Integral automatic sealing liquid injector

Abstract

The invention discloses an integral automatic sealing liquid injector. By a mode of a T-shaped valve and a concave lower cover, an automatic sealing fast liquid injection structure employing a vacuum supply and liquid injection integrated pipeline is achieved through a callback spring and a spring sealing gasket. The callback spring is arranged in a valve cover and is used for bouncing the valve cover; and the spring sealing gasket is arranged on a valve body and is used for bouncing the valve body. Different from a traditional working mode of opening the valve in an ascending manner and closing the valve in a descending manner, the structure mode of the T-shaped valve and the concave lower cover is more beneficial to automatic sealing of the liquid injector. By the integral automatic sealing liquid injector, a vacuum supply pipeline and a liquid injection pipeline are combined into a whole, so that the space of a liquid injector body is saved; and improvement of the liquid injection rate is facilitated by vacuum negative pressure liquid injection. The liquid injector is automatically sealed after vacuum supply or liquid injection is completed through automatic sealing, and can directly move, so that convenience is provided for automatic production; automatic large-scale production of battery liquid injectors can be implemented; and the production efficiency is improved.

Description

technical field [0001] The invention relates to a liquid injector, in particular to a liquid injector for battery electrolyte. Background technique [0002] In the current production of lithium batteries on the market, when injecting liquid into lithium batteries, the aperture of the battery box is relatively small. Only manual liquid injection can be used for one-to-one liquid injection processing. This processing method has low injection accuracy. , low production efficiency, poor safety, etc. However, the existing liquid injectors cannot form a fast and efficient liquid injection production line due to sealing and other reasons. The integrated liquid injector is often because the electrolyte is stored inside the liquid injector when vacuuming The volatilization of the electrolyte not only wastes raw materials but also reduces the accuracy of liquid injection. If the vacuum is separated from the liquid injection, the liquid injection cannot be efficiently injected. This ha...

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Problems solved by technology

[0002] In the current production of lithium batteries on the market, when injecting liquid into lithium batteries, the aperture of the battery box is relatively small. Only manual liquid injection can be used for one-to-one liquid injection processing. This processing method has low injection accuracy. , low production efficiency, poor safety, etc. However, the existing liquid injectors cannot form a fast and efficient liquid injection production line due to sealing and other reasons. The integrated liquid injector is often because the electrolyte is stored inside the liquid injector when vacuuming The volatilization of the electrolyte not only wastes raw materials but also reduces the accuracy of liquid injection. If the vacuum is separated from the liquid injection, the liquid injection cannot be efficiently injected. This has always been a problem that plagues manufacturers.

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