Abstract: A battery housing includes a plate body. The plate body has multiple folding portions and multiple side plates connected by the folding portions. The plate body is folded along the folding portions such that the side plates are connected to create an accommodating space for accommodating an electrochemical unit inside the middle housing.

Abstract: The methods and systems for panorama stitching of trailer images provided by the present invention relates to the field of image processing, comprising: receiving, by a first on-board device, a first image data sent by a camera disposed on the left of the carriage, a second image data sent by a camera disposed on the right of the carriage, and a third image data sent by a camera disposed at the back of the carriage in real time; respectively analyzing the first image data, the second image data and the third image data utilizing an opencv algorithm, to obtain intrinsic parameters, extrinsic parameters and distortion parameters of the cameras; respectively acquiring feature points of the seventh image data, the eighth image data and the ninth image data utilizing a scale invariant algorithm to obtain a set of feature points; and stitching the first image data, the second image data and the third image data according to the set of the feature points to generate a first stitched image; utilizing an H.

Abstract: The methods and systems for panorama stitching of trailer images provided by the present invention relates to the field of image processing, comprising: receiving, by a first on-board device, a first image data sent by a camera disposed on the left of the carriage, a second image data sent by a camera disposed on the right of the carriage, and a third image data sent by a camera disposed at the back of the carriage in real time; respectively analyzing the first image data, the second image data and the third image data utilizing an opencv algorithm, to obtain intrinsic parameters, extrinsic parameters and distortion parameters of the cameras; respectively acquiring feature points of the seventh image data, the eighth image data and the ninth image data utilizing a scale invariant algorithm to obtain a set of feature points; and stitching the first image data, the second image data and the third image data according to the set of the feature points to generate a first stitched image; utilizing an H.

Abstract: A multi-launcher firearm includes a firearm body comprising a plurality of ammunition launchers for storing different types of ammunitions having different ranges in the respective ammunition launchers, an input device connected to the firearm body for receiving a designation inputted by a user, and a controller mounted on the firearm body and respectively connected to each ammunition launcher for receiving the designation from the input device and then controlling the ammunition launcher correspondent to the designation to launch out the ammunition stored therein. The ammunition in each ammunition launcher comprises a plurality of rocket projectiles. All the rocket projectiles stored in the ammunition launcher share an identical diameter.

Abstract: A multi-launcher firearm includes a firearm body comprising a plurality of ammunition launchers for storing different types of ammunitions having different ranges in the respective ammunition launchers, an input device connected to the firearm body for receiving a designation inputted by a user, and a controller mounted on the firearm body and respectively connected to each ammunition launcher for receiving the designation from the input device and then controlling the ammunition launcher correspondent to the designation to launch out the ammunition stored therein. The ammunition in each ammunition launcher comprises a plurality of rocket projectiles. All the rocket projectiles stored in the ammunition launcher share an identical diameter.

Abstract: A magazine comprises: a shell, having an inner space in a shape of cylinder, wherein said shell has an opening, and bullets enters into or gets out of said magazine via said opening; a bullet limiting column, provided in said inner space, and coaxial with said inner space, wherein a bullet space is defined between said bullet limiting column and an inner wall of said shell; a bullet guide rail, winding around said bullet limiting column spirally, wherein a motion trail for said bullets to move along is defined; and a main spring, provided in said motion trail, wherein a first end of said main spring extends to said opening, when said bullets are put in said magazine, said bullets compress said main spring to said second end of said inner space, when said bullets are needed, said main spring pushes said bullets out of said magazine.

Abstract: A dump magazine with a high capacity includes: a bullet container for containing bullets, wherein a bullet outlet is provided on said bullet container; a guide provided in said bullet container for forming a spiral tunnel extending to a center of said bullet container for storing bullets; the bullets are filled into said spiral tunnel from said bullet outlet to an end thereof; and a spiral spring device for pushing the bullets towards said bullet outlet, wherein said spiral spring device is mounted aside said guide; a pushing device is mounted on said spiral spring device and extends into said spiral tunnel; when the bullets are filled into said spiral tunnel through said bullet outlet, said pushing device moves along said spiral tunnel in such a manner that said spiral spring device is compressed.

Abstract: A dump magazine with a high capacity includes: a bullet container for containing bullets, wherein a bullet outlet is provided on said bullet container; a guide provided in said bullet container for forming a spiral tunnel extending to a center of said bullet container for storing bullets; the bullets are filled into said spiral tunnel from said bullet outlet to an end thereof; and a spiral spring device for pushing the bullets towards said bullet outlet, wherein said spiral spring device is mounted aside said guide; a pushing device is mounted on said spiral spring device and extends into said spiral tunnel; when the bullets are filled into said spiral tunnel through said bullet outlet, said pushing device moves along said spiral tunnel in such a manner that said spiral spring device is compressed.

Abstract: A magazine comprises: a shell, having an inner space in a shape of cylinder, wherein said shell has an opening, and bullets enters into or gets out of said magazine via said opening; a bullet limiting column, provided in said inner space, and coaxial with said inner space, wherein a bullet space is defined between said bullet limiting column and an inner wall of said shell; a bullet guide rail, winding around said bullet limiting column spirally, wherein a motion trail for said bullets to move along is defined ; and a main spring, provided in said motion trail, wherein a first end of said main spring extends to said opening, when said bullets are put in said magazine, said bullets compress said main spring to said second end of said inner space, when said bullets are needed, said main spring pushes said bullets out of said magazine.