CN217093345U - Automatic filling system of EC solvent for lithium battery production - Google Patents
Automatic filling system of EC solvent for lithium battery production Download PDFInfo
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- CN217093345U CN217093345U CN202220906053.XU CN202220906053U CN217093345U CN 217093345 U CN217093345 U CN 217093345U CN 202220906053 U CN202220906053 U CN 202220906053U CN 217093345 U CN217093345 U CN 217093345U
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- tank body
- pipeline
- automatic
- lithium battery
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- 239000002904 solvent Substances 0.000 title claims abstract description 103
- 238000011049 filling Methods 0.000 title claims abstract description 40
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 47
- 238000003860 storage Methods 0.000 claims abstract description 39
- 238000005303 weighing Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000002425 crystallisation Methods 0.000 description 8
- 230000008025 crystallization Effects 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000011267 electrode slurry Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model provides a lithium cell production is with automatic filling system of EC solvent, include: the storage system comprises a constant temperature box and a storage container arranged in the constant temperature box; the metering system comprises a tank body, a material suction pipeline, a negative pressure unit and a weighing module; one end of the material suction pipeline is connected with a material inlet of the tank body, the other end of the material suction pipeline is connected with the material storage container, the negative pressure unit is connected with the tank body and used for providing negative pressure for the tank body so that a solvent in the material storage container is pressed into the tank body through the material suction pipeline, and the weighing module is used for weighing the weight of the solvent in the tank body; mixing arrangement, including mixer and conveying pipeline, the one end of conveying pipeline is connected with jar body bottom discharge mouth, and the other end of conveying pipeline is connected with the pan feeding mouth of mixer. The utility model discloses can solve EC solvent manual weighing, reinforced unstable problem of precision, and environmental pollution's problem.
Description
Technical Field
The utility model relates to a lithium cell production facility technical field especially relates to an automatic filling system of EC solvent for lithium cell production.
Background
The lithium ion battery pulping is generally divided into a feeding system and a homogenizing system, wherein the feeding system is used for adding various lithium ion battery raw materials including main materials, auxiliary materials and solvents into a stirrer according to a certain proportion for mixing and dispersing, and the stirrer is used for mixing and dispersing to form uniform slurry for coating. Most of the enterprises producing the lithium iron phosphate batteries use an EC solvent (ethylene carbonate) as a negative electrode slurry additive to solve the problem of negative electrode coating cracking. Because the EC solvent crystallizes at room temperature (crystallization at less than 35 ℃). When adding, need the manual work to put into the oven and melt the back, put on the electronic scale and measure, descend the agitator of mixer after the measurement again, pour into the mixer jar body and stir. Generally, 30-50 kg of EC solvent needs to be added at every time, the whole process is carried, metered and added manually, time and labor are wasted, the efficiency is low, the adding precision cannot be guaranteed, and dust escapes to pollute the workshop environment when the stirrer is opened.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an automatic filling system of EC solvent for lithium cell production for solve artifical EC solvent that adds, take trouble hard, add the unstable problem of precision, and polluted environment.
The technical scheme of the utility model is realized like this:
the utility model provides an automatic filling system of EC solvent for lithium cell production, include:
the storage system comprises a constant temperature box and a storage container arranged in the constant temperature box;
the metering system comprises a tank body, a material suction pipeline, a negative pressure unit and a weighing module; one end of the material suction pipeline is connected with a material inlet of the tank body, the other end of the material suction pipeline is connected with the material storage container, the negative pressure unit is connected with the tank body and used for providing negative pressure for the tank body so that a solvent in the material storage container is pressed into the tank body through the material suction pipeline, and the weighing module is used for weighing the weight of the solvent in the tank body;
mixing arrangement, including mixer and conveying pipeline, the one end of conveying pipeline is connected with jar body bottom discharge mouth, and the other end of conveying pipeline is connected with the pan feeding mouth of mixer.
On the basis of the above technical solution, preferably, the temperature in the incubator is set to 40 to 45 ℃.
Further, preferably, the storage system further comprises an iron removal filter arranged in the thermostat, and the iron removal filter is arranged on the material suction pipeline.
Further, preferably, the outer wall of the material suction pipeline and the outer wall of the material feeding pipeline which are positioned outside the constant temperature box are both provided with electric tracing bands.
Furthermore, preferably, the outer wall of the tank body is provided with a heat insulation sleeve, the heat insulation sleeve is provided with a water inlet and a water outlet, and the water inlet and the water outlet are used for circularly introducing hot water into the heat insulation sleeve.
On the basis of the technical scheme, it is preferred, be provided with feed valve on the material pipeline of inhaling between deironing filter and the storage container, negative pressure unit is connected with a jar body top through vacuum interface, is provided with vacuum valve on the vacuum interface, jar body top still is provided with level sensor, level sensor is used for the internal height liquid level of monitoring jar, and level sensor is connected with feed valve and vacuum valve respectively.
Further, preferably, the top of the tank body is further provided with a first pressure sensor, a respirator and a nitrogen interface, the first pressure sensor is used for monitoring the pressure in the tank body, the respirator is used for keeping the pressure in the tank body balanced, the nitrogen interface is used for being connected with a nitrogen source to provide nitrogen for the tank body, and a discharge port at the bottom of the tank body is provided with a proportion adjusting valve connected with a feeding pipeline.
Further, preferably, a second pressure sensor is further disposed on the feeding pipeline.
Preferably, the mixer is further provided with a charging hole for charging other slurry.
The utility model discloses following beneficial effect has for prior art:
(1) the utility model discloses an automatic filling system of EC solvent for lithium cell production can guarantee through the thermostated container that the EC solvent in the storage container does not take place the crystallization, provide the negative pressure for the jar body through the negative pressure unit, can impress the EC solvent in the storage container into the jar body, when filling the EC solvent to the mixer again, subtract heavy measurement to the EC solvent of filling into the mixer through weighing module, can realize the automatic filling of EC solvent, the artifical weighing of EC solvent has been solved, the unstable problem of feeding precision, simultaneously the EC solvent is in the filling process, whole course is in airtight environment, the problem of environmental pollution caused by the artifical EC solution that adds into the mixer has been avoided;
(2) the iron removal filter is arranged on the material absorption pipeline, so that iron-cutting particles in the EC solvent can be absorbed and filtered, and the purity of the solvent is ensured;
(3) electric tracing bands are arranged on the outer wall of the material suction pipeline and the outer wall of the material feeding pipeline outside the constant temperature box, so that the EC solvent can be kept in a liquid state in the pipeline conveying process all the time, and low-temperature crystallization is avoided to influence slurry preparation;
(4) the liquid level sensor is arranged at the top of the tank body, when the liquid level of the EC solvent reaches a high liquid level, the liquid level sensor can acquire a liquid level signal and transmit a stop signal to the feeding valve and the vacuum valve, the feeding valve and the vacuum valve are closed, and feeding into the tank body is stopped, so that the tank body can store a certain volume of the EC solvent, and the EC solvent can be conveniently filled into the stirring machine for many times;
(5) by arranging the nitrogen interface, the EC solvent in the tank body is conveyed into the stirrer through the conveying pipeline under the action of gravity and nitrogen micro-positive pressure, the weighing module is used for carrying out weight reduction metering on the EC solvent conveyed into the stirrer, when the filling value is close to a target value, the opening degree of the proportional control valve is reduced, the filling flow of the EC solvent is reduced, when the target value is reached, the proportional control valve is completely closed, and the EC filling is finished, so that the filling precision can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flow chart of the automatic EC solvent filling system for lithium battery production disclosed in the present invention;
fig. 2 is a schematic plane structure diagram of the material storage system disclosed by the present invention;
fig. 3 is a schematic plan view of the metering system of the present invention;
the attached drawings are as follows:
1. a material storage system; 11. a thermostat; 12. a storage container; 2. a metering system; 21. a tank body; 22. a suction pipeline; 23. a negative pressure unit; 24. a weighing module; 3. a mixing device; 31. a blender; 32. a feed line; 13. a deironing filter; s, an electric tracing band; 211. a thermal insulation sleeve; 212. a water inlet; 213. a water outlet; 221. a feed valve; 231. a vacuum valve; 214. a liquid level sensor; 215. a first pressure sensor; 216. a respirator; 217. a nitrogen interface; 321. a proportional regulating valve; 322. a second pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
In the process of manufacturing the lithium battery negative electrode slurry, an EC solvent (ethylene carbonate) is required to be mixed and stirred with other raw materials to form uniform negative electrode slurry so as to be coated. At the present stage, when the EC solvent is added, the EC solvent is generally manually weighed and then added into a stirrer for stirring, but at the present stage, 30-50 kg of the EC solvent needs to be added into the stirrer each time by manual work, the whole process is manually carried, metered and added, time and labor are wasted, the efficiency is low, the adding precision cannot be guaranteed, and meanwhile, because the EC solvent is manually added and mostly in a room-temperature environment, because the EC solvent is crystallized at the room-temperature environment (crystallization at the temperature lower than 35 ℃), manual re-melting is needed, the manual labor degree is increased. In addition, when the EC solvent is manually added, dust escapes to pollute the environment.
Therefore, the problems that melting is needed before EC solvent is filled, weighing is needed for manual filling, the handling and the adding are troublesome and labor-consuming, and the environment is polluted exist in the prior art.
Therefore, as shown in fig. 1, with reference to fig. 2 and 3, the utility model discloses a solve above-mentioned technical problem, disclose a lithium cell production is with automatic filling system of EC solvent, including storage system 1, metering system 2 and mixer 31.
The storage system 1 is used for storing an EC solvent to be filled, the storage system 1 comprises a constant temperature box 11 and a storage container 12 arranged in the constant temperature box 11, the temperature in the constant temperature box 11 is set to be 40-45 ℃, so that the constant temperature is kept, and the temperature is higher than the crystallization temperature of the EC solvent, so that the EC solvent in the storage container 12 is always in a liquid state, the filling operation is convenient to carry out at any time, meanwhile, the constant temperature box 11 is in a closed environment, and the phenomenon that external impurities enter the storage container 12 to pollute the EC solvent can be avoided. In this embodiment, the incubator 11 may also be a constant temperature plant or workshop, and the storage container 12 is a bucket or other container for holding solution.
And the metering system 2 is used for temporarily storing the EC solvent in the material storage system 1 and storing the EC solvent with a certain volume, so that the EC solvent can be accurately and quantitatively filled into the stirring machine 31.
The metering system 2 comprises a tank body 21, a material suction pipeline 22, a negative pressure unit 23 and a weighing module 24; tank 21 is made of all stainless steel and is used for temporary storage and metering of the EC solvent. One end of the material suction pipeline 22 is connected with the material inlet of the tank body 21, the other end of the material suction pipeline is connected with the material storage container 12, and the material suction pipeline 22 is an SUS304 stainless steel pipeline and used for conveying an EC solvent. The negative pressure unit 23 is connected to the tank 21 and configured to provide negative pressure to the tank 21 so that the solvent in the storage container 12 is pressed into the tank 21 through the suction pipe 22, in this embodiment, the negative pressure unit 23 is a negative pressure fan or a suction pump, and the weighing module 24 is a C6-level precision weighing sensor and configured to measure the weight of the EC solvent in the tank 21.
Mixing arrangement 3, including mixer 31 and feeding pipe 32, the one end of feeding pipe 32 is connected with jar body 21 bottom discharge gate, and the other end of feeding pipe 32 is connected with the pan feeding mouth of mixer 31. The mixer 31 receives the EC solvent in the can 21 through the feed pipe 32, and mixes and disperses the EC solvent with other raw materials while charging a predetermined amount of the EC solvent into the mixer 31, thereby forming a negative electrode slurry.
By adopting the technical scheme, the EC solvent in the storage container 12 can be ensured not to crystallize through the incubator 11, negative pressure is provided for the tank body 21 through the negative pressure unit 23, the EC solvent in the storage container 12 can be pressed into the tank body 21, the EC solvent is filled into the stirring machine 31 after the EC solvent with a certain volume is stored in the tank body 21, the EC solvent filled into the stirring machine 31 is subjected to weight loss measurement through the weighing module 24, automatic filling of the EC solvent can be realized, the problems of manual weighing and unstable feeding precision of the EC solvent are solved, and meanwhile, the EC solvent is in a closed environment in the whole filling process, so that the problem of environmental pollution caused by manual filling of the EC solution into the stirring machine 31 is avoided.
As some preferred embodiments, the storage system 1 further comprises an iron removal filter 13 disposed inside the oven 11, the iron removal filter 13 being disposed on the suction pipe 22. Therefore, the iron-cutting particles in the EC solvent can be adsorbed and filtered, and the purity of the solvent is ensured. In this embodiment, the deironing filter 13 is a dual channel, one for one, and is switched by a manual valve.
For some embodiments, the outer walls of the suction pipe 22 and the feeding pipe 32 outside the oven 11 are provided with electric tracing bands S (not shown). Therefore, the EC solvent can be always kept in a liquid state in the pipeline conveying process, and low-temperature crystallization is avoided to influence slurry preparation
Because a certain volume of EC solvent can be temporarily stored in the tank 21 for one time, the solvents can be injected into the stirrer 31 for multiple times, and when the EC solvent in the tank 21 is uniformly stirred by the stirrer 31 after the EC solvent is injected into the stirrer 31 for one time, in order to avoid crystallization of the EC solvent in the tank 21 due to temperature reduction, the outer wall of the tank 21 is provided with the thermal insulation sleeve 211, and the thermal insulation sleeve 211 is provided with the water inlet 212 and the water outlet 213. Therefore, the hot water inlet pipeline is connected through the water inlet 212, and the return water pipeline is connected through the water outlet 213, so that hot water can be circularly introduced into the heat insulation sleeve 211. The temperature in the tank 21 is kept constant, and the crystallization of the EC solvent is avoided, and in the embodiment, the temperature in the tank 21 is kept at 40-45 ℃.
Referring to fig. 3, in order to obtain the capacity of the tank 21 for temporarily storing the EC solvent, in this embodiment, a liquid level sensor 214 is further disposed at the top of the tank 21, the liquid level sensor 214 is configured to monitor the high and low liquid levels in the tank 21, a feeding valve 221 is disposed on the material suction pipe 22 between the deironing filter 13 and the storage container 12, the negative pressure unit 23 is connected to the top of the tank 21 through a vacuum interface, a vacuum valve 231 is disposed on the vacuum interface, and the liquid level sensor 214 is connected to the feeding valve 221 and the vacuum valve 231 through a PLC controller, respectively. Therefore, when the EC solvent is temporarily stored in the tank 21, the feeding valve 221 and the vacuum valve 231 are opened, the negative pressure unit 23 is started, the tank 21 is in a negative pressure state, the EC solvent in the storage container 12 is pressed into the tank 21 by atmospheric pressure, when the liquid level of the EC solvent reaches a high liquid level, the liquid level sensor 214 can acquire a liquid level signal and transmit a stop signal to the feeding valve 221 and the vacuum valve 231, the feeding valve 221 and the vacuum valve 231 are closed, feeding into the tank 21 is stopped, the tank 21 can store a certain volume of the EC solvent, and the EC solvent can be conveniently filled into the stirrer 31 for multiple times and stops feeding.
In order to accurately control the filling of the EC solvent into the blender 31, the top of the tank 21 of this embodiment is further provided with a first pressure sensor 215, a breather 216 and a nitrogen interface 217, the first pressure sensor 215 is used for monitoring the pressure in the tank 21, the breather 216 is used for keeping the pressure in the tank 21 balanced, the nitrogen interface 217 is used for connecting a nitrogen source to provide nitrogen for the tank 21, and a proportional control valve 321 connected with the feeding pipe 32 is arranged at a discharge port at the bottom of the tank 21.
By adopting the technical scheme, when the negative pressure unit 23 works, the breather 216 is in an open state, the pressure in the tank body 21 is kept balanced, meanwhile, the pressure in the tank body 21 can be monitored by the first pressure sensor 215, and the vacuumizing power of the negative pressure unit 23 is adjusted according to the pressure condition.
When the EC solvent in the tank 21 temporarily stores a certain volume, the feeding valve 221 and the vacuum valve 231 are closed, the breather 216 is closed, the nitrogen interface 217 is opened, nitrogen is introduced into the tank 21, the EC solvent in the tank 21 is conveyed into the stirrer 31 through the feeding pipeline 32 under the action of gravity and nitrogen micro-positive pressure, the weighing module 24 carries out weight reduction metering on the EC solvent conveyed into the stirrer 31, when the filling value is close to a target value, the opening degree of the proportion adjusting valve 321 is reduced, the filling flow of the EC solvent is reduced, when the target value is reached, the proportion adjusting valve 321 is completely closed, and the EC filling is finished, so that the filling precision can be improved.
As some preferred embodiments, a second pressure sensor 322 is further disposed on the feeding pipe 32 for monitoring the pressure in the feeding pipe 32 to prevent pipe explosion.
In some embodiments, the mixer 31 is further provided with a charging port (not shown) for charging other slurry. The filling operation of other slurry materials can be conveniently and synchronously completed.
The utility model discloses a theory of operation is:
the feeding valve 221 and the vacuum valve 231 are opened, the negative pressure unit 23 is started, the interior of the tank body 21 is in a negative pressure state, the EC solvent in the storage container 12 is pressed into the tank body 21 by atmospheric pressure, when the liquid level of the EC solvent reaches a high liquid level, the liquid level sensor 214 can acquire a liquid level signal and transmit a stop signal to the feeding valve 221 and the vacuum valve 231, the feeding valve 221 and the vacuum valve 231 are closed, feeding into the tank body 21 is stopped, and the tank body 21 can store a certain volume of the EC solvent. When the EC solvent in the tank 21 temporarily stores a certain volume, the feeding valve 221 and the vacuum valve 231 are closed, the breather 216 is closed, the nitrogen interface 217 is opened, nitrogen is introduced into the tank 21, the EC solvent in the tank 21 is conveyed into the stirrer 31 through the feeding pipeline 32 under the action of gravity and nitrogen micro-positive pressure, the weighing module 24 carries out weight reduction metering on the EC solvent conveyed into the stirrer 31, when the filling value is close to a target value, the opening degree of the proportion adjusting valve 321 is reduced, the filling flow of the EC solvent is reduced, when the target value is reached, the proportion adjusting valve 321 is completely closed, and the filling of the EC solution is finished, so that the filling precision can be improved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a lithium cell production is with automatic filling system of EC solvent which characterized in that includes:
the device comprises a material storage system (1), wherein the material storage system (1) comprises a constant temperature box (11) and a material storage container (12) arranged in the constant temperature box (11);
the metering system (2), the metering system (2) includes the pot body (21), sucks the material pipeline (22), negative pressure unit (23) and weighing module (24); one end of the material suction pipeline (22) is connected with a feeding hole of the tank body (21), the other end of the material suction pipeline is connected with the material storage container (12), the negative pressure unit (23) is connected with the tank body (21) and used for providing negative pressure for the tank body (21) so that a solvent in the material storage container (12) is pressed into the tank body (21) through the material suction pipeline (22), and the weighing module is used for weighing the weight of the solvent in the tank body (21);
mixing arrangement (3), including mixer (31) and feeding pipe (32), the one end of feeding pipe (32) is connected with jar body (21) bottom discharge gate, and the other end of feeding pipe (32) is connected with the pan feeding mouth of mixer (31).
2. The automatic EC solvent filling system for lithium battery production as claimed in claim 1, characterized in that: the temperature in the constant temperature box (11) is set to be 40-45 ℃.
3. The automatic EC solvent filling system for lithium battery production as claimed in claim 1, characterized in that: the storage system (1) further comprises an iron removal filter (13) arranged in the constant temperature box (11), and the iron removal filter (13) is arranged on the material suction pipeline (22).
4. The automatic EC solvent filling system for lithium battery production as claimed in claim 1, characterized in that: the outer walls of the material suction pipeline (22) and the material feeding pipeline (32) which are positioned outside the constant temperature box (11) are provided with electric tracing bands (S).
5. The automatic EC solvent filling system for lithium battery production as claimed in claim 1, characterized in that: the outer wall of the tank body (21) is provided with a heat insulation sleeve (211), the heat insulation sleeve (211) is provided with a water inlet (212) and a water outlet (213), and the water inlet (212) and the water outlet (213) are used for circularly leading hot water into the heat insulation sleeve (211).
6. The automatic EC solvent filling system for lithium battery production as claimed in claim 3, characterized in that: be provided with feed valve (221) on inhaling material pipeline (22) between deironing filter (13) and storage container (12), negative pressure unit (23) are connected with jar body (21) top through vacuum interface, are provided with vacuum valve (231) on the vacuum interface, jar body (21) top still is provided with level sensor (214), level sensor (214) are used for monitoring jar body (21) interior height liquid level, and level sensor (214) are connected with feed valve (221) and vacuum valve (231) respectively.
7. The automatic EC solvent filling system for lithium battery production as claimed in claim 6, characterized in that: the pressure monitoring device is characterized in that a first pressure sensor (215), a breather (216) and a nitrogen interface (217) are further arranged at the top of the tank body (21), the first pressure sensor (215) is used for monitoring the pressure in the tank body (21), the breather (216) is used for keeping the pressure balance in the tank body (21), the nitrogen interface (217) is used for being connected with a nitrogen source to provide nitrogen for the tank body (21), and a proportional control valve (321) connected with a feeding pipeline (32) is arranged at a discharge port at the bottom of the tank body (21).
8. The automatic EC solvent filling system for lithium battery production as claimed in claim 6, characterized in that: and a second pressure sensor (322) is also arranged on the feeding pipeline (32).
9. The automatic EC solvent filling system for lithium battery production as claimed in claim 1, characterized in that: the stirrer (31) is also provided with a feed inlet for filling other slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220906053.XU CN217093345U (en) | 2022-04-19 | 2022-04-19 | Automatic filling system of EC solvent for lithium battery production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220906053.XU CN217093345U (en) | 2022-04-19 | 2022-04-19 | Automatic filling system of EC solvent for lithium battery production |
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| Publication Number | Publication Date |
|---|---|
| CN217093345U true CN217093345U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220906053.XU Active CN217093345U (en) | 2022-04-19 | 2022-04-19 | Automatic filling system of EC solvent for lithium battery production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118403553A (en) * | 2024-06-27 | 2024-07-30 | 宁德时代新能源科技股份有限公司 | Material preparation device, control method thereof and battery production equipment |
| CN118594363A (en) * | 2024-08-02 | 2024-09-06 | 宁德时代新能源科技股份有限公司 | Control method for filling solvent into battery slurry production equipment, production equipment and electronic equipment |
-
2022
- 2022-04-19 CN CN202220906053.XU patent/CN217093345U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118403553A (en) * | 2024-06-27 | 2024-07-30 | 宁德时代新能源科技股份有限公司 | Material preparation device, control method thereof and battery production equipment |
| CN118594363A (en) * | 2024-08-02 | 2024-09-06 | 宁德时代新能源科技股份有限公司 | Control method for filling solvent into battery slurry production equipment, production equipment and electronic equipment |
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