Method for achieving high voltage and high energy of single cell, preparation of high-voltage and high-energy single cell and preparation method of plate type battery pack

A single battery, high-energy technology, applied in the direction of battery electrodes, secondary batteries, electrode carriers/collectors, etc., can solve the problems of large battery packs and achieve the effect of increasing voltage

Inactive Publication Date: 2018-05-04
华动智慧信息技术(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when high voltage and high energy are required, a large number of single cells are connected in series; this results in a very large battery pack

Method used

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  • Method for achieving high voltage and high energy of single cell, preparation of high-voltage and high-energy single cell and preparation method of plate type battery pack
  • Method for achieving high voltage and high energy of single cell, preparation of high-voltage and high-energy single cell and preparation method of plate type battery pack
  • Method for achieving high voltage and high energy of single cell, preparation of high-voltage and high-energy single cell and preparation method of plate type battery pack

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of the plate-type battery pack of the present embodiment comprises the following preparation steps:

[0044] a) Preparation of positive electrode: 95.5% nickel-cobalt lithium manganese oxide (LiNixCoyMn(1-x-y)O2, where x=1 / 5~4 / 5, y=1 / 5~4 / 5) was used as solvent in NMP , 1.6% of conductive carbon, 1.0% of BP-2000 and 2% of polyvinylidene fluoride were mixed and stirred to form the active material layer A slurry, the solid content of the active material layer A slurry was 65%, and 16 μm aluminum foil was used as the positive electrode collector Fluid, and then apply the active material layer slurry on the surface of 16μm aluminum foil to form the active material layer, dry, and then use a roller press to compact the pole piece to make a positive pole piece, and then use a punching machine or film cutting The machine made the large sheet into a positive electrode sheet of a specified size with an aluminum foil current collector.

[0045] b) Preparati...

Embodiment 2

[0050] The preparation method of the plate-type battery pack of the present embodiment comprises the following preparation steps:

[0051] a) Preparation of positive electrode: 95.5% nickel-cobalt lithium manganese oxide (LiNixCoyMn(1-x-y)O2, where x=1 / 5~4 / 5, y=1 / 5~4 / 5) was used as solvent in NMP , 1.6% of conductive carbon, 1.0% of BP-2000 and 2% of polyvinylidene fluoride were mixed and stirred to form the active material layer A slurry, the solid content of the active material layer A slurry was 65%, and 16 μm aluminum foil was used as the positive electrode collector Fluid, and then apply the active material layer slurry on the surface of 16μm aluminum foil to form the active material layer, dry, and then use a roller press to compact the pole piece to make a positive pole piece, and then use a punching machine or film cutting The machine made the large sheet into a positive electrode sheet of a specified size with an aluminum foil current collector.

[0052] b) Preparati...

Embodiment 3

[0057] The preparation method of the plate-type battery pack of the present embodiment comprises the following preparation steps:

[0058] a) Preparation of positive electrode: 95.5% nickel-cobalt lithium manganese oxide (LiNixCoyMn(1-x-y)O2, where x=1 / 5~4 / 5, y=1 / 5~4 / 5) was used as solvent in NMP , 1.6% of conductive carbon, 1.0% of BP-2000 and 2% of polyvinylidene fluoride were mixed and stirred to form the active material layer A slurry, the solid content of the active material layer A slurry was 65%, and 16 μm aluminum foil was used as the positive electrode collector Fluid, and then apply the active material layer slurry on the surface of 16μm aluminum foil to form the active material layer, dry, and then use a roller press to compact the pole piece to make a positive pole piece, and then use a punching machine or film cutting The machine made the large sheet into a positive electrode sheet of a specified size with an aluminum foil current collector.

[0059] b) Preparati...

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Abstract

The invention discloses a method for achieving high voltage and high energy of a single cell, preparation of the high-voltage and high-energy single cell and a preparation method of a plate type battery pack. The high-voltage and high-energy single cell comprises a positive plate (3), a diaphragm (4), a negative plate (6), an insulating film (5),...a positive plate (3), a diaphragm (4), a negativeplate (6) and an insulating film (5) in sequence and a single cell flexible packaging film (8), wherein each diaphragm (4) is arranged between the corresponding positive plate (3) and the corresponding negative plate (6) in a spaced manner sequentially, and each insulating film (5) is arranged between the corresponding negative plate (6) and the corresponding positive plate (3) in a spaced mannersequentially; an aluminum plastic film (shell) is located at the outermost part in a wrapping manner; a positive pole comprises a positive current collector and an active substance I layer, and the active substance I layer is prepared from 95.0%-99.0% of an active substance I, 0.5%-3.0% of a conductive agent and 0.5%-2.0% of an adhesive; a negative pole comprises a negative current collector andan active substance II layer, and the active substance II layer is prepared from 95.0%-99.0% of an active substance II, 0.5%-2.0% of the conductive agent, 0-1.0% of a thickening agent and 0.5%-3.0% ofthe adhesive. The single cell has high voltage, higher energy density and higher rate performance.

Description

technical field [0001] The invention relates to the field of battery manufacturing, in particular to a single battery capable of realizing high voltage and high energy, a preparation method thereof, and a manufacturing method of a plate battery pack. Background technique [0002] Since the launch of the first commercial lithium battery in 1991, its application has become the core technology of mainstream electronic equipment. With the depletion of oil resources and the increasingly serious environmental problems, it is an urgent need for the world to replace coal power stations and develop clean new energy pure electric vehicles; however, the battery energy under the current traditional thinking is difficult to meet the rapid and high growth The demand for various technological products such as pure electric vehicles, electric bicycles, distributed power station energy storage, smart phones, etc. [0003] At present, the disclosed technology is: the single battery is a sing...

Claims

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Application Information

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IPC IPC(8): H01M10/0587H01M10/0525H01M4/62H01M4/66
CPCH01M4/621H01M4/624H01M4/667H01M10/0525H01M10/0587Y02E60/10Y02P70/50
Inventor 不公告发明人
Owner 华动智慧信息技术(深圳)有限公司
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