Vacuum cleaner and its control method and device

Abstract

The invention discloses a vacuum cleaner and its control method and device. The vacuum cleaner includes a battery, a fan, and a voltage regulation module. The voltage regulation module is used to adjust the voltage at both ends of the battery to supply power to the fan. The method includes: After the power-on operation command, use the PWM control signal of the first preset duty cycle to control the voltage regulation module to make the fan work, and during the operation of the fan, according to at least one of the obtained discharge time, operating current and temperature The two adjust the duty cycle of the PWM control signal, and control the voltage regulation module according to the adjusted PWM control signal. According to the method of the present invention, the duty cycle of the PWM control signal is adjusted in real time according to the working current of the fan, the temperature of the battery and the discharge time, thereby not only improving the working efficiency of the vacuum cleaner, but also preventing the battery from being burned due to excessive temperature. At the same time, it can prolong the working time of the vacuum cleaner and increase the reliability of the system.

Description

technical field [0001] The invention relates to the technical field of vacuum cleaners, in particular to a vacuum cleaner control method, a vacuum cleaner control device and a vacuum cleaner. Background technique [0002] At present, in order to meet the needs of users for portability, more and more vacuum cleaners are equipped with batteries. Generally, it takes 4-10 hours to charge the battery, and the continuous working time is 20-30 minutes, which is relatively short. [0003] Moreover, during the working process of the vacuum cleaner, the temperature of the battery will gradually rise. In order to avoid damage to the battery due to high temperature, an over-temperature protection is generally set. was lowered. [0004] In addition, during the working process of the vacuum cleaner, as the voltage of the battery decreases, the working current of the fan in the vacuum cleaner will gradually decrease, which will reduce the working efficiency of the vacuum cleaner and reduc...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to meet the needs of users for portability, more and more vacuum cleaners are equipped with batteries. Generally, it takes 4-10 hours to charge the battery, and the continuous working time is 20-30 minutes, which is relatively short.

[0003] Moreover, during the working process of the vacuum cleaner, the temperature of the battery will gradually rise. In order to avoid damage to the battery due to high temperature, an over-temperature protection is generally set. was lowered

[0004] In addition, during the working process of the vacuum cleaner, as the battery voltage decreases, the working current of the fan in the vacuum cleaner will gradually decrease, which will reduce the working efficiency of the vacuum cleaner and reduce the dust collection effect.

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