Abstract: The present invention relates to negative electrode carbon materials for lithium-ion batteries, and particularly to a lithium-ion battery negative electrode active material, a lithium-ion battery negative electrode, a lithium-ion battery, a battery pack and a battery-powered vehicle. In a pore structure, measured by N2 adsorption and desorption, of the lithium-ion battery negative electrode carbon particles, by using the total pore volume measured by BJH having a pore size of 2-200 nm as the reference, the sum of the volumes of pores with a pore size of 2-10 nm is 2-10%, the sum of the volumes of pores with a pore size of 10-100 nm is 30-65%, and the sum of the volumes of pores with a pore size of 100-200 nm is 30-65%, and the carbon particles have a BET specific surface area of 0.9-1.9 m2/g.

Abstract: Disclosed herein is a sealing device disposed between a vehicle door and a vehicle body and a vehicle door sealing rubber strip thereof. The sealing rubber strip is sleeved on a door pipe of the vehicle door. The vehicle door sealing rubber strip is an annular rubber body constituted by a drain segment and a non-drain segment. The annular rubber body includes a hollow rubber ring made of foaming rubber and a groove-shaped rubber ring made of compacted solid rubber and provided with a pipe body mounting groove at the inner side of the groove-shaped rubber ring. An air hole is provided in the hollow rubber ring, and a small water flowing trench is provided at the bottom surface of the pipe body mounting groove of the groove-shaped rubber ring. A fixing groove with a broad bottom and a narrow opening is provided on one external side of the groove-shaped rubber ring.

Abstract: A roof for a recreational vehicle may include a roof frame made by bending circular tubes and a roof plate. The roof plate is connected to the roof frame via a roof plate sealing rubber strip and a frame sealing rubber strip. The roof plate sealing rubber strip covers the peripheral edge of the roof plate through a groove formed at one side of the roof plate sealing rubber strip, and the other side of the roof plate sealing rubber strip is inserted into a slot of the top of the frame sealing rubber strip and is clamped by lips on both sides of the slot, and the frame sealing rubber strip is adhered onto the roof frame.

Abstract: Disclosed herein is a vehicle door with an irregular-circular frame for a recreational vehicle. A door window glass of the vehicle door includes a fixed glass (2) and a movable glass (1). The fixed glass (2) is fixedly installed in a portion of the door window surrounded by a lower door body (6), an outer frame (5) and a movable glass guide rail (9). The movable glass guild rail (9) has an arc rail. The movable glass (1) is installed on the lower door body (6) at the center of the arc of the movable glass guide rail (9) via a shaft sleeve and a shaft (4). A lock member (3) with a lock pin is installed on the upper part of the portion where the movable glass (1) engages with the movable glass guide rail (9). A stop block for adjusting the opening degree of the movable glass and stopping the lock pin of the lock member (3) is provided on the movable glass guide rail (9).

Abstract: Disclosed herein is a vehicle door with an irregular-circular frame for a recreational vehicle. A door window glass of the vehicle door includes a fixed glass (2) and a movable glass (1). The fixed glass (2) is fixedly installed in a portion of the door window surrounded by a lower door body (6), an outer frame (5) and a movable glass guide rail (9). The movable glass guild rail (9) has an arc rail. The movable glass (1) is installed on the lower door body (6) at the centre of the arc of the movable glass guide rail (9) via a shaft sleeve and a shaft (4). A lock member 3 with a lock pin is installed on the upper part of the portion where the movable glass 1 engages with the movable glass guide rail (9). A stop block for adjusting the opening degree of the movable glass and stopping the lock pin of the lock member (3) is provided on the movable glass guide rail (9).

Abstract: Disclosed herein is a sealing device disposed between a vehicle door and a vehicle body and a vehicle door sealing rubber strip thereof. The sealing rubber strip is sleeved on a door pipe of the vehicle door. The vehicle door sealing rubber strip is an annular rubber body constituted by a drain segment and a non-drain segment. The annular rubber body includes a hollow rubber ring made of foaming rubber and a groove-shaped rubber ring made of compacted solid rubber and provided with a pipe body mounting groove at the inner side of the groove-shaped rubber ring. An air hole is provided in the hollow rubber ring, and a small water flowing trench is provided at the bottom surface of the pipe body mounting groove of the groove-shaped rubber ring. A fixing groove with a broad bottom and a narrow opening is provided on one external side of the groove-shaped rubber ring.

Abstract: Herein disclosed is a roof for a recreational vehicle including a roof frame made by bending circular tubes and a roof plate. The roof plate is connected to the roof frame via a roof plate sealing rubber strip and a frame sealing rubber strip. The roof plate sealing rubber strip covers the peripheral edge of the roof plate through a groove formed at one side of the roof plate sealing rubber strip, and the other side of the roof plate sealing rubber strip is inserted into a slot of the top of the frame sealing rubber strip and is clamped by lips on both sides of the slot, and the frame sealing rubber strip is adhered onto the roof frame. Compared with a conventional roof for a recreational vehicle, such roof for a recreational vehicle according to the present invention can solve the problem that the roof frame made of circular tubes and the roof plate cannot be flushed with each other and the problem of the leakage of rain.