Liquid injection equipment and liquid injection method

Abstract

The invention relates to liquid injection equipment and a liquid injection method. The liquid injection equipment comprises a standing assembly and a liquid injection assembly, wherein the standing assembly is provided with a standing cavity; the liquid injection assembly is contained in the standing cavity and comprises a containing cup and a liquid injection needle, a liquid inlet of the liquid injection needle is located in the containing cup, a liquid outlet of the liquid injection needle penetrates out of the bottom of the containing cup, and the containing cup can do lifting motion relative to the liquid injection needle; the lifting assembly is connected with the containing cup so as to drive the containing cup to ascend and descend. In this way, the lifting assembly drives the containing cup to ascend or descend so as to adjust the height position of the liquid level of the electrolyte in the containing cup relative to the liquid injection needle, and therefore accurate liquid injection is achieved. Moreover, the height position of the accommodating cup can be repeatedly adjusted for multiple times before liquid injection is completed, so that the height position of the accommodating cup can be accurately adjusted, the liquid injection amount of the electrolyte can be accurately controlled, and the quality of the battery can be improved.

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