Liquid injection equipment and liquid injection method of battery cell

Abstract

The invention discloses liquid injection equipment of a battery cell. A machine frame is included, and a feeding belt for feeding a battery cell, a weighing mechanism I for weighing the battery cell and a liquid injection vacuumizing mechanism are arranged on the machine frame. The weighing mechanism I is arranged between the feeding belt and the liquid injection vacuumizing mechanism, a transportation module is arranged on one side edge of the weighing mechanism, the transportation module transports the battery cell from the feeding belt to the weighing mechanism I, and the transportation module can also transport the battery cell on the weighing mechanism I to the liquid injection vacuumizing mechanism. A weighing mechanism 2 is arranged on the side edge of the liquid injection vacuumizing mechanism, and a discharging mechanism used for discharging the battery cell and a transferring assembly used for transferring the battery cell from the weighing mechanism 2 to the discharging mechanism are arranged on the side edge of the weighing mechanism 2. The equipment is operated in a full-automatic mode, production efficiency is improved, weighing is performed before battery cell liquidinjection, the weighing is performed again after battery cell liquid injection, an amount of electrolyte injected into the battery cell is ensured to accord with a preset range value, uneven batterycell quality is avoided, and battery cell quality is guaranteed.

Description

technical field [0001] The invention relates to the field of electric core processing, in particular to a liquid injection device and a liquid injection method for electric cores. Background technique [0002] With the rapid development of technology and economy, the functions of electronic products on the market are becoming more and more powerful, and the requirements for the size of the batteries are getting smaller and smaller, but the requirements for the energy density of the batteries are getting higher and higher. Such as figure 2 As shown, the battery cell 2 includes a housing 21, a tab 22 housed in the housing, and a cap 23 welded to the tab, and the cap is attached to the housing. At present, the battery cell needs to be manually processed during processing, and the production efficiency Low. [0003] Electrolyte is one of the important materials of the battery cell. The amount of electrolyte absorption is related to the capacity and cycle life of the battery. I...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low automation, low production efficiency and unguaranteed product quality in the existing battery cell processing, the present invention provides a battery cell liquid injection equipment and liquid injection method

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