A kind of dispensing equipment for lithium ion battery
Technical field
The present invention relates to battery manufacturing technology field, relate in particular to a kind of dispensing equipment for lithium ion battery.
Background technology
Lithium ion battery batching is made up of four kinds of main material A, B, C, D, and existing dispensing equipment for lithium ion battery comprises glue jar, mixer, is communicated with by pipeline between glue jar and the mixer.
Below by formal specification A, the B of tabulation, name of material, state, the density of C, D representative.Negative pole
Code name |
Material |
State |
Density g/ml |
A |
Graphite |
Powder |
0.8 |
B |
Conductive agent |
Powder |
0.19 |
C |
CMC |
Powder |
0.4 |
D |
Deionized water |
Liquid |
1 |
Anodal
Code name |
Material |
State |
Density g/ml |
A |
Cobalt acid lithium |
Powder |
0.8 |
B |
Conductive agent |
Powder |
0.19 |
C |
PVDF |
Powder |
0.4 |
D |
NMP |
Liquid |
1 |
Existing lithium ion battery proportioning process flow process is with reference to figure 1, and A material, B material are powder, and A material, B material all are to pour mixer into after after manually sieving, directly by the manual weighing; The C material is that powder, D material are solvent, both by the manual weighing after, pour the glue jar into, the colloid mixture that comes out from the glue jar enters mixer and mixes, material gets final product discharging after stirring and reaching instructions for use.In whipping process, mainly carry out the viscosity adjusting to stirring material by manually directly adding a small amount of D material to mixer.
Dispensing equipment for lithium ion battery and distribution in the existing technology have the following disadvantages:
1, because the proportion of A material, B material is different, directly both are poured into the colloid mixture stirring of mixer and C material, D material, can cause A material, B mixing of materials inhomogeneous;
2, all metering, reinforced all be by artificial realization, efficient, error height;
3, owing to A material, B material all are powders, by manually directly pouring mixer into can produce the possibility that flour dust overflow causes environmental pollution and blast.
Summary of the invention
One of technical problem to be solved by this invention provides a kind of A material, B mixing of materials of can making and gets more uniform dispensing equipment for lithium ion battery.
Dispensing equipment for lithium ion battery of the present invention comprises glue jar, mixer, and the outlet of glue jar is communicated with the inlet of mixer, it is characterized in that, also comprises A material, B material mixer, and the outlet of A material, B material mixer is communicated with the inlet of mixer.
Described dispensing equipment for lithium ion battery comprises two groups of vacuum input units, and the input of two groups of vacuum input units is communicated with A material, B material barrel respectively, and the output of two groups of vacuum input units is communicated with A material, B material mixer.By vacuum vacuum input unit input A material, B material, can avoid flour dust overflow to cause environmental pollution and blast.
Described vacuum input unit comprises vacuum feeder, pans, vacuum conveyer tube road, vacuum feeder comprises vacuum pump and gas-filtering device, the inlet of vacuum feeder is communicated with A material barrel or B material barrel by the vacuum conveyer tube road, the outlet of vacuum feeder is communicated with the inlet of pans, and the outlet of pans is communicated with A material, B material mixer.Design can make air isolate by gas-filtering device in the vacuum feeder like this, and the material gravitate is fallen into pans.
Connect A material vibrating screen or B material vibrating screen between described pans and A material, the B material mixer, mixer is equipped with the electronic-weighing module, the electronic-weighing module by signal connects control centre, and control centre's signal controlling connects vibrating screen.Control centre can regulate vibration motor-vibro screen frequency size and control the speed that material adds by realizing the detection to the weight of mixer like this.
Also be connected with B material measuring tank between described B material vibrating screen and A material, the B material mixer, B material measuring tank signal connects control centre, and control centre's signal controlling connects the dispensing valve of B material measuring tank.Because the weight proportion of A, B weighing differs greatly, thus the B material has been increased by a cover measuring tank in addition, so that realize accurate measurement to the B material.
Described A material, B material mixer are double helix cone mixer, are provided with hotline heater in the double helix cone mixer tank body chuck.Double helix cone mixer can stir the different mixed material of proportion more even, and hotline heater can carry out heating, drying to the material that adds in the mixer.
Be connected with powder magnetic separator between described A material, B material mixer and the mixer.Irony in A material, the B mixtures of materials can be removed like this.
Be connected with colloid mixture between described glue jar and the mixer and carry membrane pump, colloid mixture measuring tank, colloid mixture measuring tank signal connects control centre, and control centre's signal controlling connects the dispensing valve of colloid mixture measuring tank.Can control the adding speed of colloid mixture automatically like this.
Described dispensing equipment for lithium ion battery also comprises D material storage tank, D material metering jar, connect D mass transport membrane pump between D material storage tank, the D material metering jar, D material metering jar is communicated with the glue jar, D material metering jar signal connects control centre, and control centre's signal controlling connects the dispensing valve of D material metering jar.Can control the adding speed of D material automatically like this.
Described dispensing equipment for lithium ion battery also comprises D material accommodometer measuring tank, D material accommodometer measuring tank is connected between D mass transport membrane pump and the mixer, D material accommodometer measuring tank signal connects control centre, and control centre's signal controlling connects the dispensing valve of D material accommodometer measuring tank.Can realize adding automatically a small amount of D material like this to carry out the viscosity adjusting to stirring material.
Described dispensing equipment for lithium ion battery also comprises C material metering jar, C material vibrating feeder (conveyer), C material metering jar is communicated to mixer via C material vibrating feeder (conveyer), C material metering jar signal connects control centre, and control centre's signal controlling connects C material vibrating feeder (conveyer).Can control the speed that material adds by regulating C material vibrating feeder (conveyer) frequency size like this.
The valve of described D material metering jar, D material accommodometer measuring tank, colloid mixture measuring tank is made up of big or small baiting valve.Can realize accurate control like this,, when injecting material reaches set point, close big baiting valve again, open little baiting valve earlier by opening big baiting valve blowing to blowing.
Described mixer is provided with the nitrogen input port.Can guarantee that like this material does not contact with air, chemical reaction takes place.
Described control centre comprises computer, touch-screen, measuring instrument instrument, alarm, and computer is connected with touch-screen, measuring instrument instrument, alarm signal respectively.Can realize running status detection automatically, troubleshooting, automatic control etc. to whole proportioner like this.
The present invention is owing to set up A material, B material mixer, so can before A material, B material are poured mixer into, in mixer, both be mixed stirring earlier, the A material that comes out in the mixer, the mixture of B material, the colloid mixture that enters mixer and C material, D material again stirs, can make A material, the B mixing of materials of lithium ion battery more even like this, thereby improve the product quality of lithium ion battery.
Description of drawings
Fig. 1 is a process chart of the prior art.
Fig. 2 is the process chart of the embodiment of the invention.
Fig. 3 is the structured flowchart of the embodiment of the invention.
Fig. 4 is the electric control structure block diagram of the embodiment of the invention.
Among the figure: 1, material barrel, 2, the vacuum conveyer tube road, 3, A material vacuum feeder, 4, A material pans, 5, A material material screening machine, 6, double worm mixer, 7, B material vacuum feeder, 8, B material pans, 9, B material material screening machine, 10, B material metering jar, 11, hotline heater, 12, powder magnetic separator, 13, homogenizer, 14, D material accommodometer measuring tank, 15, the colloid mixture measuring tank, 16, C material metering jar, 17, vibrating feeder (conveyer), 18, D material metering jar, 19, the glue jar, 20, colloid mixture is carried membrane pump, 21, D material storage tank.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 3, the dispensing equipment for lithium ion battery in the present embodiment comprises: material barrel 1, vacuum conveyer tube road 2, A material vacuum feeder 3, A material pans 4, A material material screening machine 5, double worm mixer 6 (on sale on the double worm mixer market), B material vacuum feeder 7, B material pans 8, B material material screening machine 9, B material metering jar 10, hotline heater 11, powder magnetic separator 12, homogenizer 13, D material accommodometer measuring tank 14, colloid mixture measuring tank 15, C material metering jar 16, vibrating feeder (conveyer) 17, D material metering jar 18, glue jar 19, colloid mixture is carried membrane pump 20, D material storage tank 21.
The input in vacuum conveyer tube road 2 is an input port, places in the material barrel 1, and material barrel 1 can be placed A material or B material as required; The output port in vacuum conveyer tube road 2 is two, is communicated with A material vacuum feeder 3, B material vacuum feeder 7 respectively.A material vacuum feeder 3, B material vacuum feeder 7 all comprise vacuum pump and gas-filtering device, and the outlet of A material vacuum feeder 3 is communicated with the inlet of A material pans 4, and the outlet of B material vacuum feeder 7 is communicated with the inlet of B material pans 8.The outlet of A material pans 4 connects the inlet of A material material screening machine 5, the outlet of B material pans 8 connects the inlet of B material material screening machine 9, the outlet of A material material screening machine 5 connects the inlet of double worm mixer 6 (being A material, B material mixer), the outlet of B material material screening machine 9 connects the inlet of B material metering jar 10, and the outlet of B material metering jar 10 connects the inlet of double worm mixer 6.B material metering jar 10 signals connect control centre, and control centre's signal controlling connects the dispensing valve of B material measuring tank 10.Double helix cone mixer 6 has the quadruplet fixed support, on each support, be separately installed with the electronic-weighing module, electronic scale is sent to control centre by analog signals the vibrating screen frequency is controlled, the speed that the effect of vibrating screen is not only sieved and handled but also can control the material adding by adjusting vibrating motor frequency size material, thus it is accurate to guarantee to add weight of material.Be provided with hotline heater 11 in the double helix cone mixer 10 tank body chucks.Double helix cone mixer 10 is communicated with homogenizer 13 via powder magnetic separator 12.
D material storage tank 21 is communicated with D material metering jar 18, D material accommodometer measuring tank 14 via D mass transport membrane pump, and D material accommodometer measuring tank 14 is communicated with vacuum stirring device 13, and D material metering jar 18 is communicated with glue jar 19.C material metering jar 16 is communicated with glue jar 19 via C material vibrating feeder (conveyer) 17.Glue jar 19 carries membrane pump 20, colloid mixture measuring tank 15 to be communicated with vacuum stirring device 13 via colloid mixture.C material metering jar 16, D material metering jar 18, D material accommodometer measuring tank 14, colloid mixture measuring tank 15 signals connect control centre, and control centre's signal controlling connects the dispensing valve and the C material vibrating feeder (conveyer) 17 of described measuring tank.The valve of described D material metering jar 18, D material accommodometer measuring tank 14, colloid mixture measuring tank 15 is made up of big or small baiting valve.Described homogenizer is provided with the nitrogen input port.Described D material metering jar 18, D material accommodometer measuring tank 14, colloid mixture measuring tank 15, C material metering jar 16 adopt the loss of weight measuring pump.
Sketch the running and the operation logic of the dispensing equipment for lithium ion battery among the embodiment below with reference to Fig. 2, Fig. 3.
Mix---two kinds of different powder materials of A, B are placed on unpack the district earlier, material barrel 1 capping is opened, manually with in the vacuum conveyer tube road 2 initiating terminal insert charging baskets, start vacuum feeder 3,7, in vacuum feeder, produce negative pressure this moment, be subjected to negative pressure influence material and air mixture enters in the vacuum feeder by pipeline, air is isolated by accurate gas-filtering device in the vacuum feeder, the material gravitate is fallen in the pans 4,8.Open A material pans 4 and B material pans 8 bleeder valves respectively, Vibration on Start-up sieve 5,9, enter in the double helix cone mixer 6 behind the vibrating screen 5 of A material by 100 eye mesh screens, control centre can control the speed that material adds according to the Signal Regulation vibrating motor frequency size of electronic-weighing module, thereby it is accurate to guarantee to add weight of material.Because the weight proportion of A, B weighing differs greatly, usually A material adding weight is more than the 300Kg, it is about 2Kg that the B material adds weight, the error that is produced is also big because range differs greatly, and therefore uses the projection electronic weighing module of the different ranges of two covers to guarantee that the weight precision that adds separately is controlled when design respectively.Increased by a cover measuring tank 10 during the B material metering in addition, same method B material joins in the double helix cone mixer after entering 10 accurate measurements of B material metering jar by vibrating screen 9 again.Hotline heater 11 can carry out heating, drying to the material that adds in the machinery in the double helix cone mixer tank body chuck, and can vacuumize the stirring operation for a long time.First nitrogen injection material is protected before discharging, restarts double helix and mixes the cone bleeder valve, and material mixes the output of cone mixer discharging opening by double helix, joins homogenizer 13 again after entering powder magnetic separator 12 deironing.
Glue-manual operation joins the C material in the measuring tank 16, system adopts the loss of weight measurement Law to measure, start measuring tank 16 discharging opening valves and vibrating feeder (conveyer) 17, material enters in the glue jar with vibrating feeder (conveyer), the adjusting of vibrating feeder (conveyer) 17 amplitudes is controlled the speed that adds material by measuring tank 16 Weighing module feedback signals; The D material is that a kind of solvent is at first by manually joining in the storage tank 21, pump to measuring tank 14,16 respectively by diaphragm pump again, three electronic-weighing modules are housed on each measuring tank, switch by measuring tank Weighing module feedback signal control baiting valve, adopt big or small baiting valve to carry out blowing, by 90% of big baiting valve control injecting material set point, close big baiting valve and restart little baiting valve when injecting material reaches setting weight 90%, thereby it is controlled to make material add precision.System by automatic control according to a certain percentage, add indegree, add sequencing two kinds of materials of C, D are joined in the glue jar 19.Glue jar 19 is a totally-enclosed stirred vessel jar; its stirring motor is provided with height quick-action luggage and puts; adding the high speed dispersion cutting knife on the stirring vane is primarily aimed at high viscosity colloid object and disperses; and can under vacuum state, long-time stirring not produce any leakage; can inject suitable nitrogen when production in the time of need protecting material and enter in the glue jar, guarantee that material does not contact with air.Open bleeder valve after material has stirred, start colloid mixture and carry membrane pump 20 that the colloid material is pumped into to carry out in the measuring tank 15 entering in the homogenizer 13 after the accurate measurement.
Slurrying-after A+C, C+D mixture join in the mixer 13 respectively, start mixer and carry out high-speed stirred is in operation and repeatedly carries out the viscosity adjusting to stirring material, mainly injects a spot of solvent by measuring tank 14 in mixer.After reaching instructions for use, material gets final product discharging when stirring.
Dispensing equipment for lithium ion battery among the embodiment can adopt full-automatic electric control system, with reference to figure 4.Control centre is furnished with computer, the computer application ancestral attitude WICC of function software, computer passes through fieldbus PROFIBUS and PLC (programmable controller), each instrument and meter connection carrying out image data and control such as touch-screen, frequency converter, electronic scale, temperature, pressure, liquid level sensor; Connect executive components such as electromagnetically operated valve, motor by PLC and carry out field control and management.Control centre can control collection, in real time and historical data processing, warning and security mechanism, production procedure are controlled automatically and printout etc. in real time to the production scene equipment operating data.
Dispensing equipment for lithium ion battery among the embodiment has the following advantages:
1, full-automatic operation, high-precision measuring has changed loaded down with trivial details, the uncontrollable pattern of material metering precision of original manual batching operation, can make historical record and establish corresponding alarm all service datas;
2, high reliability, stable, safety, conveying system are operations under fully airtight environment, will not the characteristic of material be damaged, and maximum benefit are not pollute, and promptly do not have flour dust overflow to cause the possibility of environmental pollution and blast.
3, solve powder material and transmitted professional problems such as difficulty;
4, single between operation, be easy to safeguard.
The foregoing description is further describing that the present invention is done, and can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.