CN109580983A - A kind of sieving measurement of rate of flow method of pulp of lithium ion battery - Google Patents
A kind of sieving measurement of rate of flow method of pulp of lithium ion battery Download PDFInfo
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- CN109580983A CN109580983A CN201811546137.1A CN201811546137A CN109580983A CN 109580983 A CN109580983 A CN 109580983A CN 201811546137 A CN201811546137 A CN 201811546137A CN 109580983 A CN109580983 A CN 109580983A
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- slurry
- storage tank
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- pulp
- lithium ion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
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- Aviation & Aerospace Engineering (AREA)
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides a kind of sieving measurement of rate of flow methods of pulp of lithium ion battery, it is the following steps are included: the air valve for 1) opening slurry storage tank is passed through pressure stabilizing gas into slurry storage tank, it is then turned off air valve, then it opens after outlet valve is deflated and turns off outlet valve, then open feed cap again；2) slurry pours into slurry storage tank, installs sieve in the discharge outlet of slurry storage tank, closes discharge port；3) the feeding air pressure for simulating coating machine opens air valve and continues to be passed through pressure stabilizing gas into slurry storage tank, after air pressure reaches setting numerical value and keeps stablizing, open discharge port, the slurry for picking up outflow, starts simultaneously at timing, closes discharge port immediately when reaching the setting value of discharging time；4) it weighs to the slurry of outflow, the stock quality flowed out in unit of account time and unit sieve screen area obtains the flow velocity of slurry.The present invention can effectively improve the screening efficiency of slurry compared to the prior art, prevent the network blocking phenomenon of slurry.
Description
Technical field
The present invention relates to field of lithium ion battery, and in particular to a kind of sieving measurement of rate of flow side of pulp of lithium ion battery
Method.
Background technique
The production process of lithium ion battery include be homogenized, be coated with, rolling, cutting, winding, fluid injection, sealing, preliminary filling, aging
And processes, the situation of each process processing procedure such as sorting can have an impact battery performance.Wherein, painting process is to production capacity and pole piece
Consistency be affected, whether coating smooth to determine back segment process speed of production, and whether coating pole piece surface density uniformly determines
The consistency of battery core capacity is determined.Therefore, painting process produces lithium ion battery most important.
The character of slurry largely affects the stability of coating.General lithium ion battery produces painting process
In, usually slurry is squeezed into buffer tank by diaphragm pump, slurry generally uses 100-200 mesh screen mistake when passing through diaphragm pump
Sieve, slurry in buffer tank filter out particle that may be present by screw pump conveying, using 80-150 mesh screen, slurry into
Enter coating machine die head to be coated.For character stabilization, smoothly slurry, the pole piece consistency for being coated with out are preferable for sieving.So
And slurry poor for character, that sieving is difficult, the consistency of ordinary circumstance inferior pole piece is also poor, simultaneously because sieving is difficult,
It is easy to that sieving network blocking phenomenon occurs, production spreading mass network blocking is mainly caused by following factor: (1) slurry settles；(2) it starches
Material dispersion is uneven；(3) dry mixing process slurry binder is not completely dissolved；(4) there are larger particles in slurry；(5) contain in slurry
More extremely fine particle leads to particle agglomeration；(6) for sieve itself due to using overlong time, mesh is difficult to clean defective material；
(7) conveying pump power is smaller；(8) conveyance conduit blocks.
Above-mentioned slurry network blocking can seriously affect production efficiency, need to readjust homogenate technique, using the behaviour such as sieving
Make examination to apply, in this way can neither rapid evaluation slurry be sieved effect, and will increase slurry scraps probability, to influence equipment just
It is often used.
Summary of the invention
In consideration of it, can effectively be mentioned the present invention provides a kind of sieving measurement of rate of flow method of pulp of lithium ion battery
The screening efficiency of high slurry prevents the network blocking phenomenon of slurry.
For this purpose, the present invention provides a kind of sieving measurement of rate of flow methods of pulp of lithium ion battery comprising following steps:
1) outlet valve for closing slurry storage tank, covers the feed cap of slurry storage tank, opens the air valve of slurry storage tank
It is passed through pressure stabilizing gas into slurry storage tank, is then turned off air valve, then opens after outlet valve is deflated and turns off outlet valve, then
Feed cap is opened again；
2) slurry for taking homogenate process to prepare pours into slurry storage tank, feed cap is covered, in the discharging of slurry storage tank
Sieve is installed at mouthful, closes discharge port；
3) the feeding air pressure for simulating coating machine opens air valve and continues to be passed through pressure stabilizing gas into slurry storage tank, to air pressure
Reach setting numerical value and keep after stablizing, opens discharge port, pick up the slurry of outflow, start simultaneously at timing, when reaching discharging
Between setting value when close discharge port immediately；
4) it weighs to the slurry of outflow, the stock quality flowed out in unit of account time and unit sieve screen area obtains
To the flow velocity of slurry.
Further, after obtaining the flow rate of slurry in step 4), continue to be changed without sieve, be repeated according to aforementioned operation more
It is secondary, the change in flow of more each slurry.
Further, it is repeated 3-5 times according to aforementioned operation.
Further, after obtaining the flow rate of slurry in step 4), the slurry of outflow is poured into slurry storage tank, replaces mesh number
Bigger sieve obtains the flow velocity of slurry according to step, compares the variation of flow velocity under the sieve of different meshes.
Further, the mesh number of sieve is successively tested from small to large in the range of 80-200 mesh.
Further, in step 1), after pressure stabilizing gas is passed through into slurry storage tank, also slurry storage tank is carried out airtight
Property test.
Further, in step 3), the air pressure of slurry storage tank is less than 1MPa.
Further, in step 3), the setting value of discharging time is 30-120 seconds.
A kind of sieving measurement of rate of flow method of pulp of lithium ion battery provided by the present invention, is obtained through the above steps
Flow velocity illustrate that slurry is preferable by the sieving effect of the sieve if the same sieve change in flow of slurry flows is smaller；Replacement
Sieve, it can be estimated that sieve sieving effect of the slurry Jing Guo different meshes can relatively rapid judge slurry by this method
Sieving ability；So as to effectively improve the screening efficiency of slurry, the network blocking phenomenon of slurry is prevented.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is slurry involved in a kind of sieving measurement of rate of flow method of pulp of lithium ion battery provided in an embodiment of the present invention
Expect the structural schematic diagram of storage tank.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Embodiment one:
With reference to Fig. 1, a kind of sieving measurement of rate of flow method for pulp of lithium ion battery that the present embodiment one provides comprising with
Lower step:
1) outlet valve 125 for closing slurry storage tank 1, covers the feed cap 11 of slurry storage tank 1, opens slurry storage tank
1 air valve is passed through pressure stabilizing gas into slurry storage tank 1, is then turned off air valve 131, then opens after outlet valve 125 is deflated again
Outlet valve 125 is closed, then opens feed cap 11 again；
2) slurry for taking homogenate process to prepare pours into slurry storage tank 1, feed cap 11 is covered, in slurry storage tank 1
Sieve 124 is installed at discharge port 121, closes discharge port 121；
3) the feeding air pressure for simulating coating machine opens air valve 131 and continues to be passed through pressure stabilizing gas into slurry storage tank 1, to
Air pressure reaches setting numerical value and keeps after stablizing, and opens discharge port 121, picks up the slurry of outflow, start simultaneously at timing, when reaching
Discharge port 121 is closed when the setting value of discharging time immediately；
4) it weighs to the slurry of outflow, the stock quality flowed out in unit of account time and unit sieve screen area obtains
To the flow velocity of slurry.
Specifically, after obtaining the flow rate of slurry in step 4), continue to be changed without sieve 124, be repeated according to aforementioned operation more
It is secondary, the change in flow of more each slurry；
Again specifically, it is repeated 3-5 times according to aforementioned operation.
A kind of sieving measurement of rate of flow method of pulp of lithium ion battery, is obtained through the above steps provided by the present embodiment
The flow velocity obtained illustrates that slurry is preferable by the sieving effect of the sieve if the same sieve change in flow of slurry flows is smaller；More
Change sieve, it can be estimated that sieve sieving effect of the slurry Jing Guo different meshes can relatively rapid judge to starch by this method
The sieving ability of material；So as to effectively improve the screening efficiency of slurry, the network blocking phenomenon of slurry is prevented.
Embodiment two:
With reference to Fig. 1, the sieving flow velocity that a kind of pulp of lithium ion battery provided by Embodiment 2 of the present invention is shown in figure is surveyed
Determine method, also makees following improvement on the basis of the above embodiment 1: after obtaining the flow rate of slurry in step 4), outflow
Slurry pour into slurry storage tank 1, the bigger sieve 124 of replacement mesh number obtains the flow velocity of slurry according to step, more different
The variation of the lower flow velocity of the sieve 124 of mesh number；Specifically, the mesh number of sieve 124 in the range of 80-200 mesh from small to large successively
It is tested.By above-mentioned improvement, the accurate judgement of flow velocity may be implemented.
Embodiment three:
With reference to Fig. 1, the sieving flow velocity that a kind of pulp of lithium ion battery of the offer of the embodiment of the present invention three is shown in figure is surveyed
Determine method, also made following improvement on the basis of the above embodiment 1: in step 1), being passed through into slurry storage tank 1 steady
It calms the anger after body, air tightness test also is carried out to slurry storage tank 1；In step 3), the air pressure of slurry storage tank 1 is less than 1MPa；Step
It is rapid 3) in, the setting value of discharging time is 30-120 seconds.By above-mentioned improvement, the accurate of flow velocity can be further realized
Judgement.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery, which comprises the following steps:
1) outlet valve for closing slurry storage tank, covers the feed cap of the slurry storage tank, opens the slurry storage tank
Air valve is passed through pressure stabilizing gas into the slurry storage tank, is then turned off the air valve, after then opening the outlet valve deflation
The outlet valve is turned off, then opens the feed cap again；
2) slurry for taking homogenate process to prepare pours into the slurry storage tank, covers the feed cap, stores in the slurry
The discharge outlet of tank installs sieve, closes the discharge port；
3) the feeding air pressure for simulating coating machine opens air valve and continues to be passed through pressure stabilizing gas into the slurry storage tank, to air pressure
Reach setting numerical value and keep after stablizing, opens the discharge port, pick up the slurry of outflow, start simultaneously at timing, when reaching out
Expect to close the discharge port immediately when the setting value of time；
4) it weighs to the slurry of outflow, the stock quality flowed out in unit of account time and unit sieve screen area is starched
The flow velocity of material.
2. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 1, which is characterized in that obtain
After flow rate of slurry in step 4), continues to be changed without sieve, be repeated as many times according to aforementioned operation, the flow velocity of more each slurry
Variation.
3. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 2, which is characterized in that according to
Aforementioned operation repeats 3-5 times.
4. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 1, which is characterized in that obtain
After flow rate of slurry in step 4), the slurry of outflow is poured into the slurry storage tank, the bigger sieve of replacement mesh number, according to institute
The flow velocity that step obtains slurry is stated, the variation of flow velocity under the sieve of different meshes is compared.
5. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 4, which is characterized in that described
The mesh number of sieve is successively tested from small to large in the range of 80-200 mesh.
6. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 1, which is characterized in that described
In step 1), after being passed through pressure stabilizing gas in Xiang Suoshu slurry storage tank, air tightness test also is carried out to the slurry storage tank.
7. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 1, which is characterized in that described
In step 3), the air pressure of the slurry storage tank is less than 1MPa.
8. a kind of sieving measurement of rate of flow method of pulp of lithium ion battery according to claim 1, which is characterized in that described
In step 3), the setting value of the discharging time is 30-120 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811546137.1A CN109580983A (en) | 2018-12-17 | 2018-12-17 | A kind of sieving measurement of rate of flow method of pulp of lithium ion battery |
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| CN201811546137.1A CN109580983A (en) | 2018-12-17 | 2018-12-17 | A kind of sieving measurement of rate of flow method of pulp of lithium ion battery |
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