Abstract: A riding lawn mower includes: a seat; a frame; a mowing element; a deck surrounding and forming a mowing space for accommodating at least part of the mowing element; and a first motor for driving the mowing element to rotate. The first motor includes a rotor assembly including a rotor shaft enabled to rotate about a rotation axis and a stator assembly, a motor housing surrounding and forming an accommodation cavity for accommodating at least part of the stator assembly. The rotor shaft passes through the motor housing in a direction of the rotation axis and is at least partially located outside the motor housing; the deck is provided with a first through hole for the first motor to pass through so that the motor housing is at least partially located in the mowing space. The first motor of the riding lawn mower has a good cooling effect.

Abstract: A method, system, device, and medium for recharging a battery module are disclosed. The method comprises: identifying initial rechargeable batteries within the battery module; selecting from the initial rechargeable batteries, a reference rechargeable battery that satisfies preset charging and discharging conditions, and designating the remaining batteries of the initial rechargeable batteries as target rechargeable batteries; and determining a target capacity for each of the target rechargeable batteries based on the historical charging and discharging parameters of the reference rechargeable battery and each of the target rechargeable batteries; establishing a recharge termination condition for each of the target rechargeable batteries based on the target capacity; and recharging each of the target rechargeable batteries in accordance with its respective recharge termination condition. Considering the unique conditions of each battery, settings for recharge are individualized.

Abstract: A self-propelled device includes a cutting assembly for cutting vegetation; a body for supporting the cutting assembly; and a traveling system for driving the body to move. The traveling system includes at least a traveling wheel; and a wheel hub motor integrally disposed in the traveling wheel. Along an axial direction of the traveling wheel, the first external dimension of the self-propelled device is greater than or equal to 0.2 m and less than or equal to 1.5 m. Along a direction perpendicular to the axial direction of the traveling wheel, the second external dimension of the self-propelled device is greater than or equal to 0.5 m and less than or equal to 1.5 m.

Abstract: A riding lawn mower includes a seat, a frame, a mowing element, a deck surrounding, and forming a mowing space for accommodating at least part of the mowing element, and a first motor for driving the mowing element to rotate. The first motor includes a rotor assembly having a rotor shaft enabled to rotate about a rotation axis and a stator assembly, and a motor housing surrounding and forming an accommodation cavity for accommodating at least part of the stator assembly. The rotor shaft passes through the motor housing in a direction of the rotation axis and is at least partially located outside the motor housing. The deck is provided with a first through hole for the first motor to pass through so that the motor housing is at least partially located in the mowing space. The first motor of the riding lawn mower has a good cooling effect.

Abstract: The invention discloses method and apparatus for operation and maintenance of a battery and an electronic device. The method includes: performing a charging/discharging process on a to-be-analyzed battery cluster, and determining key battery parameters (KBP) of a plurality of cells in the battery cluster; determining whether the battery cluster is abnormal depending on whether the KBPs of the cells in the battery cluster exceed a normal range; and performing operation and maintenance on the battery cluster in a case that the battery cluster is abnormal. The internal resistance, the capacity parameter, and the self-discharge parameter of the cells are used as the KBPs of the cells. Based on the KBPs, whether the cells are abnormal can be determined more accurately, and the cause of the abnormality can be determined. Accordingly, more accurate operation and maintenance can be subsequently realized for the battery cluster when required.

Abstract: A riding lawn mower includes: a seat; a frame; a mowing element; a deck surrounding and forming a mowing space for accommodating at least part of the mowing element; and a first motor for driving the mowing element to rotate. The first motor includes a rotor assembly including a rotor shaft enabled to rotate about a rotation axis and a stator assembly, a motor housing surrounding and forming an accommodation cavity for accommodating at least part of the stator assembly. The rotor shaft passes through the motor housing in a direction of the rotation axis and is at least partially located outside the motor housing; the deck is provided with a first through hole for the first motor to pass through so that the motor housing is at least partially located in the mowing space. The first motor of the riding lawn mower has a good cooling effect.