Abstract: Provided are a fan assembly and a vacuum cleaner having same. The fan assembly includes a housing, an impeller assembly, and a driving member. At least part of the impeller assembly is accommodated in the housing. The impeller assembly includes a plurality of impellers connected in series in an airflow flowing direction of the fan assembly. The driving member is configured to drive the plurality of impellers to rotate.

Abstract: Provided are a fan assembly and a vacuum cleaner having same. The fan assembly includes a housing, an impeller assembly, and a driving member. At least part of the impeller assembly is accommodated in the housing. The impeller assembly includes a plurality of impellers connected in series in an airflow flowing direction of the fan assembly. The driving member is configured to drive the plurality of impellers to rotate.

Abstract: Provided are a fan assembly and a vacuum cleaner having same. The fan assembly includes a housing, an impeller assembly, and a driving member. At least part of the impeller assembly is accommodated in the housing. The impeller assembly includes a plurality of impellers connected in series in an airflow flowing direction of the fan assembly. The driving member is configured to drive the plurality of impellers to rotate.

Abstract: The present invention provides a control method and apparatus for an electric tool, and further provides an electronic tool, which relates to the field of automatic control of electric tools. The method comprises: Obtaining parameters characterizing an output shaft load during a running process of an electric tool; calculating the average values of the parameters characterizing an output shaft load according to a composite average algorithm, wherein the composite average algorithm comprises a combination of at least two average algorithms; calculating slope values of the parameters characterizing the output shaft load according to the average values of the parameters characterizing the output shaft load; and interrupting torque output of the electric tool according to the slope values of the parameters characterizing the output shaft load.

Abstract: A charger for a vacuum cleaner and a fast charging controlling method thereof are provided. The charger includes: a plurality of first charging interfaces; a rectifying device configured to rectify an alternating current to output a direct current; a plurality of charging controlling devices each connected between an output end of the rectifying device and a first charging interface correspondingly; and a main controlling device configured to communicate with each of the first charging interfaces respectively to identify whether any first charging interface is connected with a device to be charged acquire a parameter of the device to be charged if identifying that a first charging interface is connected with the device to be charged, and perform charging control on the device to be charged through a charging controlling device corresponding to the first charging interface according to the parameter of the device to be charged.

Abstract: The present invention provides a control method and apparatus for an electric tool, and further provides an electronic tool, which relates to the field of automatic control of electric tools. The method comprises: Obtaining parameters characterizing an output shaft load during a running process of an electric tool; calculating the average values of the parameters characterizing an output shaft load according to a composite average algorithm, wherein the composite average algorithm comprises a combination of at least two average algorithms; calculating slope values of the parameters characterizing the output shaft load according to the average values of the parameters characterizing the output shaft load; and interrupting torque output of the electric tool according to the slope values of the parameters characterizing the output shaft load.

Abstract: A charger for a vacuum cleaner and a fast charging controlling method thereof are provided. The charger includes: a plurality of first charging interfaces; a rectifying device configured to rectify an alternating current to output a direct current; a plurality of charging controlling devices each connected between an output end of the rectifying device and a first charging interface correspondingly; and a main controlling device configured to communicate with each of the first charging interfaces respectively to identify whether any first charging interface is connected with a device to be charged acquire a parameter of the device to be charged if identifying that a first charging interface is connected with the device to be charged, and perform charging control on the device to be charged through a charging controlling device corresponding to the first charging interface according to the parameter of the device to be charged. .