Making technology for polymer lithium battery pole slice

A preparation process, lithium battery technology, applied in the direction of electrode manufacturing, battery electrodes, electrode carriers/collectors, etc., can solve the problems of increased production intensity, reduced production intensity, and reduced production efficiency, so as to improve production efficiency and reduce production processes , Excellent effect of rate discharge

Active Publication Date: 2010-12-08
WANXIANG 123 CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention also solves the disadvantages of cumbersome production process in the prior art, resulting in increased production intensity, decreased production efficiency, and increased cost, and provides a polymer for continuous coating of electrode slurry, which can reduce procedures, reduce production intensity, and improve production efficiency Lithium battery pole piece preparation process

Method used

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  • Making technology for polymer lithium battery pole slice
  • Making technology for polymer lithium battery pole slice
  • Making technology for polymer lithium battery pole slice

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: A kind of polymer lithium battery pole piece preparation process (see attached figure 1 attached figure 2 ), using PET4 as a carrier during production, including the following steps:

[0028] a. Cleaning: Select a copper foil with a porosity of 40% and a pore diameter of 1.2 mm as the current collector 3, reserve 20 mm on both sides of the copper foil, first remove oil from the copper foil, and then clean it with an active agent. The active agent is controlled at right The water mass ratio is 1 / 9, at a temperature of 40°C, wash for 70s, then pickle, the concentration of pickling is controlled at 0.3mol / L, and at a temperature of 35°C, wash for 70s, then rinse with water and remove Dry at a temperature of 80°C;

[0029] b. Coating conductive glue: apply a layer of conductive glue on the dried current collector, the thickness of the conductive glue is 8μm, and then fully dry;

[0030] c. Unwinding: place the current collector on the current collector unw...

Embodiment 2

[0034] Embodiment 2: a kind of polymer lithium battery pole piece preparation technology (see attached figure 1 attached figure 2 ), using PET4 as a carrier during production, including the following steps:

[0035] a. Cleaning: Select an aluminum foil with a porosity of 60% and a pore diameter of 1.5mm as the current collector 3, reserve 20mm on both sides of the aluminum foil, first remove the oil from the aluminum foil, and then clean it with an active agent. The active agent is controlled at a mass ratio of water 1 / 10, at 45°C, wash for 90s, then carry out alkali washing, the concentration of alkali washing is controlled at 0.8mol / L, at 45°C, wash for 50s, then rinse with clean water and dry at 100°C Dry at a temperature;

[0036] b. Coating conductive adhesive: apply a layer of conductive adhesive on the dried current collector, the thickness of the conductive adhesive is 10 μm, and then fully dry;

[0037] c. Unwinding: place the current collector on the current coll...

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Abstract

The invention relates to a preparation technique of battery electrode flakes of a lithium polymer battery, solving the shortcoming that the current collector and electrode membrane are laminated and hot-pressed after being cut, which is not conductive to the application of continuous hot pressing afterwards in the prior art. When in production, PET is adopted as a carrier, and the steps are: a. acurrent collector is washed with acid base or alkali acid, and fully rinsed with clean water; b. the washed current collector is coated with a layer of conductive adhesive and fully dried; c. the current collector and the PET are respectively put on a unreeling body and simultaneously unreeled in parallel, leading the current collector to be stuck to the PET in parallel; d. the current collector is coated with the electrode coating and dried; e. the current collector and the PET are simultaneously separated and separately reeled. The electrode coating is adopted to directly coat on a copper-aluminum foil or copper-aluminum net, thereby realizing continuous thermal pressing process of the current collector and the electrode coating, reducing production procedure, improving production efficiency and reducing production cost.

Description

technical field [0001] The invention relates to a process for preparing pole pieces of polymer lithium batteries capable of continuous operation. Background technique [0002] With the vigorous development of information technology, people's requirements for environmental protection are getting higher and higher, and the degree of attention to environmental pollution is also increasing. Lithium secondary batteries are characterized by their high energy density, high voltage, small size, light weight and safety. It has achieved great development and has become the main new energy source for communication products. [0003] In the field of lithium secondary battery production, liquid lithium-ion battery pole pieces are made by attaching a layer of electrode slurry on the current collector, while polymer lithium batteries are made by attaching electrode slurry to punched copper and aluminum grids. And made. At present, the copper at the punching hole used in the manufacturing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04H01M4/64H01M4/1399
CPCY02E60/10
Inventor 邓龙征张兴国丁芝玲左金鹏方火林
Owner WANXIANG 123 CO LTD
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