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1. 发明授权

US09485821B2 LED lighting drive circuit 有权
标题翻译： LED照明驱动电路
公开(公告)号：US09485821B2
公开(公告)日：2016-11-01
申请号：US14906493
申请日：2014-07-21
申请人： SICHUAN SUNFOR LIGHT CO., LTD. , UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
发明人： Dongming Li , Mian Yang , Zhengyong Feng , Wentao Long , Ning Ning , Dejun Yu , Chunyi Feng , Yongming Jia
IPC分类号： H05B33/08
CPC分类号： H05B33/0824 , H05B33/0809 , H05B33/083 , H05B33/0845 , H05B33/0887 , H05B33/089 , H05B33/0896
摘要： An LED lighting drive circuit supplies power for N groups of LED loads. The LED lighting drive circuit comprises N current paths, N groups of LEDs, and a constant current section. The LED lighting drive circuit enables the current of LED lamps to change in a sinusoidal half-wave form with the utility AC input, and keeps the current a constant effective value.
摘要翻译： LED照明驱动电路为N组LED负载供电。 LED照明驱动电路包括N个电流路径，N组LED和恒定电流部分。 LED照明驱动电路使得LED灯的电流以公用交流输入的正弦半波形变化，并保持电流恒定的有效值。

2. 发明授权

US09819195B2 Multipath current source switching device 有权
公开(公告)号：US09819195B2
公开(公告)日：2017-11-14
申请号：US14655520
申请日：2013-12-27
申请人： UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA , SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Ning Ning , Yongming Jia , Wenbin Chen , Chunyi Feng , Dongming Li , Mian Yang , Zhengyong Feng , Wentao Long
IPC分类号： H02J4/00 , H05B33/08
CPC分类号： H02J4/00 , H05B33/0812 , H05B33/083 , Y02B20/343 , Y02B20/345 , Y10T307/43
摘要： The present disclosure discloses a multipath current source switching device, including a switching control unit, N current paths, and N loads. Each current path is formed by a constant current source circuit and a switching circuit. One terminal of a first load is coupled to a load power supply, and the other terminal of the first load is coupled to an output terminal of a constant current source circuit of a first current path and one terminal of a second load; one terminal of an ith load is coupled to the other terminal of an (i−1)th load and an output terminal of a constant current source circuit of an ith current path; and the switching control unit controls an output current of a corresponding constant current source circuit through a corresponding switching circuit. When the circuits are switched, an output voltage of a switching circuit of a current path to be switched off is decreased to zero according to a preset voltage variation quantity, and an output voltage of a switching circuit of a current path to be switched on is increased to a highest operating voltage according to the preset voltage variation quantity, such that a current on a load does not exceed a preset current and is not zero during switching. N is an integer not less than 2, and i is equal to 2, 3, 4, . . . , N.

3. 发明授权

US09565724B2 Alternating current rectifying circuit and alternating current rectifying method for driving LED module 有权
标题翻译：交流整流电路和驱动LED模组的交流整流方法
公开(公告)号：US09565724B2
公开(公告)日：2017-02-07
申请号：US14762666
申请日：2013-12-24
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Dongming Li , Zhengyong Feng , Wentao Long , Mian Yang
IPC分类号： H05B37/02 , H02M7/00 , H05B33/08 , H02M7/06
CPC分类号： H05B33/0809 , H02M1/4266 , H02M7/06 , H02M7/066 , H05B37/02 , Y02B20/342 , Y02B70/123
摘要： Disclosed are an alternating current rectifying circuit and an alternating current rectifying method for driving an LED module. The method comprises: when an alternating current module is in a positive half cycle, after an alternating current output by the alternating current module is rectified, outputting the alternating current to a positive half cycle rectifying branch circuit of an external LED module; when the alternating current module is in a negative half cycle, carrying out charging according to the alternating current output by the alternating current module, and when the alternating current module is in the positive half cycle, carrying out discharging, and outputting the alternating current to a positive half cycle feed branch circuit of the external LED module; when the alternating current module is in the negative half cycle, rectifying the alternating current output by the alternating current module, and outputting the alternating current to a negative half cycle rectifying branch circuit of the external LED module; when the alternating current module is in the positive half cycle, carrying out charging according to the alternating current output by the alternating current module, and when the alternating current module is in the negative half cycle, carrying out discharging, and outputting the alternating current to a negative half cycle feed branch circuit of the external LED module. By using the present invention, stability of an output voltage can be improved, and luminous efficiency of the LED module can be improved.
摘要翻译：公开了用于驱动LED模块的交流整流电路和交流整流方法。该方法包括：当交流电模块处于正半周期时，交流电模块的交流输出整流后，将交流电输出到外部LED模块的正半周期整流分支电路; 当交流电模块处于负半周期时，根据交流模块输出的交流电进行充电，当交流电模块处于正半周期时，进行放电，并将交流电输出至外部LED模块的正半周期馈送分支电路; 当交流电模块处于负半周期时，对交流电模块输出的交流电进行整流，并将交流电输出到外部LED模块的负半周期整流分支电路; 当交流电模块处于正半周期时，根据交流电模块输出的交流电进行充电，当交流电模块处于负半周期时，进行放电，并输出交流电流外部LED模块的负半周期负载分支电路。通过使用本发明，能够提高输出电压的稳定性，能够提高LED模块的发光效率。

4. 发明授权

US09386639B2 White LED light emitting device driven directly by constant alternating current 有权
标题翻译：白色LED发光装置由恒定的交流电直接驱动
公开(公告)号：US09386639B2
公开(公告)日：2016-07-05
申请号：US14371278
申请日：2012-12-25
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Dongming Li , Mian Yang , Zhengyong Feng , Wentao Long , Kun Zhao , Ming Zhang
IPC分类号： H05B37/00 , H05B41/00 , H05B33/08
CPC分类号： H05B33/0809 , H05B33/0821 , H05B33/0827 , H05B33/0887
摘要： The present invention discloses a white LED light emitting device driven directly by constant current in manner of being supplied with alternating current. N parallel branches, consisting of LED modules and constant current units which are in series connection with the LED modules, are connected to an output terminal of a rectification circuit, and by setting the current value, the turning-off voltage, and the turning-on voltage of the constant current unit of each branch, the periodic flickers generated due to changes in the voltage of the alternating current can be avoided. Because the current of each branch is constant, the changes in junction temperatures do not result in the current changing in LED, and the reliability is improved. Along with the increase of the number of the branches, the driving current waveform approximates a sine wave, and the power factor and the efficiency of the light emitting device are improved.
摘要翻译：本发明公开了一种白色LED发光装置，其以直流电流供给交流电流驱动。与LED模块串联连接的由LED模块和恒流单元构成的N个并联支路与整流电路的输出端子连接，通过设定电流值，截止电压和转向电流，每个分支的恒定电流单元的导通电压可以避免由于交流电压的变化而产生的周期性闪烁。由于每个分支的电流是恒定的，所以结温的变化不会导致LED的电流变化，并且提高可靠性。随着分支数量的增加，驱动电流波形接近正弦波，提高了功率因数和发光器件的效率。

5. 发明申请

US20150305100A1 DIMMING DRIVE CIRCUIT OF ALTERNATING CURRENT DIRECTLY-DRIVEN LED MODULE 有权
标题翻译：替代电流直接驱动LED模块的调试驱动电路
公开(公告)号：US20150305100A1
公开(公告)日：2015-10-22
申请号：US14439459
申请日：2013-10-25
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Dongming Li , Wentao Long , Zhengyong Feng , Mian Yang
IPC分类号： H05B33/08
CPC分类号： H05B33/0887 , H05B33/0809 , H05B33/0824 , H05B33/083 , H05B33/0845 , H05B33/089
摘要： Disclosed is an alternating current dimming drive circuit for an LED, comprising a rectification unit and N stages of LED direct current drive circuits. In the ith stage of LED direct current drive circuit, a first end of the ith voltage sampling unit and an input end of the ith LED light source module directly or indirectly receive the output voltage of the rectification unit; a voltage division end of the ith voltage sampling unit is connected to a second input end of the ith switch unit; and a first input end of the ith switch unit is connected to an output end of the ith LED light source module, and an output end of the ith switch unit, a second end of the ith voltage sampling unit and a second output end of the rectification unit are grounded. When the ith switch unit is switched on, the first to the ith LED light source modules emit light. When the ith switch unit is switched off, if i is less than N, the first to the (i+1)th LED light source modules emit light, and if i is equal to N, the first to the Nth LED light source modules stop emitting light. The present invention realizes an alternating current directly-driven LED light source module and will not flicker in the case of alternating current voltage fluctuation.
摘要翻译：公开了一种用于LED的交流调光驱动电路，包括整流单元和N级LED直流驱动电路。在LED直流驱动电路的第i阶段，第i个电压采样单元的第一端和第i个LED光源模块的输入端直接或间接接收整流单元的输出电压; 第i个电压采样单元的分压端连接到第i个开关单元的第二输入端; 并且第i个开关单元的第一输入端连接到第i个LED光源模块的输出端，第i个开关单元的输出端，第i个电压采样单元的第二端和整流单元接地。当第i个开关单元接通时，第一至第i个LED光源模块发光。当第i个开关单元关闭时，如果i小于N，则第一至第（i + 1）个LED光源模块发光，如果i等于N，则第一至第N LED光源模块停止发光。本发明实现了交流直接驱动的LED光源模块，并且在交流电压波动的情况下不会闪烁。

6. 发明授权

US09485829B2 Alternating current rectifying circuit and alternating current rectifying method for driving LED module 有权
标题翻译：交流整流电路和驱动LED模组的交流整流方法
公开(公告)号：US09485829B2
公开(公告)日：2016-11-01
申请号：US15048728
申请日：2016-02-19
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Dongming Li , Zhengyong Feng , Wentao Long , Mian Yang
IPC分类号： H05B33/08 , H02H7/125 , H02M7/06
CPC分类号： H05B33/0887 , H02H7/1252 , H02M1/4266 , H02M7/062 , H02M7/2176 , H05B33/0809 , H05B33/0815 , H05B33/0851 , H05B33/0884 , Y02B20/341 , Y02B20/342 , Y02B70/123
摘要： Disclosed are an alternating current rectifying circuit and an alternating current rectifying method for driving an LED module. By using the present invention, stability of an output voltage can be improved, and luminous efficiency of the LED module can be improved.
摘要翻译：公开了用于驱动LED模块的交流整流电路和交流整流方法。通过使用本发明，能够提高输出电压的稳定性，能够提高LED模块的发光效率。

7. 发明授权

US09860958B2 Dimming drive circuit of alternating current directly-driven LED module 有权
公开(公告)号：US09860958B2
公开(公告)日：2018-01-02
申请号：US14958744
申请日：2015-12-03
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Dongming Li , Wentao Long , Zhengyong Feng , Mian Yang
IPC分类号： H05B33/08
CPC分类号： H05B33/0887 , H05B33/0809 , H05B33/0824 , H05B33/083 , H05B33/0845 , H05B33/089
摘要： Disclosed is an alternating current dimming drive circuit for an LED, comprising a rectification unit and N stages of LED direct current drive circuits. In the ith stage of LED direct current drive circuit, a first end of the ith voltage sampling unit and an input end of the ith LED light source module directly or indirectly receive the output voltage of the rectification unit; a voltage division end of the ith voltage sampling unit is connected to a second input end of the ith switch unit; and a first input end of the ith switch unit is connected to an output end of the ith LED light source module, and an output end of the ith switch unit, a second end of the ith voltage sampling unit and a second output end of the rectification unit are grounded. When the ith switch unit is switched on, the first to the ith LED light source modules emit light. When the ith switch unit is switched off, if i is less than N, the first to the (i+1)th LED light source modules emit light, and if i is equal to N, the first to the Nth LED light source modules stop emitting light. The present invention realizes an alternating current directly-driven LED light source module and will not flicker in the case of alternating current voltage fluctuation.

8. 发明申请

US20140346954A1 WHITE LED LIGHT EMITTING DEVICE DRIVEN DIRECTLY BY CONSTANT ALTERNATING CURRENT 有权
标题翻译：白色LED灯发光装置通过恒定电流直接驱动
公开(公告)号：US20140346954A1
公开(公告)日：2014-11-27
申请号：US14371278
申请日：2012-12-25
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Dongming Li , Mian Yang , Zhengyong Feng , Wentao Long , Kun Zhao , Ming Zhang
IPC分类号： H05B33/08
CPC分类号： H05B33/0809 , H05B33/0821 , H05B33/0827 , H05B33/0887
摘要： The present invention discloses a white LED light emitting device driven directly by constant current in manner of being supplied with alternating current. N parallel branches, consisting of LED modules and constant current units which are in series connection with the LED modules, are connected to an output terminal of a rectification circuit, and by setting the current value, the turning-off voltage, and the turning-on voltage of the constant current unit of each branch, the periodic flickers generated due to changes in the voltage of the alternating current can be avoided. Because the current of each branch is constant, the changes in junction temperatures do not result in the current changing in LED, and the reliability is improved. Along with the increase of the number of the branches, the driving current waveform approximates a sine wave, and the power factor and the efficiency of the light emitting device are improved.
摘要翻译：本发明公开了一种白色LED发光装置，其以直流电流供给交流电流驱动。与LED模块串联连接的由LED模块和恒流单元构成的N个并联支路与整流电路的输出端子连接，通过设定电流值，截止电压和转向电流，每个分支的恒定电流单元的导通电压可以避免由于交流电压的变化而产生的周期性闪烁。由于每个分支的电流是恒定的，所以结温的变化不会导致LED的电流变化，并且提高可靠性。随着分支数量的增加，驱动电流波形接近正弦波，提高了功率因数和发光器件的效率。

9. 发明授权

US09920916B2 Card type LED driver and transportation means with card type driver 有权
公开(公告)号：US09920916B2
公开(公告)日：2018-03-20
申请号：US15039340
申请日：2014-11-25
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Zhengyong Feng , Dongming Li , Mian Yang , Wentao Long
IPC分类号： F21K9/23 , F21K9/238 , F21V23/00 , H05B33/08 , F21V17/12 , F21V17/10 , F21Y115/10
CPC分类号： F21V23/005 , F21S8/00 , F21V17/101 , F21V17/12 , F21V23/0435 , F21Y2105/16 , F21Y2115/10 , H05B33/0803 , H05B33/0809 , H05B33/0812 , H05B33/0815 , H05B33/0818 , H05B33/083 , H05B33/0845 , H05B33/0857 , H05B33/089 , Y02B20/343
摘要： The present invention relates to a card type LED driver and transportation means with the card type driver, characterized in that the card type LED driver includes an installation card tray and a replaceable driving circuit board, the installation card tray being secured to an LED module or an LED lamp with the LED module so as to drive and/or control the LED module through an electrical interface in the installation card tray; the replaceable driving circuit board has at least one AC directly driven LED driving unit, the replaceable driving circuit board being pluggably secured to the installation card tray, thus making possible selectively installing a corresponding replaceable driving circuit board according to lighting scenario requirements, dimming requirements, and electrical characteristics of the LED module.

10. 发明授权

US09775206B2 LED AC drive circuit 有权
公开(公告)号：US09775206B2
公开(公告)日：2017-09-26
申请号：US14913563
申请日：2014-08-22
申请人： SICHUAN SUNFOR LIGHT CO., LTD.
发明人： Mian Yang , Zhengyong Feng , Wentao Long , Dongming Li
IPC分类号： H05B37/00 , H05B33/08
CPC分类号： H05B33/0845 , H05B33/0815 , H05B33/0824 , H05B33/0827 , H05B33/083 , H05B33/0884
摘要： An LED AC drive circuit, comprising: a rectification unit, a current-limiting unit, M LED units and M−1 connected/disconnected control connection lines; each LED unit comprising ni LEDs connected in series, wherein 1≦i≦M, and n1+n2+ . . . +nM=N, 1≦M≦N, and N is determined by formula (I). The M LED units are connected sequentially to the positive end of the rectification unit and to the current-limiting unit connected to the negative end of the rectification unit; the first LED unit comprises switches connected in series at the negative end of the LED string; the ith LED unit comprises switches connected in series at the positive end of the LED string and switches connected in series at the negative end of the LED string, wherein 1≦i≦M−1; and the Mth LED unit comprises switches connected in series at the positive end of the LED string.

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