CN218113097U - Powder lithium salt sampling device for lithium ion battery - Google Patents
Powder lithium salt sampling device for lithium ion battery Download PDFInfo
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- CN218113097U CN218113097U CN202221547024.5U CN202221547024U CN218113097U CN 218113097 U CN218113097 U CN 218113097U CN 202221547024 U CN202221547024 U CN 202221547024U CN 218113097 U CN218113097 U CN 218113097U
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- lithium salt
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- ion battery
- lithium
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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 provides a powder lithium salt sampling device for lithium ion battery, it includes: the tank container is provided with at least one opening for loading and/or unloading the powder, and the upper part of the tank container is provided with a first gas pipeline interface; a valve, the outlet end of which is hermetically connected with the opening of the tank container; and one end of the connecting pipe is connected with the inlet end of the valve in a sealing manner, the other end of the connecting pipe is provided with a connecting port for connecting a loading pipeline in a sealing manner, and a second gas pipeline interface is arranged between the two ends of the connecting pipe. Use according to utility model powder lithium salt sampling device's in-process, the lithium salt contactless air does not influence the interior lithium salt quality of former pail pack.
Description
Technical Field
The utility model relates to an electrolyte production technical field particularly, relates to a powder lithium salt sampling device that is used for lithium ion battery, especially is used for lithium ion battery's electrolyte.
Background
Lithium salts needed by the lithium ion battery electrolyte at present are various, such as lithium hexafluorophosphate, lithium difluorophosphate and the like, and the lithium salts are powder materials and are strictly prohibited to be in contact with air. With the rapid development of new energy vehicles, the amount of lithium salt used as a main raw material of a lithium secondary battery is also increasing.
The current commercial lithium salt for industrial use has a large packaging specification, and is usually packaged in a stainless steel barrel seal package and protected by nitrogen, for example, the lithium hexafluorophosphate which is the most used lithium salt at present is also packaged in a stainless steel barrel seal package, and the common packaging mode is a stainless steel barrel (150 kg) or a stainless steel ton barrel (1000 kg). However, most lithium salts undergo a drastic decomposition reaction with moisture in the air when exposed to the air, thereby emitting corrosive white fumes.
The current practice in the industry to sample lithium salts from large format packages is: and directly opening a sealing valve of the stainless steel barrel to carry out open sampling. Although the barrel is protected by nitrogen, the method cannot effectively isolate the lithium salt from air, and certain potential safety hazards still exist. This open handling can expose the lithium salt to air, affect the sampling test results, and can affect the quality of the lithium salt being removed, even in large format packages.
Therefore, there is a need for a device that can sample in the absence of air.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems existing in the prior art, the utility model discloses a powder lithium salt sampling device. The device can be under the condition of whole isolated air, roll out the lithium salt in the stainless steel bucket, and whole device is put into the glove box after rolling out, takes out the lithium salt again and carries out operations such as supplied materials inspection or partial shipment. In the whole process, the lithium salt does not contact with the air, and the quality of the lithium salt in the original packaging barrel is not influenced.
According to the utility model discloses, a powder lithium salt sampling device is provided, it includes:
the tank container is provided with at least one opening for loading and/or unloading the powder, and the upper part of the tank container is provided with a first gas pipeline interface;
a valve, wherein the outlet end of the valve is hermetically connected with the opening of the tank container; and
and a connection pipe having one end hermetically connected to the inlet end of the valve and the other end hermetically connected to a pipe for loading, and provided with a second gas pipe connection at a middle portion thereof.
In a preferred embodiment of the present invention, a transparent window is provided on the tank container for observing the load in the tank container.
In a preferred embodiment according to the present invention, the tank container is in a cylindrical shape, a rectangular parallelepiped shape, a conical shape, or a combination thereof.
In a preferred embodiment according to the invention, the tank container is made of stainless steel, preferably 316 stainless steel.
In a preferred embodiment according to the invention, the connecting tube is made of stainless steel, preferably 316 stainless steel.
In a preferred embodiment according to the invention, the sealing connection is a flange-tight connection.
In a preferred embodiment according to the invention, the valve is a ball valve or a butterfly valve.
In a preferred embodiment according to the present invention, a discharge opening is provided at a lower portion of the tank container, and the discharge opening is provided with a valve.
In a preferred embodiment according to the present invention, the powdered lithium salt is lithium hexafluorophosphate or lithium difluorophosphate.
In a preferred embodiment according to the invention, the conduit for loading is a metal hose.
Before taking a sample, fully wash and dry according to the utility model discloses a powder lithium salt sampling device. Then the gas pipeline interface on the tank container and the connecting pipe on the connecting pipe are vacuumized, and then nitrogen is charged, so that the inside of the powder lithium salt sampling device is ensured to be in a nitrogen atmosphere. Thereby ensuring the isolation from the air in the sampling process and preventing the lithium salt from reacting and deteriorating.
Drawings
Fig. 1 is a schematic view of a powder lithium salt sampling device according to an embodiment of the present invention.
Reference numerals:
1: a connection port (flange);
2: a second gas conduit interface;
3: a valve;
4: a first gas conduit interface;
5: a transparent window;
6: a tank container.
Detailed Description
A powdered lithium salt sampling device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments of the present invention are merely illustrative of the present invention, and not restrictive of the scope of the present invention.
As shown in fig. 1, the powdery lithium salt sampling device includes: the container body 6 is provided with an opening for loading the lithium powder and unloading the lithium powder, the upper part of the container body 6 is provided with a first gas pipeline interface 4, and the lower part of the container body 6 is provided with a transparent window 5 for observing the loading or unloading condition of the lithium powder in the container body 6; the outlet end of the valve 3 is tightly and hermetically connected with the opening of the tank container 6 through a flange; and a connection pipe having one end connected with the inlet end of the valve 3 through a flange fastening and sealing, and the other end provided with a flange 1 as a connection port, the flange being connected with a pipe for loading through a flange fastening and sealing, and a second gas pipe connection port 2 provided at the middle portion of both ends of the connection pipe. Wherein the tank container 6 and the connection pipe are made of 316 stainless steel. As shown in fig. 1, the tank container 6 includes an upper portion having a conical shape and a lower portion having a cylindrical shape. The opening for loading the lithium powder and unloading the powder is arranged at the top of the conical shape.
The valve 3 is respectively connected with the tank container 6 and the connecting pipe in a fastening and sealing way through flanges. The valve 3 is a ball valve. The other end of the connecting pipe is provided with a flange 1, and is connected with a metal hose (not shown) through the flange 1, and the other end of the metal hose is connected with a packaging barrel (not shown) of lithium powder.
And fully cleaning and drying the powder lithium salt sampling device before sampling operation. The tank container 6 is evacuated through the first gas line connection 4 and is circulated with nitrogen three times. During the use, be connected flange 1 and metal collapsible tube with the stainless steel lithium salt storage vat discharge gate of inversion to use dry high-purity nitrogen gas to replace through second gas pipeline interface 2, guarantee dry and for nitrogen atmosphere in the connecting tube. Then, the valve at the discharge port of the stainless steel lithium salt storage tank is opened, and the valve 3 is opened again, and the amount of the lithium salt added is observed through the transparent window 5, or the sampling device is placed on an electronic scale (not shown) to measure the weight of the lithium salt added through the change in weight.
After the material is transferred, close valve 3, close stainless steel lithium salt storage vat discharge gate valve again, pressurize in 6 jar body container through first gas pipeline interface 4, keep the internal malleation of 6 jar body containers. And then putting the powder lithium salt sampling device into a glove box for other operations.
By using the method for sampling the lithium salt, the lithium salt can be prevented from reacting due to the contact with the air, the quality and the detection result are influenced, and the safety risk caused by the leakage of the lithium salt is also avoided.
Claims (10)
1. A powder lithium salt sampling device for lithium ion battery, characterized in that, a powder lithium salt sampling device for lithium ion battery includes:
the tank container is provided with at least one opening for loading and/or unloading the powder, and the upper part of the tank container is provided with a first gas pipeline interface;
a valve, the outlet end of which is hermetically connected with the opening of the tank container; and
and one end of the connecting pipe is connected with the inlet end of the valve in a sealing manner, the other end of the connecting pipe is provided with a connecting port for connecting a loading pipeline in a sealing manner, and a second gas pipeline interface is arranged between the two ends of the connecting pipe.
2. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
and a transparent window is arranged on the tank container and used for observing the loading capacity in the tank container.
3. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
the tank container is in a cylindrical shape, a rectangular parallelepiped shape, a conical shape or a combination thereof.
4. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
the tank container is made of stainless steel, and the connection pipe is made of stainless steel.
5. The powder lithium salt sampling device for a lithium ion battery according to claim 4,
the tank container is made of 316 stainless steel, and the connection pipe is made of 316 stainless steel.
6. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
the pipeline for loading is a metal hose.
7. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
the sealing connection is through flange fastening connection.
8. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
the valve is a ball valve or a butterfly valve.
9. The powder lithium salt sampling device for a lithium ion battery according to claim 1,
the lower part of the tank body container is provided with a discharge hole, and the discharge hole is provided with a valve.
10. The lithium salt sampling device for a lithium ion battery as claimed in any one of claims 1 to 9,
the lithium salt of the powder is lithium hexafluorophosphate or lithium difluorophosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221547024.5U CN218113097U (en) | 2022-06-21 | 2022-06-21 | Powder lithium salt sampling device for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221547024.5U CN218113097U (en) | 2022-06-21 | 2022-06-21 | Powder lithium salt sampling device for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218113097U true CN218113097U (en) | 2022-12-23 |
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ID=84515464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221547024.5U Active CN218113097U (en) | 2022-06-21 | 2022-06-21 | Powder lithium salt sampling device for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218113097U (en) |
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2022
- 2022-06-21 CN CN202221547024.5U patent/CN218113097U/en active Active
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