A device for improving the curling of one-sided polar plates of ultra-thin lithium ion batteries includes a main roller, an auxiliary roller, a polar feed tray and a polar discharging tray. The auxiliary rollers are sequentially attached to the right side of the main roller, and the auxiliary rollers are close to each other. The polar feed tray is placed on the upper edge of the main roller, and the polar discharging tray is placed on the lower side of the main roller and next to it. The lowest accessory roller. When in use, the rolled one-sided plate of the battery passes through the main roller and the curve path attached to the gap between the rolls. The roller is set at 100 120 (?) C for high temperature shaping. After shaping, the plate can be sequentially operated. The device carries out high temperature shaping treatment on the pole sheet, which can effectively release the stress of the pole sheet during rolling, reduce the tension difference between the positive and negative sides of the pole sheet, improve the boat-like performance of the pole sheet, avoid the internal short circuit failure of lithium-ion batteries in the use process, and reduce the potential safety hazards such as fire and explosion of lithium-ion batteries.
【技术实现步骤摘要】
一种改善超薄型锂离子电池单面极片卷曲的装置
本技术涉及锂离子电池
,尤其涉及一种改善超薄型锂离子电池单面极片卷曲的装置。
技术介绍
锂离子电池按照包装材料来分,可分为钢壳锂离子电池、铝壳锂离子电池和软包装锂离子电池。软包装锂离子电池具有能量密度高、重量轻、形态变化多、可做成超薄型电池等优点,超薄电池泛用于智能卡、IC卡、医疗器械、消费卡、身份证、信用卡以及各类会员卡、信息卡内置电源。目前超薄电池的厚度约为0.4-0.5mm,除去包装膜的厚度,极片及隔膜所占用厚度空间不足0.25mm,所以设计大多采用正负极各一片单面的结构工艺,而单面敷料的极片在辊压后,因为正反两面的延伸率不一,有敷料的面延伸较大,空箔面的延伸率较小,最终表现为极片呈舟状,不利于后工序的作业,而且易致电芯内部短路而失效,致使锂离子电池出现起火、爆炸等安全隐患。有鉴于此,有必要提供一种改善超薄型锂离子电池单面极片卷曲的装置以改善现有技术中存在的不足。
技术实现思路
本技术主是针对现有技术的不足,而提供一种改善超薄型锂离子电池单面极片卷曲的装置,利用此装置对极片进行高温整形处理,高温整理处理能有效释放碾压时极片的应力,减小极片正反两面的张力差,使得极片表面平整。为了实现以上目的,本技术采用以下技术方案:一种改善超薄型锂离子电池单面极片卷曲的装置,包括一个主体辊轮、4-8个附属辊轮、极片进料托盘和极片出料托盘,所述附属辊轮依次序贴于主体辊轮的右外侧,附属辊轮之间相互紧挨着;极片进料托盘置于主体辊轮的上缘,极片出料托盘置于主体辊轮的下侧并紧挨最下端的附属辊轮。所述主体辊轮和附属辊轮均具有加热功能, ...
【技术保护点】
1.一种改善超薄型锂离子电池单面极片卷曲的装置,其特征在于,该装置包括一个主体辊轮、4‑8个附属辊轮、极片进料托盘和极片出料托盘,所述附属辊轮依次序贴于主体辊轮的右外侧,附属辊轮之间相互紧挨着;极片进料托盘置于主体辊轮的上缘,极片出料托盘置于主体辊轮的下侧并紧挨最下端的附属辊轮。
【技术特征摘要】
1.一种改善超薄型锂离子电池单面极片卷曲的装置,其特征在于,该装置包括一个主体辊轮、4-8个附属辊轮、极片进料托盘和极片出料托盘,所述附属辊轮依次序贴于主体辊轮的右外侧,附属辊轮之间相互紧挨着;极片进料托盘置于主体辊轮的上缘,极片出料托盘置于主体辊轮的下侧并紧挨最下端的附属辊轮。2.根据权利要求1...
【专利技术属性】
技术研发人员:胡李,李国敏,
申请(专利权)人:深圳格林德能源集团有限公司,
类型:新型
国别省市:广东,44
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