Special tool for hot pressing of polymer soft-bag battery

Abstract

The invention relates to a special tool for hot pressing of polymer soft bag battery. The special tool is characterized in that the special tool comprises a tool main body, wherein the tool main bodyis in a rectangular shape; the tool main body is divided into an upper sheet body and a lower sheet body; and the corresponding positions of the top end of the upper sheet body and the lower sheet body are respectively provided with a plug-in type bayonet, the upper sheet body and the lower sheet body are combined to form the tool main body into the V type by the plug-in bayonet, and a plurality of windows are arranged on the corresponding positions of the upper sheet body and the lower sheet body, and the outer dimension of the window is matched with the size of the battery. The special toolhas the advantages that the design is simple, the use is convenient, the design of the multi-window not only can improve the production capacity of the battery, but also facilitates the contact between the battery and the hot-pressing plate, and the hot-pressing thermal conductivity is increased, so that the polymerization effect of the battery is effectively improved. The design scheme of the bayonet replaces the teflon silica gel strip, so that the cost is saved, the operation is simple and convenient, and the production capacity is improved. The design of the air inlet hole is convenient for the opening of the tool and the removal of the battery, and the defect that the traditional silica gel tooling is difficult to open is avoided.

Description

technical field [0001] The invention belongs to the field of lithium batteries, and in particular relates to a special hot-pressing tool for polymer soft pack batteries. Background technique [0002] The application of polymer lithium-ion pouch batteries is becoming more and more extensive. It has the advantages of green and pollution-free, high specific energy, good cycle performance, no memory effect, long storage time, good safety performance, light weight, large capacity, small internal resistance, and customizable shape. [0003] As a key process in the manufacturing process of polymer lithium-ion batteries, the hot-pressing process has attracted more and more attention and attention to the joint improvement of its production capacity and performance. At the same time, fully automated hot pressing equipment has also been widely promoted and applied. Taking the hot pressing machine provided by Guangdong Siyu Automation Equipment Co., Ltd. as an example, its main structu...

AI Technical Summary

Problems solved by technology

Due to the high viscosity of silica gel, it is not easy to separate after hot pressing, and the battery is not easy to take out, which seriously affects the production efficiency of the battery cell; in addition, the poor thermal conductivity of ordinary silica gel also affects the quality of hot pressing of the battery to a certain extent. The service life is short, and generally needs to be replaced once a month or so, and the production cost is relatively high

The development of the V-shaped mold chain makes up for the shortcomings of the short service life of the silicone bag and the high production cost. It can only be fixed on the hot pressing plate by the glass grid tape. In the actual production process, the battery can only be placed on the loading process position, and the battery body is grasped by the mechanical arm, and transferred to the V-shaped mold chain of the hot pressing station. This V-shaped mold chain is suitable for batteries with larger dimensions and only one battery can be placed in one station. For batteries with small dimensions, the robotic arm cannot grab the battery smoothly, nor can it place the battery on the V-shaped mold chain regularly, thus greatly limiting the scope of use of the V-shaped mold chain

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