常用的锂动力电池循环寿命预测模型由于忽略了电化学反应引起的结构变化而 导致锂动力电池寿命预测出现错误． 为此，以磷酸铁锂动力电池为对象，研究了锂动力电 池内部结构形态与锂动力电池循环寿命之间的关系，提出了基于形态与性能的动力电池 循环寿命预测方法，建立了基于形态与性能的动力电池循环寿命预测模型( BLPC 模型) ， 研发了对应的动力电池循环寿命检测系统( BLPC 系统) ，并以此对磷酸铁锂电池进行了 循环寿命实验和 BLPC 模型的验证分析． 结果表明，与常用的电池循环寿命预测方法相 比，该预测方法具有可行与实用的特点． 

The conventional prediction model for cycle life of lithium power batteries may generate prediction error， because it ignores the impact of the structural changes caused by electrochemical reactions． To solve this problem， the lithium iron phosphate batteries are regarded as the research objects for the study of the relationship between the internal structure and the cycle life of lithium power battery． The prediction method based on morphology and electrochemical properties is proposed． And a prediction model for cycle life of power battery ( BLPC model) is established on the basis of the morphology and electrochemical properties． The corresponding power battery cycle life test system ( BLPC system) is designed to carry out the cycle life experiment of the lithium iron phosphate batteries and verify the validity of BLPC model． The experimental results show that the new prediction method is more reliable and practical than those conventional ones．