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Cylindrical flexible packed lithium ion storage cell with aluminum-plastic composite film

An aluminum-plastic composite film, lithium ion technology, used in secondary batteries, battery electrodes, battery pack components and other directions, can solve the problems of battery failure, heavy weight, battery performance deterioration, etc., to improve service life and reliability, The effect of reducing the likelihood

Inactive Publication Date: 2006-07-26
CITIC GUOAN MENGGULI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current lithium-ion batteries are generally packaged in rigid shells or flexible shells. Rigid shells are generally made of metal materials, such as stainless steel or aluminum alloy, and high-strength engineering plastics can also be used. It has high strength but heavy weight. Moreover, the method of changing the size and shape is complicated, and the flexible shell is packaged with aluminum-plastic film. Its characteristics are low material cost, light weight, flexible change of shell size, fast production speed, and good safety. However, the current flexible packaging lithium ion Batteries are all in a square structure, although the space can be fully utilized, but there are gas inflation and leakage problems, which cause the battery performance to deteriorate rapidly and cause the battery to fail

Method used

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  • Cylindrical flexible packed lithium ion storage cell with aluminum-plastic composite film
  • Cylindrical flexible packed lithium ion storage cell with aluminum-plastic composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Cylindrical aluminum-plastic composite film flexible packaging lithium-ion battery, made of figure 1 As shown, the shell (2) is a cylindrical body of aluminum-plastic composite film flexible packaging, lithium manganate is selected as the positive electrode material, coated on the aluminum foil to make the positive electrode sheet (5), graphite is selected as the negative electrode material, coated on the copper foil The negative pole piece (4) is made, the aluminum foil is selected as the positive pole tab (1), the copper foil is used as the negative pole tab (7), and the casing is equipped with a diaphragm (3), a negative pole piece, a diaphragm and a positive pole piece Cylindrical electrode cores that are superimposed and wound together, the two ends and the middle of the electrode core are wound with fixed tape (not shown in the figure), and a pair of positive and negative pole tabs protruding from both ends are on the same center line, and The plane of the positiv...

Embodiment 2

[0020] Cylindrical aluminum-plastic composite film flexible packaging lithium-ion battery, made of figure 1 As shown, the shell is a cylindrical body of aluminum-plastic composite film flexible packaging, and the composition of lithium cobaltate and lithium nickelate in a weight ratio of 2:1 is selected as the positive electrode material, and is coated on an aluminum mesh to make a positive electrode sheet (5) , selecting soft carbon and hard carbon as the negative electrode material in a ratio of 2:1 by weight, coating it on a copper grid to make the negative pole piece (4), selecting aluminum foil as the positive pole lug (1), and nickel foil as Negative electrode tab (7), the shell is equipped with a cylindrical electrode core wound by the diaphragm (3), negative pole piece, diaphragm and positive pole piece, and the two ends and the middle part of the electrode core are wound and fixed Adhesive tape (not shown in the figure), the two pairs of positive and negative pole lug...

Embodiment 3

[0022] Cylindrical aluminum-plastic composite film flexible packaging lithium-ion battery, made of figure 1 As shown, the housing (2) is a cylindrical body of aluminum-plastic composite film flexible packaging, and the composition of lithium nickel cobaltate, lithium cobaltate and lithium iron phosphate in a weight ratio of 2:0.5:0.5 is selected as the positive electrode material, and coated on A positive pole piece (5) is made on stainless steel foil, metal lithium is selected as the negative pole material, coated on nickel foil to make the negative pole, aluminum foil is used to make the negative pole piece (4), and aluminum foil is chosen as the positive pole lug (1), The nickel foil is the negative electrode lug (7), and the shell is equipped with a cylindrical electrode core wound by the diaphragm (3), the negative pole piece, the diaphragm and the positive pole piece. The middle part is wound with fixed tape (not shown in the figure), the three pairs of positive and nega...

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Abstract

This invention relates to one column polyethylene laminated film flexible lithium ion accumulator, which is characterized by the following: the shell is of polyethylene compound film packing column part; using compound metal oxidation and its compound as positive electrode materials free of imbedded lithium ion; using imbedded and removed lithium ion materials and its compound materials as negative materials and using aluminum foil as positive slice and carbide as negative materials and copper and nickel as negative slices; overlapping the isolated film, negative slices to form one column electrode board core and its outside fixed band; two end positive and negative electrode handles are parallel at one central line.

Description

technical field [0001] The invention relates to a cylindrical aluminum-plastic composite film soft-packaged lithium-ion storage battery, which belongs to the field of energy batteries. technical background [0002] The current lithium-ion batteries are generally packaged in rigid shells or flexible shells. Rigid shells are generally made of metal materials, such as stainless steel or aluminum alloy, and high-strength engineering plastics can also be used. It has high strength but heavy weight. Moreover, the method of changing the size and shape is complicated, and the flexible shell is packaged with aluminum-plastic film. Its characteristics are low material cost, light weight, flexible change of shell size, fast production speed, and good safety. However, the current flexible packaging lithium ion Batteries are all in a square structure. Although the space can be fully utilized, there are gas inflation and leakage problems, which cause the battery performance to deteriorate...

Claims

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Application Information

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IPC IPC(8): H01M10/40H01M10/36H01M2/02H01M4/02H01M4/58H01M4/48H01M4/64H01M10/0525H01M10/0587H01M50/107H01M50/119H01M50/121H01M50/124H01M50/136H01M50/193H01M50/531
CPCH01M2/08H01M2/022Y02E60/122H01M2/0287H01M10/0525H01M2/0275H01M10/0587Y02E60/10H01M50/107H01M50/124Y02P70/50H01M50/121H01M50/193H01M50/136H01M50/119
Inventor 其鲁郝德利徐华晨晖安平岳载吴宁宁雷向利
Owner CITIC GUOAN MENGGULI NEW ENERGY TECH
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