6results about How to "Reduce discharge rate" patented technology

The utility model provides an IGBT driving circuit based on a push-pull structure, and relates to the technical field of power electronic device driving, and the IGBT driving circuit comprises an optocoupler isolation module which is used for receiving a control signal and providing electrical isolation output; the push-pull driving module comprises an NPN type triode Q1 and a PNP type triode Q2 which are complementary and symmetrical; the push-pull driving module is configured as follows: when the optocoupler is conducted, Q1 is saturated and conducted, Q2 is cut off, and a driving current charges an IGBT grid electrode through R2; when the optocoupler is turned off, the Q2 is saturated and turned on, the Q1 is turned off, and the driving current flows through the R3 to discharge the grid electrode of the IGBT. Bidirectional driving current is provided through a push-pull structure, the charge charging and discharging speed of the IGBT grid electrode is increased, the switching loss is reduced, bidirectional driving current is provided through a switch-on resistor R2 and a switch-off resistor R3, the resistance value of the switch-on resistor R2 is selected to be small, the purpose of reducing switch-on loss Eon is achieved, the resistance value of the switch-off resistor R3 is selected to be large, and the purpose of reducing switch-off Vce is achieved.

The utility model discloses a vehicle-mounted TBOX low-voltage starting prevention switching circuit which is composed of a power input circuit, a protection circuit, a decoupling circuit, a fuse, a slow starting circuit, an MOS switching tube circuit, a filter circuit, a decoupling circuit, a low-voltage starting prevention circuit and a system main power supply DC / DC circuit. The protection circuit comprises an electrostatic, filtering and anti-surge circuit; the low-voltage starting prevention circuit is controlled to start by elements such as a Zener diode. When the vehicle-mounted battery supplies power, the circuit is subjected to multiple processing, and when the voltage is lower than a safety threshold value, the TBOX communication terminal is prevented from being started, battery discharging is slowed down, premature over-discharging is avoided, meanwhile, the problems that the input voltage is too low, and a power supply is frequently started for power failure are solved, and stable operation of the vehicle-mounted battery and a TBOX system is effectively guaranteed.

This utility model relates to the field of adhesive processing technology and discloses a corrugated paper adhesive processing device, including a processing tank. A feed pipe is fixedly installed on the upper part of one side of the inner wall of the processing tank. A drive pipe is vertically rotatably connected inside the processing tank. An agitator is fixedly installed at the lower end of the drive pipe. Air outlets are equidistantly opened on the outer side of the agitator. This utility model controls the operation of an air pump. Through the combination of the air outlet, air vent, and air port, airflow can be introduced into the drive pipe and discharged through the air outlets on the outer side of the agitator. This can agitate the raw materials in the processing tank, further improving the uniform mixing efficiency of the raw materials. When it is necessary to discharge the adhesive from the processing tank, the air vent is closed by a first solenoid valve, and the discharge pipe is opened by a second solenoid valve. The air pump continues to operate. As the air pressure inside the processing tank increases, the discharge speed of the adhesive can be increased, avoiding the adhesive from becoming viscous and resulting in low discharge efficiency.

The utility model discloses a wheel hub and a vehicle, and relates to the technical field of wheel hub motors, in particular to the wheel hub and the vehicle, comprising a middle cavity arranged in an internal cavity of the wheel hub and separated and sealed from the internal cavity through an elastic diaphragm assembly; according to the hub and the vehicle, the middle cavity is isolated in the inner cavity of the hub through the elastic diaphragm assembly, the middle cavity is directly communicated with the external space, pressure balance is achieved between the inner cavity and the middle cavity as well as between the inner cavity and the external space through elastic deformation of the diaphragm assembly, and under the action of the diaphragm assembly, pressure balance is achieved. The inner cavity is not directly communicated with the external space, water is effectively prevented from entering the motor, the exhaust hole is formed in the position of the maximum turning radius of the middle cavity, impurities in the middle cavity can be discharged through the exhaust hole by means of centrifugal force generated when the hub rotates, the exhaust hole is prevented from being blocked, and then air pressure balance inside and outside the hub is guaranteed.

This utility model belongs to the field of phthalic anhydride production technology, specifically relating to a waste heat recovery and utilization device for a phthalic anhydride production apparatus. It includes a recovery tank, a drain outlet fixedly connected to the lower end of the recovery tank, an air inlet fixedly connected to the left side of the recovery tank, a water tank fixedly connected to the upper end of the recovery tank, a purification tank fixedly connected to the upper end of the water tank, a waste heat recovery and utilization mechanism in the water tank, a purification mechanism inside the purification tank, a discharge hood fixedly connected to the upper end of the purification tank, and an exhaust port fixedly connected to the upper end of the purification tank. This utility model utilizes a bent pipe passing through the interior of the water tank to transport heat into the water tank, thereby increasing heat utilization. The bent pipe also reduces the heat emission rate, prolonging the heat residence time inside the water tank and increasing the heating effect. The air inlet hood further enhances the heat transport and emission into the bent pipe, maximizing heat utilization.