CN201832590U

CN201832590U - System for homogenizing slurry material of battery with high efficiency

Info

Publication number: CN201832590U
Application number: CN2010205744710U
Authority: CN
Inventors: 王立群; 顾翔
Original assignee: SHANGHAI TUSHENG INVESTEMENT CONSULTING CO Ltd
Current assignee: SHANGHAI TUSHENG INVESTEMENT CONSULTING CO Ltd
Priority date: 2010-10-22
Filing date: 2010-10-22
Publication date: 2011-05-18
Anticipated expiration: 2020-10-22

Abstract

The utility model discloses a system for homogenizing the slurry material of a battery with high efficiency, which comprises a dryer, powder metering and feeding equipment, an advance homogenizing and stirring tank, a circular homogenizer and a focusing type ultrasonic disperser which are sequentially connected, wherein the focusing type ultrasonic disperser is connected with the advance homogenizing and stirring tank, and the advance homogenizing and stirring tank is connected with a vacuum system and a cooling temperature-control system. Moreover, the circular homogenizer contains two metal turntables, wherein a plurality of homogenizing cavities with different clearances are arranged between the two metal turntables. The utility model can effectively solve the conditions of long dispersing and homogenizing time, material aggregation and poor homogeneity occurring in the preparation process of the slurry material of the battery. Meanwhile, the mixing and stirring time of the slurry material of the battery is reduced.

Description

A kind of high-efficiency battery slurry homogeneous system

Technical field

The utility model relates to a kind of system of high-efficiency battery slurry homogeneous, particularly relate to cell size adjustable gaps, a plurality of different accuracies totally-enclosed homogeneous chamber series connection high speed circulation homogeneous and focus on the cavitation system in conjunction with ultrasonic wave, can greatly improve the mixing uniformity of cell size, improve the battery end product quality.

Background technology

China has become lithium ion battery big producing country, and it is hundreds of how tame that battery production factory sum reaches, and total output reaches more than billions of ampere-hours.But China's lithium ion battery production technology never has core technology, this mainly is owing to domestic strength aspect Electromechanical Control also has gap than Japan and Korea S, some producer's initial stage insufficient investments of while, the technology that is adopted is elementary manual production mode mostly, the quality control difficulty is big.This reason just, China's lithium ion battery can only occupy international lithium ion battery low-end market.And the committed step of lithium ion battery quality control is the making of electrode slice, wherein the making of electrode slurry is crucial, according to the sum of China current battery manufacturer with may newly go up lithium ion battery producer quantitative analysis in recent years, lithium ion battery preparing electrode paste machinery will have very big market prospects.The required pulping equipment of general medium-sized battery enterprise greatly about about 4, the therefore annual demand that hundreds of equipment are arranged, particularly in recent years, power lithium-ion battery market rapidly increases, and will be more to the demand of this equipment.

The production equipment of at present traditional cell size is step planetary stirrer mixing arrangement, has its relative defective, shows:

1, batch dispersing technology, the mixing jitter time is long, and energy consumption is big;

2, mixing efficiency is low, and a little less than the shearing force, the energy input is inhomogeneous, and gained slurry particle diameter distributes wide, unstable product quality;

3, dispersion efficiency is low, and the micro powder in the slurry mixes very easily with liquid phase and reunites, and causes properties of product inconsistent;

4, material adds the employing manual type, pollutes greatly, and cleaning is inconvenient and air is long time of contact.

The utility model content

Because the problems referred to above that prior art exists, the utility model proposes a kind of high-efficiency battery slurry homogeneous system, it is long to solve dispersion, homogenizing time that cell size taken place in preparation process effectively, material is reunited, the situation that homogenieity is bad, simultaneously, reduce the mixing mixing time of cell size significantly.

To achieve these goals, the system of a kind of high-efficiency battery slurry homogeneous of the present utility model, comprise the drier, powder metering adding equipment, pre-homogeneous agitator tank, circulation homogenizer, the focusing ultrasonic disperser that connect successively, this focusing ultrasonic disperser is connected with this pre-homogeneous agitator tank, described pre-homogeneous agitator tank is connected with a vacuum system and a cooling temperature control system, and described circulation homogenizer comprises 2 metal rotary disk, is provided with the homogeneous chamber of some different gap between 2 metal rotary disk.

As further feature of the present utility model, be processed with hundreds of homogeneous grooves on the chamber wall in described homogeneous chamber.

As further feature of the present utility model, the distance between described 2 metal rotary disk is adjustable between several microns to tens of microns.

Owing to adopt above technical scheme, high-efficiency battery slurry homogeneous system of the present utility model can carry out full-automatic, totally-enclosed, low energy consumption ground at short notice to cell size and mix and homogeneous, reaches the dispersion of cell size and the requirement of mixing uniformity.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structure chart of circulation homogenizer in the utility model;

Fig. 3 A is the sectional view of the homogeneous groove in the utility model;

Fig. 3 B is the side view of the homogeneous groove among Fig. 3 A.

Among the figure, 1. drier, 2. powder metering adding equipment, 3. pre-homogeneous agitator tank, 4. vacuum system, 5. cooling temperature control system, 6. circulation homogenizer, 7. efficient focusing ultrasonic wavelength-division is spread device, 8. import, 9. high shear fracture area, 10. homogeneous chamber, 11. outlets, 12. motors, 13. homogeneous grooves

The specific embodiment

The utility model is described in further detail with specific embodiment with reference to the accompanying drawings below:

As shown in Figure 1, a kind of high-efficiency battery slurry homogeneous system of the present utility model, comprise the high-temperature dryers 1 that connects successively, powder metering adding equipment 2, pre-homogeneous agitator tank 3, circulation homogenizer 6, efficient focusing ultrasonic disperser 7, this efficient focusing ultrasonic disperser 7 is connected with this pre-homogeneous agitator tank 3, pre-homogeneous agitator tank 3 is connected with a vacuum system 4 and a cooling temperature control system 5, and circulation homogenizer 6 comprises 2 metal rotary disk, be provided with some homogeneous chamber 10 between 2 metal rotary disk, the gap difference in homogeneous chamber 10, the chamber wall in homogeneous chamber is provided with some homogeneous groove 13 (as 3A, shown in the 3B), the distance between 2 metal rotary disk be several microns to adjustable between tens of microns.

The battery powder material dries through high-temperature dryers 1, by powder metering adding equipment 2, add to pre-homogeneous agitator tank 3, pre-homogeneous agitator jar 3 carries out premixed simultaneously and stirs, 4 pairs of pre-homogeneous agitator tanks 3 of vacuum system vacuumize guarantees that jar interior air is few as far as possible, the temperature control that coolant jacket and the external refrigeration water of cooling temperature control system 5 by pre-homogeneous agitator tank 3 carries out slurry is in case slurry produces high temperature in whipping process.Material enters efficiently, enters efficient focusing ultrasonic disperser 7 behind homogenizer 6 homogeneous that circulate at a high speed and further disperse by pre-homogeneous agitator 3 lower part outlets, and gets back to pre-homogeneous agitator 3, and circulating so repeatedly meets the demands up to the material homogeneous.

As shown in Figure 2, slurry from pre-homogeneous agitator tank 3 bottoms from efficiently, the import 8 of homogenizer 6 of circulating at a high speed enters homogenizer, its by a motor 12 as power source, at first directly enter high shear fracture area 9, by a kind of Special Mixed reducing mechanism, with some the big powder balls in the fluid, grume, size particles such as agglomerate are broken rapidly, and will be the material of dispersion and fining be pressed into homogeneous at different levels chamber 10 again and disperse, each homogeneous chamber 10 is by being made up of hundreds of homogeneous grooves 13, and the precision between 10, two metal rotary disk in the one-level that stretches out more homogeneous chamber is high more, tooth pitch is more little, linear velocity is long more, and material is even more, and fluid progressively extends to the line of radially wrirting music simultaneously.Direction speed moment of every one-level fluid changes, and be subjected to the up to ten million inferior high-speed mixing of per minute, shearing, friction, crush and grind, particle pulverizing etc., come out from exporting 11, thereby make material fully reach the purpose of dispersion, pulverizing, emulsification, homogeneous, refinement.

As shown in Figure 1, slurry is by efficient, homogenizer 6 circulates at a high speed, enter efficient focusing ultrasonic disperser 7, moment at contact ultrasonic vibration luffing bar focusing surface will be produced " ultrasonic cavitation " phenomenon, the micro-bubble (cavitation nucleus) that promptly refers to be present in the liquid vibrates under the effect of ultrasonic field, growth is also constantly assembled the sound field energy, when energy reaches certain threshold value, sharply collapse and discharge huge energy of cavitation bubble, this cavitation effect can produce thousands of, even up to ten thousand atmospheric shock waves, impact mixed liquor continuously, make solid and liquid mixing in the mixed liquor, be uniformly dispersed.Come back to pre-homogeneous agitator tank by the slurry behind the homogeneous from outlet and enter the next homogeneous flow process of mixing.

But the above-mentioned specific embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.

Claims

1. high-efficiency battery slurry homogeneous system, it is characterized in that: comprise the drier, powder metering adding equipment, pre-homogeneous agitator tank, circulation homogenizer, the focusing ultrasonic disperser that connect successively, this focusing ultrasonic disperser is connected with this pre-homogeneous agitator tank, described pre-homogeneous agitator tank is connected with a vacuum system and a cooling temperature control system, and described circulation homogenizer comprises 2 metal rotary disk, is provided with the homogeneous chamber of some different gap between 2 metal rotary disk.

2. homogeneous system according to claim 1 is characterized in that: be processed with hundreds of homogeneous grooves on the chamber wall in described homogeneous chamber.

3. homogeneous system according to claim 2 is characterized in that: the distance between described 2 metal rotary disk is adjustable between several microns to tens of microns.