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1、3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,1,电池失效分析,Dec.2008,Tianjin Lishen Battery Joint-stock Co.,Ltd,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,2,目录一:8D分析方法二:锂离子电池常见失效模式
2、三:关键控制参数四:失效模式分析五:与安全相关的要求,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,3,一:8D分析方法,1.主题-Concern Title小组建立-Team Cross function问题描述-Problem description Whats wrong with what?4.临时措施-Containment action Emergency response action to protect cus
3、tomer措施验证-Verification of containment action prove your containment action is effective.6.原因分析-Root cause analysis 3why Fishbone重现性实验-simulation testing to recur the defects改善措施-Permanent Corrective Action 改善效果验证-Verification of Corrective Action Effectiveness 10.防止再次发生-Actions Taken to Prevent Recu
4、rrence Document(Dfmea/Pfmea CP WI)11.庆祝-Congratulation,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,4,二.锂离子电池常见失效模式,电池失效,电压低,内阻大,容量低,安全,漏液,其他,循环差,鼓胀(方/聚),自放电负载漏电流短路充电不足-,焊接导电剂接触(腐蚀)电液-,涂敷量温度电阻-,过充短路过热挤压-,焊接注液孔密封件-,焊接注液孔密封件-,受热气胀循环-,电液电极温度
5、循环条件-,-,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,5,三:关键控制参数,粉浆,材料,配比,黏度,固含量,除铁,涂敷,涂敷量,颗粒度,速度,温度,间隔,长度,对齐度,涂敷突起,基体,碾压,碾压密度,平整度,厚度,反弹率,剪切,毛刺,收卷对齐度,宽度,电极制造:,Lamination:覆盖涂敷宽度,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety Confiden
6、tialAttorney Client Privileged Communication,6,三:关键控制参数,极片烘干,温度,气压,时间,极片反弹,极耳焊接,焊接拉力,极耳胶带,卷绕,对齐度,毛刺,张力,粉尘,极片插入/收尾位置,掉粉,极组卷绕:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,7,三:关键控制参数,压极组,压力,温度,时间,均一性,极组厚度,异物,包胶带,胶带长度,胶带性能,入壳,极组入壳比,入壳挫伤,极耳焊接
7、,拉力,位置,虚焊,异物,装配工序:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,8,三:关键控制参数,弯极耳,间距,角度,形状,扣盖,极耳变形,上垫片挤压,离心入壳,极耳变形,角度,周边焊接,隔膜烫伤,焊接强度,焊接裂缝,异物,装配工序:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged C
8、ommunication,9,三:关键控制参数,烘极组,时间,温度,气压,水份含量,隔膜状态,注液,温度,湿度,注液量,静置时间,预化成,电流,电压,时间,封球,球径,压力,球材质,装配工序:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,10,三:关键控制参数,化成,电流,电压,时间,老化,温度,静置时间,后处理,筛选电压,电流,电压,温度,设备精度,分选,短路,厚度,富裕量(Margin),化成/后处理工序:,3/7/202
9、3,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,11,三:关键控制参数,焊接,电流,时间,夹具,PTC,关断温度,结构强度,PCM,性能,焊接,触点,注塑,温度,溢胶,少胶,Pack:,贴纸,外观,水贴纸,安全阀变形,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,12,四:失效模
10、式分析,低电压:1.自放电 2.负载放电 3.充电不足 4.接触不良可能的原因:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,13,四:失效模式分析,高内阻:1.焊接不良 2.过放电 3.外短路(受热)4.接触不良可能的原因:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communic
11、ation,14,四:失效模式分析,安全 1.内短路 2.过充电 3.热冲击 4.充电时接电话可能的原因:,3/7/2023,Lishen Battery Joint-Stock Co.,Ltd.Propriety ConfidentialAttorney Client Privileged Communication,15,五:与安全相关的要求,安全 安全规则更新,基于对安全的了解深入，我们对电池的安全设计准则进行了更新,主要突出了以下几点:1.电极以单面涂敷量进行控制(真实的N/P比)2.电液水份的控制，特别是注液后水份的规格 3.铝箔与负极活性物质之间的绝缘要求 4.毛刺规格 5.安全阀的有效性 6.对新的行业标准的符合性,CathodeSepAnode,
