Bus discharge control method for quick restart of power supply

Abstract

The invention discloses a bus discharge control method for rapidly restarting a power supply, and the method comprises a bus discharge control circuit and operation steps. The bus discharge control circuit comprises a key switch S connected with a power supply, a bus circuit connected with one end of the key switch S, an input enabling circuit connected with one end of the key switch S, and a semiconductor switch circuit connected with the key switch S and the bus circuit and used for starting a dormant state of the control system. Signals of the input enabling circuit are provided by a system MCU. The system is simple in structure, the key switch controls the power supply to be restarted to achieve system dormancy, no power consumption is achieved, the input key switch is adopted for awakening, application is simple, the power supply has the enabling function, the bus and power supply input connection and disconnection are controllable, and the problem of quick starting caused by integrated bus discharging is solved.

Description

technical field [0001] The invention relates to the field of electric forklift controller control power supply, in particular to a bus discharge control method for quick restart of power supply. Background technique [0002] Restart is a function of the electric forklift controller to control the power supply. When the forklift is not operated for a long time, the controller is required to standby and sleep, and stop all peripherals to achieve the purpose of reducing power consumption and keeping the vehicle in a safe state. At this time, the control The switch key is always closed, disconnecting and closing the key switch is a wake-up operation. The low-voltage low-power controller integrates the pre-charging and discharging of the busbar inside. discharge. The standby dormancy function adopts the method of turning off the control power supply, which is safer and lower power consumption than the method of controlling the MCU, and is awakened by the key switch, which is the...

AI Technical Summary

Problems solved by technology

When there is no bus discharge function, there is no defect in the circuit; after adding the bus discharge function, when waking up, because the front power supply has stopped working, the bus cannot be discharged, so the power supply cannot be started, and only the circuit itself is used for discharge. In the application, it cannot be restarted quickly. When the MCU is in sleep mode and the peripherals are stopped, the control power supply of the system works normally. After receiving WKUP, the normal mode is restored. Some functions of the MCU and the power supply are still working, and there is always power consumption.

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