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

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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 pr

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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Example Embodiment

[0033] Example 1

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

[0035] The following takes the preparation process of the HPPF10173248 / 3.2V / 30Ah battery as an example to illustrate, the battery shape and pole pieces are as 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 copolymer), deionized water, and its quality The ratio is 91:4:2:3:80; the negative electrode material includes mesocarbon 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 25μm, and the negative electrode uses a copper foil with a thickness of 16μm; the positive lug is aluminum tape or aluminum-to-nickel tape with a thickness of 0.2mm and a width of 60mm; The width is ...

Example Embodiment

[0042] Example 2

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

[0044] The following takes the preparation process of the HPPF60100131 / 3.2V / 5Ah battery as an example to illustrate, the battery shape and pole pieces are as Figure 4 with Figure 5 As shown, the positive electrode material includes lithium iron phosphate, super-P, KS-6, LA133, and deionized water with a mass ratio of 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 15μm, and the negative electrode uses a copper foil with a thickness of 9μm; the positive lug is an aluminum tape or aluminum-to-nickel tape with a thickness of 0.3mm and a width of 20mm; the negative electrode is nickel-plated copper with a thickness of 0.3mm, The width is 20mm; the thickness of the alumin...

Example Embodiment

[0051] Example 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 (water dispersion of acrylonitrile copolymer), and deionized water is 85:5 :2:8:70;

[0053] In the negative electrode material, the active material is graphite, the graphite, super-P, styrene-butadiene rubber, sodium carboxycellulose, and the mass ratio of 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 lug is an aluminum tape or aluminum-to-nickel tape with a thickness of 0.2 mm and a width of 40 mm; the negative electrode 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 in Example 1.

[0056] In this example, we changed the ratio o...

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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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