Abstract: A multifunctional comprehensive training device capable of being grasped stably is provided. The multifunctional comprehensive training device capable of being grasped stably includes symmetrical front vertical pipes and symmetrical selected irons, where the front vertical pipes are provided vertically; cable mechanisms are respectively provided on the front vertical pipes; the cable mechanism includes a steel rope and a bracket; the steel rope includes a first end configured for a cable machine exercise, and a second end connected to a Smith mechanism through each of the selected irons; the Smith mechanism includes a guide post, a suspension rack, and an adjusting plate; the guide post is slidably connected to a moving rack; a barbell bar is horizontally provided at an upper end of the moving rack; the barbell bar is connected to a hook rack.

Abstract: Disclosed are a current collector, an electrode plate, and a battery. The current collector includes a substrate and a conductive coating layer coated on the surface of the substrate, where the conductive coating layer includes alternately arranged raised parts and recessed parts. A plurality of recessed parts are arranged on the conductive coating layer, which may increase the component of the coated active material without increasing the overall thickness, significantly increase the bonding strength of the active material and the conductive coating layer, and improve the conductivity; it can effectively inhibit the thickness expansion of the electrode plate, and solve the problem that the bonding strength of the carbon-containing layer and the active material in the prior art needs to be improved.

Abstract: The present disclosure provides a battery including a housing enclosed to form a chamber and including a first side plate; a cell located in the chamber, a side of the cell facing the first side plate being provided with a first tab; a first transfer member electrically connected with the first tab and disposed between the first side plate and the cell; and a first connector including a first connection sheet connected with the first transfer member and a fourth connection sheet connected with a side of the first tab facing away from the cell. The present disclosure can improve the battery performance such as stability and safety.