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Lithium battery drying process

A lithium battery and process technology, applied in drying, dryer, secondary battery and other directions, can solve the problems of reduced battery performance, inability to completely remove the moisture of the battery core, achieve large energy consumption, prolong baking time, The effect of increasing the drying temperature

Active Publication Date: 2019-06-14
广西燚能新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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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 the pole piece core into the 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-finishe...

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Abstract

The invention discloses a lithium battery drying process. The lithium battery drying process comprises the steps that 1, baking for the first time is carried out, pole pieces or pole piece coil coresare placed into an oven for baking; 2, assembling is carried out, the pole pieces subjected to baking for the first time are wound into the pole piece coil cores, and the pole piece coil cores are installed in a battery shell with an opening at one end to manufacture a semi-finished battery, or the pole piece coil cores subjected to baking for the first time are installed in the battery shell withthe opening at one end to manufacture the semi-finished battery; and 3, baking for the second time is carried out, the semi-finished battery is placed into the oven for baking. According to the lithium battery drying process, the moisture in the battery can be effectively removed through a two-stage drying process, the drying temperature is not required to be greatly increased and the baking timeis not required to be prolonged in the baking process, negative influence on the performance of the battery is not caused, and greater energy consumption is not brought.

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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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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