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Forming and capacity grading method of lithium ion secondary battery

A secondary battery and lithium-ion technology, applied in non-aqueous electrolyte battery, electrolyte battery manufacturing, sustainable manufacturing/processing, etc., can solve problems such as low efficiency, underclamping, immature process and gas-produced lithium, so as to avoid Or reduce the effect of lithium analysis and improve the process

Active Publication Date: 2013-01-02
东莞赣锋电子有限公司
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Problems solved by technology

[0002] At present, domestic liquid lithium-ion polymer batteries adopt the process of formation, volume separation and step-by-step process. The disadvantage is that it needs to be clamped after formation, and clamped again before volume separation, which is inefficient. Although some peers have carried out continuous production of chemical composition and volume However, due to problems such as gas production and lithium precipitation caused by immature technology, it cannot be implemented

Method used

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  • Forming and capacity grading method of lithium ion secondary battery
  • Forming and capacity grading method of lithium ion secondary battery
  • Forming and capacity grading method of lithium ion secondary battery

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] Such as figure 1 , 2 As shown, it is a structural diagram and a side view of the liquid lithium ion polymer battery before formation. The present invention performs formation and continuous production of the liquid lithium ion polymer battery shown in the figure.

[0036] Such as image 3 , 4 Shown, the chemical composition capacity method of lithium-ion secondary battery of the present invention, comprises the following steps:

[0037] Place splints 3 on the left and right wide surfaces 2 of the uncharged liquid lithium ion polymer battery 1, which is a liquid lithium ion polymer battery that has completed hot and cold pressing and is not charged. object battery, the area of ​​splint 3 is at least 1 / 2 of the area of ​​wide surface 2,

[0038] Clamp two splints 3 with a clamp 4 that can apply external force,

[0039] Put the uncharged liquid lith...

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Abstract

The invention relates to the forming and capacity grading of batteries, and specifically relates to a forming and capacity grading method of a lithium ion secondary battery. The method comprises the following steps of respectively placing clamp plates (3) at the left and right wide surfaces (2) of an uncharged liquid lithium ion polymer battery (1) which undergoes hot and cold rolling, clamping the two clamp plates (3) by using a clamp (4) which is capable of applying external force and placing the uncharged liquid lithium ion polymer battery (1) which is equipped with the clamp plates (3) and the clamp (4) into a detection cabinet for forming and capacity grading so as to obtain the forming and capacity grading continuously completed battery. According to the forming and capacity grading method of the lithium ion secondary battery, the process is improved and the generation of lithium analysis is avoided or decreased according to the mechanism of forming gas generation and the reasons of the lithium analysis on the premise of not changing the system characteristics of the main materials of the liquid lithium ion polymer battery, and the embedding and the de-embedding of the lithium ions are not influenced under the state of generating gas.

Description

technical field [0001] The invention relates to the chemical composition and capacity of batteries, in particular to a method for chemical composition and capacity of lithium ion secondary batteries. In particular, it refers to a composition and volume separation process that combines the fixture formation and volume separation of soft-pack lithium-ion batteries. Background technique [0002] At present, domestic liquid lithium-ion polymer batteries adopt the process of formation, volume separation and step-by-step process. The disadvantage is that it needs to be clamped after formation, and clamped again before volume separation, which is inefficient. Although some peers have carried out continuous production of chemical composition and volume However, due to problems such as gas production and lithium precipitation caused by the immature process, it cannot be implemented. Contents of the invention [0003] Aiming at the defects existing in the prior art, the object of t...

Claims

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Application Information

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IPC IPC(8): H01M10/058
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 汪国红陈俊
Owner 东莞赣锋电子有限公司
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