Production technology of electrical core of lithium ion battery

A lithium-ion battery and production process technology, applied in the field of lithium-ion batteries, can solve problems such as loss of viscosity, and achieve the effects of preventing movement, avoiding battery short circuit, and improving safety performance.

Inactive Publication Date: 2019-06-28
惠州锂威新能源科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide a lithium-ion battery cell production process to solve the

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  • Production technology of electrical core of lithium ion battery

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[0027] In order to make the technical solutions and advantages of the present invention clearer, the present invention and its beneficial effects will be described in further detail below in conjunction with the specific embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0028] Such as figure 1 As shown, a lithium-ion battery cell production process includes the following processes:

[0029] Encapsulation process 1. Place the cell in the packaging equipment and package the cell. The packaging method can be top-side sealing, so that the bare cell is encapsulated in an aluminum plastic film;

[0030] Pre-heating and pressing process 2, placing the electric core in the hot pressing equipment and pre-heating and pressing, so that the hot melt adhesive of the electric core and the aluminum plastic film are bonded;

[0031] Baking process 3, place the cell in a vacuum baking equipment and bake the cell to remove the moisture in...

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Abstract

The invention relates to a production technology of an electrical core of a lithium ion battery, and belongs to the technical field of lithium ion batteries. The technology comprises the following steps of packaging in which the electrical core is packaged; pre-hot-pressing in which the electrical core is placed in a hot pressing device and pre-hot-pressing is carried out, so that a hot melt adhesive of the electrical core is bonded to a plastic aluminum film; baking in which the electrical core is baked; liquid injecting in which a liquid is injected to the electrical core; and standing in which the electrical core is kept standing. Compared with the prior art, the pre-hot-pressing step is set, so that the electrical core is avoided from the phenomenon that a bare electrical core cannot be bonded to the plastic aluminum film in the standing step, the bare electrical core is prevented from playing the plastic aluminum film in the falling-off process, a diaphragm of the bare electricalcore is avoided from being folded and causing short circuit of the battery, and the safety of the lithium ion battery is improved.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to a production process of lithium ion battery cells. Background technique [0002] Lithium-ion batteries have the advantages of light weight and good safety performance, so they have been in a monopoly position in the application of mobile electronic devices such as Bluetooth headsets, mobile phones, notebook computers, tablet computers, cameras, and portable mobile power supplies. At the same time, lithium-ion batteries have also been applied in batches in electric motorcycles, electric vehicles and other fields. [0003] Existing lithium-ion batteries may accidentally fall during use and cause fire and explosion problems. Therefore, battery drop resistance is a very core indicator for evaluating the safety performance of lithium-ion batteries. Generally, the bare cell of a lithium-ion battery is wrapped with an aluminum-plastic film (battery pocket), an...

Claims

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Application Information

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IPC IPC(8): H01M10/058H01M10/0525
CPCY02E60/10Y02P70/50
Inventor 洪春林郑松彬纪荣进郑明清王威李载波陈劲松杨山
Owner 惠州锂威新能源科技有限公司
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