Packaging method of lithium ion battery, and lithium ion battery

A lithium-ion battery and packaging method technology, which is applied to secondary batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve the waste of aluminum-plastic film materials, defective products with scratches, and poor liquid absorption capacity of battery cells. problems, to achieve the effect of reducing material waste, ensuring filling and injecting liquid, and quickly infiltrating

CN102394316BInactive Publication Date: 2015-04-01SHENZHEN GREPOW BATTERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-04-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a field of lithium ion battery designing, and discloses a packaging method of a lithium ion battery, and a lithium ion battery. The lithium ion battery comprises a battery core, an aluminum-plastic film, electrolyte, an anode lead, and a cathode lead. An independent battery core chamber and an independent air sac chamber are formed in an aluminum-plastic film housing; the battery core chamber is sealed, and the air sac is provided with pores; the battery core and the electrolyte are sealed in the battery core chamber; the anode lead and the cathode lead are fixed on one end of the battery core, and are respectively connected to an anode sheet and a cathode sheet in the battery core; lead gum outer surface layers on the anode lead and the cathode lead are hot-melted and combined with the aluminum-plastic film housing; the ends of the anode lead and the cathode lead which are connected to the battery core are sealed in the battery core chamber, and other ends protrude on an end of the battery core chamber; the air sac is positioned on the end opposite to the anode lead and the cathode lead. With the structure provided by the invention, cost of the aluminum-plastic film can be saved, production efficiency can be improved, and electrical properties of the lithium battery product can be improved.
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Description

technical field

[0001] The invention relates to the field of lithium ion battery design, in particular to a lithium ion battery packaging method and the lithium ion battery. Background technique

[0002] Due to the advantages of light weight, small size, large capacity and fast charging speed, lithium-ion batteries are widely used in various digital and communication products such as laptop lights.

[0003] With the shortage of energy and the highlight of environmental pollution, lithium-ion batteries have become the current trend as a new type of power source. Aluminum-plastic film flexible packaging lithium-ion batteries are currently commonly used as a power ion battery.

[0004] The structure of the current aluminum-plastic film flexible packaging lithium-ion battery is mainly as follows: figure 1 shown, see figure 1 , in the process of manufacturing soft-pack lithium-ion batteries, it is necessary to carry out secondary vacuum sealing, and an airbag 101 is formed on t...

Examples

Embodiment 1

[0051] See figure 2 .

[0052] This embodiment provides a lithium ion battery, which includes the following main components: battery core body (not shown in the figure), aluminum-plastic film casing 201, electrolyte (not shown in the figure), positive pole ear 202 and negative pole Ear 203. Its connection relationship is as follows:

[0053] In the aluminum-plastic film casing 201 of this embodiment, two independent and non-communicating cavities are formed: the cell cavity 2011 and the airbag cavity 2012 .

[0054] Wherein, the cell cavity 2011 is completely sealed, and the electrolyte, and the cell body including the positive electrode sheet, the negative electrode sheet and the diaphragm are sealed and packaged in the cell cavity 2011 .

[0055] An air hole is provided on the surface of the airbag cavity 2012 (not shown in the figure, it is an insertion hole formed by a vacuum suction tube formed during the secondary sealing of the vacuum). The airbag cavity 2012 is lo...