CN202495529U - Manufacturing equipment of power lithium ion battery cathode materials - Google Patents
Manufacturing equipment of power lithium ion battery cathode materials Download PDFInfo
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- CN202495529U CN202495529U CN2012201214220U CN201220121422U CN202495529U CN 202495529 U CN202495529 U CN 202495529U CN 2012201214220 U CN2012201214220 U CN 2012201214220U CN 201220121422 U CN201220121422 U CN 201220121422U CN 202495529 U CN202495529 U CN 202495529U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses manufacturing equipment of power lithium ion battery cathode materials and aims at improving quality of power lithium ion battery cathode materials and lowering labor intensity of operators. The manufacturing equipment is provided with a material storage tank, a mixing machine, a sieving machine and a packing machine. A feed pipe and the material storage tank of the manufacturing equipment are connected through a pipeline in a sealed mode, the material storage tank and the mixing machine are connected through a pipeline in a sealed mode, the mixing machine and the sieving machine are connected through a pipeline in a sealed mode, and the sieving machine and the packing machine are connected through a pipeline in a sealed mode. A controller which is disposed on the manufacturing equipment is respectively connected with the mixing machine, the sieving machine and the packing machine. Compared with the prior art, the manufacturing equipment enables the material storage tank, the mixing machine, the sieving machine and the packing machine to be connected in a sealed mode, exerts control through the controller, achieves automatic production, conveying, mixing in proportion, sieving and magnet-removing packing in a sealed environment, improves work efficiency, enables a workshop to be dustless, lowers labor intensity, workshop noise and energy consumption, and improves quality of power lithium ion battery cathode materials.
Description
Technical field
The utility model relates to the manufacturing equipment of a kind of manufacturing equipment of cell negative electrode material, particularly a kind of cathode material of lithium-ion power battery.
Background technology
Along with the small portable consuming device; And energy saving and environment friendly power vehicle constantly develops; To the energy density and the capacity of battery and cell negative electrode material, reach high temperature coefficient safe in utilization and proposed increasingly high requirement, like this battery material fineness, particle size distribution and magnetic thing impurity content are had higher requirement; Research shows, with negative material through proportioning, mixing, remove mechanical treatment such as magnetic and can change granular size, particle size uniformity or distributivity.The particle size distribution of negative material is controlled within the scope of technological requirement; The negative material size granularity that obtains like this is even; Granule is populated, increases substantially the specific capacity of lithium ion battery negative material, the security performance that high temperature uses; Reduce its irreversible capacity, improved the pole piece processing technology simultaneously.Therefore lithium-ion-power cell materials processing needs more accurate conveying, and proportioning is mixed, and screening removes disk pack dress treatment process to satisfy the performance requirement of battery material; And traditional treatment process is independent separately; Operation needs manual work to be transported to subsequent processing after accomplishing, cause workshop dust from flying, distributing precision poor, remove magnetic weak effect etc., and energy consumption is high, waste is big; Cause also simultaneously that labor intensity of operating personnel is big, poor working environment, complicated operation; The problem that production efficiency is lower, and be easy to bring into impurity in the material transportation of opening wide, influenced the quality of material.
Summary of the invention
The purpose of the utility model provides a kind of manufacturing equipment of cathode material of lithium-ion power battery, and the technical problem that solve is to improve the cathode material of lithium-ion power battery quality, reduces labor intensity of operating personnel.
The utility model adopts following technical scheme: a kind of manufacturing equipment of cathode material of lithium-ion power battery; Be provided with material storage tank, mixer, screening machine and packing machine; Between the feed pipe of said manufacturing equipment and the material storage tank, between material storage tank and the mixer, between mixer and the screening machine, be connected through seal for pipe joints respectively between screening machine and the packing machine; Said manufacturing equipment is provided with controller, and said controller connects mixer, screening machine and packing machine respectively.
The material storage tank of the utility model is become with the second material tank battery by the first material storage tank, is connected through seal for pipe joints respectively between said feed pipe and the first material storage tank, between feed pipe and the second material storage tank, between the first material storage tank and the mixer and between the second material storage tank and the mixer.
The first material storage tank of the utility model is connected feed pipe through first materail tube with the second material seal of tube respectively; Between said first materail tube and second materail tube respectively through tertium quid material pipe and 4 materials pipe) be tightly connected; Said first materail tube and second materail tube are provided with first drain tap; Be respectively equipped with first level switch and terrium quid bit switch on the said first material storage tank; Be provided with first recoil valve at interval in the outlet of first material storage tank upper end, the said first material storage tank is through first valve and the first mixer feed pipe mixer that is tightly connected.
The second material storage tank of the utility model is respectively through the 5th materail tube and the 6th materail tube feed pipe that is tightly connected; Be tightly connected through the 7th materail tube and the 8th materail tube respectively between said the 5th materail tube and the 6th materail tube; On the 5th materail tube and the 6th materail tube, be provided with second drain tap; Be respectively equipped with tertium quid bit switch and the 4th level switch on the said second material storage tank; The outlet of said second material storage tank upper end is provided with second recoil valve at interval, and the said second material storage tank is through second valve and the second mixer feed pipe mixer that is tightly connected.
On the tertium quid material pipe of the utility model, the 4 materials pipe, be respectively equipped with operated pneumatic valve on the 7th materail tube and the 8th materail tube.
The junction of the mixer of the utility model and the first mixer feed pipe, the second mixer feed pipe is respectively equipped with the first heavy controller and the second heavy controller; Said mixer is provided with the material detector; Mixer is through the mixer discharge nozzle screening machine that is tightly connected; The junction of said mixer and mixer discharge nozzle is provided with the 3rd valve; The downside mixer discharge nozzle of said the 3rd valve is provided with quantitative controller, on the mixer discharge nozzle of quantitative controller lower end, is provided with the first charging valve.
Be provided with the first buffering storage tank and the second buffering storage tank between mixer of the utility model and the screening machine; Be respectively equipped with the first buffering storage tank feed pipe and the second buffering storage tank feed pipe that are tightly connected on the said first buffering storage tank and the second buffering storage tank; Be tightly connected through the 3rd buffering storage tank feed pipe and the 4th buffering storage tank feed pipe respectively between the said first buffering storage tank feed pipe and the second buffering storage tank feed pipe; Be respectively equipped with dispensing valve on the said first buffering storage tank feed pipe and the second buffering storage tank feed pipe; Through the buffering storage tank discharge nozzle screening machine that is tightly connected, said buffering storage tank discharge nozzle is provided with the 4th valve respectively for the said first buffering storage tank and the second buffering storage tank.
The 3rd buffering storage tank feed pipe of the utility model is provided with negative pressure valve, and the 4th buffering storage tank feed pipe is provided with the second charging valve.
Be provided with finished product storage tank between screening machine of the utility model and the packing machine; The said screening machine discharge nozzle finished product storage tank that is tightly connected; The finished product storage tank discharge nozzle of the finished product storage tank packing machine that is tightly connected; Said finished product storage tank is provided with tertium quid bit switch and the 4th level switch, and the junction of said finished product storage tank and finished product storage tank discharge nozzle is provided with evacuating valve, and said finished product storage tank discharge nozzle is provided with discharge valve.
Be respectively equipped with electromagnetism on feed pipe of the utility model and the screening machine discharge nozzle and remove electrical equipment.
The utility model compared with prior art; Employing is tightly connected material storage tank, mixer, screening machine and packaging machine; Control through controller; Under the environment of sealing, realize automated production, conveying, proportioning mixing, screening, remove the disk pack dress, increase work efficiency, make the workshop not have dust, reduce labour intensity, workshop noise, energy consumption, improved the quality of cathode material of lithium-ion power battery.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is to use the process chart of the utility model equipment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
As shown in Figure 1, the manufacturing equipment of the cathode material of lithium-ion power battery of the utility model is provided with material storage tank 1, mixer 2, screening machine 3 and packing machine 5 by process sequence.
The feed pipe 7 of said manufacturing equipment is provided with electromagnetism and removes electrical equipment 57; It is that first electromagnetism removes electrical equipment 58 that this electromagnetism removes electrical equipment 57; Feed pipe 7 is through first materail tube 10 and the 5th materail tube 22 material storage tank 1 that is tightly connected; This material storage tank 1 is made up of the first material storage tank 8 and the second material storage tank 9, and this first material storage tank 8 and the second material storage tank 9 are the funnel type structure.
Also be sealedly connected with second materail tube 11 on the said first material storage tank 8; Be tightly connected through tertium quid material pipe 12 and 4 materials pipe 13 respectively between this second materail tube 11 and first materail tube 10; Tertium quid material pipe 12 is arranged on the upper end of first materail tube 10 and second materail tube 11; 4 materials pipe 13 is arranged on the middle part of first materail tube 10 and second materail tube 11; Be respectively equipped with first operated pneumatic valve 141, second operated pneumatic valve 15 in the stage casing of tertium quid material pipe 12 and 4 materials pipe 13; On second materail tube 11 and the junction position of first materail tube 10, be respectively equipped with first drain tap 16 near the first material storage tank 8; On the first material storage tank 8, be respectively equipped with first level switch 17 and terrium quid bit switch 18, be provided with in the outlet upper end of the first material storage tank 8 first at interval recoil valve 19, the first material storage tanks 8 through first valves 20 and the first mixer feed pipe 21 mixer 2 that is tightly connected.
Be sealedly connected with the 6th materail tube 23 on the said second material storage tank 9; Be tightly connected through the 7th materail tube 24 and the 8th materail tube 25 respectively between the 6th materail tube 23 and the 5th materail tube 22; Be respectively equipped with the 3rd operated pneumatic valve 26, the 4th operated pneumatic valve 27 at the middle part of the 7th materail tube 24 and the 8th materail tube 25; Be respectively equipped with second drain tap 28 on the position, junction near the second material storage tank 9 on the 5th materail tube 22 and the 6th materail tube 23; On the second material storage tank 9, be respectively equipped with tertium quid bit switch 29 and the 4th level switch 30; The outlet of the second material storage tank 9 upper end be provided with second at interval recoil valve 31, the second material storage tanks 9 through second valves 32 and the second mixer feed pipe 33 mixer 2 that is tightly connected.
Said mixer 2 is the funnel type structure; Junction at the first mixer feed pipe 21 and the second mixer feed pipe 33 and mixer 2 is respectively equipped with first heavy controller 34, the second heavy controller 35; Side in mixer 2 lower ends near outlet is provided with material detector 351; Opposite side is then through the mixer discharge nozzle 39 buffering storage tank that is tightly connected; Junction at mixer 2 and mixer discharge nozzle 39 is provided with the 3rd valve 36, and the downside mixer discharge nozzle 39 of said the 3rd valve 36 is provided with quantitative controller 37, on the mixer discharge nozzle 39 of quantitative controller 37 lower ends, is provided with the first charging valve 38.
Said buffering storage tank has two; Be respectively the first buffering storage tank 40 and the second buffering storage tank 41; Be respectively equipped with the first buffering storage tank feed pipe 42 and the second buffering storage tank feed pipe 43 that are tightly connected on the said first buffering storage tank 40 and the second buffering storage tank 41; Be tightly connected through the 3rd buffering storage tank feed pipe 44 and the 4th buffering storage tank feed pipe 45 respectively between the first buffering storage tank feed pipe 42 and the second buffering storage tank feed pipe 43; On the 3rd buffering storage tank feed pipe 44, be provided with negative pressure valve 46; The 4th buffering storage tank feed pipe 45 is provided with the second charging valve 47; On the first buffering storage tank feed pipe 42 and the second buffering storage tank feed pipe 43 near the junction of the first buffering storage tank 40 and the second buffering storage tank 41 be respectively equipped with dispensing valve 48, the first buffering storage tanks 40 and the second buffering storage tank 41 respectively warp cushion storage tank discharge nozzle 49 screening machine 3 that is tightly connected, be provided with the 4th valve 50 cushioning on the storage tank discharge nozzle 49.
Also be provided with electromagnetism on the screening machine discharge nozzle 51 of said two screening machines 3 and remove electrical equipment 57; Screening machine discharge nozzle 51 finished product storage tank 4 that is tightly connected; The upper end of finished product storage tank 4 is provided with tertium quid bit switch 53, and the lower end is provided with the 4th level switch 54, is provided with evacuating valve 55 in the junction of finished product storage tank 4 and finished product storage tank discharge nozzle 52; Finished product storage tank discharge nozzle 52 is provided with discharge valve 56, the finished product storage tank discharge nozzle 52 of finished product storage tank 4 packing machine 5 that is tightly connected.
Said manufacturing equipment is provided with controller 58, and said controller 58 connects mixer 2, screening machine 3 and packing machine 5 respectively.
As shown in Figure 2; The course of work of the utility model is following: open negative pressure system and treat that negative pressure is when 0.007MPA; Equipment is opened first operated pneumatic valve 141, second operated pneumatic valve 15; Material is carried in (in the 10-200 rice) closed pipeline, removes magnetic and the granularity on-line detector comprehensive detection record to material through what electromagnetism removed electrical equipment 57.Close after second at 15-20 when first operated pneumatic valve 141, second operated pneumatic valve 15 time of opening, open first discharge valve 16, open time 8-20 and close after second; Move continuously with cocycle.When treating that the first material storage tank, 8 interior materials arrive first level switch 17, automatically switch to 8 operations of the second material storage tank, same with the operation operation principle of the first material storage tank 8.When two kinds of weight of material of A, B in the first material storage tank 8 and the second material storage tank 9 arrive the technique initialization requirement; The heavy information of meter that controller is passed on through first heavy controller 34, the second heavy controller 35 is opened first valve 20, after material requires standard according to a batch arrival setting, closes first valve 20.Start efficiently mixer 2 and mix, and open second valve 32 and heavily through the second heavy controller 35, after two kinds of materials are according to batch proportioning, close first valve 20 and second valve 32 automatically after, mixer 2 begins mixing, timing begins.After the time that arrives the controller setting; Through detect at 351 pairs of materials of line material detector and with controller batch set point check and correction when error is arranged (if carry out micro-control adjust to first valve, 20, first heavy controller 34 and mixer 2) when 100% meets batch standard, mixer 2 is out of service and open the 3rd valve 36.Get into autofeed and screening and remove the magnetic operation.Operational mode: open negative pressure valve 46, the first charging valve 38 and the second charging valve 47; Quantitatively control 37 operations this moment; When moving 18-22 after second; Open dispensing valve 48 after closing negative pressure valve 46, the first charging valve 38, the second charging valve 47 and quantitative controller 37; Be controlled at 9-10 and close automatically after second the running time of said dispensing valve 48, opens negative pressure valve 46, the first charging valve 38, the second charging valve 47 and quantitative controller 37 once more, more than is continuous circular flow.Convey materials to the first buffering storage tank 40 and the second buffering storage tank 41, (being controlled in the 200-400KG scope) opened screening machine 3 when arriving certain total amount, and opens the evenly feed screening continuously of the 4th valve 50.Controller requires screening machine 3 is carried out the amplitude check and correction through process batch.Do not sieve outside the impurity discharge sieve that requires reaching, qualified material is removed electrical equipment 57 processing back entering finished product storage tank 4 through 1200 Gausses' electromagnetism once more.When material arrives the height of the 4th level switch 54; Controller is opened evacuating valve 55 automatically, the air in the material is extracted out, and opened the discharge valve 56 automatic packing machines 5 that get into and pack; Controller is opened the pallet direction switch automatically and is risen by pallet; Automatically put bag and push folder bag simultaneously and carry secretly, when instrument shows zero district's scope, then the folder bag is opened baiting valve student material simultaneously (if evacuating valve 55 does not reach when requiring automatically; The controller transducer can be opened extract system automatically 2 times) blanking finishes the back nanometer rods and descends automatically and bleed, and (negative pressure of bleeding is controlled in the 0.01-0.02MPA) time of bleeding is controlled automatically.The back nanotube that finishes of bleeding rises a folder bag Time Delay Opening automatically.Loop ends gets into automatic closer and ordering neatly can be put in storage.
The utility model will be organized conveying equipment more and connect, and material gets into the next stage storage tank continuously, and automatic blending is transported to mixing; Screening removes the disk pack dress, and package unit is hermetically sealed; Automatically, omnidistance by controller monitoring, simple to operate; Only need every batch of end product quality index of input and output, handle the back through the central processing unit of controller and regulate feeding speed and material proportion weight automatically, after the high efficient mixed machine mixes, reach the quality standard of finished product.Get into screening, except that packing warehouse-in after the magnetic treatment automatically, the utility model production line is to lithium ion negative battery material special processing equipment and process units; Complete unit is realized the production of automation proportioning in airtight negative pressure system, reduced the dust of generation and bringing into of impurity in the process carrying, has promoted consistency of product greatly; The interval circle that becomes of particle size distribution; Make properties of product stable, improve security performance, and have energy-saving and environmental protection, saving manpower 50% above remarkable advantage; Production capacity improves more than 15%, and energy consumption descends more than 20%.
Claims (10)
1. the manufacturing equipment of a cathode material of lithium-ion power battery; Be provided with material storage tank (1), mixer (2), screening machine (3) and packing machine (5); It is characterized in that: between the feed pipe of said manufacturing equipment (7) and the material storage tank (1), between material storage tank (1) and the mixer (2), between mixer (2) and the screening machine (3), be connected through seal for pipe joints respectively between screening machine (3) and the packing machine (5); Said manufacturing equipment is provided with controller (58), and said controller (58) connects mixer (2), screening machine (3) and packing machine (5) respectively.
2. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 1; It is characterized in that: said material storage tank (1) is made up of the first material storage tank (8) and the second material storage tank (9), is connected through seal for pipe joints respectively between said feed pipe (7) and the first material storage tank (8), between feed pipe (7) and the second material storage tank (9), between the first material storage tank (8) and the mixer (2) and between the second material storage tank (9) and the mixer (2).
3. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 2; It is characterized in that: the said first material storage tank (8) is respectively through first materail tube (10) and second materail tube (11) feed pipe (7) that is tightly connected; Be tightly connected through tertium quid material pipe (12) and 4 materials pipe (13) respectively between said first materail tube (10) and second materail tube (11); Said first materail tube (10) and second materail tube (11) are provided with first drain tap (16); Be respectively equipped with first level switch (17) and terrium quid bit switch (18) on the said first material storage tank (8); Be provided with first recoil valve (19) at interval in the outlet of the first material storage tank (8) upper end, the said first material storage tank (8) is through first valve (20) and the first mixer feed pipe (21) mixer (2) that is tightly connected.
4. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 2; It is characterized in that: the said second material storage tank (9) is respectively through the 5th materail tube (22) and the 6th materail tube (23) feed pipe (7) that is tightly connected; Be tightly connected through the 7th materail tube (24) and the 8th materail tube (25) respectively between said the 5th materail tube (22) and the 6th materail tube (23); On the 5th materail tube (22) and the 6th materail tube (23), be provided with second drain tap (28); Be respectively equipped with tertium quid bit switch (29) and the 4th level switch (30) on the said second material storage tank (9); The outlet of the said second material storage tank (9) upper end is provided with second recoil valve (31) at interval, and the said second material storage tank (9) is through second valve (32) and the second mixer feed pipe (33) mixer (2) that is tightly connected.
5. according to the manufacturing equipment of any described cathode material of lithium-ion power battery of claim 1 to 4, it is characterized in that: said tertium quid material pipe (12), 4 materials pipe (13) are gone up, be respectively equipped with operated pneumatic valve (14) on the 7th materail tube (24) and the 8th materail tube (25).
6. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 5; It is characterized in that: said mixer (2) is respectively equipped with the first heavy controller (34) and the second heavy controller (35) with the junction of the first mixer feed pipe (21), the second mixer feed pipe (33); Said mixer (2) is provided with material detector (351); Mixer (2) is through mixer discharge nozzle (39) screening machine (3) that is tightly connected; Said mixer (2) is provided with the 3rd valve (36) with the junction of mixer discharge nozzle (39); The downside mixer discharge nozzle (39) of said the 3rd valve (36) is provided with quantitative controller (37), on the mixer discharge nozzle (39) of quantitative controller (37) lower end, is provided with the first charging valve (38).
7. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 6; It is characterized in that: be provided with the first buffering storage tank (40) and the second buffering storage tank (41) between said mixer (2) and the screening machine (3); The said first buffering storage tank (40) and second cushions and is respectively equipped with the first buffering storage tank feed pipe (42) and the second buffering storage tank feed pipe (43) that is tightly connected on the storage tank (41); Be tightly connected through the 3rd buffering storage tank feed pipe (44) and the 4th buffering storage tank feed pipe (45) respectively between the said first buffering storage tank feed pipe (42) and the second buffering storage tank feed pipe (43); The said first buffering storage tank feed pipe (42) and second cushions on the storage tank feed pipe (43) and is respectively equipped with dispensing valve (48); Through cushioning storage tank discharge nozzle (49) screening machine (3) that is tightly connected, said buffering storage tank discharge nozzle (49) is provided with the 4th valve (50) respectively for the said first buffering storage tank (40) and the second buffering storage tank (41).
8. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 7 is characterized in that: said the 3rd buffering storage tank feed pipe (44) is provided with negative pressure valve (46), and the 4th buffering storage tank feed pipe (45) is provided with the second charging valve (47).
9. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 8; It is characterized in that: be provided with finished product storage tank (4) between said screening machine (3) and the packing machine (5); Said screening machine discharge nozzle (51) finished product storage tank (4) that is tightly connected; The finished product storage tank discharge nozzle (52) of finished product storage tank (4) packing machine (5) that is tightly connected; Said finished product storage tank (4) is provided with tertium quid bit switch (53) and the 4th level switch (54), and said finished product storage tank (4) is provided with evacuating valve (55) with the junction of finished product storage tank discharge nozzle (52), and said finished product storage tank discharge nozzle (52) is provided with discharge valve (56).
10. the manufacturing equipment of cathode material of lithium-ion power battery according to claim 9 is characterized in that: be respectively equipped with electromagnetism on said feed pipe (7) and the screening machine discharge nozzle (51) and remove electrical equipment (57).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201214220U CN202495529U (en) | 2012-03-27 | 2012-03-27 | Manufacturing equipment of power lithium ion battery cathode materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201214220U CN202495529U (en) | 2012-03-27 | 2012-03-27 | Manufacturing equipment of power lithium ion battery cathode materials |
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| Publication Number | Publication Date |
|---|---|
| CN202495529U true CN202495529U (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201214220U Expired - Fee Related CN202495529U (en) | 2012-03-27 | 2012-03-27 | Manufacturing equipment of power lithium ion battery cathode materials |
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| Country | Link |
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| CN (1) | CN202495529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120117A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳市玖创科技有限公司 | Battery negative electrode powder material mixing device capable of demagnetization |
-
2012
- 2012-03-27 CN CN2012201214220U patent/CN202495529U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120117A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳市玖创科技有限公司 | Battery negative electrode powder material mixing device capable of demagnetization |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20170327 |