CN220544206U - Lithium battery formation electrolyte reuse device - Google Patents
Lithium battery formation electrolyte reuse device Download PDFInfo
- Publication number
- CN220544206U CN220544206U CN202322018510.9U CN202322018510U CN220544206U CN 220544206 U CN220544206 U CN 220544206U CN 202322018510 U CN202322018510 U CN 202322018510U CN 220544206 U CN220544206 U CN 220544206U
- Authority
- CN
- China
- Prior art keywords
- cup
- pipeline
- lithium battery
- electrolyte
- battery formation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 54
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 29
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 45
- 241000521257 Hydrops Species 0.000 claims abstract description 32
- 206010030113 Oedema Diseases 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 13
- 238000004064 recycling Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 42
- 239000007789 gas Substances 0.000 abstract description 9
- 238000009825 accumulation Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 101150038956 cup-4 gene Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model discloses a lithium battery formation electrolyte recycling device, which can separate and temporarily store lost electrolyte and gas, and re-convey the extracted electrolyte into an electric core through nitrogen, and the specific scheme is as follows: the utility model provides a lithium cell formation electrolyte reuse device, includes the hydrops cup, the hydrops cup passes through negative pressure pipeline and is connected with the electric core, the hydrops cup top is provided with vacuum interface, and the hydrops cup passes through vacuum interface and is connected with vacuum generating device, vacuum generating device can inhale the electrolyte in the electric core into the hydrops cup, the hydrops cup still gets into the pipeline through nitrogen gas and is connected with nitrogen gas feeding device.
Description
Technical Field
The utility model relates to the technical field of lithium battery formation, in particular to a lithium battery formation electrolyte recycling device.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The new energy industry in the world rapidly develops today, and various devices are increasingly widely used. The negative pressure formation is also an important part in the middle, and the design of convenience utilization needs to consider the influence of various factors. Negative pressure formation of a lithium battery means that the internal pressure of the battery is lower than the atmospheric pressure during charging or discharging, i.e., a negative pressure state occurs. This phenomenon is mainly due to the generation and absorption of gas caused by chemical reaction inside the battery, and in the prior art, the gas inside the battery is generally discharged through a negative pressure suction nozzle, but the electrolyte is also discharged together at this time, which leads to waste of the electrolyte.
Specifically, the formation of the lithium battery is the first charging process of the battery after the liquid injection of the lithium battery. This process can activate the active material in the battery, activating the lithium battery. Meanwhile, the lithium salt and the electrolyte undergo side reaction, a solid electrolyte interface (SE I) film is generated on the negative electrode side of the lithium battery, and the film can prevent the side reaction from further happening, so that the loss of active lithium in the lithium battery is reduced. The quality of SE I has great influence on the cycle life, initial capacity loss, rate capability and the like of the lithium battery. In the discharging process, the cell is vacuumized from the liquid injection port to-80 KPa. The generated gas can be timely discharged by negative pressure formation, so that the stability and consistency of the SE I film are ensured. However, the formation equipment is complicated, the requirement on air tightness is high, and in addition, electrolyte loss can be generated in the vacuumizing process.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a lithium battery formation electrolyte recycling device which can separate and temporarily store consumed electrolyte and gas and re-convey the extracted electrolyte into an electric core through nitrogen.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
the utility model provides a lithium cell formation electrolyte reuse device, includes the hydrops cup, the hydrops cup passes through negative pressure pipeline and is connected with the electric core, the hydrops cup top is provided with vacuum interface, and the hydrops cup passes through vacuum interface and is connected with vacuum generating device, vacuum generating device can inhale the electrolyte in the electric core into the hydrops cup, the hydrops cup still gets into the pipeline through nitrogen gas and is connected with nitrogen gas feeding device.
Further, the negative pressure pipeline is connected with a busbar, the busbar is connected with a liquid storage cup, and the liquid storage cup is connected with an electric core.
Further, the liquid storage cup is connected with the battery cell through a negative pressure suction nozzle.
Further, a pneumatic valve for controlling nitrogen delivery is arranged on the nitrogen inlet pipeline.
Further, be connected with first pipeline between hydrops cup and the busbar, be provided with first ball valve on the first pipeline.
Further, the liquid storage cup is connected with the battery cell through a second pipeline, and the negative pressure suction nozzle is arranged at the tail end of the second pipeline.
Further, the liquid storage device also comprises a third pipeline, one end of the third pipeline is connected to the liquid storage cup, and the other end of the third pipeline is connected to the second pipeline.
Further, a second ball valve is arranged on the third pipeline.
Further, the vacuum generating device comprises a vacuum generator.
Further, the nitrogen supply device comprises a nitrogen generator.
The beneficial effects of the utility model are as follows:
1) According to the utility model, the liquid accumulation cup is arranged on the negative pressure pipeline connected with the battery core, and the vacuum interface connected with the vacuum generating device is arranged at the top of the liquid accumulation cup, so that when gas and electrolyte in the battery core enter the liquid accumulation cup, heavier electrolyte enters the liquid accumulation cup, gas-liquid separation is completed, electrolyte is temporarily stored in the liquid accumulation cup, and the pumped electrolyte is re-conveyed into the battery core through nitrogen after negative pressure formation is finished, so that electrolyte loss is reduced.
2) The utility model also provides a busbar and a liquid storage cup between the liquid storage cup and the battery core, carries out multistage filtration and collection on electrolyte, and retains more electrolyte in the busbar, the liquid storage cup and the liquid storage cup, thereby further reducing electrolyte loss.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
Fig. 1 is a schematic view of a lithium battery formation electrolyte recycling apparatus according to one or more embodiments of the present utility model.
In the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustration is only schematic.
Wherein: 1. nitrogen enters the pipeline 2, the pneumatic valve 3, the liquid accumulation cup 4, the first ball valve 5, the busbar 6, the liquid storage cup 7, the second ball valve 8, the electric core 9, the negative pressure suction nozzle 10, the negative pressure pipeline 11 and the vacuum interface.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
Example 1
The utility model provides a lithium cell formation electrolyte reuse device, as shown in fig. 1, including hydrops cup 3, hydrops cup 3 is connected with electric core 8 through negative pressure pipeline 10, and the cross-sectional area of hydrops cup 3 is greater than the cross-sectional area of negative pressure pipeline, and the hydrops cup top is provided with vacuum interface 11, and the hydrops cup passes through vacuum interface and is connected with vacuum generating device, and vacuum generating device can be with the electrolyte suction in the electric core to the hydrops cup in, and the hydrops cup still is connected with nitrogen gas feeding device through nitrogen gas admission pipeline 1, is provided with the pneumatic valve 2 that is used for controlling nitrogen gas transportation on the nitrogen gas admission pipeline.
Through set up the hydrops cup on the negative pressure pipeline that is connected with the electric core to set up the vacuum interface that is connected with vacuum generating device in the hydrops cup top, make when gas and electrolyte in the electric core enter into the hydrops cup, heavier electrolyte enters into the hydrops cup, in the electrolyte is temporarily stored in the hydrops cup when accomplishing gas-liquid separation, and in the negative pressure formation is finished after with the electrolyte of taking out again in the electric core through nitrogen gas, thereby reduce electrolyte loss.
Further, as shown in fig. 1, the effusion cup may also be connected with the busbar 5 through a negative pressure pipe, that is, the top end of the negative pressure channel is connected to the bottom of the effusion cup, the bottom end of the negative pressure channel is connected to the busbar, the busbar is connected with the liquid storage cup 6 through a pipe, and the liquid storage cup is also connected with the electric core through a pipe.
Specifically, the busbar includes into vacuum mouth, branch mouth and broken vacuum mouth, and into vacuum mouth and negative pressure channel connection, broken vacuum mouth is connected with the hydrops cup through first pipeline, and the branch mouth can be connected with a plurality of electric cores, and then converges to a plurality of electric cores.
The effusion cup, the busbar and the liquid storage cup are all hollow box structures, and the cross sectional areas of the effusion cup, the busbar and the liquid storage cup are all larger than the cross sectional area of the negative pressure pipeline.
The busbar and the liquid storage cup are arranged between the liquid storage cup and the battery cell, electrolyte is subjected to multistage filtration and collection, more electrolyte is reserved in the busbar, the liquid storage cup and the liquid storage cup, and electrolyte loss is further reduced.
In order to further improve the retention of the filtered electrolyte, a compact filter screen can be arranged at the vacuum interface to retain the electrolyte.
In order to increase the tightness during negative pressure formation, the liquid storage cup can be connected with the electric core through a negative pressure suction nozzle 9, and particularly, the liquid storage cup is connected with the electric core through a second pipeline, and the negative pressure suction nozzle is arranged at the tail end of the second pipeline.
A first ball valve 4 is arranged on a first pipeline connected between the effusion cup and the busbar.
Still include the third pipeline, third pipeline one end is connected on the stock solution cup, the other end of third pipeline is connected on the second pipeline, is provided with second ball valve 7 on the third pipeline.
Electrolyte in the liquid accumulation cup can flow back to the busbar through the first pipeline and then flow back to the pipeline of the battery cell, and electrolyte in the liquid accumulation cup can flow back to the pipeline of the battery cell through the third pipeline.
The vacuum generating device is a device capable of generating negative pressure, and specifically can be a device capable of providing nitrogen by using a vacuum generator, and the nitrogen supplying device can be a nitrogen generator or a nitrogen inlet pipeline can be directly connected with a nitrogen pipeline in a factory.
When the vacuum suction device is used, the pneumatic valve is closed, the vacuum generating device is opened to vacuumize, electrolyte is pumped out along with gas in the vacuumizing process, the back of the negative pressure suction nozzle is connected with the liquid storage cup, then the back of the liquid storage cup is connected to the busbar, the liquid accumulation cup is added at the back of the busbar, the electrolyte in the liquid accumulation cup is filtered again, and then the gas is discharged. When the formation step is finished, the vacuum generating device is closed, the pneumatic valve and the two ball valves are connected, and the pumped electrolyte is pumped back again by introducing nitrogen.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a lithium cell formation electrolyte reuse device, its characterized in that includes the hydrops cup, the hydrops cup passes through negative pressure pipeline and is connected with the electric core, the hydrops cup top is provided with the vacuum interface, and the hydrops cup passes through the vacuum interface and is connected with vacuum generating device, vacuum generating device can inhale the electrolyte in the electric core into the hydrops cup, the hydrops cup still is connected with nitrogen gas feeding device through nitrogen gas admission pipeline.
2. The lithium battery formation electrolyte recycling device according to claim 1, wherein the negative pressure pipeline is connected with a busbar, the busbar is connected with a liquid storage cup, and the liquid storage cup is connected with an electric core.
3. The lithium battery formation electrolyte recycling device according to claim 2, wherein the liquid storage cup is connected with the electric core through a negative pressure suction nozzle.
4. The lithium battery formation electrolyte recycling device according to claim 1, wherein a pneumatic valve for controlling nitrogen delivery is arranged on the nitrogen inlet pipeline.
5. The lithium battery formation electrolyte recycling device according to claim 2, wherein a first pipeline is connected between the effusion cup and the busbar, and a first ball valve is arranged on the first pipeline.
6. The lithium battery formation electrolyte recycling device according to claim 3, wherein the liquid storage cup is connected with the electric core through a second pipeline, and the negative pressure suction nozzle is arranged at the tail end of the second pipeline.
7. The lithium battery formation electrolyte recycling device according to claim 6, further comprising a third pipe, wherein one end of the third pipe is connected to the liquid storage cup, and the other end of the third pipe is connected to the second pipe.
8. The lithium battery formation electrolyte recycling device according to claim 7, wherein the third pipe is provided with a second ball valve.
9. The lithium battery formation electrolyte recycling device according to claim 1, wherein the vacuum generating device comprises a vacuum generator.
10. The lithium battery formation electrolyte recycling device according to claim 1, wherein the nitrogen gas supply device comprises a nitrogen gas generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322018510.9U CN220544206U (en) | 2023-07-28 | 2023-07-28 | Lithium battery formation electrolyte reuse device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322018510.9U CN220544206U (en) | 2023-07-28 | 2023-07-28 | Lithium battery formation electrolyte reuse device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220544206U true CN220544206U (en) | 2024-02-27 |
Family
ID=89960691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322018510.9U Active CN220544206U (en) | 2023-07-28 | 2023-07-28 | Lithium battery formation electrolyte reuse device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220544206U (en) |
-
2023
- 2023-07-28 CN CN202322018510.9U patent/CN220544206U/en active Active
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