Power-frequency charging machine internal high-temperature protection method and protection device using same

Abstract

The invention discloses a power-frequency charging machine internal high-temperature protection method and a protection device using same. Temperature induction switches are arranged on the surfaces of devices, needing temperature measurement, in a power-frequency charging machine; the temperature induction switches are connected with a trigger circuit of an I0 end corresponding to a single-chip microcomputer in a power-frequency charging machine, the trigger circuit comprises two divider resistors connected in series, the two divider resistors connected in series are connected between an I0 port on the single-chip microcomputer and the positive pole of a power supply, one pin of each temperature induction switch is grounded, and the other pin of each temperature induction switch is connected between the two divider resistors connected in series; when work temperature in the charging machine is too high, the single-chip microcomputer can enable the power-frequency charging machine to stop work, meanwhile, fault codes of a high-temperature device are displayed on a display screen, overhaul and processing are carried out conveniently in time, larger safety hidden hazards are avoided, and long-time safe operation of the power-frequency charging machine can be effectively guaranteed.

Description

technical field [0001] The invention relates to a power frequency charger, in particular to the technical field of protection when the internal temperature of the power frequency charger is high. Background technique [0002] Power frequency chargers are often used as chargers for electric forklifts and other equipment. Since the output power of electric forklifts and other equipment is relatively large, it is necessary to consider the operating temperature of the relevant components inside the charger and the components’ temperature on the premise of meeting the external dimensions of the charger. Excessive working temperature can easily lead to premature aging or damage of components. Using the single-chip microcomputer in the power frequency charger, the protection method and protection device for the high temperature of the internal components of the power frequency charger are developed, which can effectively guarantee the long-term safe use of the power frequency charg...

AI Technical Summary

Problems solved by technology

[0002] Power frequency chargers are often used as chargers for electric forklifts and other equipment. Since the output power of electric forklifts and other equipment is relatively large, it is necessary to consider the operating temperature of the relevant components inside the charger and the components’ temperature on the premise of meeting the external dimensions of the charger. Too high working temperature can easily lead to premature aging or damage of components

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