CN109037505A - 一种防爆型圆柱形大容量铝制式锂电池盖板 - Google Patents
一种防爆型圆柱形大容量铝制式锂电池盖板 Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 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
- H01M50/147—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
- 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
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- H—ELECTRICITY
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- 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
- H01M50/30—Arrangements for facilitating escape of gases
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- H—ELECTRICITY
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- 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
- H01M50/543—Terminals
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
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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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- General Chemical & Material Sciences (AREA)
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- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
本发明公开了一种防爆型圆柱形大容量铝制式锂电池盖板，包括有基板、极柱，极柱安装于基板上的安装孔内，极柱顶端具有凸缘部，极柱的凸缘部与基板之间垫置有密封圈，极柱底部安装有绝缘垫片、铆接垫圈，绝缘垫片位于基板与铆接垫圈之间；基板边缘处开设有防爆孔，防爆孔的底面安装有防爆膜。本发明克服现有技术缺陷，该锂离子电池盖板具有生产效率高、过流量大、气密性好。
Description
技术领域
本发明涉及动力锂电池技术领域，具体是一种防爆型圆柱形大容量铝制式锂电池盖板。
背景技术
动力锂离子电池已被广泛应用于新能源汽车、储能设备等产品。以圆柱锂离子电池为例，包括壳体、卷芯和盖板。卷芯包括正极片、隔膜、负极片，通过隔膜隔离正极片、负极片卷绕为一体，其中卷芯顶部有正极片箔材伸出部分，底部有负极片箔材伸出部分。卷芯位于壳体内部，由盖板焊接密封形成电池。动力电池的可靠性和安全性是动力电池制作过程中的一个技术难点和重点。而电池的密封性是影响电池的安全性和可靠性的一个重要因素。如果电池密封性不好，在使用过程中，电池容易吸入空气中的水分，或者电池内部电解液挥发干涸结晶，都会导致电池性能和循环寿命衰减，最终导致电池无法继续使用。特别是大对于容量电池，其对气密性要求更加严格，因为电池容量高，内压相对较高，电池装配后更加容易漏液或漏气，会给电池造成极大的安全隐患，并且电液挥发会造成电池性能和寿命衰减等问题。而动力电池盖板的铆接效果正是涉及电池的气密性的关键因素，良好的铆接效果可以提高电池的安全性能与电池装配成模组的方便快捷等实用性。
现有的动力电池盖板，极柱为圆柱形，极柱穿过圆形的极柱孔，通过密封垫圈与电池盖板铆接，止转扭矩比较小。电池电路在于外界电路把紧过程中，很容易转动极柱，不仅破坏了电池的密封性能，也出现了短路隐患。
发明内容
本发明的目的在于提供一种防爆型圆柱形大容量铝制式锂电池盖板，克服现有技术缺陷，该锂离子电池盖板具有生产效率高、过流量大、气密性好。
本发明的技术方案如下：
一种防爆型圆柱形大容量铝制式锂电池盖板，包括有基板、极柱，极柱安装于基板上的安装孔内，极柱顶端具有凸缘部，极柱的凸缘部与基板之间垫置有密封圈，极柱底部安装有绝缘垫片、铆接垫圈，绝缘垫片位于基板与铆接垫圈之间；基板边缘处开设有防爆孔，防爆孔的底面安装有防爆膜。
所述的极柱将绝缘垫片、密封圈、铆接垫圈和基板铆接为一体。
所述的防爆孔的顶面安装有保护膜。
与现有技术相比，本发明的有益效果如下：
本发明的正负极不在同一个盖板，提高了电池单体电芯能量密度，在电池组组模的过程中节省了电池箱体占用的空间。相对传统焊防爆罩的工艺省去了焊接工艺，提高了品质，减少了制造工序，节约了生产成本。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1为本发明的结构示的爆炸示意图。
图2为本发明的结构示的组装示意图。
具体实施方式
参见附图，一种防爆型圆柱形大容量铝制式锂电池盖板，包括有基板1、极柱2，极柱2安装于基板1上的安装孔3内，极柱2顶端具有凸缘部4，极柱2的凸缘部4与基板1之间垫置有密封圈5，极柱2底部安装有绝缘垫片6、铆接垫圈7，绝缘垫片6位于基板1与铆接垫圈7之间；基板1边缘处开设有防爆孔8，防爆孔8的底面安装有防爆膜9，防爆孔8的顶面安装有保护膜10；极柱2将绝缘垫片6、密封圈5、铆接垫圈7和基板1铆接为一体。
绝缘垫片与密封圈位于极柱与基板、铆接垫圈之间，起到绝缘和密封作用，电池防爆结构是在基板的边缘处设有凹陷处，凹陷处的底面设有防爆孔。
Claims (3)
1.一种防爆型圆柱形大容量铝制式锂电池盖板，包括有基板、极柱，其特征在于，极柱安装于基板上的安装孔内，极柱顶端具有凸缘部，极柱的凸缘部与基板之间垫置有密封圈，极柱底部安装有绝缘垫片、铆接垫圈，绝缘垫片位于基板与铆接垫圈之间；基板边缘处开设有防爆孔，防爆孔的底面安装有防爆膜。
2.根据权利要求1所述防爆型圆柱形大容量铝制式锂电池盖板，其特征在于，所述的极柱将绝缘垫片、密封圈、铆接垫圈和基板铆接为一体。
3.根据权利要求1所述防爆型圆柱形大容量铝制式锂电池盖板，其特征在于，所述的防爆孔的顶面安装有保护膜。
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| CN201810592479.0A CN109037505A (zh) | 2018-06-11 | 2018-06-11 | 一种防爆型圆柱形大容量铝制式锂电池盖板 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232721A1 (zh) * | 2020-05-18 | 2021-11-25 | 联动天翼新能源有限公司 | 一种改进的电池铝盖板 |
| CN114171858A (zh) * | 2021-12-10 | 2022-03-11 | 合肥力翔电池科技有限责任公司 | 一种圆形锂离子电池的极柱结构 |
| WO2022167586A1 (en) * | 2021-02-05 | 2022-08-11 | Northvolt Ab | Cylindrical secondary cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110097612A1 (en) * | 2009-10-28 | 2011-04-28 | Lee Yeh-Shing | Secondary battery end cap assembly |
| CN204045642U (zh) * | 2014-09-17 | 2014-12-24 | 浙江中泽电气有限公司 | 一种大容量锂电池盖板 |
| CN205920998U (zh) * | 2016-07-25 | 2017-02-01 | 深圳塔菲尔新能源科技有限公司 | 动力电池防爆盖板 |
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2018
- 2018-06-11 CN CN201810592479.0A patent/CN109037505A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110097612A1 (en) * | 2009-10-28 | 2011-04-28 | Lee Yeh-Shing | Secondary battery end cap assembly |
| CN204045642U (zh) * | 2014-09-17 | 2014-12-24 | 浙江中泽电气有限公司 | 一种大容量锂电池盖板 |
| CN205920998U (zh) * | 2016-07-25 | 2017-02-01 | 深圳塔菲尔新能源科技有限公司 | 动力电池防爆盖板 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232721A1 (zh) * | 2020-05-18 | 2021-11-25 | 联动天翼新能源有限公司 | 一种改进的电池铝盖板 |
| WO2022167586A1 (en) * | 2021-02-05 | 2022-08-11 | Northvolt Ab | Cylindrical secondary cell |
| CN114171858A (zh) * | 2021-12-10 | 2022-03-11 | 合肥力翔电池科技有限责任公司 | 一种圆形锂离子电池的极柱结构 |
| CN114171858B (zh) * | 2021-12-10 | 2024-03-29 | 合肥力翔电池科技有限责任公司 | 一种圆形锂离子电池的极柱结构 |
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