产品安全和预警(EC)

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1、Surpassing customers expectationAmperex Technology LimitedSurpassing customers expectationAmperex Technology Limited产品安全和预警产品安全和预警(18650)Version: 1stEditor PRJ: Deng YaoPingChecker PRJ: Wu QJChecker PROD: Liu JDate: 2009-5-16ATL ConfidentialSurpassing customers expectationAmperex Technology LimitedS

2、urpassing customers expectationAmperex Technology Limited2009 AIT 纪律宣讲敬禁静竞净Surpassing customers expectationAmperex Technology LimitedSurpassing customers expectationAmperex Technology Limited2009 AIT 学习大纲1) 目的2) 对象3) 范围4) 内容5) 研讨6) 考核Surpassing customers expectationAmperex Technology Limited2009 AIT

3、 学习目的1) 操作工人技术化2) 资格认证周期化3) 制造知识系统化4) 运作文件规范化Surpassing customers expectationAmperex Technology LimitedSurpassing customers expectationAmperex Technology Limited2009 AIT 学习范围主题主要内容预备资格学习目标时间分配项目过程关键知识点知识关联掌握/熟悉/了解学习时长所以然所以然其然其然基线基线目标目标2Surpassing customers expectationAmperex Technology Limited2009 A

4、IT 学习内容- 产品安全和预警主题主要内容预备资格学习目标时间分配项目过程关键知识点知识关联掌握/熟悉/了解学习时长(分钟)产品特性灰尘, 毛刺,温湿度电芯工作原理掌握制造安全的电芯60应用环境见PS电芯正确使用基本知识了解正确使用10制造环境见MI生产流程掌握制造关键控制点10失效模式Cycle 差,爆炸,电芯性能掌握10失效影响用电器不能工作电芯的功能掌握10预警流程磁铁吸附/化成sortingSPC基本知识掌握10教材内容包括但不限于以上所列。Surpassing customers expectationAmperex Technology LimitedContentWhats C

5、TQ Whats CTS How to control影响电芯安全的最大三要素 (除设计因素外) A.粉尘 B.毛刺 C.温湿度Surpassing customers expectationAmperex Technology LimitedContentWhats CTQ Critical to quality-品质关键点 capacity, imp, K-value, Cycle lifeHigh/Low TemperatureSurpassing customers expectationAmperex Technology LimitedContentWhats CTS Critic

6、al to safety-安全关键点 NailOverchargeOver dischargeExternal short High/RTHeatingSurpassing customers expectationAmperex Technology LimitedContentHow to controlpDesignpProcess (man, machine, material, method, measurement, environment)这里只介绍工序上如何控制Surpassing customers expectationAmperex Technology LimitedC

7、ell Profile钢壳电池属于压力容器，内有2030kg压力，属危险产品，危及消费者的人身或财产安全，为最大限度减少recall,占领更大的市场，如何对工序进行控制，降低风险。18650EC, 电芯直径:18.0mm, 电芯高度:65.0mm,属于Energy Cell, 阴极材料:锂镍钴锰, 阳极材料:FSNCSurpassing customers expectationAmperex Technology Limited Cell structureCathode正极Separator隔离膜Anode负极Core cell after winding卷绕后的裸电芯Head gaske

8、t头部绝缘垫Bottom gasket底部绝缘垫Cap盖帽Can after beading滚槽后钢壳Can钢壳钢壳电池Electrolyte电解液Center pin钢管Surpassing customers expectationAmperex Technology LimitedMaterial listSurpassing customers expectationAmperex Technology LimitedProcess Flowmixingcoatingslittingtab weldingwindinghi-potelectrolyte injection format

9、ionSurpassing customers expectationAmperex Technology LimitedMixingTank 钢内壁金属材料的磨损脱落 Impurity,筛网破损,锆铢进入浆料,使用“网格/磁铁/网格”过滤器来除铁,网格大小是浆料颗粒度的倍Fe Content , Cathode:120ppm, Anode:起支撑作用，防止电芯变形； 2电池内部产生大量气体时，center pin提供通道，便于气体疏散。Surpassing customers expectationAmperex Technology LimitedCan Beading拉伸不均匀,造成薄弱

10、区域, 易破损滚槽的目的:安装盖帽 滚槽需要控制： A镀层金脱落,真空吸或磁铁吸下高超下限,钢壳压阳极铜箔槽口波浪纹槽位破损Surpassing customers expectationAmperex Technology LimitedProblemsCan damage at BeadingSurpassing customers expectationAmperex Technology LimitedGrooving-DWG 滚槽深度：滚槽深度：目前通过测试内径来计算，它决定了封口时能否良好地支撑GasketSurpassing customers expectationAmpere

11、x Technology LimitedBaking 水气超标200PPM化成前为什么要对电芯进行高温baking 使电解液充分、均匀浸润 Surpassing customers expectationAmperex Technology LimitedInjection灌注量精度Surpassing customers expectationAmperex Technology LimitedCap assembly金属屑/变形18650的盖帽五组件:顶盖、vent（防爆片）、PTC(镍片)、CID、胶圈（gasket） PTC：正温度系数元件 PTC随温度的升高内阻迅速增大，可有效减小电

12、流，从而可避免电池温度急剧升高而燃烧Surpassing customers expectationAmperex Technology LimitedCID welding焊接虚焊TAB 长度过长，折TAB接触钢壳内壁焊锡飞溅Surpassing customers expectationAmperex Technology LimitedCrimping密封不严密封不严密封变形密封变形高度超规格高度超规格M6C工艺有没有degassing这道工序M6C中需要有一定的气体，在电池出现问题时可以有足够气体冲开vent使电池断路，保证电池的安全性。 Surpassing customers ex

13、pectationAmperex Technology LimitedCrimping一封一封40C二封二封40C三封三封30C分三步实现卷边封口Surpassing customers expectationAmperex Technology LimitedCross sectionnPoor crimping lead to VENT and CID deformationnGood Crimping VENT and CID no deformationSurpassing customers expectationAmperex Technology LimitedCleaningA

14、nti-rustSurpassing customers expectationAmperex Technology LimitedPlastic Sleeves Insertion高度超规格缩索不均匀、破损Surpassing customers expectationAmperex Technology LimitedBarcode Printing重码Surpassing customers expectationAmperex Technology LimitedX-Ray Inspection漏检Surpassing customers expectationAmperex Tech

15、nology LimitedFormationSurpassing customers expectationAmperex Technology Limited为什么要化成？电池制造后，通过一定的充放电方式将其内部正负极物质激活，改善电池的充放电性能及自放电、储存等综合性能的过程称为化成，电池只有经过化成后才能体现真实性能。Surpassing customers expectationAmperex Technology Limited什么是化成锂电芯的化成是电池的初使化,使电芯的活性物质激活，即是一个能量转换的过程。锂电芯的化成是一个非常复杂的过程，同时也是影响电池性能很重要的一道工序，

16、因为在Li+第一次充电时，Li+第一次插入到石墨中，会在电池内发生电化学反应, 在电池首次充电过程中不可避免地要在碳负极与电解液的相界面上、形成覆盖在碳电极表面的钝化薄层，人们称之为固体电解质相界面或称SEI膜(SOLID ELECTROLYTE INTERFACE）。SEI膜的形成一方面消耗了电池中有限的锂离子，这就需要使用更多的含锂正极极料来补偿初次充电过程中的锂消耗; 另一方面也增加了电极/电解液界面的电阻造成一定的电压滞后。Surpassing customers expectationAmperex Technology LimitedAgingSurpassing customer

17、s expectationAmperex Technology LimitedCapacity testSurpassing customers expectationAmperex Technology LimitedVoltage & Impedance Testing接触不好导致内阻大Surpassing customers expectationAmperex Technology LimitedGrouping混组Surpassing customers expectationAmperex Technology LimitedFinal Visual CheckingSurpassing customers expectationAmperex Technology LimitedF099 sampleSurpassing customers expectationAmperex Technology Limited学习研讨学习研讨