动力锂离子电池现状、安全性及寿命评测

动力锂离子电池现状、安全性及寿命1

评测内容清华大学核研院锂离子电池实验室介绍动力电池现状锂离子动力电池的安全性锂离子动力电池的使用寿命The

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Tsinghuaww力电ge池研•安全性的概念滥用安全性

abuse

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Universityww力电ge池研现场（随机）安全性1腾会车动务w.top-讨会event.com两种安全性概念的差异Institute

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University20ww力电ge池研现场安全性滥用安全性Predictable可预测的

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to

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cells对每一个电池Can/should

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cell

level可以通过测试进行评估

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constants

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be

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devices可以通过保护措施进行改善Not

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shutdownseparators,electroniccontrols

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are

effective目前所有的安全性措施，均不

能完全消除锂离子电池安全

隐患1腾会车动务w.top-讨会event.com20会车动ww力电ge池研top-讨会发生安全事故的锂离子电池，之前均通过UL安全认证。even对于笔记本电脑电池，发生概率在几百万分之一。发生原因基本上是不可预测的内短路所造成。而这种内 路似乎是不能完全消除。引起安全事故的电池在制造时，均是合格品。目前滥用安全性标准的测试结果，与发或者不发生安全性 事故，之间没有任何联系。Institute

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effort

has

been

payed

to

improve

the

waywws力w电ege池研在人们如此重视锂离子电池安全性的今天，严重的安全性问 题还时有发生。The

battery

community

does

not

have

adequate

teststo

evaluate

safety

as

it

relates

to

the

safety

incidthat

have

taken

place

or

could

take

place.人们还没有找到合适的方法来预测和评测这类安全隐患问题我们在做工作，希望“十二五”结束时，这个问题得到一定程 度的解决。Institute

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safety

incidents

can

always

occur.t.务w.address

safety

in

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Released

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会1Institute

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Universityge池研隔膜201腾会车动务影响电池安全性的重要指标Shutdown

performance隔膜关闭的温度范围Strength

and

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integrity抗压机械强度Shrinkage

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Universityww力电ge池研凝胶电解质凝胶电解质的放热量与放热速率P(VdF-HFP)凝胶电解质在. m

o

c燃烧过程中的放热总量非接近于纯液态电解液体系并且随着P(VdF-HFP)在凝胶电解质中浓度的增加，相应的热释放速率逐渐降。采用P(VdF-HFP)凝胶电解质比液态电解液更为安PMMA凝胶电解质体系中，情况却是相反:其燃烧反应放热总量和热释放速率都PMMA的加入而显著增大。黄倩，厦门大学博士论文1腾会车动务w.top-讨会event20Institute

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Universityww力电ge池研锂离子电池的安全性是一个复杂的系统问题动力电池安全性是一个系统问题。从单纯的电池材料改性（正极、负极、电解质、隔膜…）是不能完全解决安全性问题，但可以大幅度地提高。1腾会车动务w.top-讨会event.comww力电Institute

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AlPO4过充电前过充电后自制安全性手机电池过充电试验未燃烧、未爆炸。过充电市售品牌电池电芯Institute

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University20ww力电ge池研充电到4.15V，加热到120℃，发生剧烈燃烧1腾会车动务w.top-讨会event.com会车动ww力电ge池研动力电池的使用寿命与成本如何评测动力电池的使用寿命现场检测电池的寿命状态（SOH）Institute

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University务锂离子动力电池的使用寿20

命top-讨会evenw.t.com20力Also

need

to

consider

combination

of

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and

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yrs

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池20

160%$663.c动力电池的使用寿命20ww力电ge池研

电池的成本占整个电动车成本的25~60%。是一个非常重要的零部件。车的使用寿命：10-15年动力电池目前的使用寿命是3-7年，LG化学声称可 以有10-15年的寿命保证。因此大幅度地延长动力锂离子电池的使用寿