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Processing technology of battery with ultra-long cycle service life

A processing technology and battery technology, which is applied in the processing technology field of ultra-long cycle service life batteries, can solve the problems of battery performance degradation and loss, and achieve the effects of improving low-temperature charge and discharge capabilities, increasing service life, and improving cycle and storage performance

Inactive Publication Date: 2021-04-27
江苏伟复能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The battery attenuation in the prior art is a key indicator that affects the cruising range and value retention rate of the vehicle. The essence of its attenuation is the reduction of the content of internal mobile ions. One of the factors is the structural change of the positive and negative electrode materials or the decomposition and deterioration of the electrolyte. , when the power battery is charging and discharging, the ions will react with the electrolyte during the moving process, so there will be a certain loss. As the number of charging and discharging increases, the number of ions will gradually decrease, and the performance of the battery will decrease. The current solutions in the industry mostly start with materials, electrolytes, diaphragms, and battery management systems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present invention provides a technical solution: a processing technology for a battery with an ultra-long cycle life, comprising the following steps:

[0025] Step 1: Mix the positive and negative electrode materials separately, inject water into the raw materials through a mixer and stir them into a liquid bottom material;

[0026] Step 2: Convey the metal sheet through the conveying mechanism, spray the base material evenly on the metal sheet through the spraying machine, and finally make the electrode sheet, place the electrode sheet on the heating platform, remove the water through pancake processing, and then use hydraulic equipment to pass The direct pressing method reduces the thickness of the electrode sheet and increases the material density on the electrode sheet;

[0027] Step 3: Disassemble and cut the pole piece by cutting equipment in a vacuum environment, make the pole piece into a preliminary roll shape by a roller machine, and prepare a number of ba...

Embodiment 2

[0034] The present invention provides a technical solution: a processing technology for a battery with an ultra-long cycle life, comprising the following steps:

[0035] Step 1: Mix the positive and negative electrode materials separately, inject water into the raw materials through a mixer and stir them into a liquid bottom material;

[0036] Step 2: Convey the metal sheet through the conveying mechanism, spray the base material evenly on the metal sheet through the spraying machine, and finally make the electrode sheet, place the electrode sheet on the heating platform, remove the water through pancake processing, and then use hydraulic equipment to pass The direct pressing method reduces the thickness of the electrode sheet and increases the material density on the electrode sheet;

[0037] Step 3: Disassemble and cut the pole piece by cutting equipment in a vacuum environment, make the pole piece into a preliminary roll shape by a roller machine, and prepare a number of ba...

Embodiment 3

[0044] The present invention provides a technical solution: a processing technology for a battery with an ultra-long cycle life, comprising the following steps:

[0045] Step 1: Mix the positive and negative electrode materials separately, inject water into the raw materials through a mixer and stir them into a liquid bottom material;

[0046] Step 2: Convey the metal sheet through the conveying mechanism, spray the base material evenly on the metal sheet through the spraying machine, and finally make the electrode sheet, place the electrode sheet on the heating platform, remove the water through pancake processing, and then use hydraulic equipment to pass The direct pressing method reduces the thickness of the electrode sheet and increases the material density on the electrode sheet;

[0047] Step 3: Disassemble and cut the pole piece by cutting equipment in a vacuum environment, make the pole piece into a preliminary roll shape by a roller machine, and prepare a number of ba...

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Abstract

The invention relates to the technical field of batteries, particularly to a processing technology of a battery with ultra-long cycle service life. The processing technology comprises the following steps: 1, mixing an electrode material; 2, uniformly mixing a backing material; 3, decomposing and cutting a pole piece; 4, bending and pressurizing; 5, injecting an electrolytic solution; and 6, detecting. According to the long-life battery provided by the invention, the surface stability and the bulk phase stability of the negative electrode material are remarkably enhanced, the consumption of active lithium is greatly reduced, the performance requirement of ultra-long service life is met, the electrolyte can show self-adaptive protection characteristics, the internal circulation and storage performance of the battery is improved, and side reactions are effectively inhibited so as to prolong the service life of the battery; and through material improvement and structure improvement, the produced long-life battery has higher core competitiveness.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a processing technology for a battery with an ultra-long cycle service life. Background technique [0002] The battery life is generally between 2-3 years, but if the battery quality is excellent and the user's battery usage habits are good, there may be a "long-life battery" that far exceeds the normal life of the battery. [0003] The battery attenuation in the prior art is a key indicator that affects the cruising range and value retention rate of the vehicle. The essence of its attenuation is the reduction of the content of internal mobile ions. One of the factors is the structural change of the positive and negative electrode materials or the decomposition and deterioration of the electrolyte. , when the power battery is charging and discharging, the ions will react with the electrolyte during the moving process, so there will be a certain loss. As the number of charging an...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01M10/04H01M50/609
CPCH01M4/0404H01M4/0471H01M4/0433H01M10/0404Y02E60/10Y02P70/50
Inventor 刘建华王光惠凯潘利徐智力胡进军尹雷陈军严凯刘俊海
Owner 江苏伟复能源有限公司