Vacuum baking oven for pole pieces of battery

Abstract

The invention relates to a vacuum baking oven for pole pieces of a battery. The vacuum baking oven comprises a box body, a baking room, a vacuumizing component, a heating component, a heat transfer component, a gas flow circulating component and a protective gas supply component, wherein the baking room is positioned in the box body and used for accommodating and baking the pole pieces; the vacuumizing component is positioned outside the box body and communicated with the baking room; the heating component is positioned in the box body and arranged around the outside of the baking room; the heat transfer component is in contact with and around the outside of the baking room and is used for quickening the transfer of the heat from the heating component to the baking room; the gas flow circulating component is positioned in the box body and used for circulating the gas in the baking room; and the protective gas supply component is positioned outside the box body and communicated with the baking room to blow protective gas into the baking room. The vacuum baking oven can reduce the water content of the pole pieces and enhance the baking efficiency and the safety.

Description

technical field [0001] The invention relates to the field of battery drying equipment, in particular, the invention relates to a vacuum oven for battery pole pieces. Background technique [0002] In the battery industry, lithium batteries have received more and more attention and attention due to their advantages such as high energy density, high voltage, wide operating temperature range, and long life. Over the past decade, lithium batteries have dominated the primary (non-rechargeable) and secondary (rechargeable) lithium battery markets and are widely used in portable electronic devices such as mobile phones, notebook computers, and digital cameras . [0003] The pole piece is an important part of the lithium battery and the core of the lithium battery. Among them, the process of drying the pole piece is a very critical process in the production process of the pole piece. As we all know, the drying effect of the pole piece is very important, and its water content will ...

AI Technical Summary

Problems solved by technology

However, the existing vacuum ovens often have the following deficiencies: first, the temperature and moisture distribution in the drying chamber are uneven, which often leads to large fluctuations in the moisture content of each pole piece after drying, usually between 10% and 15%; Second, because the material is always surrounded by oxygen during the drying process, it is very easy to cause the pole pieces to oxidize or even burn at high temperature, causing danger; third, the entire drying process is completed under high temperature and high vacuum Therefore, the internal pressure of the vacuum oven may be too high, which may cause the danger of oven explosion; fourth, the existing vacuum ovens often use natural cooling methods to cool the drying chamber and pole pieces, which leads to the drying process The time is longer and the efficiency is lower, which reduces the production efficiency of battery pole pieces; fifth, the volume of vacuum ovens is usually small, which is not suitable for industrial mass production, and its heating efficiency is not high, which easily affects production efficiency

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