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工业设计外文翻译--设计对绿色风潮的响应:整体系统和生命周期思想

工业设计外文翻译--设计对绿色风潮的响应:整体系统和生命周期思想
工业设计外文翻译--设计对绿色风潮的响应:整体系统和生命周期思想

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The Design Response to a Wash of Green: Whole Systems and Life Cycle Thinking

Simon Lockrey

What a great idea: a 'green' product to make a difference, make one happy, and assist in performing the menial tasks that litter an otherwise hectic day. Or is it? Consumer decision-making is beginning to follow a distinctly 'green' trend, which is fantastic in principle but often contrived in reality. What does this mean for the designer who imagines, designs and creates these goods that cater for growing consumer demand in 'sustainability?' There lies the contradiction between designing for the consumption obsessed market and designing to the core principles of sustainability, where environmental, economic and social aspects are somewhat detached from a consumer driven market.

According to Ezio Manzini, design theorist from the famed Politecnico di Milano, we have a crisis of the commons (common areas, goods, etc), a lack of contemplative time (a time poor existence, longer hours at work, etc), and most relevant to designers, a proliferation of remedial goods (Manzini 2003). The latter sees products solving every perceived problem imaginable. Whether it is a toothbrush that oscillates the plaque off in half the time, or a breakfast bar filling the five-minute bus ride, we have become increasingly, unconsciously used to products feeding our increasing wants, without a thought

as to how that consumption impacts the environment. Last century, the raw materials consumed by one person in the US increased five fold (Matos and Wagner 1998). This looks more ominous when combined with the fact that only around 15-20 % of the world is highly developed to a US or western style of consumption (UN, 2009). One approach is for design to lower the user's consumption, without degrading the consumer's experience. The question is whether the new breed of 'eco' products adds to the crisis, or makes a real difference.

They may be adding to the crisis if the design method follows the 'rules of thumb' for that infiltrated the design community in last two decades. The reality is that these techniques do have potential to make a difference, but are often ineffective. Take design for disassembly. A designer in an appliance company designs a product for disassembly although there is no effective product stewardship scheme to collect the parts from reclaimed models. The design driven benefit is not delivered, rendering the methodology a waste of time. It is also well and good to reduce the weight of components and thus the embodied energy of the same appliance, however if the bulk of the impacts are generated during use from electricity (like an electric kettle), then the strategy most likely has negligible benefit in reducing

environmental load. Likewise by making parts from commonised, recyclable materials, the likelihood is that there is no post consumer recycling stream or infrastructure in place to handle the majority of parts and materials, due to the commercial reality of recycling. This design for environment mentality has long been detached from the benefit it has aimed to deliver upon.

There is a light at the end of this tunnel. There are ways to make a difference, and there is evidence these methods are filtering through the design world. Life cycle thinking or applying a 'whole systems' approach can make 'paradigm shifts' in the reduction of environmental impacts of a product or service, without reducing perceived quality, or increasing cost.

As these ideas infiltrate design methodology, certain products shine as considered, sustainable shifts in the current 'wash of green'.

Cheviot Bridge's sustainable wine packaging.

Cheviot Bridge

The romantics among us would never have thought Shiraz would prosper in a Tetra Pak, a packaging

form traditionally reserved for juice and milk. However some producers such as have, with a reduced packaging weight of almost 10 times a conventional bottle (unfilled). This dematerialisation enables huge embodied energy, carbon and water use reductions on the packaging, not to mention reduced haulage impact after filling (particularly for export, 1.05 kg rather than 1.5 kg per unit), and a smart palletisation shape for shipping and storage. The decision to move to a paper board packaging mode derived from extensive life cycle research, cost comparison and product testing (which funnily enough, contrary to some stigma, highlighted longer shelf life) to measure the potential benefits. The weight reduction, combined with an additional 250 mL of wine to the customer (the product is delivered in 1 L), delivers a quality driven outcome, with a raft of environmental and economic benefits due to life cycle thinking.

Dyson's Airblade.

Dyson

James Dyson didn't go places by creating a better bag, he decided to create a cyclonic vacuum cleaner based on a saw mill, and the rest is history. This whole systems approach led Dyson to design highly

efficient, miniature digital motors for the appliance market around ten years ago. The use life cycle impacts of an electrical appliance generally dwarf the respective material and manufacture impacts. This relates back to the energy, fuels and raw materials consumed in operation of an appliance. By identifying the original motor as a major contributor to inefficiency within the product system, an opportunity for a technology leap was found. Carbon producing, large, heavy, inefficient, failure-prone, brushed motors were replaced by highly efficient, light, fast, small, digital ones.

Last year saw the latest Dyson products incorporate a tiny Dyson Digital Motor (DDM) V2 resulting in substantial dematerialisation coupled with ergonomic weight benefits. Handheld vacuums were launched with the DDM, replacing the traditional carbon brushed motor. The cost difference between base models is negligible, while functional and environmental credentials have improved markedly. The new models are smaller and lighter, and remain almost half the weight of competitor machines. The DDM V2 size allows for high speed rotation, not achievable in larger, heavier motors. This produces around twice the power output at around half the weight of traditional motors, the new base model handheld pulling the same suction power as the previous model, using two less batteries.

The Dyson Airblade?, which incor porates the first iteration of the DDM, is the first hand dryer to earn the coveted Carbon Reduction Label from the UK Carbon Trust. This achievement relates back to efficiency and whole systems design. By reverting to a polymer chassis compared to aluminium on the first Airblade? release, Dyson cut carbon emissions in raw material, product manufacture and transport by over half, however this is not the preeminent story. Airblade? 'strips' the water off the hands, rather than heating air up and 'evaporating' water like a conventional warm air hand dryer. Airblade? drops the drying time to around 10 seconds, as opposed to up to 30 seconds with competitors which use inefficient carbon brush motors and heated air. Things start to look substantially thrifty without even crunching the numbers. In a press release, the comparison is up to 80% less energy used compared to traditional warm hand dryers (Carbon Trust 2010), which directly relates to carbon emission reductions. This giant gap in energy consumption, combined with product longevity, and a product stewardship scheme, delivers environmental benefits that directly reduce impacts in new Dyson models.

The Keep Cup and its many color combinations.

Keep Cup: An LCA Case Study

Whilst operating a chain of cafés in Melbourne, Abigail and Jamie Forsyth saw a need and responsibility to address disposable packaging waste generated both to reduce environmental impacts and costs. They estimated that in Australia at least 500 million disposable cups are used and discarded each year with large numbers of adults in urban communities consuming a disposable coffee on a daily basis (National Coffee Association of America found that in 2007, 14% of adults in the United States drank gourmet coffee daily). Although disposable cups are a low margin, the wider impacts of the daily 'take away coffee set' seemed one problem that did not justify the convenience. Others have attempted to either incorporate Post Consumer Recycled (PCR) content or sell reusable products such as 'travel mugs' designed to keep coffee hot for hours. The former has issues with food regulations; the latter is cumbersome and impractical for the savvy, on-the-go consumer, not designed to fit the needs of quality cafébaristas. The duo engaged industrial design consultancy Niche, with government funding, to create a solution dropping environmental impacts without reducing the consumer's experience.

The result was KeepCup, a reusable cup for the takeaway espresso market. It is the world's first barista standard reusable cup, consisting Polyethylene (PE) lid, Polypropylene (PP) cup, Thermoplastic Polyurethane (TPU) plug, and Silicone ring. It mimics the core geometry and functions of disposable paper cups, including coffee machine modularity, waterproofing, sip slot, lid, individual coffee detailing, and adds hand insulation (avoiding double cupping), steam plug, branding, and most importantly ergonomics to allow for convenience ie light weight, bag storable, etc. The concept has gained momentum, the cup used all over the Melbourne CBD, Australia, and now globally. 300,000 KeepCups have been sold in twelve months of trading, as adoption of the KeepCup by end users has generated revenue and costs savings for café owners. But is it really making a difference?

We did some research here at RMIT Centre for Design. Disposable paper cups (combined with a PE film) have little post consumer demand from reprocessors, and generally end up in Australian landfill. Although the KeepCup promotes recyclability, the fact still remains that the same system is more likely going to spit the various polymers it is made from to landfill, even if the components are separated by the consumer. With this in mind we modeled the 8 oz KeepCup (it is available in various sizes) against

a comparable disposable paper cup using Life Cycle Assessment (LCA) methodology in a streamlined fashion. The functional unit was 1 take away coffee per day delivered to the consumer over a year, with the cups disposed of to landfill over or at the end of that period. We used raw material, manufacturing, transport, and end of life data from the Australian Life Cycle Inventory (LCI) 2009 and European Ecoinvent 2.0 database. Regional transport routes were considered (shipping from Asia for the disposable cup, lid, and the ring from the KeepCup, trucking from port to consumer), as well as tertiary packaging, and a wash cycle per use for the KeepCup, ranging from a quick rinse with warm water, a fully loaded dishwasher, half loaded dishwasher, and sink washing, the latter three with detergent. We also modeled coffee cultivation, production and brewing in Spain from a study out of Switzerland (Humbert, Loerincik et al. 2009) to see what bearing the KeepCup had in context to the 'whole product

The results were determined using the LCA Australian Impact Method. The KeepCup compared to the disposable paper cup (not including the coffee) depending upon the wash type (the sink seeing the

smallest through to quick rinse seeing the biggest environmental impact reductions), sees a 71-92% reduction in global warming potential, a 71-95% reduction in water use, and a 95-96% reduction in landfill waste over the year. Although the 'take away latté set' consumer will still purchase the coffee whether in a disposable or reusable option, it is interesting to see how the previously stated savings compare when included with the impacts relating to coffee, which would in general dilute the savings of the container on its own. The KeepCup compared to disposable paper cup (including coffee) sees a 36-47% reduction in global warming, a 64-85% reduction in water use, and a 91-92% reduction in landfill waste annually.

Although these are streamlined results using existing LCI data (a full LCAs may be more accurate, although often results are of a similar quantum), the figures indicate Keepcup would drastically reduce environmental impacts of consumers in drinking coffee, although in the grand scheme of things this would account for a very small proportion of a consumers overall impacts annually. This just seems like common sense, reusing rather than disposing, although this begs the question how the Keepcup strategy could apply to more resource intensive services such as heating, cooling, cooking, food,

housing, and transport; if social rituals adapt. The KeepCup aesthetics are clean, and functionally it is thoughtfully designed, evident in the now global appeal. Although KeepCup is most likely not going to be recycled in the Australian context, the shift from disposable to reusable adds environmental credibility, significantly reduces waste, cuts the economics down to size, and enables a social shift, a welcome change for a society now used to throwaway culture.

Paris Vélib

Wide spread change in avoiding behaviours that embody high consumption may be some way off. Design has been instrumental in delivering some of the first tentative steps in facilitating individual and community action in this respect. Take the Paris Vélib, a bike share program introduced in 2007 to promote cycling as opposed to other transport modes throughout Paris for short journeys. By diverting investment traditionally earmarked for carbon intensive transport modes, like more roads, a highly design oriented system delivers the low consumption alternative. If success is measured in use alone, 42 million rentals by 2009 speak loudly. The system works as a whole, with infrastructure, communications and servicing the key in delivering this success, producing a product that would

continue to be used and reduce impacts inherent in other transport modes.

The bikes, stands and 1451 bike stations (one every 300 meters) designed by JC Decaux stay true to core design principles of 'form follows function' and user centred methodology. Stations release only functioning bikes to users, a smart system alerting well resourced and mobile service staff of faults through diagnostic checks when bikes 'check-in'. This computer monitoring system is also used to monitor bike location for potential theft and station overloading, with bikes actively moved too and from understocked and overloaded stations. Locks guarantee integrated bike and station security. Bespoke components and economic deterrents dissuade potential thieves; with credit cards debited a deposit on a user's non return of a bike. Economic incentives also drive timely travel, with free bike use in the first half hour. Compared to short trip alternatives such as cars or public transport, this product driven system delivers substantial dematerialisation through lower embodied energy and shared amenities, as well as massive comparative drops in fuel and electricity use. Social interaction is generally inherent in the cycling fraternity; however this is also aided through infrastructure design. Finally, the Vélib negates the problem of storage required when a bike is owned in a bustling city. Like

any public system, there have been problems with vandalism and theft; however the success of the Vélib is evident as use patterns remain high and similar bike sharing schemes flourish across Europe, and are proliferating globally.

Paris Vélib bicycle rental system. Picture by austineven.

Vélib is an elegantly integrated, cost effective design solution allowing users to enact behaviours needed if environmental impacts are to be reigned in, as well as reinvigorating the social fabric of the city. Vélib rejects the remedial with long lasting functional infrastructure, claims back the common in a shared public service, and provides amenities that go some way in reducing congestion and providing a

convenient, communal conveyance that gifts back the free time Manzini believes we have long being lacking in our fast paced, consumer oriented urban existence.

People are not going to stop consuming any time soon; however behavior will eventually need to shift if society is serious about being truly sustainable. In the interim, analyse the bigger picture, both as a designer and a consumer. So often designers get caught up in the details, but now stepping back and taking a life cycle and whole systems approach facilitates a future in delivering functional 'paradigm shift' benefits for a product, service, client, and the environment. Ecological parameters are 'locked in' at the design stage, so designers can reduce impacts through materials, efficiency, or in some cases the grander scenario of changing consumer behavior. Designing for low consumption, without increasing price or reducing quality is achievable, and presents a powerful and bright design landscape. To achieve this, designers will have to draw upon their ability to combine technical skills in research, conceptualization, prototyping, and testing, with their greatest weapon, their creativity, because that's what they have done, and will always do best.

Acknowledgments to Thomas Blower (Dyson, UK), Hugh Cuthbertson (Cheviot Bridge), Abigail

Forsyth (KeepCup), Andrew Carre (CfD), and Stephen Clune (CfD)

Simon Lockrey is a Research Fellow at RMIT Centre for Design in Melbourne

设计对绿色风潮的响应:整体系统和生命周期思想

作者西蒙·洛克雷

一个伟大的想法,“绿色”产品使情况与众不同,让人们感到快乐,并且帮助人们执行重要的任务以避免人们被忙碌的生活搅乱。是这样吗?消费者开始追随独特的“绿色”趋势,在原则上这是很棒的,但在现实中这常常是做作的行为。这对于想象,设计,制造这些产品以迎合“可持续性”原则下消费者需求增长的设计师又意味着什么呢?设计师处于市场和“可持续”原则的矛盾之中,环境,经济,社会等方面的因素和被市场驱动的消费者是有些脱节的。

埃西奥·曼奇尼是一个来自著名的米兰理工大学的设计理论家,据他在2003年说,我们存在公共危机(包括公共区域和商品等方面),我们缺少思考的时间(生活的时间很少,大多的时间用在工作上),这与设计师关系紧密,他们需要制造更多的产品来改善这些情况。最后一个观点认为通过产品解决每一个已发现的问题是可行的。无论是一把节约一半时间的震动牙刷还是在公交车上解决早餐的早餐棒,我们已经越来越多的无意识的通过产品来满足我们日益增长的需求。

上个世纪,平均一个美国人消耗的原材料增长了五倍。结合当时世界上只有15—20%的地区发展到欧美的消费水平,未来的情况就更加不妙了。一种解决方法是通过设计,在不损害用户体验的前提下降低消耗。问题在于新型的环保产品最终能否改变危机现状。

如果设计遵循过去二十年设计界流行的经验法则,那么这种危机将会加重。这些技术都具有改变这种情况的可能,但现实情况证明这种可能是无效的。例如可拆卸设计,一个家电公司的设计师设计出可拆卸的产品,虽然现在没有有效的收集再生模型零件的产品管理方案。设计作为驱动力不能实现利润,这导致方法论成为浪费时间。当然减轻组件的重量并因此减少一件电器的能源消耗也是一件好事,然而如果是依靠大量电力产生作用的电器(如电热水器)那么这种消耗的减少在减轻环境负荷方面的作用就微乎其微了。同样是使用通用的可回收材料,但考虑到目前的商业回收系统的现状,很可能没有处理主要部件和材料的回收系统和基础。环保设计的理念和实现利益的目标早已分离。

在隧道的尽头还是有光芒存在的。有一些方法可以改变这种情况,并且有证据表明这些方法是经过设计界检验的。应用生命周期思维或者整体系统方法可以产生模式转变,在不降低质量或增加成本的前提下降低产品和服务对环境的影响。

由于这些思想对设计方法的渗透,现实中的产品被认为可以在现在的绿色风潮中实现华丽可靠的转变。

Cheviot Bridge葡萄酒公司

我们绝不会想到浪漫的穗乐仙葡萄酒会因为利乐包而变得广受欢迎,这种包装形式历来游泳来储存果汁和牛奶的。例如澳洲葡萄酒公司Cheviot Bridge就采用比传统酒瓶轻十倍的包装。这种改变为包装节约了大量的能源,如碳和水,更不必说在运输上的节约(在出口中尤其明显,每瓶装满的酒从1.5千克降到1.05千克),并且新包装的简洁的形状更适合运输和储藏。将包装转变为纸板的决定来自对生命周期的大量研究,通过产品测试和比较来评估潜在的利益,有趣的是,与一些不合理的倾向相反,这次更强调延长包装的寿命。包装质量减少的同时消费者可以多得到250毫升的酒(产品净含量一升),这就是通过生命周期思想实现了环境效益和经济效益。戴森电机

詹姆斯戴森决定用锯木机原理创造一个气旋是真空吸尘器而不是创造一个更适合旅行的背包,这还有一段历史。十年前道森运用整体系统思维为家电市场设计高效的小型数码电机。生命周期对家电使用的影响要大于材料和制造的影响。这又要说回到能源,燃料和原材料在机器运转

工业设计专业英语英文翻译

工业设计原著选读 优秀的产品设计 第一个拨号电话1897年由卡罗耳Gantz 第一个拨号电话在1897年被自动电器公司引入,成立于1891年布朗强,一名勘萨斯州承担者。在1889年,相信铃声“中央交换”将转移来电给竞争对手,强发明了被拨号系统控制的自动交换机系统。这个系统在1892年第一次在拉波特完成史端乔系统中被安装。1897年,强的模型电话,然而模型扶轮拨条的位置没有类似于轮齿约170度,以及边缘拨阀瓣。电话,当然是被亚历山大格雷厄姆贝尔(1847—1922)在1876年发明的。第一个商业交换始建于1878(12个使用者),在1879年,多交换机系统由工程师勒罗伊B 菲尔曼发明,使电话取得商业成功,用户在1890年达到250000。 直到1894年,贝尔原批专利过期,贝尔电话公司在市场上有一个虚拟的垄断。他们已经成功侵权投诉反对至少600竞争者。该公司曾在1896年,刚刚在中央交易所推出了电源的“普通电池”制度。在那之前,一个人有手摇电话以提供足够的电力呼叫。一个连接可能仍然只能在给予该人的名义下提出要求达到一个电话接线员。这是强改变的原因。 强很快成为贝尔的强大竞争者。他在1901年引进了一个桌面拨号模型,这个模型在设计方面比贝尔的模型更加清晰。在1902年,他引进了一个带有磁盘拨号的墙面电话,这次与实际指孔,仍然只有170度左右在磁盘周围。到1905年,一个“长距离”手指孔已经被增加了。最后一个强的知名模型是在1907年。强的专利大概过期于1914年,之后他或他的公司再也没有听到过。直到1919年贝尔引进了拨号系统。当他们这样做,在拨号盘的周围手指孔被充分扩展了。 强发明的拨号系统直到1922年进入像纽约一样的大城市才成为主流。但是一旦作为规规范被确立,直到70年代它仍然是主要的电话技术。后按键式拨号在1963年被推出之后,强发明的最初的手指拨号系统作为“旋转的拨号系统”而知名。这是强怎样“让你的手指拨号”的。 埃姆斯椅LCW和DCW 1947 这些带有复合曲线座位,靠背和橡胶防震装置的成型胶合板椅是由查尔斯埃姆斯设计,在赫曼米勒家具公司生产的。 这个原始的概念是被查尔斯埃姆斯(1907—1978)和埃罗沙里宁(1910—1961)在1940年合作构想出来的。在1937年,埃姆斯成为克兰布鲁克学院实验设计部门的领头人,和沙里宁一起工作调查材料和家具。在这些努力下,埃姆斯发明了分成薄片和成型胶合板夹板,被称作埃姆斯夹板,在1941年收到了来自美国海军5000人的订单。查尔斯和他的妻子雷在他们威尼斯,钙的工作室及工厂和埃文斯产品公司的生产厂家一起生产了这批订单。 在1941年现代艺术博物馆,艾略特诺伊斯组织了一场比赛用以发现对现代生活富有想象力的设计师。奖项颁发给了埃姆斯和沙里宁他们的椅子和存储碎片,由包括埃德加考夫曼,大都会艺术博物馆的阿尔弗雷德,艾略特诺伊斯,马尔塞布鲁尔,弗兰克帕里什和建筑师爱德华达雷尔斯通的陪审团裁决。 这些椅子在1946年的现代艺术展览博物馆被展出,查尔斯埃姆斯设计的新的家具。当时,椅子只有三条腿,稳定性问题气馁了大规模生产。 早期的LCW(低木椅)和DWC(就餐木椅)设计有四条木腿在1946年第一次被埃文斯产品公司(埃姆斯的战时雇主)生产出来,被赫曼米勒家具公司分配。这些工具1946年被乔治纳尔逊为赫曼米勒购买,在1949年接手制造权。后来金属脚的愿景在1951年制作,包括LCW(低金属椅)和DWC(就餐金属椅)模型。配套的餐饮和咖啡桌也产生。这条线一直

太阳能光伏设计方案

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Abstract With the concept of”Green and Environmental Protection”was proposed.All kinds of new energy exploitation program are in the rapid promotion,which is in order to solve the power shortage,pollution and other issues.It makes exploring renewable energy feedback the grid technology has a very important practical significance.How to deliver power into the grid reliably and quality is an important problem,the inverter mat Can transform the electrical energy in the system of the renewable resource to be fed into the grid is becoming one of the hot points in intemational research. Based on the bridge inverter the analysis of the working principle and the deduction of the control equation have been presented. The strategy integrates an outer loop grid current regulator with capacitor current regulation to stabilize the system. The current regulation is used for the outer grid current control loop. The frequency of switching is slower in the high power grid-connected inverter. Compared with tradition type L or type LC, output filter and output current’s THD of type LCL are all smaller.So on this basis, the system uses the LCL filter. This paper compares the net current of the single-phase inverter and net single loop and double loop under two control strategies, and the case of sudden disturbance of the dynamic change of the system. In complete control system on the basis of theoretical analysis, design and production of this article is based on TMS320LF2407DSP’s digital control hardware test system, including the DSP external circuit, analog sampling and conditioning circuit, isolation, driver circuit, protection circuit and auxiliary power, etc., via MATLAB software to validate the feasibility of the theory.Achieve power factor is 1 and network requirements. Keywords Grid-connected inverter;LCL filter; Double current loop control; DSP

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(文档含英文原文和中文翻译) 中英文对照外文翻译 Design of a Lead-Acid Battery Charging and Protecting IC in Photovoltaic System 1.Introduction Solar energy as an inexhaustible, inexhaustible source of energy more and more attention. Solar power has become popular in many countries and regions, solar lighting has also been put into use in many cities in China. As a key part of the solar lighting, battery charging and protection is particularly important. Sealed maintenance-free lead-acid battery has a sealed, leak-free, pollution-free, maintenance-free, low-cost, reliable power supply during the entire life of the battery voltage is stable and no maintenance, the need for uninterrupted for the various types

of has wide application in power electronic equipment, and portable instrumentation. Appropriate float voltage, in normal use (to prevent over-discharge, overcharge, over-current), maintenance-free lead-acid battery float life of up to 12 ~ 16 years float voltage deviation of 5% shorten the life of 1/2. Thus, the charge has a major impact on this type of battery life. Photovoltaic, battery does not need regular maintenance, the correct charge and reasonable protection, can effectively extend battery life. Charging and protection IC is the separation of the occupied area and the peripheral circuit complexity. Currently, the market has not yet real, charged with the protection function is integrated on a single chip. For this problem, design a set of battery charging and protection functions in one IC is very necessary. 2.System design and considerations The system mainly includes two parts: the battery charger module and the protection module. Of great significance for the battery as standby power use of the occasion, It can ensure that the external power supply to the battery-powered, but also in the battery overcharge, over-current and an external power supply is disconnected the battery is to put the state to provide protection, the charge and protection rolled into one to make the circuit to simplify and reduce valuable product waste of resources. Figure 1 is a specific application of this Ic in the photovoltaic power generation system, but also the source of this design. Figure1 Photovoltaic circuit system block diagram Maintenance-free lead-acid battery life is usually the cycle life and float life factors affecting the life of the battery charge rate, discharge rate, and float voltage. Some manufacturers said that if the overcharge protection circuit, the charging rate can be achieved even more than 2C (C is the rated capacity of the battery), battery manufacturers recommend charging rate of C/20 ~ C/3. Battery voltage and temperature, the temperature is increased by 1 °C, single cell battery voltage drops 4 mV , negative temperature coefficient of -4 mV / ° C means that the battery float voltage. Ordinary charger for the best working condition at 25 °C; charge less than the ambient temperature of 0 °C; at 45 °C may shorten the battery life due to severe overcharge. To make the battery to extend the working life, have a certain solar battery array Charge controller controller Discharge controller DC load accumulator

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