3results about How to "Reduce space loss" patented technology

This invention provides a bed sheet changing device for bone marrow aspiration patients, comprising a bed frame, a drive mechanism, and a lifting mechanism. The bed frame has an internal cavity, and a strip-shaped groove is formed at the top of the bed frame. A support belt is positioned at the top of the strip-shaped groove, and rods are positioned on both sides of the support belt. The two rods can respectively roll up both sides of the support belt to the underside of the support belt. Moving blocks are slidably installed on both sides of the support belt within the cavity. Each of the two moving blocks has a bearing plate on its top, and the two bearing plates are connected to their adjacent rods through connecting parts. The drive mechanism is used to drive the two moving blocks to move closer to or away from each other. The lifting mechanism is used to lift the support belt above the bed frame. This invention utilizes the drive mechanism in combination with the lifting mechanism to simultaneously raise or lower the support belt when unfolding or retracting it. This facilitates quick bed sheet changing for medical staff, eliminating the need for the patient to get out of bed, effectively reducing patient discomfort and the workload of medical staff.

The utility model discloses an offset type battery cell and cover plate assembly, and belongs to the technical field of lithium battery manufacturing. The offset type battery cell comprises a cover plate assembly and a laminated core, wherein a tab of the laminated core is arranged on one side of the laminated core in an offset manner; the cover plate assembly comprises a cover plate main body and a cover plate connecting sheet, the cover plate main body is respectively provided with a terminal connecting hole and a sealing hole, an external terminal assembly is arranged in the terminal connecting hole, and the sealing hole is arranged corresponding to the position of a tab of a battery cell; the cover plate connecting sheet is positioned on the inner side of the cover plate main body, two ends of the cover plate connecting sheet respectively extend to the terminal connecting hole and the sealing hole, the outer side of one end of the cover plate connecting sheet is connected with a terminal assembly positioned in the terminal connecting hole, and the inner side of the other end of the cover plate connecting sheet is connected with a tab of a battery cell. Compared with a traditional connection mode from the battery cell to the tab, the scheme adopts an offset connection mode, so that the height between the tab and the cover plate terminal assembly is reduced, and the internal space loss of the battery cell is reduced.

The utility model discloses a kind of roll core and battery, it is related to battery technical field.The roll core includes positive sheet, negative sheet and diaphragm, diaphragm is located between positive sheet and negative sheet, positive sheet, diaphragm and negative sheet are sequentially laminated and wound to form roll core, roll core is divided into first half area and second half area on the plane where the winding direction of roll core is located.In the first end in the height direction of roll core: the first end of positive sheet located in second half area protrudes the first end of positive sheet located in first half area, the first end of negative sheet located in second half area protrudes the first end of negative sheet located in first half area;Positive lug is connected on the first end of positive sheet located in first half area;Negative lug is connected on the first end of negative sheet located in first half area.Positive sheet, diaphragm and negative sheet located in second half area can fill part of pole lug reserved accommodation area of shell, and the energy density of the roll core is improved.