Abstract: A battery test assembly includes: a positive electrode probe having a first end configured to be electrically connected to a positive electrode of the battery having a first end configured to be electrically connected to a negative electrode of the battery electrically connected to each of a second end of the positive electrode probe and a second end of the negative electrode probe is configured to test a voltage between the positive electrode and the negative electrode of the battery by testing a voltage between the second end of the positive electrode probe and the second end of the negative electrode probe.

Abstract: The present application is applicable to the field of battery production and manufacturing. It proposes a rotary infiltration apparatus for a columnar battery cell, including a battery placement mechanism and a driving mechanism, where the battery placement mechanism is configured to place a plurality of columnar battery cells to be infiltrated in an array, and the driving mechanism is connected with the battery placement mechanism in a transmission way and drives the battery placement mechanism to drive the columnar battery cell to rotate around its cylindrical axis. The present application significantly shortens time required for battery infiltration and effectively improves production efficiency of the columnar battery cell.

Abstract: A separator inlcudes a base film and at least one coating layer. The base film has an upper surface and a lower surface, and has a first direction. The upper surface includes a first edge portion and a second edge portion in the first direction, and the lower surface includes a third edge portion and a fourth edge portion in the first direction. The at least one coating layer is provided at at least one of the first edge portion, the second edge portion, the third edge portion, and the fourth edge portion.

Abstract: Various embodiments can reduce variance in a target metric (e.g., experiment outcome). Embodiments can use historical pre-experiment outcomes to predict a metric (forecasts) that is expected for a future measurement time. The forecasts can then be used as a covariate to reduce the variance of the target metric. When predicting forecasts, various embodiments can use an automation pipeline that can generate better and quicker forecasts. When there are multiple covariates that may be considered to reduce variance in the target metric, various embodiments can use a closed from solution for determining optimal coefficient of each covariate.

Abstract: Disclosed are a separation device (100) and a material separation method. The separation device (100) includes a rack (10), a turntable (20), and a magnetic element (30). The turntable (20) is rotatably disposed on the rack (10). The magnetic element (30) is disposed on the turntable (20).

Abstract: An electrode plate slitting cutter holder includes a frame, an upper cutter holder, and a lower cutter holder. Two ends of the upper cutter holder are rotatably connected to the frame. The lower cutter holder is located below the upper cutter holder and arranged parallel to the upper cutter holder. Two ends of the lower cutter holder are rotatably connected to the frame. One of the upper cutter holder and the lower cutter holder is provided with a double-edged cutter, and another one of the upper cutter holder and the lower cutter holder is provided with a cutter groove corresponding to a position of the double-edged cutter and configured to cooperate with the double-edged cutter.

Abstract: The present application relates to a cell charging and discharging tray, a cell ageing device and a cell ageing method, wherein the tray includes an insulating base component for accommodating cells and a conductive component for realizing sequential parallel connection of a type-A cell and type-B cells, and is adapted for simultaneously ageing one type-A cell and a plurality of type-B cells, where a potential of the type-A cell is higher than that of each type-B cell. The tray provided by the present application adopts a design that the base component is separated from the conductive component, so that the ageing of a high-potential cell will be completed after low-potential cells are aged, and the service life of the high-potential cell is not affected, so shipment may be performed after self-discharge for selecting bad products is completed, which is conducive to improving the manufacturing efficiency.

Abstract: This application relates to the field of battery manufacturing technologies, and in particular, to an electrolyte injection apparatus and an electrolyte injection method. The electrolyte injection apparatus includes an electrolyte injection assembly, a gas extraction assembly, and a gas injection assembly. The electrolyte injection assembly has an electrolyte injection end, the electrolyte injection end being configured to communicate with an inner cavity of the housing. The gas extraction assembly has a gas extraction end, the gas extraction end being configured to communicate with the inner cavity of the housing. The gas injection assembly has a gas inlet and a gas injection end, the gas inlet being configured to communicate with a gas storage container, and the gas injection end being configured to communicate with the inner cavity of the housing, where the gas storage container stores target gas, the target gas being soluble in the electrolyte.

Abstract: A battery cell includes: a shell, including a first wall; an electrode assembly, disposed inside the shell; and a terminal assembly, including an electrode terminal and an elastic member. The electrode terminal includes a fixed portion for electrical connection with the electrode assembly and a movable portion for electrical connection with a current collecting component. The fixed portion is fixedly disposed on the first wall. The movable portion is movably disposed on the first wall, and has a first position in contact with the fixed portion and a second position separated from the fixed portion. The elastic member is used for applying elastic force to the movable portion to maintain the movable portion in the first position. The movable portion is configured to move from the first position to the second position against the elastic force when internal pressure of the battery cell reaches a threshold.

Abstract: A battery cell, a battery, and an electrical apparatus, the battery cell comprising a shell assembly, an electrode assembly, and an elastic member. The shell assembly has an accommodating cavity, with the electrode assembly and the elastic member being accommodated in the accommodating cavity, and the elastic member being attached to the electrode assembly. The elastic member has a pore structure for accommodating an electrolyte solution, and the elastic member is configured to deform when the electrode assembly expands so as to release the electrolyte solution.

Abstract: The present application provides a carbon fiber lithium supplement film, a preparation method thereof, a second battery and a power consumption apparatus including the same. The carbon fiber lithium supplement film may include a carbon fiber and a lithium supplement agent embedded in the carbon fiber, a diameter of the carbon fiber may be 450 nm-850 nm, and a mass percentage the lithium supplement agent in the carbon fiber lithium supplement film may be 40%-80.5%.

Abstract: A negative electrode sheet may comprise a negative electrode current collector and a negative electrode film layer, at least one surface of the negative electrode current collector may be superposedly provided with two or more negative electrode film layers, adjacent negative electrode film layers may be bonded at a plurality of bonding points by a conductive adhesive having a raised structure, and there may be a gap between the adjacent negative electrode film layers at non-bonding points.

Abstract: The embodiments of the present application relate to the technical field of battery production, and disclose a formation system, comprising a clamp, a suction nozzle, and a negative pressure source, the clamp being used to clamp a battery, the suction nozzle being disposed corresponding to a liquid injection hole of the battery to collect formation exhaust gas from the battery, and the negative pressure source being connected to the suction nozzle to provide negative pressure environment for the suction nozzle, wherein there is a preset distance between the suction nozzle and the liquid injection hole of the battery to prevent electrolyte in the battery from being drawn out. The formation system according to the embodiments of the present application can prevent the loss of electrolyte caused by the electrolyte inside the battery being drawn out of a housing.