基于單片機(jī)電動(dòng)自行車(chē)蓄電池均衡模塊的設(shè)計(jì)的開(kāi)題報(bào)告(參考版)
2025-03-28 00:12本頁(yè)面
【正文】 分析清楚這些實(shí)際因素，對(duì)于VRLA電池的控制均衡非常重要，盡管實(shí)驗(yàn)研究是在仿真條件下完成的，但是對(duì)實(shí)際中的獨(dú)立系統(tǒng)仍是適用的。通過(guò)對(duì)實(shí)驗(yàn)的測(cè)量數(shù)據(jù)進(jìn)行研究，在不同的調(diào)節(jié)方式對(duì)VRLA電池的充電和壽命皆有影響。所以，過(guò)充保護(hù)調(diào)節(jié)以延長(zhǎng)電池使用已經(jīng)成為公認(rèn)的事實(shí)。結(jié)果顯示VRLA電池壽命受季節(jié)性影響。根據(jù)實(shí)驗(yàn)結(jié)果我們發(fā)現(xiàn)，溫度每下降1度，VRLA電池容量容量下降百分之一。數(shù)據(jù)表明，溫度補(bǔ)償和線性溫度補(bǔ)償讓VRLA電池處于更好的充電狀態(tài)。充電的有效容量對(duì)應(yīng)于額定容量。最大值對(duì)應(yīng)于H2/O2化合的充電半周期。而在系統(tǒng)中，不僅要能確保充放電循環(huán)，充電調(diào)節(jié)也應(yīng)確保充電方式達(dá)到最好，相關(guān)時(shí)間和相應(yīng)的電流電壓狀態(tài)，顯示電池在單個(gè)系統(tǒng)中的具體條件下：充放電電流小于標(biāo)準(zhǔn)放電電流；長(zhǎng)時(shí)間，幾星期甚至月余，電池達(dá)不到滿(mǎn)充狀態(tài)這些特征完全不同于其他應(yīng)用電池，舉例來(lái)說(shuō)，不間斷的供電，電池在一年中保持滿(mǎn)充；或在車(chē)輛牽引應(yīng)用比如叉車(chē)，電池規(guī)則的大電流滿(mǎn)充，實(shí)踐表明，與電池在獨(dú)立應(yīng)用系統(tǒng)中相比，光伏系統(tǒng)中的電池不及其正常壽命，通常在使用三年后就要更換了。試驗(yàn)也對(duì)電池工業(yè)的發(fā)展給出了實(shí)際中的操作建議。通過(guò)分析影響，給出關(guān)于VRLA的科學(xué)建議。在試驗(yàn)中，我們聯(lián)系充電控制，通過(guò)實(shí)驗(yàn)分析三種充電調(diào)節(jié)策略。盡管在光伏系統(tǒng)中，VRLA電池對(duì)于循環(huán)使用成本和服務(wù)需求上的重要作用，但是，到目前為止，還沒(méi)有可以實(shí)現(xiàn)定量計(jì)算的方法。目前的農(nóng)村PV系統(tǒng)電氣化項(xiàng)目中，當(dāng)設(shè)計(jì)PV系統(tǒng)時(shí)，充電調(diào)節(jié)和電池規(guī)格在手冊(cè)中非常常見(jiàn)，包括設(shè)定點(diǎn)電壓，但通常兩者聯(lián)系并不協(xié)調(diào)，從而導(dǎo)致嚴(yán)重后果。這樣看來(lái)，電池需求條件和充電調(diào)節(jié)控制兩者的協(xié)調(diào)統(tǒng)一是提高使用質(zhì)量，延長(zhǎng)使用壽命的關(guān)鍵。不規(guī)范的使用操作，是導(dǎo)致電池質(zhì)量下降的主要原因。大部分VRLA電池的使用壽命小于正常使用壽命。而VRLA蓄電池恰恰是光伏系統(tǒng)的弱點(diǎn)，從成本，壽命和可靠性這幾方面看，事實(shí)證明光伏系統(tǒng)的崩潰首先歸結(jié)到電池的損壞。一個(gè)典型的家用光伏發(fā)電系統(tǒng)包括太陽(yáng)能接受陣列，VRLA蓄電池，調(diào)節(jié)器，負(fù)載。以延長(zhǎng)VRLA電池壽命。和其他策略相比，終電壓與溫度補(bǔ)償呈線性關(guān)系，使VRLA電池處在最好的充電狀態(tài)。在不同的充電調(diào)節(jié)策略下，定量分析電池的充電行為。 Sauer and Bachler, 1997).ConclusionsThe influences of the charge regulator strategies on state of charge and lifetime of the VRLA battery in systems have been studied by using the measured datas. Based on experimental results, the design engineers can choose a costeffective regulator according to the details of photovoltaic system and local climate, and estimate working state of the VRLA battery installed in a system correctly.The understanding for these factors is very important for further optimization of VRLA batteries and control strategies for applications. Although the conclusion is derived by simulating real working conditions, it is in agreement with field experience for the VRLA battery in systems, and it holds for VRLA battery in any standalone system.中文譯文：充電調(diào)節(jié)策略對(duì)系統(tǒng)中VRLA蓄電池的充電狀態(tài)和壽命的影響西安交通大學(xué) 物理系通過(guò)模擬真實(shí)工作條件下的蓄電池工作環(huán)境，以調(diào)查研究過(guò)充電對(duì)于太陽(yáng)能家庭光伏系統(tǒng)中使用的VRLA電池的影響。 35–55 _C。 Guasc and Silvestre, 2003) have presented a simple model for estimating photovoltaic battery lifetime, but they did not consider the difference of battery lifetimes caused by different regulators. Because some experiments for modeling the VRLA battery in household photovoltaic systems are plicated, they predicted the battery behaviour of standalone photovoltaic system usingmathematical approaches only.In this paper, we bine the charge controller with the VRLA battery, and analyze the influence of three kinds of charge regulator strategies on state of charge and lifetime of the VRLA battery in household photovoltaic systems by experiments. And a quantitative analysis of the VRLA battery performance under different charge regulator strategies is given for the first time. By analyzing the effect of the charge regulator strategy on state of charge and lifetime of the VRLA battery in household photovoltaic systems, technical remendations for charge regulation of VRLA batteries are given. According to the details of photovoltaic system and local climate, the design engineers can choose a costeffective regulator, and estimate working state of the VRLA battery installed in a system correctly. The experiments can also help the battery industry to choose and develop appropriate VRLA batteries for photovoltaic applications according to the actual operating conditions of solar home system. The clarification of the performa
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