WO2016187819A1 - Cylindrical lithium ion battery - Google Patents
Cylindrical lithium ion battery Download PDFInfo
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- WO2016187819A1 WO2016187819A1 PCT/CN2015/079844 CN2015079844W WO2016187819A1 WO 2016187819 A1 WO2016187819 A1 WO 2016187819A1 CN 2015079844 W CN2015079844 W CN 2015079844W WO 2016187819 A1 WO2016187819 A1 WO 2016187819A1
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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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- 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 present invention relates to the field of secondary battery technology, and in particular to a cylindrical lithium ion battery.
- Cylindrical lithium battery has the advantages of high voltage, high energy, long service life, good safety performance and wide operating temperature range. Therefore, its application range is more and more widely used in notebooks, power tools, electric bicycles and other products. .
- lithium-ion batteries have the advantages of high operating voltage, light weight, small size, etc., there are also some safety hazards.
- the internal pressure of the battery will rapidly generate high pressure.
- Lithium-ion battery riot caps are important components for ensuring battery safety.
- a cap structure of a laminated structure is generally used. Therefore, it is very meaningful to design a battery cap assembly with higher safety performance and lower internal resistance.
- the present invention provides a cylindrical lithium ion battery comprising a cap assembly, the cap assembly including a seal ring and a separator, a rupture valve and a top cover sequentially located in the seal ring, the partition plate And a rupture valve and a top cover are connected by laser welding, wherein the rupture valve has a first convex portion facing the flat-topped conical structure of the partition, and a sidewall of the first convex portion is opened a groove; the partition plate protrudes outwardly with a connecting piece for connecting with the battery tab, and the bottom plate and the connecting piece are integrally formed.
- the depth of the groove is 1/2 to 4/5 of the thickness of the sidewall of the first convex portion.
- the side wall of the first convex portion is inclined, and the angle of inclination is 40° to 50°.
- the side wall of the first convex portion is inclined, and the angle of inclination is 45°.
- the partition has a second convex portion having a flat top conical structure, and the second convex portion and the first convex portion are connected to each other.
- the opposite sides of the partition plate are provided with openings, and each of the openings extends out of a connecting piece.
- the partition plate is further provided with a vent hole.
- the top cover has a third convex portion of a flat-topped conical structure opposite to the first convex portion, and a plurality of through holes are formed in a sidewall of the third convex portion, the through hole The hole extends to the top of the third raised portion.
- the through hole has an arc shape or a straight line at an edge of the top of the third convex portion.
- the number of the through holes is one, symmetrically distributed on the sidewall of the third convex portion.
- the rupture valve in the cap assembly is provided with a groove (ie, the rupture valve is located at a small thickness here), and the gas generated inside the battery enters the seal between the rupture valve and the baffle through the vent hole of the baffle.
- the air pressure exceeds the safe range, the air pressure pushes up the rupture valve to disengage the rupture valve from the partition, and the battery is disconnected and stops working.
- the air pressure continues to increase until the air pressure breaks the side wall at the groove of the valve plate, and the gas enters the space between the valve plate and the top cover, and the vent hole from the side wall of the top cover Discharge, prevent battery explosion and improve battery safety.
- the partition plate in the cap assembly protrudes outwardly from the connecting piece.
- the welding piece is welded to the battery tab, and the welding is convenient, and the contact area between the connecting piece and the battery tab is large, and the welding is fastened. Therefore, the situation of desoldering or soldering is not easy to occur, and the problem that the internal resistance of the battery is increased by the virtual soldering when the battery tab is directly connected to the bottom of the separator is avoided in the prior art, and the safety performance and reliability of the battery are improved.
- the exhaust through hole of the top cover in the cap assembly is disposed at the edge of the top of the cylindrical cap, and four symmetric vent holes are provided, and the laser welding position is not required to be aligned to avoid the vent hole during laser welding.
- the cylindrical cap can be welded at 360 degrees, which reduces the process difficulty and reduces the operating cost.
- FIG. 1 is a schematic structural view of a cap assembly according to an embodiment of the present invention.
- FIG. 2 is a cross section of a rupture valve according to an embodiment of the present invention.
- FIG 3 is a bottom plan view of a rupture valve according to an embodiment of the present invention.
- FIG. 4 is a top plan view of a separator provided by an embodiment of the present invention.
- FIG. 5 is a top plan view of a top cover according to an embodiment of the present invention.
- FIG. 6 is a top plan view of a top cover according to another embodiment of the present invention.
- a cylindrical lithium ion battery provided by the embodiment includes a cap assembly 100 .
- the cap assembly 100 includes a sealing ring 1 and a partition 2, a rupture valve 3, and a top cover 4, which are sequentially located in the sealing ring 1, the partition 2, a rupture valve 3 and the top cover 4 are connected by laser welding.
- the rupture valve 3 has a first convex portion 31 facing the flat-topped conical structure of the partition plate 2, and a side wall of the first convex portion 31 is opened.
- Groove 32 Specifically, the depth of the groove 32 may be designed to be in the range of 1/2 to 4/5 of the thickness of the side wall of the first convex portion 31.
- the side wall of the first convex portion 31 is inclined, and the angle of inclination thereof may be designed to be in the range of 40° to 50°, and the preferred angle is 45°.
- the air pressure pushes up the rupture valve to disengage the rupture valve from the partition, and the battery is disconnected and stopped. jobs.
- the air pressure continues to increase until the air pressure breaks the side wall at the groove of the valve plate (the thickness of the rupture valve at the groove is relatively small and is more likely to break), and the gas enters the valve plate and The space between the top cover is discharged from the vent hole on the side wall of the top cover to prevent the battery from exploding and improve the safety performance of the battery.
- the partition plate 2 has a connecting piece 21 for connecting with the battery tab, and the bottom plate 2 and the connecting piece 21 are integrally formed.
- the partition 2 has a second raised portion 22 of a flat-topped conical structure, and the second raised portion 22 is connected to the first raised portion 31 (by laser welding).
- the partition plate 2 is provided with opening portions 23 on opposite sides thereof, and each of the opening portions 23 extends out of a connecting piece 21. Further, the partition plate 2 is further provided with a vent hole (24).
- the spacer in the cap assembly is protruded outwardly by the connecting piece, and when soldering, by connecting the connecting piece to the battery pole Ear welding, convenient welding, and the contact area between the connecting piece and the battery tab is large, and the welding is tight, so that the situation of desoldering or soldering is not easy to occur, and the battery ear is directly connected to the gap in the prior art.
- the occurrence of virtual soldering increases the internal resistance of the battery, improving battery safety performance and reliability.
- the top cover 4 has a third raised portion 41 of a flat-topped conical structure opposite to the first raised portion 31, the third A plurality of through holes 42 are formed in the side wall of the boss portion 41, and the through holes 42 extend to the top portion 411 of the third boss portion 41.
- the through hole 42 has an arc shape (as illustrated in FIG. 5) or a straight line (as illustrated in FIG. 6) at the edge of the top portion 411 of the third convex portion 41.
- the number of the through holes 42 is preferably four, and is symmetrically distributed on the side wall of the third convex portion 41.
- the exhaust through hole of the top cover in the cap assembly is disposed at the edge of the top of the cylindrical cap, and four symmetrical vent holes are provided, and the laser welding position is not required to avoid the laser welding position to avoid the vent hole during the laser welding, the cylindrical cap
- the 360 degree position can be welded, which reduces the process difficulty and reduces the operating cost.
- the components in the cap are connected by laser welding to reduce the internal resistance of the battery.
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Abstract
Description
本发明涉及二次电池技术领域，具体涉及一种圆柱形锂离子电池。The present invention relates to the field of secondary battery technology, and in particular to a cylindrical lithium ion battery.
圆柱型锂电池具有电压高、能量大、使用寿命长、安全性能好及工作温度范围宽等优点，因此其应用范围也越来越广泛，现已应用于笔记本、电动工具、电动自行车等产品上。Cylindrical lithium battery has the advantages of high voltage, high energy, long service life, good safety performance and wide operating temperature range. Therefore, its application range is more and more widely used in notebooks, power tools, electric bicycles and other products. .
锂离子电池虽然具有单体电池工作电压高、重量轻、体积小等优点，但同时也存在一些安全隐患，典型的就是在高温或过充过放情况下，电池内部会急剧产生高气压，从而引起自燃或爆炸。锂离子电池防暴盖帽是确保电池安全的重要组件，现有技术中通常采用层叠结构的盖帽组件。因此，设计出具有较高的安全性能以及较低内阻的电池盖帽组件是十分有意义的。Although lithium-ion batteries have the advantages of high operating voltage, light weight, small size, etc., there are also some safety hazards. Typically, in the case of high temperature or overcharge and overdischarge, the internal pressure of the battery will rapidly generate high pressure. Cause spontaneous combustion or explosion. Lithium-ion battery riot caps are important components for ensuring battery safety. In the prior art, a cap structure of a laminated structure is generally used. Therefore, it is very meaningful to design a battery cap assembly with higher safety performance and lower internal resistance.
发明内容Summary of the invention
有鉴于此，本发明提供了一种圆柱形锂离子电池，包括盖帽组件，所述盖帽组件包括一密封圈以及依次位于所述密封圈中的隔板、破裂阀以及顶盖，所述隔板、破裂阀、以及顶盖之间通过激光焊接连接，其中，所述破裂阀具有朝向所述隔板的平顶圆锥结构的第一凸起部，该第一凸起部的侧壁上开设有一凹槽；所述隔板向外凸伸有用于与电池极耳相连接的连接片，所述底板与连接片为一体成型。In view of the above, the present invention provides a cylindrical lithium ion battery comprising a cap assembly, the cap assembly including a seal ring and a separator, a rupture valve and a top cover sequentially located in the seal ring, the partition plate And a rupture valve and a top cover are connected by laser welding, wherein the rupture valve has a first convex portion facing the flat-topped conical structure of the partition, and a sidewall of the first convex portion is opened a groove; the partition plate protrudes outwardly with a connecting piece for connecting with the battery tab, and the bottom plate and the connecting piece are integrally formed.
其中，所述凹槽的深度为所述第一凸起部的侧壁厚度的1/2～4/5。Wherein, the depth of the groove is 1/2 to 4/5 of the thickness of the sidewall of the first convex portion.
其中，所述第一凸起部的侧壁呈倾斜状，其倾斜的角度为40°～50°。Wherein, the side wall of the first convex portion is inclined, and the angle of inclination is 40° to 50°.
其中，所述第一凸起部的侧壁呈倾斜状，其倾斜的角度为45°。Wherein, the side wall of the first convex portion is inclined, and the angle of inclination is 45°.
其中，所述隔板具有平顶圆锥结构的第二凸起部，所述第二凸起部与所述第一凸起部相互连接。 Wherein, the partition has a second convex portion having a flat top conical structure, and the second convex portion and the first convex portion are connected to each other.
其中，所述隔板上其中相对的两侧设置有开口部，每一开口部延伸出一条连接片。Wherein the opposite sides of the partition plate are provided with openings, and each of the openings extends out of a connecting piece.
其中，所述隔板上还设置有排气孔。Wherein, the partition plate is further provided with a vent hole.
其中，所述顶盖具有与所述第一凸起部反向的平顶圆锥结构的第三凸起部，所述第三凸起部的侧壁上开设有多个通孔，所述通孔延伸至第三凸起部的顶部。Wherein the top cover has a third convex portion of a flat-topped conical structure opposite to the first convex portion, and a plurality of through holes are formed in a sidewall of the third convex portion, the through hole The hole extends to the top of the third raised portion.
其中，所述通孔在所述第三凸起部的顶部的边沿呈弧线形或直线形。Wherein, the through hole has an arc shape or a straight line at an edge of the top of the third convex portion.
其中，所述通孔的数量为个，对称分布于所述第三凸起部的侧壁。Wherein, the number of the through holes is one, symmetrically distributed on the sidewall of the third convex portion.
本发明提供的锂离子电池，具有如下的有益效果：The lithium ion battery provided by the invention has the following beneficial effects:
(1)盖帽组件中的破裂阀上设置有凹槽(即破裂阀位于此处的厚度较小)，当电池内部产生的气体由隔板的排气孔进入破裂阀与隔板之间的密封空间，当气压超出安全范围时，气压向上顶起破裂阀使破裂阀与隔板脱离，电池断路，停止工作。此时若电池内部继续产生气体，则气压继续增大，直到气压使阀片凹槽处的侧壁断裂，气体进入阀片与顶盖之间的空间，从顶盖侧壁上的排气孔排出，防止电池爆炸，提高电池的安全性能。(1) The rupture valve in the cap assembly is provided with a groove (ie, the rupture valve is located at a small thickness here), and the gas generated inside the battery enters the seal between the rupture valve and the baffle through the vent hole of the baffle. Space, when the air pressure exceeds the safe range, the air pressure pushes up the rupture valve to disengage the rupture valve from the partition, and the battery is disconnected and stops working. At this time, if gas continues to be generated inside the battery, the air pressure continues to increase until the air pressure breaks the side wall at the groove of the valve plate, and the gas enters the space between the valve plate and the top cover, and the vent hole from the side wall of the top cover Discharge, prevent battery explosion and improve battery safety.
(2)盖帽组件中的隔板通过向外凸伸连接片，焊接时，通过将连接片与电池极耳焊接，焊接方便，而且连接片与电池极耳焊接的接触面积较大，焊接紧固，从而不容易出现脱焊或虚焊的情况，避免了现有技术中将电池极耳直接连接到隔板底部时出现虚焊使电池内阻增加的情况，提高电池安全性能及可靠性。(2) The partition plate in the cap assembly protrudes outwardly from the connecting piece. When welding, the welding piece is welded to the battery tab, and the welding is convenient, and the contact area between the connecting piece and the battery tab is large, and the welding is fastened. Therefore, the situation of desoldering or soldering is not easy to occur, and the problem that the internal resistance of the battery is increased by the virtual soldering when the battery tab is directly connected to the bottom of the separator is avoided in the prior art, and the safety performance and reliability of the battery are improved.
(3)盖帽组件中的顶盖的排气通孔设置于圆柱盖帽顶部的边缘，并且设置4个对称的排气孔，在进行激光焊接时不需对位使激光焊接位置避开排气孔，圆柱盖帽360度位置均可以焊接，减小了工艺难度，降低了作业成本。(3) The exhaust through hole of the top cover in the cap assembly is disposed at the edge of the top of the cylindrical cap, and four symmetric vent holes are provided, and the laser welding position is not required to be aligned to avoid the vent hole during laser welding. The cylindrical cap can be welded at 360 degrees, which reduces the process difficulty and reduces the operating cost.
(4)该盖帽中各组件之间通过激光焊接的方式连接，减小了电池的内阻。(4) The components in the cap are connected by laser welding to reduce the internal resistance of the battery.
图1是本发明实施例提供的盖帽组件的结构示意图。FIG. 1 is a schematic structural view of a cap assembly according to an embodiment of the present invention.
图2是本发明实施例提供的破裂阀的剖面。2 is a cross section of a rupture valve according to an embodiment of the present invention.
图3是本发明实施例提供的破裂阀的仰视图。3 is a bottom plan view of a rupture valve according to an embodiment of the present invention.
图4是本发明实施例提供的隔板的俯视图。 4 is a top plan view of a separator provided by an embodiment of the present invention.
图5是本发明一实施例提供的顶盖的俯视图。FIG. 5 is a top plan view of a top cover according to an embodiment of the present invention.
图6是本发明另一实施例提供的顶盖的俯视图。6 is a top plan view of a top cover according to another embodiment of the present invention.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行详细地描述，显然，所描述的实施例仅仅是本发明一部分实例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护范围。The technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
参阅图1至图6，本实施例提供的一种圆柱形锂离子电池，包括盖帽组件100。其中，如图1所示的，所述盖帽组件100包括一密封圈1以及依次位于所述密封圈1中的隔板2、破裂阀3、以及顶盖4，所述隔板2、破裂阀3以及顶盖4之间通过激光焊接连接。Referring to FIG. 1 to FIG. 6 , a cylindrical lithium ion battery provided by the embodiment includes a
其中，如图2和图3所示的，所述破裂阀3具有朝向所述隔板2的平顶圆锥结构的第一凸起部31，该第一凸起部31的侧壁上开设有一凹槽32。具体地，所述凹槽32的深度可以设计为所述第一凸起部31的侧壁厚度的1/2～4/5的范围内。，所述第一凸起部31的侧壁呈倾斜状，其倾斜的角度可以设计为40°～50°的范围内，优选的角度为45°。Wherein, as shown in FIG. 2 and FIG. 3, the
当电池内部产生的气体由隔板的排气孔进入破裂阀与隔板之间的密封空间，当气压超出安全范围时，气压向上顶起破裂阀使破裂阀与隔板脱离，电池断路，停止工作。此时若电池内部继续产生气体，则气压继续增大，直到气压使阀片凹槽处的侧壁断裂(破裂阀位于凹槽处的厚度相对较小，更易于断裂)，气体进入阀片与顶盖之间的空间，从顶盖侧壁上的排气孔排出，防止电池爆炸，提高电池的安全性能。When the gas generated inside the battery enters the sealed space between the rupture valve and the diaphragm through the vent hole of the partition, when the air pressure exceeds the safe range, the air pressure pushes up the rupture valve to disengage the rupture valve from the partition, and the battery is disconnected and stopped. jobs. At this time, if the gas continues to be generated inside the battery, the air pressure continues to increase until the air pressure breaks the side wall at the groove of the valve plate (the thickness of the rupture valve at the groove is relatively small and is more likely to break), and the gas enters the valve plate and The space between the top cover is discharged from the vent hole on the side wall of the top cover to prevent the battery from exploding and improve the safety performance of the battery.
在本实施例中，如图1和图4所示的，所述隔板2向外凸伸有用于与电池极耳相连接的连接片21，所述底板2与连接片21为一体成型。具体地，所述隔板2具有平顶圆锥结构的第二凸起部22，所述第二凸起部22与所述第一凸起部31相互连接(通过激光焊接)。所述隔板2上其中相对的两侧设置有开口部23，每一开口部23延伸出一条连接片21。进一步地所述隔板2上还设置有排气孔(24)。In the present embodiment, as shown in FIG. 1 and FIG. 4, the
盖帽组件中的隔板通过向外凸伸连接片，焊接时，通过将连接片与电池极 耳焊接，焊接方便，而且连接片与电池极耳焊接的接触面积较大，焊接紧固，从而不容易出现脱焊或虚焊的情况，避免了现有技术中将电池极耳直接连接到隔板底部时出现虚焊使电池内阻增加的情况，提高电池安全性能及可靠性。The spacer in the cap assembly is protruded outwardly by the connecting piece, and when soldering, by connecting the connecting piece to the battery pole Ear welding, convenient welding, and the contact area between the connecting piece and the battery tab is large, and the welding is tight, so that the situation of desoldering or soldering is not easy to occur, and the battery ear is directly connected to the gap in the prior art. At the bottom of the board, the occurrence of virtual soldering increases the internal resistance of the battery, improving battery safety performance and reliability.
在本实施例中，如图5和图6所示的，所述顶盖4具有与所述第一凸起部31反向的平顶圆锥结构的第三凸起部41，所述第三凸起部41的侧壁上开设有多个通孔42，所述通孔42延伸至第三凸起部41的顶部411。具体地，所述通孔42在所述第三凸起部41的顶部411的边沿呈弧线形(如图5的图示)或直线形(如图6的图示)。所述通孔42的数量优选为4个，对称分布于所述第三凸起部41的侧壁。In the present embodiment, as shown in FIGS. 5 and 6, the
盖帽组件中的顶盖的排气通孔设置于圆柱盖帽顶部的边缘，并且设置4个对称的排气孔，在进行激光焊接时不需对位使激光焊接位置避开排气孔，圆柱盖帽360度位置均可以焊接，减小了工艺难度，降低了作业成本。该盖帽中各组件之间通过激光焊接的方式连接，减小了电池的内阻。The exhaust through hole of the top cover in the cap assembly is disposed at the edge of the top of the cylindrical cap, and four symmetrical vent holes are provided, and the laser welding position is not required to avoid the laser welding position to avoid the vent hole during the laser welding, the cylindrical cap The 360 degree position can be welded, which reduces the process difficulty and reduces the operating cost. The components in the cap are connected by laser welding to reduce the internal resistance of the battery.
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。 The above description is only a specific embodiment of the present application, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present application. It should be considered as the scope of protection of this application.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/079844 WO2016187819A1 (en) | 2015-05-26 | 2015-05-26 | Cylindrical lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/079844 WO2016187819A1 (en) | 2015-05-26 | 2015-05-26 | Cylindrical lithium ion battery |
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| WO2016187819A1 true WO2016187819A1 (en) | 2016-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2015/079844 Ceased WO2016187819A1 (en) | 2015-05-26 | 2015-05-26 | Cylindrical lithium ion battery |
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| Country | Link |
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| WO (1) | WO2016187819A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448014A (en) * | 2018-03-07 | 2018-08-24 | 江苏镭腾能源科技有限公司 | A lithium battery cap assembly |
| CN108598300A (en) * | 2018-06-29 | 2018-09-28 | 无锡金杨丸伊电子有限公司 | a kind of battery cap |
| CN110253141A (en) * | 2019-07-03 | 2019-09-20 | 伊欧激光科技（苏州）有限公司 | Cylindrical lithium ion cell cap component assembling pool conveyer structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097604A (en) * | 2011-01-18 | 2011-06-15 | 杨福如 | Lithium ion battery cover cap |
| CN104600351A (en) * | 2014-12-23 | 2015-05-06 | 西宁共进新材料科技有限公司 | Cylindrical lithium ion battery |
-
2015
- 2015-05-26 WO PCT/CN2015/079844 patent/WO2016187819A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097604A (en) * | 2011-01-18 | 2011-06-15 | 杨福如 | Lithium ion battery cover cap |
| CN104600351A (en) * | 2014-12-23 | 2015-05-06 | 西宁共进新材料科技有限公司 | Cylindrical lithium ion battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448014A (en) * | 2018-03-07 | 2018-08-24 | 江苏镭腾能源科技有限公司 | A lithium battery cap assembly |
| CN108598300A (en) * | 2018-06-29 | 2018-09-28 | 无锡金杨丸伊电子有限公司 | a kind of battery cap |
| CN110253141A (en) * | 2019-07-03 | 2019-09-20 | 伊欧激光科技（苏州）有限公司 | Cylindrical lithium ion cell cap component assembling pool conveyer structure |
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