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Water system high-power cylindrical battery and production method thereof

A cylindrical battery and production method technology, applied in battery electrodes, circuits, electrode manufacturing and other directions, can solve problems such as unsatisfactory high-power performance of batteries, environmental pollution, etc., achieve excellent discharge performance, reduce manufacturing costs, and reduce internal cells. blocking effect

Active Publication Date: 2013-10-30
LIAONING KAIXIN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, oil-based batteries use a large amount of toxic solvents such as N-methylpyrrolidone and acetone in the production process, which will pollute the environment.
In recent years, domestic researchers have developed an environmentally friendly water-based production process. In the manufacturing process, all solvents used come from purified tap water. The entire production process does not use toxic solvents, which will not pollute the environment and reduce production. cost, but according to the current traditional battery manufacturing process, the high-power performance of the battery is not satisfactory, especially for batteries used in vehicles that require high-power output

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The production method of the water system high-power cylindrical battery, its specific operation steps are as follows:

[0022] 1) First, mix 3.5g of SBR binder and 4g of LA132 with pure water, stir and mix in the stirring device for 9 hours to melt the glue, and the amount of pure water added is 60g;

[0023] 2) In addition, add 88g of lithium iron phosphate and 4.5g of SUPER-P as a conductive agent into another stirring device, and fully stir and mix the two dry powders for 6 hours;

[0024] 3) Add all the glue solution prepared in step 1) to the fully mixed dry powder in step 2), stir continuously for 5 hours, then add 5g of pure water, and adjust the dynamic viscosity of the mixture within the range of 9000-13000cp (centipoise) Can.

Embodiment 2

[0026] The production method of the water system high-power cylindrical battery, its specific operation steps are as follows:

[0027] 1) First, mix 4g of SBR binder and 1.5g of LA132 with pure water, stir and mix in a stirring device for 9 hours to melt the glue, and the amount of pure water added is 63g;

[0028] 2) In addition, add 90g of lithium iron phosphate and 4.5g of SUPER-P as a conductive agent into another stirring device, and fully stir and mix the two dry powders for 6 hours;

[0029] 3) Add all the glue prepared in step 1) to the fully mixed dry powder in step 2), stir continuously for 5 hours, then add 2g of pure water, adjust the dynamic viscosity of the mixture within the range of 9000-13000cp (centipoise) Can.

Embodiment 3

[0031] The production method of the water system high-power cylindrical battery, its specific operation steps are as follows:

[0032] 1) First, mix 3.2g of SBR binder and 4g of LA132 with pure water, stir and mix in the stirring device for 8 hours to melt the glue, and the amount of pure water added is 62g;

[0033] 2) Add 86.8g of lithium iron phosphate and 6g of SUPER-P as a conductive agent to another stirring device, and fully stir and mix the two dry powders for 6 hours;

[0034] 3) Add all the glue prepared in step 1) to the fully mixed dry powder in step 2), stir continuously for 4 hours, then add 3g of pure water, and adjust the dynamic viscosity of the mixture within the range of 9000-13000cp (centipoise). Can.

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Abstract

The invention relates to the field of high-power water system power batteries, in particular to a water system high-power cylindrical battery and a production method thereof. The water system high-power cylindrical battery is characterized by comprising the following cathode components in percentage by weight: 4.5-6 percent of SUPER-P as a conductive agent, 3.2-4 percent of SBR as a bonding agent, 1.5-4 percent of LA132, 86-90.8 percent of lithium iron phosphate as an electrode material, wherein the total percentage of the components is 100 percent. The production method comprises the following steps of: firstly, mixing the bonding agent SBR and the LA132 with purified water for digesting glue; secondly, fully mixing two dry powders such as the lithium iron phosphate and the conductive agent; thirdly, adding glue liquid digested in the first step in the dry powder in the second step, adding purified water and adjusting the kinetic viscosity of mixture to be within 9000 to 13000cp. Compared with the prior art, the invention has the advantages that an environment-friendly water system is adopted in the manufacturing process of the battery, high-power discharging performance is favorable and the discharge rate reaches 15C.

Description

technical field [0001] The invention relates to the field of high-power water-system power batteries, in particular to a water-system high-power cylindrical battery and a production method thereof. Background technique [0002] Lithium-ion battery, since its birth in the 1990s, has set off revolution after revolution in the field of communication and transportation. At present, power batteries are a new direction for the development of lithium-ion batteries, which will surely bring a new mode of transportation to human beings. At present, batteries are mainly divided into two systems: oil system and water system. Among them, oil-based batteries use a large amount of toxic solvents such as N-methylpyrrolidone and acetone in the production process, which will pollute the environment. In recent years, domestic researchers have developed an environmentally friendly water-based production process. In the manufacturing process, all solvents used come from purified tap water. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/04
CPCY02E60/12Y02E60/10
Inventor 李永康冯素萍
Owner LIAONING KAIXIN NEW ENERGY TECH
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