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Method for realizing high voltage of single battery, preparation of single battery and fabrication method of battery pack adopting single battery

A single battery, single voltage technology, applied in secondary battery manufacturing, electrolyte battery manufacturing, secondary batteries, etc., can solve the problem of large battery packs

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 is 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 realizing high voltage of single battery, preparation of single battery and fabrication method of battery pack adopting single battery
  • Method for realizing high voltage of single battery, preparation of single battery and fabrication method of battery pack adopting single battery
  • Method for realizing high voltage of single battery, preparation of single battery and fabrication method of battery pack adopting single battery

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation method of the battery pack of this embodiment comprises the following preparation steps:

[0037] Preparation of positive electrode: Using NMP as solvent, 95.5% nickel-cobalt lithium manganese oxide (LiNixCoyMn(1-x-y)O2, where x=1 / 5~4 / 5, y=1 / 5~4 / 5), 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 current collector. Then apply the active material first layer slurry on the surface of 16 μm aluminum foil to form the active material first layer, dry it, and then use a roller press to compact the pole piece to make a positive pole piece, and then use a punching machine or a film cutter. The large sheet is made into a positive electrode sheet of a specified size with an aluminum foil current collector. Preparation of the negative electrode: t...

Embodiment 2

[0040] The preparation method of the battery pack of this embodiment comprises the following preparation steps:

[0041] 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.

[0042] b) Preparation of the negative...

Embodiment 3

[0047] The preparation method of the battery pack of this embodiment comprises the following preparation steps:

[0048] 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.

[0049] b) Preparation of the negative...

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Abstract

The invention discloses a method for realizing high voltage of a single battery, preparation of a single battery and a fabrication method of a battery pack adopting the single battery. The high-capacity single battery comprises a positive plate (3), a diaphragm (4), a negative plate (6), an insulating film (5), ...a positive plate (3), a diaphragm (4), a negative plate (6), an insulating film (5)and a single battery flexible package film (8), the diaphragm (4) is sequentially spaced between the positive plate (3) and the negative plate (6), and the insulating film (5) is sequentially spaced between the negative plate (6) and the positive plate (3); an aluminum plastic film (casing) wraps the outermost part; a positive pole comprises a positive pole current collector and an active materiallayer A, wherein the active material layer A is prepared from components as follows: 95.0%-99.0 % of an active material A, 0.5%-3.0% of a conductive agent and 0.5%-2.0% of a binder; a negative pole comprises a negative pole current collector and an active material layer B, and the active material layer B is prepared from components as follows: 95.0%-99.0% of an active material B, 0.5%-2.0% of a conductive agent, 0-1.0% of a thickening agent and 0.5%-3.0% of a binder. The single battery has high voltage and higher volume energy density and rate capability.

Description

technical field [0001] The invention relates to the field of battery production, in particular to a single battery capable of realizing high voltage, a preparation method thereof, and a method for manufacturing a battery pack thereof. 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 single core, that is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/0525H01M10/058
CPCH01M10/0409H01M10/0525H01M10/058Y02E60/10Y02P70/50
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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