WO2011003367A1 - Combined explosion-proof cover cap for cylindrical battery - Google Patents
Combined explosion-proof cover cap for cylindrical battery Download PDFInfo
- Publication number
- WO2011003367A1 WO2011003367A1 PCT/CN2010/075104 CN2010075104W WO2011003367A1 WO 2011003367 A1 WO2011003367 A1 WO 2011003367A1 CN 2010075104 W CN2010075104 W CN 2010075104W WO 2011003367 A1 WO2011003367 A1 WO 2011003367A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- explosion
- connecting piece
- proof
- cylindrical battery
- piece
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000002955 isolation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 229910000679 solder Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 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
- H01M50/10—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
-
- 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
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/155—Lids or covers characterised by the material
- H01M50/157—Inorganic material
- H01M50/159—Metals
-
- 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
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- 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
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary 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
- 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 utility model relates to a lithium battery, in particular to a cylindrical lithium battery.
- the (positive) safety combination cap for cylindrical batteries on the market today consists of a steel cap, an organic positive temperature coefficient thermistor (or metal ring), and a rupture disk (aluminum).
- the above three components are stacked together, and the surrounding edge is a sealing ring. Due to the welded connection between the rupture disk (aluminum) and the connecting piece, the battery assembly cap is assembled into the battery.
- the outer sealing ring will be squeezed, so that part of the sealing ring will be squeezed into the connecting piece during the deformation process of the sealing ring, and the connecting joint between the rupture disk (aluminum) and the connecting piece will be pulled, and the solder joint will be connected. Extrusion seems to be broken, or it simply causes the joint solder joint to break, causing the battery to be scrapped.
- the utility model provides a novel cylindrical battery combination cap.
- a cylindrical battery explosion-proof combined cap including a steel cap, an organic positive temperature coefficient thermistor, a rupture disk, a connecting piece and a spacer, and the outer circumference of the above components is included a sealing ring, the rupture disk is a "Z"-shaped structure;
- the spacer ring is polypropylene
- the sealing ring is polypropylene
- the sealing ring is provided with a step
- the sealing ring is provided with a groove
- the rupture disk is an aluminum sheet
- the connecting piece is an aluminum piece
- the rupture disk and the connecting piece are connected by solder joints.
- the utility model has the beneficial effects that the structure more reliably ensures that when the battery is abnormal and the internal pressure rises, the rupture disk and the connecting piece are effectively insulated; when the battery is abnormal, the battery internal circuit is more reliably broken, which is more effective.
- the ground protects the safety protection function of the explosion-proof combination cap.
- FIG. 1 Schematic diagram of the cap structure of the present invention.
- Figure la a schematic view of the structure of the utility model.
- Figure 2 Schematic diagram of the "Z" shape of the rupture disk of the utility model.
- Figure 3 Schematic diagram of the isolation ring of the utility model.
- Figure 4 Schematic diagram of the sealing ring of the utility model.
- Figure 5 is a schematic view showing the structure of the connecting piece of the present invention.
- Cylindrical explosion-proof combination caps including steel caps 1, organic positive temperature coefficient thermistors (or metal rings) 2, rupture discs 3, connecting lugs 5, spacers 6 and the outer circumference of the above components are covered with seals 4.
- the structure of the rupture disk 3 is a "Z"-shaped structure; the spacer ring 6 is polypropylene; the sealing ring 4 is polypropylene; and the structure of the sealing ring 4 is stepped;
- the B of the sealing ring 4 is structured with a groove; the rupture disk 3 is an aluminum piece; the connecting piece 5 is an aluminum piece; and the rupture disk 3 and the connecting piece 5 are connected by solder joints.
- the sealing ring 4 does not cover the connecting piece 5, and the structure of the rupture disk 3 is improved compared with the original one; the advantage of adding the isolation ring 6:
- the inside When the battery is abnormal, the inside generates a large amount of heat,
- the spacer ring functions as the insulating rupture disk 3 and the connecting piece 5;
- the structure of the rupture disk 3 is different from the original, and is improved as "Z" "The glyph structure, the function is to fix the position of the spacer ring 6;
- the step is added to the structure of the sealing ring 4, the purpose is to prevent the connecting piece 5 from being separated from the original position or falling after being separated from the rupture disk 3, thereby causing contact with the battery case
- the internal short circuit of the battery occurs;
- the groove is designed in the structure of the sealing ring 4, the purpose of which is to reduce the extrusion deformation of the sealing ring 4 in the battery sealing, to avoid the extrusion
- This structure more reliably ensures that the rupture disk 3 and the connecting piece 5 are effectively insulated from each other due to abnormality of the battery and an increase in internal pressure.
- the internal battery can be disconnected more reliably, and the safety protection function of the explosion-proof combination cap can be more effectively utilized.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
A combined explosion-proof cover cap for a cylindrical battery comprises a sealing ring (4) wrapped on the periphery of a steel cap (1), an organic positive temperature coefficient thermistor (2), an explosion-proof piece (3), a connecting piece (5) and an isolation ring (6), wherein the explosion-proof piece (3) is a Z-shaped structure. During the actual production of the batteries, the improved structure can prevent the sealing ring (4) from distortion due to press during the process for sealing the batteries, which results in damage of a welding point between the explosion-proof piece (3) and the connecting piece (5), or even breakaway of the connecting piece (5) which results in reject of a battery. The structure reliably ensures that the explosion-proof piece (3) and the connecting piece (5) are effectively isolated in an insulating way when the battery is abnormal and internal pressure increases, thus effectively improves the safety of the combined explosion-proof cover cap.
Description
圆柱电池防爆组合盖帽 技术领域 Cylindrical battery explosion-proof combination cap
本实用新型涉及一种锂电池， 特别涉及一种圆柱锂电池。 The utility model relates to a lithium battery, in particular to a cylindrical lithium battery.
背景技术 说 Background art
现市场上的圆柱电池的（正极）安全组合帽是由钢帽、有机正温度系数热敏 电阻器 （或金属环）、 防爆片 （铝） 组成。 以上三个部件叠在一起， 周围边缘是 密封圈， 由于防爆片 （铝）和连接片之间焊接连接， 电池组合帽在装配入电池密 书 The (positive) safety combination cap for cylindrical batteries on the market today consists of a steel cap, an organic positive temperature coefficient thermistor (or metal ring), and a rupture disk (aluminum). The above three components are stacked together, and the surrounding edge is a sealing ring. Due to the welded connection between the rupture disk (aluminum) and the connecting piece, the battery assembly cap is assembled into the battery.
封过程中会挤压外围的密封圈，致使密封圈变形过程中，密封圈的一部分会挤压 到连接片， 拉扯到防爆片 （铝）和连接片之间的连接焊点， 将连接焊点挤压得似 断非断， 或者干脆导致连结焊点断裂， 致使电池报废。 During the sealing process, the outer sealing ring will be squeezed, so that part of the sealing ring will be squeezed into the connecting piece during the deformation process of the sealing ring, and the connecting joint between the rupture disk (aluminum) and the connecting piece will be pulled, and the solder joint will be connected. Extrusion seems to be broken, or it simply causes the joint solder joint to break, causing the battery to be scrapped.
发明内容 Summary of the invention
针对现有的圆柱电池组合帽的缺点， 本实用新型提供一种新型的圆柱电池 组合帽。 In view of the shortcomings of the existing cylindrical battery assembly cap, the utility model provides a novel cylindrical battery combination cap.
为了实现上述目的，本实用新型所采取的技术方案是： 圆柱电池防爆组合盖 帽， 包括钢帽、 有机正温度系数热敏电阻器、 防爆片、 连接片和隔离圈， 以上组 件外圆周包履有密封圈， 所述的防爆片为 " Z"字形结构； In order to achieve the above object, the technical solution adopted by the utility model is: a cylindrical battery explosion-proof combined cap, including a steel cap, an organic positive temperature coefficient thermistor, a rupture disk, a connecting piece and a spacer, and the outer circumference of the above components is included a sealing ring, the rupture disk is a "Z"-shaped structure;
所述的隔离圈为聚丙烯； The spacer ring is polypropylene;
所述的密封圈为聚丙烯； The sealing ring is polypropylene;
所述的密封圈上设置有台阶； The sealing ring is provided with a step;
所述的密封圈上设置有凹槽； The sealing ring is provided with a groove;
所述的防爆片为铝片； The rupture disk is an aluminum sheet;
所述的连接片为铝片； The connecting piece is an aluminum piece;
所述的防爆片和连接片之间焊点连接。 The rupture disk and the connecting piece are connected by solder joints.
本实用新型的有益效果： 该结构更可靠地保证了当电池发生异常， 内部压力 升高时，有效地绝缘隔离防爆片和连接片； 当电池发生异常时更可靠地将电池内 部断路， 更有效地发挥防爆组合盖帽的安全保护功能。
附图说明 The utility model has the beneficial effects that the structure more reliably ensures that when the battery is abnormal and the internal pressure rises, the rupture disk and the connecting piece are effectively insulated; when the battery is abnormal, the battery internal circuit is more reliably broken, which is more effective. The ground protects the safety protection function of the explosion-proof combination cap. DRAWINGS
图 1、 本实用新型的盖帽结构示意图。 Figure 1. Schematic diagram of the cap structure of the present invention.
图 la、 本实用新型的结构示意图。 Figure la, a schematic view of the structure of the utility model.
图 2、 本实用新型防爆片 " Z "字形的结构示意图。 Figure 2. Schematic diagram of the "Z" shape of the rupture disk of the utility model.
图 3、 本实用新型隔离圈的结构示意图。 Figure 3. Schematic diagram of the isolation ring of the utility model.
图 3a、 图 3的侧视图。 Figure 3a, Figure 3 side view.
图 4、 本实用新型密封圈的结构示意图。 Figure 4. Schematic diagram of the sealing ring of the utility model.
图 4a、 图 4的侧视图。 Figure 4a, Figure 4 side view.
图 5、 本实用新型连接片的结构示意图。 Figure 5 is a schematic view showing the structure of the connecting piece of the present invention.
具体实施方式 detailed description
请参见附图说明其实施过程： Please refer to the figure to explain its implementation process:
圆柱电池防爆组合盖帽， 包括钢帽 1， 有机正温度系数热敏电阻器 （或金 属环） 2， 防爆片 3， 连接片 5， 隔离圈 6以及上述组件的外圆周包履有密封圈 4。 所述的防爆片 3的结构为 " Z "字形结构； 所述的隔离圈 6为聚丙烯； 所述的密 封圈 4为聚丙烯； 所述的密封圈 4的 A处结构有台阶； 所述的密封圈 4的 B处结 构有凹槽； 所述的防爆片 3为铝片； 所述的连接片 5为铝片； 所述的防爆片 3 和连接片 5之间焊点连接。 Cylindrical explosion-proof combination caps, including steel caps 1, organic positive temperature coefficient thermistors (or metal rings) 2, rupture discs 3, connecting lugs 5, spacers 6 and the outer circumference of the above components are covered with seals 4. The structure of the rupture disk 3 is a "Z"-shaped structure; the spacer ring 6 is polypropylene; the sealing ring 4 is polypropylene; and the structure of the sealing ring 4 is stepped; The B of the sealing ring 4 is structured with a groove; the rupture disk 3 is an aluminum piece; the connecting piece 5 is an aluminum piece; and the rupture disk 3 and the connecting piece 5 are connected by solder joints.
原来结构中无隔离圈 6， 密封圈 4未包履连接片 5， 防爆片 3的结构较原有 的有改进； 增加隔离圈 6的好处： 当电池发生异常， 内部产生较大的热量， 内压 升高， 拉断了防爆片 3和连接片 5之间连接焊点时， 隔离圈起绝缘隔离防爆片 3 和连接片 5的作用； 防爆片 3的结构与原来不同， 改进成了 " Z "字形结构， 其 作用是为了固定隔离圈 6的位置； 密封圈 4的结构中增加了台阶， 目的是防止连 接片 5在与防爆片 3分离后不至于偏离原位或掉落导致接触电池壳壁而发生电池 内部短路的现象； 密封圈 4 的结构中设计了凹槽， 其目的是为了减小密封圈 4 在电池封口中的挤压变形，避免发生对连接片 5的挤压，减少因挤压而损伤防爆 片 3和连接片 5之间连接焊点的可能性。该结构更可靠地保证了因电池发生异常， 内部压力升高时， 有效地绝缘隔离防爆片 3和连接片 5。 当电池发生异常时更可 靠地将电池内部断路， 更有效地发挥防爆组合盖帽的安全保护功能。
In the original structure, there is no isolation ring 6, the sealing ring 4 does not cover the connecting piece 5, and the structure of the rupture disk 3 is improved compared with the original one; the advantage of adding the isolation ring 6: When the battery is abnormal, the inside generates a large amount of heat, When the pressure is raised and the connection of the solder joint between the rupture disk 3 and the connecting piece 5 is broken, the spacer ring functions as the insulating rupture disk 3 and the connecting piece 5; the structure of the rupture disk 3 is different from the original, and is improved as "Z" "The glyph structure, the function is to fix the position of the spacer ring 6; the step is added to the structure of the sealing ring 4, the purpose is to prevent the connecting piece 5 from being separated from the original position or falling after being separated from the rupture disk 3, thereby causing contact with the battery case The internal short circuit of the battery occurs; the groove is designed in the structure of the sealing ring 4, the purpose of which is to reduce the extrusion deformation of the sealing ring 4 in the battery sealing, to avoid the extrusion of the connecting piece 5, and to reduce the cause Squeeze to damage the possibility of connecting the solder joint between the rupture disk 3 and the connecting piece 5. This structure more reliably ensures that the rupture disk 3 and the connecting piece 5 are effectively insulated from each other due to abnormality of the battery and an increase in internal pressure. When the battery is abnormal, the internal battery can be disconnected more reliably, and the safety protection function of the explosion-proof combination cap can be more effectively utilized.
Claims
1、 圆柱电池防爆组合盖帽， 包括钢帽 （1 )、 有机正温度系数热敏电阻器 （2)、 防爆片 （3)、 连接片 （5) 和隔离圈 （6)， 以上组件外圆周包履有密封圈 （4)， 其特征在于， 所述的防爆片 （3) 为 "Z"字形结构。 1. Explosion-proof combination cap for cylindrical battery, including steel cap (1), organic positive temperature coefficient thermistor (2), rupture disk (3), connecting piece (5) and spacer (6), the outer circumference of the above components The sealing ring (4) is characterized in that the rupture disk (3) has a "Z" shape structure.
2、 根据权利要求 1所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的隔离圈 (6) 为聚丙烯。 2. The cylindrical battery explosion-proof combination cap according to claim 1, wherein the spacer (6) is polypropylene.
3、 根据权利要求 1所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的密封圈 (4) 为聚丙烯。 3. The cylindrical battery explosion-proof combination cap according to claim 1, wherein the sealing ring (4) is polypropylene.
4、 根据权利要求 1或 3所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的密 封圈 （4) 上设置有台阶。 The explosion-proof combined cap for a cylindrical battery according to claim 1 or 3, characterized in that the seal ring (4) is provided with a step.
5、 根据权利要求 4所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的密封圈The explosion-proof combination cap of a cylindrical battery according to claim 4, wherein the seal ring
(4) 上设置有凹槽。 (4) A groove is provided on it.
6、 根据权利要求 1所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的防爆片 ( 3) 为铝片。 6. The cylindrical battery explosion-proof combination cap according to claim 1, wherein the rupture disk (3) is an aluminum piece.
7、 根据权利要求 1 所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的连接片7. The cylindrical battery explosion-proof combination cap according to claim 1, wherein the connecting piece
( 5) 为铝片。 (5) is an aluminum sheet.
8、 根据权利要求 1所述的圆柱电池防爆组合盖帽， 其特征在于， 所述的防爆片 ( 3) 和连接片 （5) 之间为焊接连接。
8. The cylindrical battery explosion-proof combination cap according to claim 1, wherein the rupture disk (3) and the connecting piece (5) are welded.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920185751.X | 2009-07-10 | ||
| CN200920185751XU CN201435414Y (en) | 2009-07-10 | 2009-07-10 | Anti-explosion combined cover cap of cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011003367A1 true WO2011003367A1 (en) | 2011-01-13 |
Family
ID=42054230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2010/075104 WO2011003367A1 (en) | 2009-07-10 | 2010-07-12 | Combined explosion-proof cover cap for cylindrical battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201435414Y (en) |
| WO (1) | WO2011003367A1 (en) |
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| CN103236505A (en) * | 2013-04-28 | 2013-08-07 | 泰兴市振兴电子有限公司 | Power type lithium ion battery nut cap and welding process thereof |
| EP3300134A4 (en) * | 2015-06-05 | 2018-05-09 | LG Chem, Ltd. | Cap assembly for secondary battery |
| WO2020204385A1 (en) * | 2019-04-01 | 2020-10-08 | 삼성에스디아이(주) | Secondary battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201435414Y (en) * | 2009-07-10 | 2010-03-31 | 杨学新 | Anti-explosion combined cover cap of cylindrical battery |
| CN102244211A (en) * | 2010-05-14 | 2011-11-16 | 深圳市比克电池有限公司 | Cell cover cap combination and cylindrical secondary cell |
| CN101916833A (en) * | 2010-08-20 | 2010-12-15 | 芜湖根源科技有限公司 | Explosion-proof cover cap of lithium battery |
| KR101184403B1 (en) * | 2010-10-21 | 2012-09-19 | 주식회사 엘지화학 | Cap assembly and secondary battery using the same |
| CN102005549A (en) * | 2010-10-27 | 2011-04-06 | 杨学新 | Explosion-proof combined cap of high-power battery |
| CN102088064A (en) * | 2011-01-04 | 2011-06-08 | 无锡市金杨新型电源有限公司 | Novel battery cover cap structure |
| CN102290542B (en) * | 2011-07-13 | 2015-09-02 | 无锡市金杨新型电源有限公司 | Cap for low-resistance lithium ion battery |
| CN102364719B (en) * | 2011-11-11 | 2013-06-05 | 深圳市豪鹏科技有限公司 | Anti-explosion secondary battery |
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| CN109962182A (en) * | 2017-12-22 | 2019-07-02 | 比亚迪股份有限公司 | Battery cover board assembly, single battery, battery modules, power battery and electric car |
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| CN103236505A (en) * | 2013-04-28 | 2013-08-07 | 泰兴市振兴电子有限公司 | Power type lithium ion battery nut cap and welding process thereof |
| EP3300134A4 (en) * | 2015-06-05 | 2018-05-09 | LG Chem, Ltd. | Cap assembly for secondary battery |
| US10490792B2 (en) | 2015-06-05 | 2019-11-26 | Lg Chem, Ltd. | Cap assembly for secondary battery |
| WO2020204385A1 (en) * | 2019-04-01 | 2020-10-08 | 삼성에스디아이(주) | Secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201435414Y (en) | 2010-03-31 |
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