A high voltage direct current led lamp and solar lighting system
A technology of LED lamps and lighting systems, applied in the field of lighting, can solve problems such as efficiency loss and life of electrolytic capacitors, and achieve the effect of avoiding damage
Active Publication Date: 2017-08-01
SHANGHAI IND TECH INST
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Problems solved by technology
The mains power is stepped down to the solar voltage through AC-DC, and connected to the solar DC bus to supply power to the LEDs. However, this method has the problem of line voltage drop caused by low-voltage and high-current power supply. If the solar panels are connected in series to form a high-voltage DC, such as Figure 5 As shown, LED lamps still need to have a DC-DC step-down drive power supply, and there are still problems with the efficiency loss of the second power conversion and the life of the electrolytic capacitor
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[0043] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.
[0044] The first embodiment of the present invention relates to a solar lighting system, specifically as Image 6 As shown, it includes: DC high-voltage solar cells, solar control unit MPPT, mains power grid, AC-DC power module and high-voltage DC LED lamps.
[0045] Wherein, the high-voltage DC LED lamp includes a DC-DC co...
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The invention relates to an illumination technology, and discloses a high-voltage direct-current LED lamp and a solar illumination system. The high-voltage direct-current LED lamp and the solar illumination system disclosed by the invention comprise a direct-current high-voltage solar cell, a solar power control unit MPPT, a mains supply grid, an alternating current-direct current power supply module and a high-voltage direct-current LED lamp, wherein the high-voltage direct-current LED lamp comprises a direct current-direct current constant current drive chip and at least one LED lamp bead; the direct current-direct current constant current drive chip is connected with the LED lamp bead; after being connected with the MPPT in parallel, the direct-current high-voltage solar cell is sequentially connected with the direct-current port of the alternating current-direct current power supply module and the high-voltage direct-current LED lamp in parallel; the alternating-current port of the alternating current-direct current power supply module is connected with the mains supply grid. According to the high-voltage direct-current LED lamp and the solar illumination system disclosed by the invention, the service life of the direct current-direct current constant current drive chip is long, thus prolonging the service life of the high-voltage direct-current LED lamp; meanwhile, the alternating-current-direct-current power supply module is used for converting the alternating-current high-voltage signal of a mains supply to a direct-current high-voltage signal, thus avoiding the problems of low-voltage high-current wire loss and power loss, and improving energy utilization ratio.
Description
technical field [0001] The invention relates to lighting technology, in particular to a high-voltage direct-current LED lamp and a lighting system. Background technique [0002] At present, there are two ways of solar lighting: solar off-grid independent lighting (such as solar street lights) and solar grid-connected AC power supply lighting. [0003] For solar off-grid independent lighting, such as figure 1 As shown, batteries need to be configured, especially in the way of distributed lighting like street lamps, and the management and maintenance of batteries are difficult. Moreover, general lighting is used under no light conditions, and the lighting period is mainly powered by batteries. Due to the short charging and discharging life of the battery, after the battery fails, there will be problems of system failure and secondary pollution of the battery. At the same time, night lighting is the low valley of urban electricity consumption. Using solar off-grid independen...
Claims
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IPC IPC(8): H05B37/02
Inventor 尹椿荣
Owner SHANGHAI IND TECH INST