工程机械动力锂离子电池-电芯循环寿命分析数据

在规定充放电制度、以及特定的循环次数下，锂离子电池-电芯的放电容量保持率、容量衰减情况在高倍率启动放电下电压性能以及对应参数的变化率，同时监控高倍率放电下的5秒电压和90秒电压，监控其对应参数的变化率，用于评估该类型电池在长时间循环放电情况下的启动能力，性能衰减情况、电池性能稳定性分析以及电池使用寿命预测。1.数据来源
在规定的循环寿命测试制度下，循环记录工程机械动力锂离子电池-电芯1000次的实时容量数据
2.数据处理
2.1实时预警
基于锂离子电池-电芯放电容量，容量保持率和电池高倍率放电得到的5秒电压和30秒电压的性能要求，通过设置监测阀值并实现智能预警，当循环至容量保持率<70%的标称容量时结束循环，或者当高倍率放电的5秒电压低于10V或者90秒电压低于7.2V时结束循环。
当测试结束时，若循环记录1000次中均没有预警，则放电容量取1000次的数据；若循环过程中有预警，则采用预警时的数据作为放电容量。
2.2性能衰减变化率
采用以下公式计算锂离子电池-电芯性能参数：
(1)放电容量保持率=放电容量/标称容量*100%;
(2)容量衰减率=（初始容量-终止容量）/初始容量*100%；
(3)容量变化率=(终止容量-放电容量)/终止容量；
3.数据应用
通过分析锂离子电池-电芯的放电容量保持率、容量衰减情况在高倍率启动放电下电压性能以及对应参数的变化率，用于评估该类型电池在长时间循环放电情况下的性能衰减情况、电池性能稳定性分析以及电池使用寿命预测。

This dataset focuses on the discharge capacity retention rate, capacity fading, voltage performance under high-rate startup discharge and the change rates of corresponding parameters of lithium-ion battery cells under specified charge-discharge protocols and specific cycle numbers. Meanwhile, it monitors the 5-second voltage and 90-second voltage during high-rate discharge and their corresponding parameter change rates, which is used to evaluate the startup capability, performance degradation, battery performance stability and remaining useful life prediction of this type of batteries under long-term cyclic discharge conditions.

1. Data Source
Under the specified cycle life test protocol, real-time capacity data of 1000 cycles of construction machinery power lithium-ion battery cells are cyclically recorded.

2. Data Processing
2.1 Real-time Early Warning
Based on the performance requirements of discharge capacity, capacity retention rate, 5-second voltage and 30-second voltage obtained from high-rate discharge of lithium-ion battery cells, monitoring thresholds are set to enable intelligent early warning. The test cycle will be terminated when the capacity retention rate drops below 70% of the nominal capacity, or when the 5-second voltage of high-rate discharge is lower than 10V or the 90-second voltage is lower than 7.2V.
At the end of the test, if no early warning occurs during the 1000 cycles, the discharge capacity will take the data of the 1000th cycle; if early warning occurs during the cycle, the data at the time of early warning will be used as the discharge capacity.

2.2 Performance Attenuation Change Rate
The following formulas are used to calculate the performance parameters of lithium-ion battery cells:
(1) Discharge capacity retention rate = (discharge capacity / nominal capacity) * 100%;
(2) Capacity fading rate = [(initial capacity - final capacity) / initial capacity] * 100%;
(3) Capacity change rate = (final capacity - discharge capacity) / final capacity;

3. Data Application
By analyzing the discharge capacity retention rate, capacity fading, voltage performance under high-rate startup discharge and the change rates of corresponding parameters of lithium-ion battery cells, this dataset is used to evaluate the performance degradation, battery performance stability and remaining useful life prediction of this type of batteries under long-term cyclic discharge conditions.

搜集汇总

数据集介绍

特点

该数据集提供了工程机械动力锂离子电池-电芯的循环寿命分析数据，包含2001条记录，涵盖电芯的实时容量、容量保持率、容量衰减率等关键参数，用于评估电池在长时间循环放电情况下的性能衰减和稳定性。数据更新按需进行，且已在浙江省知识产权区块链公共存证平台存证。