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Soft-package aqueous lithium iron phosphate power battery and making method thereof

A technology for lithium iron phosphate and power batteries, which is applied in the field of flexible packaging water-based lithium iron phosphate power batteries and its preparation, can solve problems such as the shortage of oil-based lithium-ion battery adhesives and reduce battery manufacturing costs, and achieve excellent performance and reduce battery costs. cost, cost reduction effect

Inactive Publication Date: 2013-10-23
河南环宇赛尔新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to develop a soft-package water-based lithium iron phosphate power battery, solve the problem of shortage of oil-based lithium-ion battery adhesives, and effectively reduce battery production costs under the premise of ensuring battery performance

Method used

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  • Soft-package aqueous lithium iron phosphate power battery and making method thereof
  • Soft-package aqueous lithium iron phosphate power battery and making method thereof
  • Soft-package aqueous lithium iron phosphate power battery and making method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The specification and model of the battery is HPPF10173248 / 3.2V / 30Ah.

[0035] The following takes the preparation process of HPPF10173248 / 3.2V / 30Ah battery as an example to illustrate, the shape of the battery and the pole pieces are as follows: figure 1 with 2 As shown, the positive electrode material of the battery includes lithium iron phosphate, super-P (conductive carbon black), KS-6 (conductive graphite), LA133 (aqueous dispersion of acrylonitrile multi-polymer copolymer), deionized water, and its mass The ratio is 91:4:2:3:80; the negative electrode material includes mesophase carbon microspheres, super-P, styrene-butadiene rubber, sodium carboxycellulose, and the mass ratio of deionized water is 95:2:2:1:130 .

[0036] The positive electrode of the battery uses aluminum foil with a thickness of 25 μm, and the negative electrode uses copper foil with a thickness of 16 μm; the positive tab is an aluminum strip or an aluminum-nickel strip with a thickness of 0.2...

Embodiment 2

[0043] The specification and model of the battery is HPPF60100131 / 3.2V / 5Ah.

[0044] The following takes the preparation process of HPPF60100131 / 3.2V / 5Ah battery as an example to illustrate, the shape of the battery and the pole pieces are as follows: Figure 4 with Figure 5 As shown, the positive electrode material includes lithium iron phosphate, super-P, KS-6, LA133, deionized water, and its mass ratio is 86:2:2:10:90; the negative electrode material includes mesophase carbon microspheres, super-P , styrene-butadiene rubber, sodium carboxycellulose, deionized water, the mass ratio is 91:2:5:2:110.

[0045]The positive electrode of the battery uses aluminum foil with a thickness of 15 μm, and the negative electrode uses copper foil with a thickness of 9 μm; the positive tab is an aluminum strip or an aluminum-nickel strip with a thickness of 0.3 mm and a width of 20 mm; the negative tab is nickel-plated copper with a thickness of 0.3 mm. The width is 20mm; the thickness o...

Embodiment 3

[0052] In the positive electrode material of the battery, the mass ratio of lithium iron phosphate, super-P (conductive carbon black), KS-6 (conductive graphite), LA133 (aqueous dispersion of acrylonitrile multi-polymer copolymer), and deionized water is 85:5 :2:8:70;

[0053] In the negative electrode material, the active material is graphite, and the mass ratio of the graphite, super-P, styrene-butadiene rubber, sodium carboxycellulose, and deionized water is 93:1:4:2:120;

[0054] The positive electrode of the battery uses aluminum foil with a thickness of 20 μm, and the negative electrode uses copper foil with a thickness of 15 μm; the positive tab is an aluminum strip or an aluminum-nickel strip with a thickness of 0.2 mm and a width of 40 mm; the negative tab is nickel-plated copper with a thickness of 0.2 mm. The width is 40mm; the thickness of the aluminum-plastic film is 0.152mm.

[0055] Others are the same as embodiment 1.

[0056] In this example, we have changed...

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Abstract

The invention discloses a soft-package aqueous lithium iron phosphate power battery. The positive electrode material of the battery comprises the solvent, lithium iron phosphate, the conductive agent and a positive-electrode aqueous binder according to a mass ratio of (70-100):(85-92):(4-7):(3-10); the negative electrode material of the battery comprises a solvent, an active substance, a conductive agent and a negative-electrode aqueous binder according to a mass ratio of (100-130):(90-95):(1-3):(3-7); the active substance is mesocarbon microbeads or graphite or a silicon-carbon alloy or lithium titanate; the conductive agent is a carbon black conductive agent or a graphite conductive agent; the positive-electrode aqueous binder is an aqueous dispersion of an acrylonitrile multipolymer; the negative-electrode aqueous binder is one or a mixture comprising two of styrene butadiene rubber and sodium carboxycellulose; and the battery is a laminated soft package battery. In the invention, an adhesive shortage problem of an oily lithium ion battery is solved, and the battery making cost is effectively reduced on the premise of guaranteeing the performances of the battery.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a soft-package water-based lithium iron phosphate power battery and a preparation method thereof. Background technique [0002] With the continuous reduction of traditional non-renewable energy sources and the continuous emergence of global environmental degradation problems, human research and development of new energy sources have become more and more urgent. Lithium-ion batteries have become one of the research hotspots in recent years due to their high energy density, high energy efficiency, and environmental friendliness. Among the many types of lithium-ion batteries, lithium iron phosphate batteries are characterized by their stable structure, no pollution, and safety. Good performance, long life and other advantages, it has broad prospects in the field of large-scale power batteries and energy storage. [0003] At present, lithium-ion batteries in the indust...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/13H01M4/26H01M10/0525H01M10/058
CPCY02E60/124Y02E60/122Y02E60/10Y02P70/50
Inventor 韩光鑫刘永华何金佳张露
Owner 河南环宇赛尔新能源科技有限公司
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