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Lithium ion battery and manufacturing method thereof

A technology of lithium-ion batteries and manufacturing methods, which is applied in the manufacture of electrolyte batteries, secondary batteries, final product manufacturing, etc., can solve the problems of increasing the production cost of lithium-ion batteries, wasting aluminum-plastic films, etc., and achieve the elimination of aluminum-plastic films, Improved safety and reduced production costs

Inactive Publication Date: 2012-07-11
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will waste a lot of aluminum-plastic film and increase the production cost of lithium-ion batteries

Method used

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  • Lithium ion battery and manufacturing method thereof
  • Lithium ion battery and manufacturing method thereof
  • Lithium ion battery and manufacturing method thereof

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Embodiment Construction

[0035] The lithium-ion battery structure of the preferred embodiment of the present invention is as figure 1 shown, see also figure 2 , which includes a sealed casing 20, the casing 20 is provided with a cell, and the outer surface of the casing 20 is provided with a positive tab 31 and a negative tab 32 connected to the cell. An air duct 10 is also provided inside the housing 20 , and a sealed hole 25 is provided on the housing 20 . One end of the airway tube 10 is opened in the shell 20, and the other end of the airway tube 10 is open to the hole 25 on the shell 20. The diameter of the hole 25 is suitable for the diameter of the airway tube 10, and the pressure of the sealing part of the hole 25 is lower than that of the shell. 20 other sealing parts. In this way, when the gas inside the battery casing 20 generates a relatively high pressure, the sealing part of the opening of the air duct 10 can be opened earlier than other parts on the casing 20, so that the gas is disc...

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Abstract

The invention relates to a lithium ion battery and a manufacturing method thereof, wherein the lithium ion battery includes a sealed case; a battery cell is arranged in the case; an anode lug and a cathode lug both connected with the battery cell are arranged on the outer surface of the case; an air duct is also arranged in the case; a sealed hole is formed in the case; an opening at one end of the air duct is arranged inside the case; an opening at the other end of the air duct is communicated with the hole; and the sealed part of the hole can bear pressure smaller than that on other sealed parts on the case. When bigger pressure is generated by air inside the battery case, the sealed parts at the opening of the air duct can be opened more early than other parts on the case, so as to enable air to be exhausted from the air duct and improve the safety of the lithium ion battery; besides, during the manufacturing process of the lithium ion battery, the air duct can replace an air bag in the traditional scheme for vacuum pumping, thereby saving an plastic-aluminum film wasted by the air bag, and reducing the manufacturing cost of the lithium ion battery.

Description

technical field [0001] The invention relates to the technical field of batteries, and more specifically, to a lithium-ion battery and a manufacturing method thereof. Background technique [0002] With the wide application of lithium-ion batteries in mobile phones, notebook computers and other digital products, people's requirements for the performance of lithium-ion batteries are getting higher and higher. Not only do they hope that lithium-ion batteries have excellent electrochemical performance and low price , At the same time, lithium-ion batteries are required to have reliable safety performance. [0003] The shells of existing lithium-ion batteries are divided into metal shells and plastic shells. Metal shells include steel shells and aluminum shells, etc., and non-metallic shells include plastic shells and aluminum-plastic film packaging. Among non-metallic packaging materials for lithium-ion batteries, soft-packaged lithium-ion batteries using aluminum-plastic films ...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M2/12H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 周明杰俞兆喆王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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