Vacuum liquid filling equipment for soft-package battery

Abstract

The invention belongs to the field of production equipment for lithium ion batteries, and particularly relates to vacuum liquid filling equipment for a soft-package battery. The vacuum liquid filling equipment for the soft-package battery comprises a machine frame and a multi-workstation turnplate which is arranged on the machine frame, wherein a drawer-type sealed box body is installed on any workstation of the multi-workstation turnplate; a battery fixing clamp is fixedly installed inside the drawer-type sealed box body; a battery loading and unloading unit, a battery packaging bag sucking-open unit, a vacuumizing unit, a liquid filling unit and a sealing unit which correspond to the workstations of the multi-workstation turnplate are fixedly arranged on the periphery of the multi-workstation turnplate sequentially; two sides of the battery loading and unloading unit are fixedly connected with a front filled liquid weighing unit and a back filled liquid weighing unit respectively; and each unit is fixedly connected on the machine frame. Compared with the prior art, the vacuum liquid filling equipment for the soft-package battery has the advantages that the electrolyte soaking time can be reduced, the space occupied by the equipment can be reduced, a surplus liquid filling pump can be saved, the investment cost of the equipment can be reduced, the liquid filling precision and the stability can be improved and the waste of the electrolyte can be reduced.

Description

technical field [0001] The invention belongs to the field of lithium-ion battery production equipment, in particular to a vacuum liquid injection equipment for soft-packaged batteries. Background technique [0002] As an emerging energy storage carrier and a new force in the field of new energy, lithium-ion batteries are playing an increasingly important role in the process of changing human lifestyles. [0003] For lithium battery manufacturers, high efficiency and low cost are one of the main purposes of their continuous investment in research and development resources. At present, the production process of domestic lithium batteries is not perfect, and many processes, especially the key processes that directly affect the performance of the battery, are worthy of our research and improvement, and liquid injection is one of the key processes. [0004] The existing liquid injection equipment for flexible packaging batteries generally includes four stations. When liquid is i...

AI Technical Summary

Problems solved by technology

The use of this multiple vacuum pumping equipment to achieve the purpose of battery vacuum injection will make the time for the electrolyte to infiltrate the battery cell after liquid injection longer, and the production cycle will be longer; and each station will simultaneously process multiple batteries. Perform actions including loading and unloading, suction bag mouth, injection needle, vacuuming, liquid injection, repeated vacuuming, packaging, etc., resulting in bulky equipment, increased cost, and low production efficiency

Among them, the liquid injection process uses multiple expensive liquid injection pumps to inject liquid to multiple batteries at the same time, resulting in low efficiency of the liquid injection pumps and increased costs

In addition, the liquid injection mechanism in the prior art is likely to cause atomization and splashing of the electrolyte, resulting in low precision of liquid injection and unstable product quality, and the electrolyte splashed on the packaging bag of the flexible packaging battery will also corrode the packaging bag. affect the appearance of the battery

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