44results about How to "Reduce cooling burden" patented technology

The invention discloses a portable power source charging method, a power source adapter and a portable power source. The portable power source charging method is applied to the power source adapter, and comprises the steps of: communicating with the connected portable power source by a charging handshake protocol, and establishing a communication connection with the portable power source; receiving a target charging parameter sent by the portable power source and required for charging, wherein the target charging parameter is related to the series-parallel mode of a battery pack inside the portable power source; and adjusting a charging parameter for the portable power source according to the target charging parameter. By adopting the method, the charging parameter of electric energy output by the power source adapter can be matched with the charging demand of the portable power source, the voltage conversion process of the portable power source on the charged electric energy is reduced, and the purposes of reducing the charging loss of the portable power source and reducing the heat dissipation burden of the portable power source are fulfilled.

The invention discloses a speed regulating method for a fan. A BIOS is adopted to detect the operating status of a BMC.The operation of speed regulating for the fanis continued by using the BMC when the operating status of the BMC is normal, and the speed regulating for the target fan is completed by using the BIOS when the operating status of the BMC is abnormal. Therefore,an additional single chip microcomputer can be omitted and heat dissipation burdens of a device can be reduced, and furthermore, when the operating status of the BMC is abnormal, the BIOS can still be used for completing the speed regulating for the fan and the heat dissipation performance of the device is effectively ensured. The invention further discloses a speed regulating system and device for the fan and a computer readable storage medium. The technical effects of the speed regulating method for the fan can also be achieved by the speed regulating system and device for the fan and the computer readable storagemedium.

The invention relates to an integrated display unit of a color LED display screen and a manufacture method thereof. The integrated display unit board of the color LED display screen comprises an LED display module and a surface cover base plate, wherein the positions of the surface cover base plate, which correspond to LED wafers of the LED display module, are provided with light outlet holes; a drive IC (integrated circuit) is welded on a drive circuit board, the back surface of a circuit board is connected with the drive circuit board through pin headers and female headers, and the LED wafers are fixed on the front surface of the circuit board; the side wall of every light outlet hole of the surface cover base plate is provided with a high-reflectance diffuse-reflection surface; and the surface cover base plate is fixed on the circuit board, and the light outlet holes of the surface cover base plate are filled with transparent colloid. Due to the high-reflectance diffuse-reflection surfaces of the side walls of the light outlet holes of the surface cover base plate, light reaching the sidewalls of the light outlet holes can be subjected to the diffuse-reflection dodging to significantly improve the light emitting uniformity of LEDs which have three colors of red, green and blue, the light energy usage rate is increased, and the heat dissipation burden is reduced. The integrated display unit board of the color LED display screen has the advantages of large visual angle, low light loss and the like.

The invention discloses a structure based on an NG engine passenger car heating pipeline, which includes a water outlet main pipeline (4), a return water main pipeline (5), an exhaust heater (6), a water outlet main pipeline (4) and a first pipe The water outlet end of the pipeline (15) is connected to the water inlet end of the defroster (1) through the first two-position three-way valve (10), and the water inlet end of the first pipeline (15) is passed through the third two-position three-way valve (12) Connected to the water outlet of the water pump (7); the water inlet of the return main line (5) and the second line (16) passes through the second two-position three-way valve (11) and the defroster (1) The water outlet of the second pipeline (16) and the water outlet of the main return water pipeline (5) are connected to the engine water return port (8) through the tee pipe (13). The invention effectively solves the problem of high engine water temperature in summer operation of the NG engine passenger car, reduces the heat dissipation burden of the engine radiator, makes the engine work more efficient, and ensures the safe and reliable operation of the passenger car.

An LED daylight lamp device capable of directly replacing a fluorescent lamp comprises an LED lamp tube (1) and an external LED power supply (2). Two ends of the LED lamp tube (1) are connected to end covers (3) respectively. Inner ends of two terminals (4) disposed in the same end cover (3) are mutually shorted through a conductive member (5). A DC input end (6) is further disposed on the LED lamp tube (1). A starter interface terminal (7) and a DC output end (8) are disposed on the external LED power supply (2). The DC output end (8) is electrically connected to the DC input end (6) in a removable manner through a power line (9). The external LED power supply (2) can be directly mounted at the position of the original starter, and fit an interface of the original starter. The LED lamp tube (1) can be directly mounted at the position of the original fluorescent lamp. Therefore, the LED power supply (2) and the LED lamp tube (1) can be fast replaced without changing any circuit. In addition, as the LED power supply (2) is externally provided, the LED daylight lamp device easily meets the safety regulations and standards, and the light quality is high.