CN206250265U - Can fluid injection lug and lithium battery - Google Patents
Can fluid injection lug and lithium battery Download PDFInfo
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- CN206250265U CN206250265U CN201621406558.0U CN201621406558U CN206250265U CN 206250265 U CN206250265 U CN 206250265U CN 201621406558 U CN201621406558 U CN 201621406558U CN 206250265 U CN206250265 U CN 206250265U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 title claims 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims abstract description 82
- 238000007789 sealing Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 239000002985 plastic film Substances 0.000 abstract description 15
- 229920006255 plastic film Polymers 0.000 abstract description 15
- 239000007788 liquid Substances 0.000 abstract description 13
- 239000003792 electrolyte Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000008151 electrolyte solution Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Classifications
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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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
本实用新型公开了一种可注液极耳及锂电池，该可注液极耳包括金属筒，所述金属筒上内套有热封管，所述金属筒的外壁上设置有壳体连接部，所述金属筒的一端设置有电池极片连接部。本实用新型提供的可注液极耳，通过热封管向锂电池的内部注入电解液，注入电解液后通过热封管进行热封，由于没有铝塑膜的刺破，如此一方面减少了注液的操作步骤，也减少了铝塑膜的额外耗费，从而降低了电池的制造成本；另一方面，整体的减少了成品电池的漏液风险和外观损伤的风险，能够提高电池的存储与使用寿命以及安全性能。
The utility model discloses a liquid-injectable tab and a lithium battery. The liquid-injectable tab includes a metal cylinder, a heat-sealed tube is set inside the metal cylinder, and a shell connection is arranged on the outer wall of the metal cylinder. part, and one end of the metal cylinder is provided with a battery pole piece connection part. The liquid-injectable tab provided by the utility model injects the electrolyte solution into the lithium battery through a heat-sealed tube, and after injecting the electrolyte, heat-seals it through the heat-sealed tube. Since there is no puncture of the aluminum-plastic film, on the one hand it reduces The operation steps of liquid injection also reduce the extra consumption of aluminum-plastic film, thereby reducing the manufacturing cost of the battery; service life and safety performance.
Description
技术领域technical field
本实用新型涉及电池技术，具体涉及一种可注液极耳及锂电池。The utility model relates to battery technology, in particular to a liquid-injectable tab and a lithium battery.
背景技术Background technique
极耳是锂离子电池的主要组件之一。锂离子电池分为正极与负极，极耳是从电芯中将正负极的电流引出来的金属导电体。极耳主要有两种材料，电池的正极采用铝材料，负极采用铜镀镍材料，现有技术中的极耳包括金属带和设置于所述金属带中部的胶带。Tabs are one of the main components of lithium-ion batteries. Lithium-ion batteries are divided into positive and negative electrodes, and the tab is a metal conductor that draws the current of the positive and negative electrodes from the battery cell. There are mainly two kinds of materials for the tabs. The positive pole of the battery is made of aluminum, and the negative pole is made of nickel-plated copper. The tabs in the prior art include a metal strip and an adhesive tape arranged in the middle of the metal strip.
锂电子电池的内部设置有电解液，锂离子在电解液中通过迁移实现电池内部的离子导电。将电解液注入锂离子电池的壳体内部(注液)是锂离子电池生产的重要工序之一。现有技术中，电芯的一侧预留有开口，开口上额外留有一定宽度的铝塑膜，在惰性气体的保护下，通过注液管将一定量的电解液通过预留的开口注入组装完成后的电池内部，注液完成后，将额外留下的铝塑膜刺破，并由铝塑膜的破口处将电芯内残余的废气抽净。最后再将铝塑膜进行第二次热封，并裁去多余的铝塑膜。The interior of the lithium electronic battery is provided with an electrolyte, and lithium ions migrate in the electrolyte to realize ionic conduction inside the battery. Injecting the electrolyte into the casing of the lithium-ion battery (liquid injection) is one of the important processes in the production of lithium-ion batteries. In the prior art, an opening is reserved on one side of the cell, and an aluminum-plastic film of a certain width is additionally left on the opening. Under the protection of an inert gas, a certain amount of electrolyte is injected through the reserved opening through the liquid injection tube. Inside the battery after assembly, after the liquid injection is completed, puncture the extra aluminum-plastic film left behind, and exhaust the residual exhaust gas in the battery cell through the break of the aluminum-plastic film. Finally, the aluminum-plastic film is heat-sealed for the second time, and the excess aluminum-plastic film is cut off.
现有技术的不足之处在于，第一，由于需要在电池的注液侧进行两次热封和一次刺破的过程，也需要废弃一部分铝塑膜，造成了价格高昂的铝塑膜的额外耗费。第二，由于铝塑膜热封区域较大，更容易被电解液污染，造成热封不良的情况，从而导致后续的电池漏液现象，甚至失去充放电能力。The deficiencies of the prior art are, first, due to the need to perform two heat-sealing and one puncture processes on the liquid injection side of the battery, a part of the aluminum-plastic film also needs to be discarded, resulting in additional costs for the expensive aluminum-plastic film. expend. Second, due to the large heat-sealing area of the aluminum-plastic film, it is more likely to be contaminated by the electrolyte, resulting in poor heat-sealing, resulting in subsequent battery leakage and even loss of charge and discharge capabilities.
实用新型内容Utility model content
本实用新型的目的是提供一种可注液极耳及锂电池，以解决现有技术中的上述不足之处。The purpose of this utility model is to provide a liquid-injectable tab and a lithium battery to solve the above-mentioned shortcomings in the prior art.
为了实现上述目的，本实用新型提供如下技术方案：In order to achieve the above object, the utility model provides the following technical solutions:
一种用于锂电池的可注液极耳，包括金属筒，所述金属筒上内套有热封管，所述金属筒的外壁上设置有壳体连接部，所述金属筒的一端设置有电池极片连接部。A liquid-injectable tab for a lithium battery, comprising a metal cylinder with a heat-sealed tube inside, the outer wall of the metal cylinder is provided with a shell connection part, and one end of the metal cylinder is provided with a There is a battery pole piece connection part.
上述的可注液极耳，所述金属筒和所述热封管过盈配合。In the aforementioned liquid-injectable tab, the metal cylinder and the heat-sealed tube are in interference fit.
上述的可注液极耳，所述壳体连接部为设置于所述金属筒上的胶带。In the above-mentioned liquid-injectable tab, the connecting part of the housing is an adhesive tape arranged on the metal cylinder.
上述的可注液极耳，还包括过渡件，所述电池极片连接部为金属平板，所述金属平板通过过渡件连接于所述金属筒上。The above-mentioned liquid-injectable tab further includes a transition piece, the connecting part of the battery pole piece is a metal plate, and the metal plate is connected to the metal cylinder through the transition piece.
上述的可注液极耳，所述过渡件为弧形板件，所述弧形板件的中部连接于所述金属筒上，所述金属平板的两端分别连接于所述弧形板件的两端。In the above-mentioned liquid-injectable tab, the transition piece is an arc-shaped plate, the middle of the arc-shaped plate is connected to the metal cylinder, and the two ends of the metal flat plate are respectively connected to the arc-shaped plate both ends.
上述的可注液极耳，所述金属筒和所述热封管的径向截面均为椭圆形。In the aforementioned liquid-injectable tab, the radial cross-sections of the metal cylinder and the heat-sealed tube are both elliptical.
上述的可注液极耳，所述电池极片连接部的厚度和所述金属筒的厚度均介于0.2mm-0.5mm之间，所述热封管的厚度为0.05mm-0.2mm之间。For the above-mentioned liquid-injectable tab, the thickness of the connecting part of the battery pole piece and the thickness of the metal cylinder are both between 0.2mm-0.5mm, and the thickness of the heat-sealed tube is between 0.05mm-0.2mm .
上述的可注液极耳，所述椭圆形的长轴与短轴的比值不小于2。In the aforementioned liquid-injectable tab, the ratio of the major axis to the minor axis of the ellipse is not less than 2.
上述的可注液极耳，所述金属平板的宽度与所述金属筒的宽度相等。In the aforementioned liquid-injectable tab, the width of the metal flat plate is equal to the width of the metal cylinder.
一种锂电池，包括壳体和设置于所述壳体端部的电池极片，还包括上述的可注液极耳，所述金属筒通过所述壳体连接部连接于所述壳体内部，所述电池极片连接部与所述电池极片相连接。A lithium battery, comprising a case and a battery pole piece arranged at the end of the case, and also includes the above-mentioned liquid-injectable tab, and the metal cylinder is connected to the inside of the case through the connection part of the case , the battery pole piece connecting portion is connected to the battery pole piece.
在上述技术方案中，本实用新型提供的可注液极耳，通过热封管向锂电池的内部注入电解液，注入电解液后通过热封管进行热封，由于没有铝塑膜的刺破，如此一方面减少了注液的操作步骤，也减少了铝塑膜的额外耗费，从而降低了电池的制造成本；另一方面，整体的减少了成品电池的漏液风险和外观损伤的风险，能够提高电池的存储与使用寿命以及安全性能。In the above technical solution, the liquid-injectable tab provided by the utility model injects the electrolyte into the lithium battery through a heat-sealed tube, and after injecting the electrolyte, it is heat-sealed through the heat-sealed tube, since there is no puncture of the aluminum-plastic film In this way, on the one hand, the operation steps of liquid injection are reduced, and the additional consumption of aluminum-plastic film is reduced, thereby reducing the manufacturing cost of the battery; on the other hand, the risk of liquid leakage and appearance damage of the finished battery are reduced as a whole, It can improve the storage, service life and safety performance of the battery.
由于上述可注液极耳具有上述技术效果，包含该可注液极耳的锂电池也应具有相应的技术效果。Since the above-mentioned liquid-injectable tab has the above-mentioned technical effect, the lithium battery including the liquid-injectable tab should also have the corresponding technical effect.
附图说明Description of drawings
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型中记载的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.
图1为本实用新型实施例提供的可注液极耳的结构示意图；Fig. 1 is a schematic structural diagram of a liquid-injectable tab provided by an embodiment of the present invention;
图2为本实用新型实施例提供的金属筒和热封管的状态示意图之一；Fig. 2 is one of the state schematic diagrams of the metal cylinder and the heat-sealed tube provided by the embodiment of the present invention;
图3为本实用新型实施例提供的金属筒和热封管的状态示意图之二；Figure 3 is the second schematic diagram of the state of the metal cylinder and the heat-sealed tube provided by the embodiment of the present invention;
图4为本实用新型实施例提供的电池极片连接部的结构示意图。Fig. 4 is a schematic structural diagram of the connection part of the battery pole piece provided by the embodiment of the present invention.
附图标记说明：Explanation of reference signs:
1、金属筒；2、热封管；3、壳体连接部；4、电池极片连接部；5、过渡件。1. Metal cylinder; 2. Heat-sealed tube; 3. Shell connection; 4. Battery pole piece connection; 5. Transition piece.
具体实施方式detailed description
为了使本领域的技术人员更好地理解本实用新型的技术方案，下面将结合附图对本实用新型作进一步的详细介绍。In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further introduced in detail below in conjunction with the accompanying drawings.
如图1-4所示，本实用新型实施例提供的一种用于锂电池的可注液极耳，包括金属筒1，金属筒1上内套有热封管2，金属筒1的外壁上设置有壳体连接部3，金属筒1的一端设置有电池极片连接部4。As shown in Figures 1-4, a liquid-injectable tab for a lithium battery provided by an embodiment of the present invention includes a metal cylinder 1, a heat-sealed tube 2 is placed inside the metal cylinder 1, and the outer wall of the metal cylinder 1 A shell connection part 3 is provided on the top, and a battery pole piece connection part 4 is provided at one end of the metal cylinder 1 .
具体的，本实施例提供的可注液极耳与现有技术中极耳的主要不同之处在于其主体包括相互套接的金属筒1和热封管2，至于其壳体连接部3和电池极片连接部4，分别用于连接锂电池的壳体和电池极片，其相应结构均可参考现有技术中的相应结构。本实施例中，热封管2内套于金属筒1中，金属筒1作为可注液极耳的导电部分，其用于实现金属筒1的导电功能，金属筒1的材质可以是铝金属材质、镀镍铜金属材质或者现有技术中其它作为可注液极耳的材料，热封管2内套于金属筒1中，其用于加热后变形后封闭热封管2，其材质可以是塑料材质如聚丙烯塑料材质或者其它的可以用于热封的材料。本实施例提供的可注液极耳，制造时，金属筒1嵌于锂电池的壳体上，如此在锂电池的壳体内部形成一容纳腔，容纳腔与壳体外侧仅有金属筒1和热封管2内部的唯一连通通道，注液时，通过热封管2中的连通通道向容纳腔内注射电解液，注液完成后对壳体外侧的热封管2部分进行热封，保证电解液与空气隔绝，同时预充过程中的气体不会泄露。预充完成后，将热封区裁去，以进行除气工作，除气完成后，进行第二次热封。本实施例中，优选的，第一次热封在极耳上凸出于壳体外侧的部分，沿注液方向的裁剪宽度为0.5-2cm，第二次热封应保证整个极耳注液管全部热封。本实施例中，热封温度应控制在150-250℃范围内，保证极耳热封良好且不因温度过高而损坏铝塑膜。本实施例中，与现有技术不同的是，为了预留极耳的裁剪部分，极耳露出电池外的部分应该比传统极耳长0.5-2cm，保证预充后进行除气的步骤中，裁剪掉一部分极耳后，依然能够保证软包电池具备足够的极耳长度。Specifically, the main difference between the liquid-injectable tab provided in this embodiment and the tab in the prior art is that its main body includes a metal cylinder 1 and a heat-sealed tube 2 that are nested in each other. As for its shell connecting portion 3 and The battery pole piece connecting portion 4 is respectively used to connect the casing of the lithium battery and the battery pole piece, and its corresponding structure can refer to the corresponding structure in the prior art. In this embodiment, the heat-sealed tube 2 is set inside the metal cylinder 1, and the metal cylinder 1 is used as the conductive part of the lug that can be injected with liquid, which is used to realize the conductive function of the metal cylinder 1, and the material of the metal cylinder 1 can be aluminum metal Material, nickel-plated copper metal material or other materials in the prior art as liquid-injectable lugs, the heat-sealed tube 2 is sleeved in the metal cylinder 1, which is used to seal the heat-sealed tube 2 after deformation after heating, and its material can be It is plastic material such as polypropylene plastic material or other materials that can be used for heat sealing. The liquid-injectable tab provided in this embodiment, during manufacture, the metal cylinder 1 is embedded on the casing of the lithium battery, so that a housing chamber is formed inside the housing of the lithium battery, and only the metal cylinder 1 is present between the housing chamber and the outside of the housing and the only communication channel inside the heat-seal tube 2. When injecting liquid, inject electrolyte into the housing cavity through the communication channel in the heat-seal tube 2. After the liquid injection is completed, heat-seal the heat-seal tube 2 outside the shell. Ensure that the electrolyte is isolated from the air, and the gas during the pre-filling process will not leak. After the pre-filling is completed, the heat-sealing area is cut off for degassing, and after the degassing is completed, the second heat-sealing is performed. In this embodiment, preferably, the first heat sealing is performed on the part protruding from the outer side of the shell on the tab, and the cutting width along the liquid injection direction is 0.5-2 cm, and the second heat sealing should ensure that the entire tab is injected. The tubes are all heat sealed. In this embodiment, the heat-sealing temperature should be controlled within the range of 150-250° C. to ensure good heat-sealing of the tabs and not to damage the aluminum-plastic film due to excessive temperature. In this embodiment, different from the prior art, in order to reserve the cutting part of the tab, the part of the tab exposed outside the battery should be 0.5-2cm longer than the traditional tab, so as to ensure that in the step of degassing after precharging, After cutting off part of the tabs, it is still possible to ensure that the pouch battery has sufficient tab length.
本实用新型实施例提供的可注液极耳，通过热封管2向锂电池的内部注入电解液，注入电解液后通过热封管2进行热封，由于没有铝塑膜的刺破，如此一方面减少了注液的操作步骤，也减少了铝塑膜的额外耗费，从而降低了电池的制造成本；另一方面，整体的减少了成品电池的漏液风险和外观损伤的风险，能够提高电池的存储与使用寿命以及安全性能。The liquid-injectable tab provided by the embodiment of the utility model injects the electrolyte solution into the lithium battery through the heat-sealed tube 2, and heat-seals it through the heat-sealed tube 2 after injecting the electrolyte solution. Since there is no puncture of the aluminum-plastic film, so On the one hand, it reduces the operation steps of liquid injection, and also reduces the extra consumption of aluminum-plastic film, thereby reducing the manufacturing cost of the battery; on the other hand, it reduces the risk of liquid leakage and appearance damage of the finished battery as a whole, which can improve Battery storage and service life and safety performance.
本实施例中，优选的，金属筒1和热封管2过盈配合，过盈配合用于保证金属筒1和热封管2之间的密封性能，作为常规的替换方式，还可以通过其它的密封方式如密封胶连接金属筒1和热封管2，密封连接的作用有二，其一，避免污物从此处进入壳体内部，或者电解液从此处溢出，其二，保证热封后金属筒1和热封管2之间的密封性能。In this embodiment, preferably, the metal cylinder 1 and the heat-sealed tube 2 have an interference fit, and the interference fit is used to ensure the sealing performance between the metal cylinder 1 and the heat-sealed tube 2. As a conventional alternative, other For example, the sealant connects the metal cylinder 1 and the heat-sealed tube 2. The sealing connection has two functions. One is to prevent dirt from entering the shell from here, or the electrolyte overflows from here. The sealing performance between the metal cylinder 1 and the heat-sealed tube 2.
本实施例中，优选的，壳体连接部3为设置于金属筒1上的胶带，胶带制造方便且便于其与壳体连接。In this embodiment, preferably, the casing connecting portion 3 is an adhesive tape disposed on the metal cylinder 1 , the adhesive tape is easy to manufacture and facilitates its connection with the casing.
本实施例中，进一步的，还包括过渡件5，电池极片连接部4为金属平板，金属平板通过过渡件5连接于金属筒1上，金属平板难以稳固的连接于金属筒1上，过渡件5用于稳固的连接金属筒1和金属平板，过渡件5的两端分别用于稳固连接金属筒1和金属平板，如通过弧形件连接金属筒1的外壁，通过平板部分连接金属平板。更进一步的，过渡件5为弧形板件，弧形板件的中部连接于金属筒1上，金属平板的两端分别连接于弧形板件的两端，弧形件的中部能够较好的配合金属筒1的外壁，而其两端均可设置平板以连接金属平板，如此结构便于制造且也便于安装。In this embodiment, further, a transition piece 5 is also included. The battery pole piece connection part 4 is a metal plate, and the metal plate is connected to the metal cylinder 1 through the transition piece 5. It is difficult for the metal plate to be firmly connected to the metal cylinder 1. The transition The piece 5 is used to firmly connect the metal cylinder 1 and the metal plate, and the two ends of the transition piece 5 are respectively used to firmly connect the metal cylinder 1 and the metal plate, such as connecting the outer wall of the metal cylinder 1 through an arc, and connecting the metal plate through a flat part . Furthermore, the transition piece 5 is an arc-shaped plate, the middle of the arc-shaped plate is connected to the metal cylinder 1, and the two ends of the metal plate are respectively connected to the two ends of the arc-shaped plate, and the middle of the arc-shaped plate can be better The outer wall of the matching metal cylinder 1, and flat plates can be arranged at both ends to connect the metal flat plates, so that the structure is convenient to manufacture and easy to install.
本实施例中，进一步的，金属筒1和热封管的径向截面均为椭圆形，相比圆形，椭圆形的热封管2封口操作的变形幅度较小，从而提升其变形的稳固程度。再进一步的，椭圆形的长轴与短轴的比值不小于2，如此热封操作的变形幅度极小。In this embodiment, further, the radial cross-sections of the metal cylinder 1 and the heat-sealed tube are both elliptical. Compared with the circular shape, the deformation of the elliptical heat-sealed tube 2 during the sealing operation is smaller, thereby improving the stability of its deformation. degree. Still further, the ratio of the major axis to the minor axis of the ellipse is not less than 2, so that the deformation range of the heat-sealing operation is extremely small.
本实施例中，进一步的，电池极片连接部4的厚度和金属筒1的厚度均介于0.2mm-0.5mm之间，热封管2的厚度为0.05mm-0.2mm之间，如此厚度一方面保证金属筒1的强度，另一方面保证热封管2的变形能力和塑封能力。In this embodiment, further, the thickness of the battery pole piece connecting portion 4 and the thickness of the metal cylinder 1 are both between 0.2mm-0.5mm, and the thickness of the heat-sealed tube 2 is between 0.05mm-0.2mm. On the one hand, the strength of the metal cylinder 1 is guaranteed, and on the other hand, the deformation ability and plastic sealing ability of the heat-sealed tube 2 are guaranteed.
本实施例中，进一步的，金属平板的宽度与金属筒1的宽度相等，金属平板的宽度指的是弧形板件两端的距离，金属筒1的宽度指的是金属筒1的径向尺寸，对于椭圆形，指的是其长轴的长度，两者宽度相同使得极耳在锂电池内部占据的整体空间较为一致。In this embodiment, further, the width of the metal plate is equal to the width of the metal cylinder 1, the width of the metal plate refers to the distance between the two ends of the arc plate, and the width of the metal cylinder 1 refers to the radial dimension of the metal cylinder 1 , for the ellipse, it refers to the length of its major axis, and the width of the two is the same so that the overall space occupied by the tabs in the lithium battery is relatively consistent.
本实用新型实施例还提供一种锂电池，包括壳体和设置于壳体端部的电池极片，还包括上述的可注液极耳，金属筒1通过壳体连接部3连接于壳体内部，电池极片连接部4与电池极片相连接。The embodiment of the utility model also provides a lithium battery, which includes a case and a battery pole piece arranged at the end of the case, and also includes the above-mentioned liquid-injectable tab, and the metal cylinder 1 is connected to the case through the case connection part 3 Inside, the battery pole piece connection part 4 is connected with the battery pole piece.
由于上述可注液极耳具有上述技术效果，包含该可注液极耳的锂电池也应具有相应的技术效果。Since the above-mentioned liquid-injectable tab has the above-mentioned technical effect, the lithium battery including the liquid-injectable tab should also have the corresponding technical effect.
以上只通过说明的方式描述了本实用新型的某些示范性实施例，毋庸置疑，对于本领域的普通技术人员，在不偏离本实用新型的精神和范围的情况下，可以用各种不同的方式对所描述的实施例进行修正。因此，上述附图和描述在本质上是说明性的，不应理解为对本实用新型权利要求保护范围的限制。Some exemplary embodiments of the present utility model have been described above only by way of illustration. Needless to say, those skilled in the art can use various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109360933A (en) * | 2018-11-14 | 2019-02-19 | 桑顿新能源科技有限公司 | A kind of soft bag lithium ionic cell and preparation method thereof, application |
| CN110828905A (en) * | 2019-11-19 | 2020-02-21 | 东莞汇洋动力科技有限公司 | Method for manufacturing lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360933A (en) * | 2018-11-14 | 2019-02-19 | 桑顿新能源科技有限公司 | A kind of soft bag lithium ionic cell and preparation method thereof, application |
| CN110828905A (en) * | 2019-11-19 | 2020-02-21 | 东莞汇洋动力科技有限公司 | Method for manufacturing lithium ion battery |
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