Abstract: This application discloses a battery box. The battery box includes a controller, a first sensor, and a spraying apparatus and an extinguishing agent pipeline that are located above a battery module. The controller is electrically connected to the first sensor and the spraying apparatus. The spraying apparatus is connected to the extinguishing agent pipeline. The first sensor is configured to detect a temperature of the battery box, and send a first electrical signal to the controller. The controller is configured to control the spraying apparatus to spray an extinguishing agent to the battery module. According to the solution of this application, when thermal runaway occurs in the battery box, and the temperature exceeds a set threshold, a fire may be extinguished in time, to avoid spreading of the fire and reduce a loss.

Abstract: A detection apparatus may include a light source to emit a light pulse sequence, a first scanner and a second scanner disposed in an optical path of the light pulse sequence to change propagation direction of the light pulse sequence. The first scanner alone may be capable of causing an outgoing light beam to scan along a first path, and the second scanner alone may be capable of causing the outgoing light beam to scan along a second path. The first scanner may include a reflector and a first driver; and the second scanner may include a reflective structure and a second driver, the reflective structure including at least two reflective surfaces. The second driver may drive the reflective structure to rotate so that the at least two reflective surfaces are rotated sequentially onto the optical path of the light pulse sequence.

Abstract: A side snowplow including a land leveler, comprising: a rear mounted seat, a hydraulic cylinder I, a pull rod, a snow-pushing board, an oscillating rod, a hydraulic cylinder II, and a front mounted seat. The rear mounted seat is fixed on a rear portion of a rear rack of the land leveler and connected to the pull rod; the hydraulic cylinder I is hingedly connected to the rear mounted seat, and the pull rod; and the snow-pushing board is positioned at a left side or a right side of the land leveler and inclines toward a direction that the land leveler moves, a rear end of the snow-pushing board being connected to the hinge plate II, a front end of the snow-pushing board being connected to the hinge plate III.

Abstract: A side snowplow including a land leveler, comprising: a rear mounted seat (1), a hydraulic cylinder I (3), a pull rod (4), a snow-pushing board (7), an oscillating rod (10), a hydraulic cylinder II (11), and a front mounted seat (12). The rear mounted seat (1) is fixed on a rear portion of a rear rack of the land leveler and connected to the pull rod (4); the hydraulic cylinder I (3) is hingedly connected to the rear mounted seat (1), and the pull rod (4); and the snow-pushing board (7) is positioned at a left side or a right side of the land leveler and inclines toward a direction that the land leveler moves, a rear end of the snow-pushing board (7) being connected to the hinge plate II (6), a front end of the snow-pushing board (7) being connected to the hinge plate III (8).