中文摘要：

开发了一种蓄电池内压测试仪,集成了高性能的压力传感器和蓄电池相配套的传感器封装结构及压力采集与数据存取的软硬件。该测试仪既适用于以水溶液为电解质的蓄电池的内压测量,也可用于以有机溶液为电解质的锂离子电池。由于其精度高,可定量检测电池内部气体的压力,操作简便、响应速度快,可实现电池内压的在线测量及数据储存。用该仪器测试了D型氢镍电池的稳定内压,结果表明,稳定内压与电池的荷电状态呈线性关系;研究了Li4Ti5O12/LiCoO2及Li4Ti5O12/LiMn2O418650型锂离子电池活化及随后充放电过程的内压变化,定量描述了钛酸锂电池的气胀行为。

英文摘要：

A battery internal pressure tester with high performance pressure sensors,matching package structure and data collecting and storing software and hardware has been developed.This system is applicable to batteries with either aqueous or organic electrolyte. With high precision,it can determine battery internal pressure quantitatively . Meanwhile,it is simple to handle and responds quickly,which makes it possible for in situ measurement of a battery’s internal pressure.In the test of a nickel metalhyoride（MH-Ni）batteries,results show that there is a linear relationship between stable internal pressure and state of charge.Li4 Ti5 O1 2/LiCoO2 and Li4 Ti5 O1 2/LiMn2 O4 18650 type batteries have also been investigated,and a quantitative description of the gassing behavior has been given.