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Energy-saving and consumption-reducing method and system for producing high-performance lithium battery negative electrode material

A negative electrode material, lithium battery technology, applied in chemical instruments and methods, climate sustainability, furnaces, etc., can solve the problems of unsatisfactory product resistivity index, long production cycle, high cost, and achieve the crystal plane spacing of graphite negative electrode material. Uniform densification, increased power drop rate, fast heating effect

Pending Publication Date: 2022-08-09
内蒙古欣源石墨烯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This causes problems such as low production efficiency, long production cycle, high power consumption of graphitized products, high cost and unsatisfactory product resistivity indicators in the production process of carbon materials.

Method used

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  • Energy-saving and consumption-reducing method and system for producing high-performance lithium battery negative electrode material
  • Energy-saving and consumption-reducing method and system for producing high-performance lithium battery negative electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] like figure 1 As shown, this embodiment provides a method for producing high-performance lithium battery negative electrode materials for energy saving and consumption reduction, including:

[0046] Set the initial power supply, rising power rate, running time and target power of the graphitization furnace to construct the power transmission curve;

[0047] Based on the power transmission curve, the temperature in the graphitization furnace is controlled to graphitize the negative electrode material of the lithium battery.

[0048]Further, the power supply rising power rate includes: a first rising power rate, a second rising power rate, a third rising power rate, a fourth rising power rate, a fifth rising power rate, a sixth falling power rate, and a seventh rising power rate. ;

[0049] The running time includes: the first running time, the second running time, the third running time, the fourth running time, the fifth running time, the sixth running time and the se...

Embodiment 2

[0082] The equipment used in this example is an Acheson graphitization furnace. First, the insulating material is filled into the furnace wall masonry of the graphitization furnace, a layer of resistance material is laid on the bottom of the furnace, and then the high-performance lithium battery negative electrode material that needs to be graphitized is placed Put it into the crucible, lay a layer of resistance material, and continue to put the crucible with the negative electrode material on it. The longitudinal direction of the crucible furnace is consistent with the longitudinal direction of the graphitization furnace, and then the upper layer of the crucible furnace is filled with insulating material.

[0083] Power transmission: The power transmission curve is: the initial power is 2800kW;

[0084] The calculated power starts from 2800kw, the rising power is 300kW / h, and after running for 3h, the reaching power is 3700kw;

[0085] The calculation power starts from 3700kw...

Embodiment 3

[0093] The equipment used in this example is an Acheson graphitization furnace. First, the insulating material is filled into the furnace wall masonry of the graphitization furnace, a layer of resistance material is laid on the bottom of the furnace, and then the high-performance lithium battery negative electrode material that needs to be graphitized is placed Put it into the crucible, lay a layer of resistance material, and continue to put the crucible with the negative electrode material on it. The longitudinal direction of the crucible furnace is consistent with the longitudinal direction of the graphitization furnace, and then the upper layer of the crucible furnace is filled with insulating material.

[0094] Power transmission: The power transmission curve is: the initial power is 3000kW;

[0095] The calculated power starts from 3000kw, the rising power is 400kW / h, and after running for 2h, the reaching power is 3800kw;

[0096] The calculated power starts from 3800kw, t...

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Abstract

The invention provides an energy-saving and consumption-reducing method and system for producing a high-performance lithium battery cathode material, and the method comprises the steps: setting the power supply initial power, the power supply rising power rate, the operation time and the target power of a graphitization furnace, and constructing a power transmission curve; and controlling the temperature in the graphitization furnace based on the power transmission curve, and graphitizing the lithium battery negative electrode material. According to the invention, the purposes of reducing the power transmission time, reducing the heat loss and the unit power consumption, improving the production efficiency, improving the resistivity index of the product and the like in the production of the high-performance lithium battery negative electrode material can be achieved.

Description

technical field [0001] The invention belongs to the technical field of high-performance lithium battery negative electrode materials, and in particular relates to a method and a system for producing high-performance lithium battery negative electrode materials for energy saving and consumption reduction. Background technique [0002] In the production of lithium-ion anode materials, graphitization is one of the most important processes. Graphitization is to pass electric current to make the temperature in the furnace rise to 2700-3000℃ to complete the graphitization process. The common graphitization furnace is Acheson furnace, also called crucible furnace, which supplies power to the furnace in one-way AC or DC mode. . [0003] The main basis for judging the furnace temperature of the graphitization furnace is the power curve, which is also the most important power transmission curve of the graphitization furnace. Each furnace should have the starting power and the rising...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/205F27D19/00
CPCC01B32/205F27D19/00Y02P20/10
Inventor 薛永赵珍郝宇张文杰陈瑞
Owner 内蒙古欣源石墨烯科技股份有限公司
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