Electric lawn mower

Abstract

The invention discloses an electric lawn mower. The electric lawn mower is provided with a power head, wherein the power head comprises a housing, and at least one battery pack and a motor are arranged in the housing; a plurality of battery pack air inlets are formed in any battery pack, and the housing is provided with first air inlets corresponding to all the battery pack air inlets and allowingcooling air to enter the housing; an air guide pipe for guiding external cooling air into any battery pack is arranged between any battery pack air inlet and the corresponding first air inlet; and abattery pack air outlet allowing cooling airflow after cooling a cell in any battery pack to flow to the motor is formed in the bottom of the battery pack. The electric mower can greatly improve the cooling effect of the battery packs and increase the utilization rate of the cooling air, thereby solving the problem of shutdown caused by over-temperature protection when the environmental temperature is high in the prior art. The arrangement manner can improve the working efficiency of the mower, prolong the cycle life of the cells and increase the capacity utilization rate of the cells.

Description

technical field [0001] The invention relates to the technical field of gardening tools, in particular to an electric lawn mower. Background technique [0002] In the electric lawn mowers of the prior art, for the cooling of the key components involved in the power head, that is, the battery pack, the controller and the mowing motor, the solution of adding an impeller at the output end of the mowing motor is mostly adopted. , The adsorption force generated by the impeller and the cutting blade sucks the cooling air from the air inlet, and then flows over the surface of the battery pack, the controller and the mowing motor, and achieves the cooling effect by taking away the heat dissipated. However, the above cooling technologies have the following problems: the utilization rate of the cooling air is low, and the cooling effect of the battery pack is generally poor. In addition, the poor cooling effect of the battery pack will also lead to problems such as short cycle life of...

AI Technical Summary

Problems solved by technology

However, the above-mentioned cooling technology has the following problems: the utilization rate of the cooling air is low, and the cooling effect of the battery pack is generally not good. As a result, the power supply cannot be normal, so that the lawn mower stops working; in addition, the poor cooling effect of the battery pack will also lead to problems such as short battery cycle life and low capacity utilization, which will not only increase the cost of use, but also reduce work efficiency

[0003] Therefore, how to avoid affecting the normal use of the lawn mower due to the poor cooling effect of the battery pack is a technical problem that those skilled in the art need to solve at present.

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