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Shenzhen KINRI Energy Technology Co.,Ltd.

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· Development of high frequency switching power supply technology for communication

The integration and miniaturization of high-frequency switching power supply for communication is the main trend of development in the future. The power density will be larger and larger, and the requirements for technology will be higher and higher. At present, the development of high-frequency switching power supply technology for communication mainly includes the following aspects: converter topology, modeling and simulation, digital control and magnetic integration. 1. Converter topologyIn recent years, soft switching technology, power factor correction technology and multilevel technology are hot spots in converter topology. Using soft switching technology can effectively reduce the loss and switching stress of high-frequency switching power supply for communication, which is helpful to improve the efficiency of the converter; PFC technology can improve the input power factor of AC / DC converter and reduce the harmonic pollution to power grid; Multilevel technology...
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11-11
2021
· Discussion on the research on battery charging technology

Lead-acid batteries because of its low manufacturing cost, large capacity, inexpensive and widely used. However, if used improperly, it will be greatly shortened life expectancy. Many factors influence the service life of lead acid battery, and a correct charging method, can effectively prolong the service life of the battery. There are several methods for battery charging: Constant current charging method. Constant current charging method is used to adjust the output voltage of the device or change the charging and battery series resistance method, maintain the strength of charging current constant charging method, as shown in figure 2. The control method is simple, but because the battery current capability is acceptable as the charging process gradually decline, to the charging period, the charging current for the electrolysis of water, gas, the air outlet is too, therefore, often selecting phase charging method. Two stage charging method. The method includes two stage...
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01-13
2022
· What is the difference between a frequency converter and a variable frequency power supply?

With the continuous progress of the times, electrical appliances will also be constantly updated, and auxiliary equipment will also be constantly changing. Below, we will have a detailed understanding of the differences between frequency converters and variable frequency power supplies.What is a frequency converter?Variable frequency drive (VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's operating power supply.The frequency converter mainly consists of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, driving unit, detection unit, microprocessing unit, etc. The frequency converter adjusts the voltage and frequency of the output power supply by disconnecting the internal IGBT, providing the required power supply voltage according to the actual needs of the motor, thereby achieving energy conservation and speed regulation. In addition, the frequen...
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03-09
2023
· What are the uses and usage precautions of outdoor energy storage power supplies?

Outdoor energy storage power refers to a device that stores the electricity collected by renewable energy devices such as solar panels or wind turbines in battery packs for future use outdoors. It usually includes core components such as solar panels, charging controllers, energy storage batteries, and inverters. The main uses of outdoor energy storage power sources are as follows:Power supply: Outdoor energy storage power can provide reliable power support for outdoor lighting, wireless communication, monitoring and other equipment, ensuring that these devices can operate normally when unable to connect to the mains.Emergency backup power supply: In disaster and emergency situations, outdoor energy storage power can be used as a backup power supply to provide power support for emergency work such as rescue and communication.Mobile energy: The lightweight and portable characteristics of outdoor energy storage power make it the preferred choice for mobile energy in outdoor camping,...
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05-02
2023
· What are the functions of optocouplers in switching power supplies?

Optocoupler is a device that separates input and output circuits through optical isolation. It consists of a light-emitting diode (LED) and a phototransistor (Phototransistor); It has unidirectional signal transmission, thus achieving electrical isolation between the input and output ends, that is, the output signal has no impact on the input end, has strong anti-interference ability, stable working characteristics, high reliability, and high transmission efficiency. It is usually used in switch mode power supply control circuits. The typical application principle of optocouplers in switching power supplies is to sample from the output end, obtain error signals, and then convert and isolate the signals to the PWM controller of the input IC. By adjusting the PWM duty cycle, high-precision stable voltage output is achieved.In switch mode power supplies, optocouplers mainly include the following functions:1. Electrical isolation: Switching power supplies typically require the isolatio...
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05-18
2023

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