一种LED汽车前照灯的电路驱动设计及实现_马永胜
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10.16638/ki.1671-7988.2018.13.043汽车LED前照灯驱动电路设计方案刘攀,雷旭,初翔杰,吴露露,黄占君,麻美妮,刘盛德(安徽江淮汽车集团股份有限公司,安徽合肥230601)摘要:近年来随着中国政府大力推进实施节能减排政策,汽车LED照明技术成为重要的节能减排技术之一。
由于LED节能、环保、高亮度、高寿命特点,使得LED照明越来越多的运用到汽车上。
前照灯作为汽车上高功率电器之一,LED照明技术必将在前照灯中取代卤素灯泡的位置。
驱动电路设计是汽车LED前照灯设计中的核心部分,掌握汽车LED前照灯驱动电路的设计方法显得尤其重要。
关键词:LED;前照灯;驱动电路;设计方案中图分类号:U463.6 文献标识码:A文章编号:1671-7988(2018)13-128-03The design scheme of automobile LED headlamp driving circuitLiu Pan, Lei Xu, Chu Xiangjie, Wu Lulu, Huang Zhanjun, Ma Meini, Liu Shengde( Anhui Jianghuai Automobile Co. Ltd, Anhui Hefei 230601 )Abstract: In recent years, with the Chinese government vigorously promote the implementation of energy conservation and emissions reduction policy, car LED lighting technology has become one of important technology for energy conservation and emissions reduction, due to the LED energy saving, environmental protection, high brightness, high service life characteristics, LED lighting, more and more applied to cars. As one of the high power electric, LED lighting technology will replace the position of the halogen bulbs in headlamps. Drive circuit design is the core part in the design of automobile LED headlamps, master automobile LED headlamps drive circuit design method is especially important.Keywords: LED; Headlamp; Drive Circuit; Design SchemeCLC NO.: U463.6 Document Code: A Article ID: 1671-7988(2018)13-128-03引言近年来随着中国政府大力推进实施节能减排政策,汽车LED照明技术成为重要的节能减排技术之一,由于LED节能、环保、高亮度、高寿命特点,使得LED照明越来越多的运用到汽车上。
LED汽车前照灯驱动电路设计与仿真刘益宏;屠大维【摘要】随着大功率LED性价比的提高,输出光流量的增加,使LED应用在汽车前照灯成为可能.在输入电压在10~14 V之间变化,负载采用8颗700 mA大功率白光LED的条件下确定驱动方式、拓扑结构和调光方式,设计一种基于LTC3783芯片PWM控制LED亮度的恒流LED汽车前照灯驱动电路,并用LTspiceIV软件对电路进行了仿真.结果表明,输入电压在10~14 V变化时输出电流为一个710 mA均值,有0.7%纹波的电流,电流精度为2.1%,输出电压为28.6 V,输出功率为20 W,电路转换效率为91%.有PWM信号输入时,电路输出一个与PWM信号相同占空比的电流.通过调节PWM信号的占空比实现LED亮度的控制.%With the improvement of cost-effective and increase of output light flaw, the high-power LED used in automobile headlamps becomes possible. A constant current LED array driver used as automotive headlamp based on LTC3783 chip is designed, which considering the drive mode, topology and dimming means. An automotive supply voltage was used as input voltage, and the drive used 8 white high power 700 mA LED in series. The circuit simulation results with LTspiceIV software show that the output currentis a mean of 710 mA, with 0. 7 % ripple current when the input voltage changed from 10 to 14 V, the current accuracy is 2. 1% , the output voltage is 28. 6 V, the output power is 20 W, the circuit conversion efficiency is 91%. And while there is PWM signal, the output current can be changed with the PWM signal, and they have the same duty cycle.【期刊名称】《现代电子技术》【年(卷),期】2011(034)006【总页数】5页(P203-207)【关键词】汽车前照灯;大功率LED;脉宽调制;LTSPice IV【作者】刘益宏;屠大维【作者单位】上海大学,机电工程与自动化学院,上海,200072;上海大学,机电工程与自动化学院,上海,200072【正文语种】中文【中图分类】TN43-340 引言有统计表明,90% 的交通事故是由于人的因素造成的,危险来源于复杂的交通状况,包括不合理信息、缺少信息以及过度紧张等[1-2]。
一种L ED 汽车前照灯驱动电路设计姚 帅 余桂英(中国计量学院计量测试工程学院,浙江杭州 310018)摘 要介绍一款采用AT 9933芯片的PW M 恒流LE D 汽车前照灯驱动电路,其驱动、拓扑和调光方式分别采用开关型变换器、Boost 2buck 拓扑和PW M 调光方式。
负载采用8颗1W 大功率白光LE D 串联。
实验结果表明,当输入电压在9~16V 之间变化时,输出恒流大小为342mA ,电流精度达213%;当输入电压为12V 时,输出电压为25112V ,电路转换效率达80144%。
关键词 汽车前照灯 大功率LE D PW M 驱动LE D Automotive H eadlamp Driver DesignY ao Shuai Y u G uiying(C ollege of Metrology and Measurement Engineering ,Zhejiang Hangzhou 310018)Abstract :A PW M constant current LE D driver circuit based on AT 9933for autom otive headlam ps is presented.S witch 2type converter ,Boost 2buck topology and PW M dimming m ode are chosen for driver type ,topology and dimming m ode.The experiment results show that when input v oltage varies from 9V to 16V ,the output constant current is 342mA ,and the current accuracy reaches 213%,and when input v oltage is 12V ,output v oltage is 25112V ,the efficiency of the circuit is 80144%.K ey w ords :autom otive headlam p ;high 2power LE D ;PW M driver基金项目:浙江省科技计划项目:LE D 汽车前照灯的研制(2008C21158)。
专利名称:一种带驱动器的LED汽车前大灯专利类型:实用新型专利
发明人:殷平生,宁勇
申请号:CN201821142029.3
申请日:20180717
公开号:CN208951984U
公开日:
20190607
专利内容由知识产权出版社提供
摘要:本实用新型公开一种带驱动器的LED汽车前大灯,包括LED灯主体、驱动器和散热器,所述驱动器的下端并排设有输入端口和输出端口,所述LED灯主体的下部与所述输出端口之间设有连接导线,所述输入端口处设有电源插头线。
本设计的LED汽车大灯结构简单,其电源插头线和驱动器与LED灯主体的连接导线均设在外置驱动器的同一边出线,这样LED灯安装走线更加方便整齐,安装方便且美观,而且外置驱动器为可拆卸设计,维修方便,配套的散热器散热效果好,整体使用寿命长。
申请人:广州凯高光电有限公司
地址:511340 广东省广州市增城新塘镇甘涌村委会大王坑、花头岭
国籍:CN
代理机构:北京万贝专利代理事务所(特殊普通合伙)
代理人:陈领
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