The thermal problem of the LED strip light usually occurs due to the following reasons:
Electric circuit design problems:
Currently, the most common LED strip lights have two voltage ranges of 12V and 24V. 12V strings include 3 series of parallel multi-channel structures. 24V wires also have 6 series of these parallel structures. Due to the fact that in LED strings, many LEDs are connected in a row, thermal problems may arise for the LED string. The width of the connection line and the thickness of the copper conductor are closely related to the heat loss of the thread. Since the intensity of the current of the circuit is directly related to the cross-sectional area of the circuit, if this case is not considered in the wiring and the length of the connection is greater than the maximum current that the circuit can withstand, the range of the circuit will be damaged and the useful life of the LED will decrease. will find
Problems in the production process:
The thermal problem of the LED strip light can originate from a problem in the production process. Since the LED strands have a series and parallel structure, when a short circuit occurs in a group of circuits, the remaining voltage of the LEDs will increase and the temperature will rise. The most obvious of these problems occurs in 5050 lights, when a short circuit occurs in each of the circuit chips of 5050 lights, the current of the lamp bead increases and doubles; The current suddenly changes from 20 mA to 40 mA. The brightness of the lamp bead is very high in this state and the temperature also increases rapidly and burns the circuit board within a few moments. This problem is very subtle and may not be noticed during the production of the strip lights, because the short circuit does not affect the rest of the lights. During testing, employees only pay attention to the LED light and do not notice or ignore other lighting defects. Therefore, many production lines of some companies face various complaints from customers, but they cannot find the reason. To find the best product see the LED strip lights in chiquelighting products.
solution:
Circuit design:
To solve the thermal problem of the LED strip light, the wiring must have a suitable cross-section and width. 0.5 mm distance between circuits is enough. The thickness of the copper conductor should be increased as much as the design allows. The overall thickness is between 1 and 1.5 ounces.
Production Process:
When printing the solder layer on the board, try not to put this layer between the pads of the board, because it will cause a short circuit.
Avoid short circuit when connecting LED patches.
Check the location of the patch before connecting.
Before electrical testing, visually inspect the wire for any short circuits. Pay attention to the unusual brightness of the LEDs.
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