Lithium battery drying process

A lithium battery and process technology, applied in drying, dryer, secondary battery and other directions, can solve the problems such as the inability to completely remove the moisture of the battery core and the reduction of battery performance, achieve large energy consumption, increase drying temperature, Efficient removal effect

Active Publication Date: 2021-11-05
广西燚能新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention discloses a lithium battery drying process, which is used to solve the problem that the existing lithium battery drying process cannot completely remove the moisture inside the battery winding core or cause the performance of the battery to decrease

Method used

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Embodiment Construction

[0052] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0053] see figure 1 , a lithium battery drying process S10 provided in an embodiment of the present invention, comprising:

[0054] The first baking step S11 is to put the pole piece or pole piece core into an oven for baking;

[0055]Assembling step S12, winding the pole piece after the first baking step into a pole piece core, and installing the pole piece core inside the battery case with an open end to make a semi-finished battery, or, after the first baking step The pole piece core of a baking step is installed inside the battery case with an open end to make a semi-finished battery;

[0056] In the second baking step S13, the semi-finished bat...

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PUM

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Abstract

The invention discloses a lithium battery drying process, which comprises a first baking step of putting a pole piece or a pole piece core into an oven for baking; an assembly step of winding the pole piece after the first baking step into a pole piece core, and install the pole piece core inside a battery case with an open end to make a semi-finished battery, or install the pole piece core after the first baking step into a battery with an open end The inside of the casing is used to make a semi-finished battery; in the second baking step, the semi-finished battery is put into an oven for baking. The lithium battery drying process disclosed in the present invention can efficiently remove the moisture inside the battery through the two-stage drying process, and does not need to greatly increase the drying temperature and prolong the baking time during the baking process, and will not damage the battery. Performance is negatively impacted without greater energy consumption.

Description

technical field [0001] The invention relates to the field of lithium battery manufacturing, in particular to a lithium battery drying process. Background technique [0002] Inorganic lithium salt is an important component in the electrolyte of ion batteries. Since inorganic lithium salts encounter water, they will produce chemical reactions, which seriously affect the overall performance of the battery. Therefore, in the manufacturing process of lithium-ion batteries, the removal of moisture inside the battery is particularly important. [0003] There is a baking process before the lithium-ion battery is injected, and a vacuum oven is used for baking to remove water. For cylindrical lithium-ion batteries with larger diameter and higher height (for example, diameter ≥ 18mm, height ≥ 65mm), it is generally used to prolong the baking time or increase the baking temperature to reduce the moisture inside the battery. There are some defects in this method, because after the batt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B5/04F26B9/06F26B21/00H01M10/058H01M10/0525
CPCY02E60/10Y02P70/50
Inventor 欧瑞先黄国文李亮韦丽娟
Owner 广西燚能新能源有限公司
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