4)与绝缘垫片(3)连接。
所述导电体(6)由凸起导电部分和绝缘体组成。
所述凸起导电部分与防爆体(7)的凸起部分紧密贴合且顶端开孔。
所述孔板(4)、绝缘垫片(3)和上盖(1)同心。
所述整个电池盖帽用到的五金件结构材质为合金。
本发明的有益效果:
本发明不仅可以准确判断电池内压,及时泄压,而且可以重复排气,此外,改进后盖帽自带开关,可以断电与通电,利用率高,能很好预防失误导致电池报废,节约成本。
【附图说明】
图1为盖帽整体结构图
图2为电池开关局部放大图
【具体实施方式】
下面结合具体实施实例和附图对本发明的一种端面焊的圆柱形高倍率锂离子电池作进一步详细描述。
弹簧(5)连接防爆体(7)与上盖(1),下端与防爆体(7)(中间活动的导电部分)通过焊接连接,上端与上盖(1)通过橡胶粘结,上导电体(6)在上盖上,为上盖凸起的一部分,下导电体(6)在孔板上,为孔板(4)凸起的一部分,孔板(4)片上面有绝缘垫片(3),绝缘垫片(3)上有上盖(1),三者同心放置,之间通过绝缘胶连接,防爆体(7)在上盖(1)与孔板(4)之间,并与上下导电体(6)紧密结合,外围套绝缘密封圈(2),组成本发明盖帽。
电池正常情况下,防爆体(7)与导电体(6)对应凸起结合,实现导电作用,同时在弹簧压力下,绝缘材料被压缩,使两者紧密结合,保持气密性。
电池由于过充、高温、滥用等内部产生气体,当电池内压达到1.5MPa时,气体通过作用防爆体(7)下端面,顶起弹簧(5),使导电体(6)、防爆体(7)对应的凸起分开,防爆体(7)上升指定高度h,防爆体(7)凸起与导电体(6)绝缘部分接触,电池自动开路,同时内部气体通过导电体(6)下部分凸起的孔排除,进行泄压,保护电池,当内部气压减小,防爆体(7)在弹簧(5)的作用下归位,电池回复正常。
Claims (5)
1.一种高可靠性锂电池盖帽,包括上盖(1)、孔板(4)、密封圈(2)、绝缘垫片(3)、弹簧(5)、导电体(6)、防爆体(7),其特征在于:所述防爆体(7)与上盖(1)通过弹簧(5)连接,所述的上盖(1)与孔板(4)上设置有导电体(6),导电体(6)与防爆体(7)组成电池开关,孔板(4)与绝缘垫片(3)连接。
2.如权利1要求所述的高可靠性锂电池盖帽,其特征在于:所述的导电体(6)由凸起导电部分和绝缘体组成。
3.如权利2要求所述的高可靠性锂电池盖帽,其特征在于:所述的凸起导电部分与防爆体(7)的凸起部分紧密贴合且顶端开孔。
4.如权利1要求所述的高可靠性锂电池盖帽,其特征在于:所述的孔板(4)、绝缘垫片(3)和上盖(1)同心。
5.根据权利要求1-4所述的高可靠性锂电池盖帽,其特征在于:所述的整个电池盖帽用到的五金件结构材质为合金。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510353179.3A CN106328856A (zh) | 2015-06-17 | 2015-06-17 | 一种高可靠性锂电池盖帽 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510353179.3A CN106328856A (zh) | 2015-06-17 | 2015-06-17 | 一种高可靠性锂电池盖帽 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106328856A true CN106328856A (zh) | 2017-01-11 |
Family
ID=57728467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510353179.3A Pending CN106328856A (zh) | 2015-06-17 | 2015-06-17 | 一种高可靠性锂电池盖帽 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106328856A (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019120238A1 (zh) * | 2017-12-22 | 2019-06-27 | 比亚迪股份有限公司 | 电池盖板组件、单体电池、电池模组、动力电池及电动汽车 |
CN110379993A (zh) * | 2019-08-14 | 2019-10-25 | 横店集团东磁股份有限公司 | 一种锂电池组合盖帽及锂电池 |
CN110492050A (zh) * | 2019-07-10 | 2019-11-22 | 上海空间电源研究所 | 一种内置于锂电单体的可切断电流装置 |
CN113994537A (zh) * | 2019-07-11 | 2022-01-28 | 株式会社Lg新能源 | 圆柱形电池 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407760A (en) * | 1993-08-14 | 1995-04-18 | Varta Batterie Aktiengesellschaft | Sealing plug for a lead battery |
CN201681989U (zh) * | 2010-08-20 | 2010-12-22 | 王文林 | 动力锂电池安全阀 |
CN102324479A (zh) * | 2011-09-23 | 2012-01-18 | 奇瑞汽车股份有限公司 | 一种动力锂离子电池防爆阀 |
CN102332544A (zh) * | 2010-12-31 | 2012-01-25 | 东莞新能源科技有限公司 | 一种锂离子电池及其安全盖帽 |
CN204946969U (zh) * | 2015-06-17 | 2016-01-06 | 深圳市沃特玛电池有限公司 | 一种高可靠性锂电池盖帽 |
-
2015
- 2015-06-17 CN CN201510353179.3A patent/CN106328856A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407760A (en) * | 1993-08-14 | 1995-04-18 | Varta Batterie Aktiengesellschaft | Sealing plug for a lead battery |
CN201681989U (zh) * | 2010-08-20 | 2010-12-22 | 王文林 | 动力锂电池安全阀 |
CN102332544A (zh) * | 2010-12-31 | 2012-01-25 | 东莞新能源科技有限公司 | 一种锂离子电池及其安全盖帽 |
CN102324479A (zh) * | 2011-09-23 | 2012-01-18 | 奇瑞汽车股份有限公司 | 一种动力锂离子电池防爆阀 |
CN204946969U (zh) * | 2015-06-17 | 2016-01-06 | 深圳市沃特玛电池有限公司 | 一种高可靠性锂电池盖帽 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019120238A1 (zh) * | 2017-12-22 | 2019-06-27 | 比亚迪股份有限公司 | 电池盖板组件、单体电池、电池模组、动力电池及电动汽车 |
CN109962203A (zh) * | 2017-12-22 | 2019-07-02 | 比亚迪股份有限公司 | 电池盖板组件、单体电池、电池模组、动力电池及电动汽车 |
CN110492050A (zh) * | 2019-07-10 | 2019-11-22 | 上海空间电源研究所 | 一种内置于锂电单体的可切断电流装置 |
CN110492050B (zh) * | 2019-07-10 | 2021-11-23 | 上海空间电源研究所 | 一种内置于锂电单体的可切断电流装置 |
CN113994537A (zh) * | 2019-07-11 | 2022-01-28 | 株式会社Lg新能源 | 圆柱形电池 |
CN113994537B (zh) * | 2019-07-11 | 2024-06-04 | 株式会社Lg新能源 | 圆柱形电池 |
CN110379993A (zh) * | 2019-08-14 | 2019-10-25 | 横店集团东磁股份有限公司 | 一种锂电池组合盖帽及锂电池 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201508864U (zh) | 一种电池盖板组件、单体电池及电池组 | |
CN203733907U (zh) | 一种锂离子电池的安全装置 | |
EP1973182B1 (en) | Secondary batery | |
CN203631651U (zh) | 一种铝壳锂离子电池用电流切断装置及电池 | |
WO2017143754A1 (zh) | 单体电池、电池模组、电池包及电动汽车 | |
CN104993093A (zh) | 一种锂离子电池大电流保护装置及锂离子电池 | |
CN106328856A (zh) | 一种高可靠性锂电池盖帽 | |
CN101262050B (zh) | 高倍率放电圆柱形锂离子电池防爆盖帽 | |
CN101281957B (zh) | 一种具有防爆功能的封闭电池 | |
CN201994356U (zh) | 一种电池组合盖帽 | |
CN2845183Y (zh) | 圆柱形锂离子电池安全防爆盖帽 | |
CN201369353Y (zh) | 新型高倍率放电圆柱形锂离子电池防爆盖帽 | |
CN208797052U (zh) | 一种方形电池顶盖结构 | |
CN204333097U (zh) | 电池用绝缘板及包含该电池用绝缘板的锂离子电池和电池组 | |
CN101304078B (zh) | 一种防爆电池 | |
CN210200769U (zh) | 一种动力电池顶盖结构及动力电池 | |
CN204946969U (zh) | 一种高可靠性锂电池盖帽 | |
CN106953035A (zh) | 电池盖板组件和包括该电池盖板组件的电池 | |
KR20190033900A (ko) | 탄성 부재를 포함하는 원통형 전지셀의 캡 어셈블리 | |
CN108123179A (zh) | 电动汽车动力电池 | |
CN208539026U (zh) | 一种锂离子电池 | |
CN109088012A (zh) | 一种高功率锂离子圆型电池盖 | |
CN206619649U (zh) | 一种锂锰电池 | |
KR20120052035A (ko) | 이차 전지용 캡 조립체와 이를 이용하는 이차 전지, 및 이러한 이차 전지를 제조하는 방법 | |
CN114678607A (zh) | 一种电池盖板、电池和电力系统 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170111 |