Abstract: The present application provides a battery module and an electric vehicle. The battery module includes a case, a longitudinal beam, and a tray. The case is provided with at least one exhaust port. The longitudinal beam is disposed in the case and is abutted against a bottom surface of the case to partition accommodating areas in the case on both sides of the longitudinal beam along a width direction. The tray is disposed in one of the accommodating areas and is configured to install a battery cell. A through hole opposite to an end of the battery cell is defined on the tray, the tray is spaced from the bottom surface of the case to define a pressure relief cavity, the through hole and the exhaust port are respectively communicated with the pressure relief cavity.

Abstract: A battery module and an electric vehicle are provided by the present application. The battery module includes a case body and at least one tray; at least one exhaust port is defined in the case body, at least one tray mounting cavity is defined in the case body, and the case body includes a first mounting surface surrounding a periphery of the tray; the tray is disposed in the tray mounting cavity to divide the tray mounting cavity into a cell accommodating cavity located above the tray and a pressure relief cavity located below the tray, the tray is provided with through holes facing battery cells, the pressure relief cavity is communicated with the through holes and the exhaust port, respectively, and the cell accommodating cavity is configured to accommodate the battery cells; the tray includes a second mounting surface, and the second mounting surface abuts against the first mounting surface.

Abstract: An all-plastic miniaturized spray gun including an inner hole of a piston bush with a lower elastic sleeve, upper and lower ends of a piston cavity in an inlet hole of a body are respectively provided with an upper thru-hole and a lower thru-hole. An upper elastic sleeve is disposed above an inner hole of a piston bush in an inlet hole on the body between the upper thru-hole and the lower thru-hole. The upper elastic sleeve is abutted against the piston bush and fixed in the inlet hole of the body. A diversion groove is disposed on an inner wall of the inlet hole of the body. The inlet hole of the body is tapered and corresponds to the upper elastic sleeve. The upper elastic sleeve includes a second piston and a cover, and the lower thru-hole of the body can be opened and closed.

Abstract: An upside-down pump wherein the pump core assembly includes outer and inner pump bodies, the center hole of the piston in the inner pump body adjoins a connecting rod, which fits with the liquid inflow cavity and the outer diameter includes a spring, the outer diameter ring of the valve sleeve includes a side thru-hole, the inner diameter bottom hole of the inner pump includes a second ball and extends from the suction pipe hole on one side of the external pump and fits with the first thru-hole on one side of the connecting sleeve and has an annular clearance, the second thru-hole opposite the first fits with one end of the pipe, the coupling joint has a first ball, the bottom of the connecting sleeve has a base sleeve, the knurled column is inserted into the auxiliary hole in the external pump with a gap, and the thru-holes communicate.

Abstract: A new all-plastic micro miniaturized spray gun. Inner hole of miniaturized spray gun piston bush includes lower elastic sleeve; upper and lower ends of piston cavity in inlet hole of body include upper and lower thru-hole; upper elastic sleeve disposed above inner hole of piston bush in inlet hole on body between upper and lower thru-hole; upper elastic sleeve abutted against piston bush and fixed in inlet hole of body; diversion groove is disposed on inner walls of inlet hole on body; which is tapered and corresponds to upper elastic sleeve; which includes piston and cover; lower thru-hole of body is normally open; when upper thru-hole of body drives piston to move inwardly through wrench, lower elastic sleeve is stressed subject to pressure change, controlling opening or closure of inlet hole on body, and upper elastic sleeve is deformed subject to pressure change, opening or closing upper thru-hole of body.