Abstract: Disclosed are a voltage regulation circuit, a power supply module, a vehicle, and a control method. The voltage regulation circuit includes a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a control chip and an inductor; and an output terminal of the control chip is electrically connected to a gate electrode of the first NMOS transistor, a gate electrode of the second NMOS transistor, and a gate electrode of the third NMOS transistor, respectively; where a source electrode of the first NMOS transistor is electrically connected to a second terminal of the inductor. According to the technical solution of the present disclosure, at least a problem of a poor voltage regulation effect of an existing transformer may be solved.

Abstract: The present application provides a battery including a lower case, a battery cell, a conductive member, an upper cover and a conductor terminal; the lower case is provided with an accommodating cavity with an opening, the battery cell is disposed within the accommodating cavity, the conductive member is electrically connected with the battery cell, the upper cover is covered on the lower case and seals the opening, the upper cover is provided with a through hole, and the conductive member passes through the through hole and extends out of the accommodating cavity; the conductor terminal is detachably disposed on the conductive member; the conductor terminal includes a connection portion and an extension portion, which are located at two ends of the conductor terminal, respectively, the connection portion is inserted into the through hole, and the extension portion extends in a direction away from the upper cover.

Abstract: The present application provides a battery cell assembly and a battery pack. The battery cell assembly includes a bracket and several battery cell modules which are electrically connected with one another, where the bracket is arranged between two adjacent battery cell modules, the battery cell module comprises a plurality of single battery cells which is arranged side by side, and the plurality of single battery cells is electrically connected with one another. The present application provides a battery cell assembly and a battery pack, which can replace a lead-acid battery and meet the use requirements of supplying power to an automobile start-stop system.

Abstract: A manufacturing method of precision machine tool bearing with high precision stability includes the procedures: (1) microstructural stabilization of bearing body: by cold ring rolling, two liquid quenching, ultrasonic assisted multiple cryo-tempering treatment and stress ageing treatment, the bearing body with high microstructure stability can be obtained; (2) precision machining; (3) internal stress relaxation of bearing body: after precision machining, by executing magnetic treatment on the bearing body, bearing ring with high microstructure stability and low internal stresses can be obtained; and (4) bearing assembly: finally precision machine tool bearing with high precision stability can be obtained.

Abstract: This invention relates to a combined ring rolling method for spherical valve body, which has the following procedures: 1) design for ring blank by computing ring blank volume and selecting reasonable rolling ratio according to the dimensions of forged ring; 2) design for rolling gap which includes the shapes and dimensions of working surfaces of main roll, mandrel and passive rolls according to the dimensions of ring blank and forged ring, the stable deformation condition of combined ring rolling and structure requirement of rolling equipment; 3) rolling forming with three stages of surface cross rolling, ring rolling and shaping by controlling of feeding speed of main roll and working positions of passive rolls. This invention has the technical economical advantages of low consumptions of energy and materials, high productivity and low production cost.

Abstract: A manufacturing method of precision machine tool bearing with high precision stability includes the procedures: (1) microstructural stabilization of bearing body: by cold ring rolling, two liquid quenching, ultrasonic assisted multiple cryo-tempering treatment and stress ageing treatment, the bearing body with high microstructure stability can be obtained; (2) precision machining; (3) internal stress relaxation of bearing body: after precision machining, by executing magnetic treatment on the bearing body, bearing ring with high microstructure stability and low internal stresses can be obtained; and (4) bearing assembly: finally precision machine tool bearing with high precision stability can be obtained.

Abstract: This invention relates to a combined ring rolling method for spherical valve body, which has the following procedures: 1) design for ring blank by computing ring blank volume and selecting reasonable rolling ratio according to the dimensions of forged ring; 2) design for rolling gap which includes the shapes and dimensions of working surfaces of main roll, mandrel and passive rolls according to the dimensions of ring blank and forged ring, the stable deformation condition of combined ring rolling and structure requirement of rolling equipment; 3) rolling forming with three stages of surface cross rolling, ring rolling and shaping by controlling of feeding speed of main roll and working positions of passive rolls. This invention has the technical economical advantages of low consumptions of energy and materials, high productivity and low production cost.