蓄电池在线监测系统的相关问题探讨

本文对蓄电池在线监测系统的相关问题进行了探讨,首先对蓄电池在线监测系统进行了基本概述,接着就蓄电池在线监测系统的意义、功能以及实现三个方面的内容进行了详细的探讨。     

基于三阶段在线除硫养护技术的电力蓄电池智能在线维护系统

本论文阐述了基于三阶段在线除硫养护技术的电力蓄电池智能在线维护系统的功能、特点及组成结构,并对其总体构架、实现原理进行了描述,其中着重描述了基于三阶段在线除硫养护技术的蓄电池在线养护功能的实现原理和方法。该系统不仅可提升在网蓄电池的供电能力,而且能延长蓄电池的使用寿命,节约蓄电池的运行维护成本,具有显著的节能减排效益,为蓄电池的运行维护管理提供了全新的思路和方法。     

[东帆科技]蓄电池在线监测装置方案提升机房电池安全等级

东帆科技PBM S6000 Pro蓄电池在线监测装置方案,高效地解决了大型机房蓄电池传统维护方式遭遇的各种难题,大大地提升了机房电池安全等级。东帆科技蓄电池在线监测装置方案特点分布式在线监测PBMS6000PRO采用“一拖一”分布式架构,在线监测蓄电池各类运行和性能参数。     

UPS蓄电池在线监测系统的设计

蓄电池是UPS系统的重要组成部分,对蓄电池进行在线监测,及时掌握蓄电池的健康状态,对提高UPS系统的可靠性具有重要意义。本文设计了一种基于ARM的蓄电池在线监测系统。该系统可在线监测蓄电池的电压、电流,同时通过CAN总线将监测到的量传输到上位机,选用二阶RC等效电路作为蓄电池的模型,利用最小二乘法辨识模型参数并根据开路电压与SOC的关系估计出蓄电池的荷电状态（SOC）。通过上位机软件可以直观的显示蓄电池的健康状态,及时发现失效电池,延长蓄电池的使用寿命,保证UPS系统的安全运行。     

基于模糊逻辑的变电站蓄电池在线健康状态评估

为了保证变电站直流电源设备运行的安全可靠性,提高铅酸蓄电池健康状态(State of Health,SOH)的评估能力至关重要。提出了一种基于模糊逻辑预测SOH的在线检测法,利用蓄电池在充放电状态下电荷量与开路电压之间的线性关系分别在线、离线检测蓄电池的SOH。实验结果表明,传统的离线法与在线法评估的结果一致,误差均接近2%左右。与SOC在线检测方法相比,SOH对蓄电池健康评估具有灵敏度高、收敛快等特点。     

VRLA蓄电池在线监测技术综述

随着铅酸蓄电池的广泛应用,人们对其运行的安全性、可靠性提出了更高的要求。同时,蓄电池在线监测技术也得到了迅猛发展。文章简单介绍了阀控式铅酸（VRLA）蓄电池在线监测及剩余容量（SOC）在线预测的几种方法,并进行了对比分析,提出了较为有效的监测方法。     

车船蓄电池在线管理系统的构建

蓄电池作为电动车船电能系统的直接电源,其维护工作对保证能源系统的安全运行具有十分重要的意义。实时监测蓄电池,及时发现失效单体电池,是蓄电池维护工作的重中之重,而目前电动车船蓄电池大多采用人工检测,工效很低。本文就车船蓄电池在线管理系统构建的格局、机理和特色等三大方面展开论述,旨在实现蓄电池在线监测功能的易用性和精准性,提高电池工作效率,减低运营成本。     

车船蓄电池在线管理系统的构建

蓄电池作为电动车船电能系统的直接电源,其维护工作对保证能源系统的安全运行具有十分重要的意义.实时监测蓄电池,及时发现失效单体电池,是蓄电池维护工作的重中之重,而目前电动车船蓄电池大多采用人工检测,工效很低.本文就车船蓄电池在线管理系统构建的格局、机理和特色等三大方面展开论述,旨在实现蓄电池在线监测功能的易用性和精准性,...     

基于AD630实现蓄电池内阻在线测量

针对目前蓄电池内阻在线测量存在的不足,设计实现了一套实用的蓄电池内阻在线测量系统。该系统运用四引线连接法,将一定频率的交流信号注入电池,再将电池两端产生的微弱信号通过前置放大滤波,送入AD630进行相关检测,有效地抑制了噪声和干扰,简化了设计,实现了蓄电池内阻的在线测量。实验结果表明,该系统可有效地应用于蓄电池内阻的在线测量,且测量结果稳定可靠。     

轨交蓄电池的智能运维管理系统设计

阐述一种蓄电池在线监控系统的设计,提出核心理念、系统架构,探讨蓄电池管理模块、蓄电池采集模块、蓄电池组电流采集模块、系统参数指标、专家分析告警系统,以及软件功能。     

基于ARM电池检测管理系统的设计与实现

针对电池组进行充放电时,电池组内每个电池存在荷电状态(SOC)值不一致的问题,设计并实现了电池检测管理系统.提出了基于开路电压法、安时计量法以及卡尔曼滤波算法相结合的SOC值估计方法,通过飞渡电容实现每个电池之间能量的转移,最终使每个电池的SOC值趋向于一致.测试和实验结果表明,电池组进行充放电时,电池检测管理系统能够有效地解决每个电池SOC值不一致的问题,大大地提升了电池的使用寿命和使用效率.     

独立光伏系统的储能技术研究

储能环节是独立光伏系统的重要组成部分,其优劣直接影响到光伏系统的好坏。文章简要介绍了独立光伏发电系统、储能技术的特殊要求,分析比较了各种储能技术的基本原理、技术特点、发展现状和储能技术在光伏系统中的适用性。     

Energy-aware routing in sensor networks: A large system approach

In many sensor networking environments, the sensor nodes have limited battery capacity and processing power. Hence, it is imperative to develop solutions that are energy-efficient and computationally simple. In this work, we present a simple static multi-path routing approach that is optimal in the large-system limit. In a network with energy replenishment, the largeness comes into play because the energy claimed by each packet is small compared to the battery capacity. This static routing scheme exploits the knowledge of the traffic patterns and energy replenishment statistics, but does not need to collect instantaneous information on node energy. We also develop a distributed solution of the optimal policy, as well as heuristics to build the set of pre-computed paths. The simulations verify that the static scheme outperforms leading dynamic routing algorithms in the literature, and is close to the optimal solution when the energy claimed by each packet is relatively small compared to the battery capacity.     

一种锂电池组无损均衡管理系统设计

针对动力锂电池组充放电过程中,各单体电池之间存在的不一致性,设计了超级电容与双向DC-DC变流器相结合的无损均衡管理系统。采用无迹卡尔曼滤波法估算锂电池的荷电状态,与通常采用的扩展卡尔曼滤波器进行了对比研究,经实验验证,本系统能够快速、高效地实现锂电池组的均衡控制,实现精确地锂电池SOC(State of Charge)估计,提高了动力锂电池组的可靠性和安全性。     

便携式可充电多路输出电源设计

针对锂电池输出电压以及使用周期的局限性问题,设计了基于升压稳压芯片MC33063、降压稳压芯片TPS62046和锂电池充电管理芯片CN3065的便携式可充电多路输出电源。给出了整个设计系统框图及硬件电路,在多种不同电源供电系统、能源转换效率、便携以及清洁能源利用等方面做了探索。试验证明该多路输出电源运转正常、转换效率较高、充电性能优越,能用于多种常用设备的供电,能快速地与多种便携设备进行对接供电,是未来便携式电源发展的主要方向。     

Ambient RF energy harvesting system: a review on integrated circuit design

This paper presents a comprehensive review of ambient RF energy harvester circuitry working on integrated circuits. The review covers 3 main blocks in an RF energy harvesting system implemented on chip. The blocks are the rectifier, impedance matching circuit and power management unit. The review of each block includes its operational principle, reported state-of-the-art circuit enhancement techniques, and design trade-offs. We compare the circuits in each block with respect to the techniques adopted to improve the performances for RF energy harvesting. To identify the benefits and limitations associated with the architecture we discuss the advantages and disadvantages of the circuit topologies in each block of an ambient RF energy harvester.     

Efficient flow‐control algorithm cooperating with energy allocation scheme for solar‐powered WSNs

Recently, solar energy emerged as a feasible supplement to battery power for wireless sensor networks (WSNs) which are expected to operate for long periods. Since solar energy can be harvested periodically and permanently, solar‐powered WSNs can use the energy more efficiently for various network‐wide performances than traditional battery‐based WSNs of which aim is mostly to minimize the energy consumption for extending the network lifetime. However, using solar power in WSNs requires a different energy management from battery‐based WSNs since solar power is a highly varying energy supply. Therefore, firstly we describe a time‐slot‐based energy allocation scheme to use the solar energy optimally, based on expectation model for harvested solar energy. Then, we propose a flow‐control algorithm to maximize the amount of data collected by the network, which cooperates with our energy allocation scheme. Our algorithms run on each node in a distributed manner using only local information of its neighbors, which is a suitable approach for scalable WSNs. We implement indoor and outdoor testbeds of solar‐powered WSN and demonstrate the efficiency of our approaches on them. Copyright © 2010 John Wiley & Sons, Ltd.     

面向蓄电池的多输入源低功耗充电电路设计

针对蓄电池的储能问题,提出了一种多输入源且可扩充的高效充电电路和相应的控制算法。该充电电路主要由数字控制单元（DCU）、比较器、基于Dickson电荷泵结构的时钟倍压器（CVD）以及模拟开关组成,可以对多个独立能量采集器（EH）进行电能收集。该系统支持通过热插拔方式扩充任意数量的EH。提出的控制算法可以将从各个EH采集到的能量传递到能量储存装置而不会互相干扰。采用0.18 μm CMOS工艺对提出电路进行了具体实现。实验结果显示,相比类似的蓄电池充电系统,该充电电路的功耗最低,只需1.72μW的功耗,能够为三个输入源提供高达96.1%的最大充电效率。     

Voltage equaliser for Li–Fe battery

In this article, a voltage equaliser is proposed for a battery string with four Li–Fe batteries. The proposed voltage equaliser is developed from a flyback converter, which comprises a transformer, a power electronic switch and a resonant clamped circuit. The transformer contains a primary winding and four secondary windings with the same number of turns connected to each battery. The resonant clamped circuit is for recycling the energy of leakage inductance of the transformer and for performing zero-voltage switching (ZVS) of the power electronic switch. When the power electronic switch is switched on, the energy is stored in the transformer; and when the power electronic switch is switched off, the energy stored in the transformer will automatically charge the battery whose voltage is the lowest. In this way, the voltage of individual batteries in the battery string is balanced. The salient features of the proposed voltage equaliser are that only one switch is used, the energy stored in the leakage inductance of the transformer can be recycled and ZVS is obtained. A prototype is developed and tested to verify the performance of the proposed voltage equaliser. The experimental results show that the proposed voltage equaliser achieves the expected performance.     

Intelligent control battery equalization for series connected lithium-ion battery strings

An intelligent battery equalization scheme based on fuzzy logic control is presented to adaptively control the equalizing process of series-connected lithium-ion batteries. The proposed battery equalization scheme is a bidirectional dc-dc converter with energy transferring capacitor that can be used to design the bidirectional nondissipative equalizer for a battery balancing system. Furthermore, it can be designed as a ripple-free converter for improving the input current distortion of the battery charge supply power system. A fuzzy-logic-controlled strategy is constructed with a set of membership functions to prescribe the cells equalizing behavior within a safe equalizing region for rapid cell voltage balancing. The simulation and experimental results show the advantage of the predicted equalizing performance of the lithium-ion battery stacks. The proposed fuzzy logic control battery equalization controller can abridge the equalization time about 32%. The proposed method maintains safe operation during the charge/discharge state in each lithium-ion cell of the battery strings.