The world's first zero-power LED protection chip independently developed by Wentian Quantum Technology Co., Ltd. was successfully developed in Wuhu High-tech Industrial Zone, Anhui Province, and achieved achievement transformation. This marks the formal solution of the modular connection method that has always troubled the LED lighting industry.
It is understood that this kind of chip is currently the best solution for the full series connection of LED small lamp beads, which can maximize the efficiency and reliability of the power supply and make it possible for the LED drive power industry to achieve uniform standards for manufacturing.
The management committee of Wuhu High-tech Zone introduced that the slide samples of this protection chip have been used on 400 LED street lamps within the jurisdiction for 6 months. Through field acceptance, it was found that the protection chips of 54 street lamps have played a role, and there is no street lamp. The replacement of the lamp cap saves more than 160,000 yuan in maintenance costs.
As we all know, LED is currently the most efficient and environmentally friendly lighting source. The LED lamp is composed of LED lamp beads with a diameter of about 5 mm and a power of 1 watt. However, the connection method of these small lamp beads has become a difficult point in the current LED lighting industry. In terms of power supply efficiency optimization and manufacturing standardization, the full series circuit is the best choice. However, the problem with the full series circuit is that if one of the small lamp beads burns out, the entire lamp is completely extinguished. Therefore, the full series circuit has never been used in practical applications.
In the lighting industry, in order to solve the problem that if one string of small lamp beads burns out, the entire lamp will be completely extinguished, in the past, grouping and parallel connection methods have been adopted, that is, several LED small lamp beads are connected in series to form a module. . Although this avoids the disadvantage that a small lamp bead burns the entire lamp off, it has a greater impact on the illumination of the entire lamp. Because the parallel circuit makes the current load of other working modules increase, the life of the lamp shortens. In addition, the power efficiency of the modular connection is low, resulting in low efficiency of LED lamps. At the same time, different module combination methods require different drive power supplies. There has been no unified standard in the industry, resulting in no standard for the design of drive power supplies. For different customers, power supply providers need to design different power supplies, so they have to develop Hundreds of power supplies are available to cope with various possible combinations.
The zero-power protection chip of Q-Qinquan Company enables full series connection. Under the normal working state of the small lamp bead, the protection chip does not work and does not generate current. There is no power consumption. Once a LED lamp bead is burned, the protection chip is immediately Replace the bad lamp beads to conduct current, so as to ensure the full series circuit path and the entire lamp will not go out. At the same time, the current through each lamp bead is constant, ensuring the service life of the lamp.
According to the detection, the LED lamp bead full series lighting method realized by the protection chip has a power supply efficiency improvement of 2% compared with the current traditional module parallel solution method. At the same time, the unified requirement of the full series circuit on the driving power supply is 350 mA The constant current source provides a platform for the standardization of LED lighting power supply manufacturing.
Most of the first 200,000 LED protection chips produced have been delivered.
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