Production method for polymer lithium ion batteries of high performance and long service life

A lithium ion battery and a production method technology are applied in the field of lithium ion batteries to achieve the effects of ensuring service life and safety performance, avoiding short circuits and reducing manual operations

Pending Publication Date: 2011-09-28
ZHONGDA IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although great progress has been made, there are still technical difficulties that have not been overcome in actual use.

Method used

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  • Production method for polymer lithium ion batteries of high performance and long service life
  • Production method for polymer lithium ion batteries of high performance and long service life
  • Production method for polymer lithium ion batteries of high performance and long service life

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: In image 3 , Figure 4 , Figure 6 Middle: The positive electrode sheet 1 is installed in the diaphragm bag 2, and the positive electrode sheet 1 is in the shape of a rectangle. Iron Lithium (Li 2 FeSiO 4 ) represented by Li 2 MSiO 4 (M is Co, Ni, Fe, Mn and other transition metal elements) The new positive electrode material and its lithium-containing oxide, composite, conductive agent, and binder are made of two protruding tabs with the same shape and size. The surface of the diaphragm bag 2 is coated with a layer of PP, PE or PVDF2801, which is a copolymer of polyvinylidene fluoride and hexafluoropropylene, and a double-sided coated negative electrode sheet 3 is attached to the outer side of the diaphragm bag 2. The negative electrode sheet 3 is rectangular It is made of alloy materials, carbon-graphite materials, binders, and additives. There is a protruding tab on the top, which first constitutes the positive battery 7. A layer of double-sided coa...

Embodiment 2

[0016] Example 2: In figure 1 , figure 2 , Figure 5 Middle: The negative electrode sheet 3 is installed in the diaphragm bag 2, and the negative electrode sheet 3 is in the shape of a rectangle, made of alloy materials, carbon-graphite materials, binders, and additives. There is a raised tab on the top, and the surface of the diaphragm bag 2 is coated A layer of PP, PE or PVDF2801, which is a copolymer of polyvinylidene fluoride and hexafluoropropylene, has a layer of double-sided coated positive electrode sheet 1 on the outer side of the diaphragm bag 2, which first constitutes the negative electrode single cell 5, and the positive electrode sheet 1 It is in a rectangular shape, made of lithium cobaltate or lithium manganate, lithium nickelate, ternary materials, lithium ferrous phosphate, lithium vanadium iron phosphate and lithium ferrous silicate (Li 2 FeSiO 4 ) represented by Li 2 MSiO 4 (M is Co, Ni, Fe, Mn and other transition metal elements) The new positive ele...

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PUM

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Abstract

The invention provides a production method for polymer lithium ion batteries of high performance and long service life. The batteries comprise positive plates, membrane bags, negative plates, positive double cells, positive monocells, negative double cells and negative monocells. With the design, short circuits resulted from the contact of the positive and negative plates of the batteries can be effectively avoided, and manual manipulation in battery assembling can be reduced. As a result, the influence on battery quality caused by human factors is reduced, the production efficiency and product quality are improved, the production cost is reduced, and the service life and safety performance of the batteries are guaranteed. The method of the invention provides technological theory support for mechanized production of battery assembling, and also provides a basis for future equipment manufacturing of lithium batteries.

Description

technical field [0001] The invention relates to a lithium-ion battery, in particular to a production method for a high-performance and long-life polymer lithium-ion battery. Background technique [0002] With the rapid development of the economy and the progress of the society, the frequency of replacement of old products is getting faster and faster, and it is developing in the direction of high technology, especially lithium batteries, which are used in electronic products such as laptops, mobile phones, and video recorders. wider. High-performance lithium batteries are moving towards the goal of "light, thin, short, and small", and lithium-ion batteries are the best choice for the power supply of various electronic products. At present: most developed countries in the world have gradually expanded lithium-ion batteries to electric bicycles, electric vehicles, electric buses and other fields. In the market: the mainstream product of lithium-ion batteries is liquid lithiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 陈疆徐连宽马宪张力谢毅
Owner ZHONGDA IND GRP
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