聚焦磷酸铁锂电池

文中介绍了磷酸铁锂电池的结构、工作原理及其主要性能,与铅酸电池相比较,列举了磷酸铁锂电池的七大优势,简单介绍了磷酸铁锂电池的安装注意事项、维护、管理,最后举例说明了磷酸铗锂电池在电动汽车和通信行业中的应用。     

蓄电池组智能维护仪的设计及实现

在通信备用电源系统的维护中,对蓄电池组的维护管理占据非常重要的位置。讲述了采用微控制器AT89S52进行蓄电池组智能维护仪的设计和实现方法。首先讲解了系统总体框架结构的设计方法,然后重点阐述了主控制板块功能的实现过程。实践证明,该蓄电池组智能维护仪使用方便、性能可靠。     

某锂电池生产厂房低湿空调系统设计

对锂电池生产工艺流程进行简要介绍,对锂电池产品生产工艺及环境要求进行分析研究,分析水分对锂电池性能的影响以及保证低湿环境的重要性。简要介绍了锂电池生产厂房低湿空调系统的设计流程。     

锂电池自动贴胶机的PLC控制系统设计

介绍了锂电池自动贴胶机的工作原理,设计了以CPIH系列PLC为基础的锂电池自动贴胶机控制系统,重点介绍了控制系统的工作原理、硬件配置、软件设计和故障排除及其维护。该系统已通过实际生产的应用得以验证,积累了宝贵的经验,在教学方面具有较好的应用价值。     

磷酸铁锂电池通用充电模块简介

1 锂电池应用概况 近年来,便携式电子产品正向轻量化、超小型化发展,为此锂离子电池得到广泛应用,但是目前大量应用的正极材料为钴酸锂和锰酸锂的锂离子电池安全性能较差.多年来,手机锂电池、笔记本锂电池组、移动DVD用锂电池和矿灯用锂电池等不断出现燃烧和爆炸等现象,造成极大的经济损失和极坏的社会影响.为了消除这种现象,便携式电子设备已开始采用安全性能极好的磷酸铁锂电池.     

基于磷酸铁锂电池的无机房基站后备电源应用分析

通过分析磷酸铁锂电池的高倍率放电、高能量密度、循环性能高、可快速充电、成本低等特点,阐述了铁锂电池应用于无机房建设的优越性.     

基于温度自适应控制的太阳能电源管理系统

摘要：本设计基于LTC4121实现锂电池的充电管理,并结合放电管理电路和温度控制电路实现了一整套针对锂电池的太阳能电源管理系统。通过试验研究的方法对该系统充放电电路的充放电性能、温度自适应功能进行验证。研究结果表明：所研究的温度自适应控制的太阳能电源管理系统具有良好的充放电性能、充电效率达80%以上,可实现低温环境下对锂电池的充放电管理,具有较高的工程应用价值。     

漫谈锂电池

Li电池作为新一代的可充电电源被广泛应用到各类移动设备中,随着锂电池工艺的成熟和多样化,其应用也越来越广泛,目前在很多领域已经逐渐替代传统镍镉、镍氢可充电电池。小型电脑数码设备比如笔记本电脑、掌上电脑、数码相机、移动电话手机等产品就早已全面使用锂电池。我们HAM最关心的对讲机电池近年来也开始全面转向锂电池。在动力电池方面,由于新型锂电池开始崭露头角,一些电动车也开始由传统电瓶向锂电池转型。我们无线电爱好者都希望能够正确使用和维护电池,使电池达到最长循环寿命和最佳使用效果。可充电锂电池作为一种新型可充电电池,其特性与传统的可充电镍镉、镍氢电池有很大的不同,所以锂电池的充电和维护要求与镍镉、镍氢电池也有很大不同,以前很多镍镉、镍氢电池维护经验并不适合锂电池。     

基于ASC8511的电源管理系统

摘要：锂电池已成为便携式设备的首选电源,电源管理系统的性能影响到便携式设备是否能够可靠地工作。本文对锂电池充电管理芯片ASC8511的性能进行了详细的测试,设计了基于ASC8511的电源管理系统,该系统可选择电源适配器、USB接口、太阳能电池板供电,智能选择恒流充电电流,可配置系统输出电压为多种便携式设备供电。     

磷酸铁锂电池在川西高原基站场景的应用探讨

本文根据高原基站特殊的高海拔及严寒温度场景对磷酸铁锂电池及电池管理系统的特性影响,从高原基站磷酸铁锂电池的配置优化、管理优化两个方面进行探讨,提出了适合高原基站应用场景的磷酸铁锂电池配置和计算方法、常见问题的解决方法,为高海拔基站磷酸铁锂电池的建设维护提供参考。     

Interacting multiple model particle filter for prognostics of lithium-ion batteries

We propose a new data-driven prognostic method based on the interacting multiple model particle filter (IMMPF) for determining the remaining useful life (RUL) of lithium-ion (Li-ion) batteries and the probability distribution function (PDF) of the associated uncertainty. The method applies the IMMPF to different state equations. Modeling the battery capacity degradation is very important for predicting the RUL of Li-ion batteries. In this study, improvements are made on various Li-ion battery capacity models (i.e., polynomial, exponential, and Verhulst models). Further, three different one-step state transition equations are developed, and the IMMPF method is applied to estimate the RUL of Li-ion batteries with the use of the three improved models. The PDF of the predicted RUL is obtained by combining the PDFs obtained with each individual model. We conduct four case studies to validate the proposed method. The results are as follows: (1) the three improved models require fewer parameters than the original models, (2) the proposed prognostic method shows stable and high prediction accuracy, and (3) the proposed method narrows the uncertainty PDF of the predicted RUL of Li-ion batteries.     

The great battery search [electric vehicles]

Batteries are the Achilles' heel of electric vehicles (EVs). Advocates of EVs frequently find themselves explaining why no electric car can drive far without refueling and as frequently promising things will get better any year now, as soon as the latest advance in batteries reaches maturity. As the search goes on for new electrochemical couples, designers try to avoid the pitfalls of the old ones. The article discusses the problems of batteries for EVs and discusses Li-ion, Ni-MH and Ni-Cd battery developments. The possibility of using primary batteries is briefly discussed as are battery charging technologies, safety and health issues     

手持式气象传感器现场测量仪的开发

目前,我国主流自动气象站主要有CAWS600系列、ZQZ-F、DZZ2、Milos500、DYYZ等。野外现场对传感器工作状态的快速判断直接影响气象站的维护效率。气象传感器输出的电信号类型多,包括电压、电流、格雷码、脉冲、电阻等。针对目前气象传感器测量仪器的不足,提出一种手持式气象传感器测量仪,采用便携式结构,锂电池供电,低功耗处理器作为主控,结合CPLD和信号调理电路,能同时实现温度、湿度、风速、风向、雨量、辐射、蒸发、气压等气象传感器的输出测量。根据现场气象条件和测量结果,完成对传感器工作状态的判断。为气象装备保障人员赴野外现场维护和检修提供一种仪器手段。     

基于AT89S52的镍镉充电电池智能管理系统设计

镍镉充电电池作为一种碱性电池,对使用、管理和维护有特殊要求,如果管理不善、使用不当、维护不及时,很容易导致电池老化、失效甚至报废。针对部队、厂矿大量使用并集中存放的不同种类镍镉充电电池,运用单片微型计算机控制技术,设计了电池智能管理系统,对镍镉充电电池进行状态自动检测、充放电管理、性能维护等智能化管理。通过对镍镉充电电池的自动管理,有效消除镍镉充电电池使用管理上的盲目性和随意性,提高镍镉充电电池的使用效能,延长镍镉充电电池的使用寿命。     

μP控制的Si9731型电池充电器的原理及应用

Si9731是一种可对1节锂离子电池或1-3节镍镉／镍氢电池进行脉冲充电的电池充电器IC。其电池充电系统处理器的直接控制下完成。文中介绍Si9731的主要特点、内部结构、引脚功能和工作原理，并给出Si9731的设计要点。     

Battery Management System Based on Battery Nonlinear Dynamics Modeling

This paper presents a method of determining electromotive force and battery internal resistance as time functions, which are depicted as functions of state of charge (SOC) because . The model is based on battery discharge and charge characteristics under different constant currents that are tested by a laboratory experiment. This paper further presents the method of determining the battery SOC according to a battery modeling result. The influence of temperature on battery performance is analyzed according to laboratory-tested data, and the theoretical background for calculating the SOC is obtained. The algorithm of battery SOC indication is depicted in detail. The algorithm of the battery SOC ldquoonlinerdquo indication considering the influence of temperature can be easily used in practice by a microprocessor. An NiMH battery is used in this paper to depict the modeling method. In fact, the method can also be used for different types of contemporary batteries, as well as Li-ion batteries, if the required test data are available.     

电动汽车锂电池SOC估测

SOC的估算对电动汽车锂电池的管理至关重要.该文提出了一种改进的安时积分法,在传统安时积分的基础上考虑温度对电池充放电的影响,及静置时间对SOC初值的影响,及时对SOC的初值进行修正,避免了传统安时积分法对误差的累积.以磷酸铁锂电池为例搭建实验平台,得到计算所需参数,并且验证了设计思路的可行性.     

Electric Vehicle Using a Combination of Ultracapacitors and ZEBRA Battery

The sodium–nickel chloride battery, commonly known as ZEBRA, has been used for an experimental electric vehicle (EV). These batteries are cheaper than Li-ion cells and have a comparable specific energy (in watt–hours per kilogram), but one important limitation is their poor specific power (in watts per kilogram). The main objective of this paper is to demonstrate experimentally that the combination of ZEBRA batteries and ultracapacitors (UCAPs) can solve the lack of specific power, allowing an excellent performance in both acceleration and regenerative braking in an EV. The UCAP system was connected to the ZEBRA battery and to the traction inverter through a buck–boost-type dc–dc converter, which manages the energy flow with the help of DSP controllers. The vehicle uses a brushless dc motor with a nominal power of 32 kW and a peak power of 53 kW. The control system measures and stores the following parameters: battery voltage, car speed to adjust the energy stored in the UCAPs, instantaneous currents in both terminals (battery and UCAPs), and present voltage of the UCAP. The increase in range with UCAPs results in more than 16% in city tests, where the application of this type of vehicle is being oriented. The results also show that this alternative is cheaper than Li-ion powered electric cars.      

地铁通信阀控式铅酸蓄电池的维护与性能评估

阐述了从地铁建设到运营期间针对阀控式密封铅酸蓄电池需要注意的问题,总结了在使用过程中常见的故障,介绍了其日常维护措施与年度保养内容。同时,针对阀控式密封铅酸蓄电池的渐变失效现象,提出性能预判评估的方法,以及单个蓄电池或蓄电池组更换的参考标准。