CN104466046B - 一种锂电池 - Google Patents
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 33
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000006230 acetylene black Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 150000001263 acyl chlorides Chemical class 0.000 claims 1
- GJCNZQUZWSHFHP-UHFFFAOYSA-N [Li].O=S=O Chemical compound [Li].O=S=O GJCNZQUZWSHFHP-UHFFFAOYSA-N 0.000 abstract description 2
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 abstract description 2
- 239000005300 metallic glass Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 6
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 2
- 239000006183 anode active material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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- 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
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
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- 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
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- 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
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
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- 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
- H01M50/183—Sealing members
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- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/668—Means for preventing spilling of liquid or electrolyte, e.g. when the battery is tilted or turned over
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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
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
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Abstract
本发明的名称为一种锂电池。属于锂原电池技术领域。它主要是解决现有锂电池存在电池壳底部易鼓起变形和注液孔压封易破坏金属玻璃封接部位的问题。它的主要特征是：包括电池壳、正极柱、盖板、锂金属、隔膜、正极和电解液；所述的电池壳为圆柱形，电池壳底部厚度为1㎜；所述的盖板与正极柱之间采用玻璃密封连接；所述的隔膜为将正极与锂金属分隔的圆筒，正极柱穿入正极；所述的盖板或电池壳底部设有注液孔，注液孔外端口密封。本发明具有增加电池抵抗内压的强度和避免注液孔密封时冲击力对电池金属玻璃封接破坏的特点，主要用于锂亚硫酰电池、锂二氧化硫电池和锂二氧化锰电池等锂原电池。
Description
技术领域
本发明属于锂原电池技术领域，具体涉及一种锂电池的结构。
背景技术
锂原电池的外壳由一个电池壳和包含了金属玻璃封接的盖子焊接组成，电池壳一般是用冲压拉伸的方法用不锈钢带或低碳钢带拉伸成筒状，然后切断而成，电池壳底部由于厚度较小，当电池内压过大时，电池壳底部易鼓起变形，而且常规设计是在盖子上有一个注液孔用于加注电解液，加注完毕后需要压封，压封时过大的压力对玻璃封接部位有很大的破坏，从而导致漏液，按照常规设计，很难在钢壳上设计注液孔，以满足可靠性要求，是人们长期以来想解决而未能解决的问题。
发明内容
本发明用于克服已有技术的缺陷，采用底部加厚且在底部增加了注液孔的电池壳，以消除封口时对电池玻璃－金属封接部位的破坏和抵抗电池内压的锂电池。
本发明的技术解决方案是：一种锂电池，包括电池壳、正极柱、盖板、锂金属、隔膜、正极和电解液，其特征在于：所述的电池壳为圆柱形，电池壳底部厚度为1㎜；所述的盖板与正极柱之间采用玻璃密封连接；所述的隔膜为将正极与锂金属分隔的圆筒，正极柱穿入正极；所述的电池壳底部设有注液孔，注液孔外端口密封。
本发明的技术解决方案中所述的注液孔外端口设有压封的封口钢珠，封口钢珠与电池壳底部焊接。
本发明的技术解决方案中所述的隔膜为玻璃纤维材质的隔膜。
本发明的技术解决方案中所述的锂金属为滚压在电池壳内侧壁上的金属锂带。
本发明的技术解决方案中所述的正极为主要含乙炔黑和PTFE成分的正极。
本发明的技术解决方案中所述的电解液为主要含亚硫酰氯和四氯铝酸锂的电解液。
本发明克服了现有技术的不足，电池盖组上的金属－玻璃封接部位外面的盖板部位取消注液孔；电池注液从电池的底部进行，增加了电池抵抗内压的强度，同时可以实现电池底部注液，避免了注液孔密封时冲击力对电池金属玻璃封接的破坏而导致的漏液，解决了人们长期以来想解决而没有解决的问题。本发明主要用于锂亚硫酰电池、锂二氧化硫电池和锂二氧化锰电池等锂原电池。
附图说明
图1为本发明和发明的结构示意图。
具体实施方式
如图1所示。本发明所述的锂电池由电池壳1、正极柱2、盖板3、玻璃4、锂金属5、隔膜6、正极7、电解液8和封口钢珠9组成。其中，电池壳1和盖板3可以是不锈钢或低碳钢，电池壳1为圆柱形，电池壳1底部加厚至1㎜，且设计有注液孔。电池壳1是采用不锈钢或低碳钢切割成筒状再焊接上加厚的电池壳底部，注液孔是采用冲压加工形成的。正极柱2可以是不锈钢或合金钢，如4J28、4J29、4J50等。玻璃4是与盖板3和正极柱2热膨胀系数相匹配的玻璃经高温烧结与盖板3和正极柱2粘结在一起形成密封并绝缘。锂金属5是用金属锂带滚压在电池壳1内壁上成为电池阳极活性材料。隔膜6是由玻璃纤维制成一个基本密封圆筒，用于把正极7（电池阴极）和锂金属5（电池阳级）分开。正极7是由乙炔黑和PTFE为主要成分制成的，正极柱2穿入正极7。电解液8的主要成分是亚硫酰氯和四氯铝酸锂，由电池底部的注液孔注入电池，封口钢珠9是不锈钢，封口钢珠9压封后用激光焊机或电阻焊机把钢珠与电池壳1焊接到一起保证密封。
Claims (3)
1.一种锂电池，包括电池壳（1）、正极柱(2)、盖板（3）、锂金属（5）、隔膜（6）、正极（7）和电解液（8），电池壳（1）为用不锈钢带或低碳钢带拉伸成筒状的电池壳，其特征在于：所述的电池壳（1）为圆柱形，电池壳（1）底部厚度为1㎜；所述的盖板（3）与正极柱（2）之间采用玻璃（4）密封连接；所述的隔膜（6）为一个将正极（7）与锂金属（5）分隔、密封的玻璃纤维圆筒，隔膜（6）上段高于正极（7）与锂金属（5）上边沿，正极柱（2）穿入正极（7）的通孔；所述的电池壳（1）底部设有注液孔，注液孔外端口密封；所述的锂金属（5）为滚压在电池壳（1）内侧壁上的金属锂带；所述的正极（7）为主要含乙炔黑和PTFE成分的正极。
2.根据权利要求1所述的一种锂电池，其特征在于：所述的注液孔外端口设有压封的封口钢珠（9），封口钢珠（9）与电池壳（1）底部焊接。
3.根据权利要求1或2所述的一种锂电池，其特征在于：所述的电解液（8）为主要含亚硫酰氯和四氯铝酸锂的电解液。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106981689B (zh) * | 2016-12-27 | 2019-03-08 | 超威电源有限公司 | 一种吸附式隔板固酸电池及其高效内化成工艺 |
| CN109786843B (zh) * | 2018-12-29 | 2020-12-01 | 刘亚明 | 一种高倍率针式锂离子电池 |
| CN214203912U (zh) * | 2021-03-02 | 2021-09-14 | 珠海冠宇电池股份有限公司 | 电池 |
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| CN201038267Y (zh) * | 2007-01-09 | 2008-03-19 | 濮阳迈奇科技有限公司 | 柱式锂电池 |
| CN203503719U (zh) * | 2013-09-17 | 2014-03-26 | 襄阳艾克特电池科技股份有限公司 | 一种锂电池 |
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| CN1941460A (zh) * | 2006-08-03 | 2007-04-04 | 武汉孚安特科技有限公司 | 锂亚硫酰氯电池锂阳极及其表面处理方法 |
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Effective date of registration: 20220930 Address after: No. 7 Harmony Road, Nancheng, Zaoyang City, Xiangyang City, Hubei Province 441200 Patentee after: Hubei Aichaote New Energy Co.,Ltd. Address before: 441200 East Section of Nancheng Hehe Road, Zaoyang City, Xiangfan City, Hubei Province Patentee before: AHEAD CELL TECHNOLOGY Co.,Ltd. |
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