CN219959093U - Device for accelerating pre-lithium - Google Patents
Device for accelerating pre-lithium Download PDFInfo
- Publication number
- CN219959093U CN219959093U CN202320160508.2U CN202320160508U CN219959093U CN 219959093 U CN219959093 U CN 219959093U CN 202320160508 U CN202320160508 U CN 202320160508U CN 219959093 U CN219959093 U CN 219959093U
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- CN
- China
- Prior art keywords
- lithium
- fixing plate
- battery cell
- accelerating
- fixing
- 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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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 69
- 238000006138 lithiation reaction Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000002791 soaking Methods 0.000 abstract description 3
- 230000001502 supplementing effect Effects 0.000 abstract description 3
- 239000007784 solid electrolyte Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000002161 passivation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 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
- 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
Abstract
The utility model discloses a device for accelerating pre-lithium, which comprises: the rotating piece is used for fixing the pre-lithium battery cell and driving the pre-lithium battery cell to rotate; the driving piece is used for driving the rotating piece to rotate; and the conductive piece is electrically connected with the pre-lithium battery cell. Therefore, the pre-lithiation can be accelerated in a rotating mode, the pre-lithiation effect is improved, the lithium on the lithium strip of the pre-lithiation battery cell in the soaking process can achieve a better consumption effect, more active lithium still exists after the process of forming the SEI film in the formation stage, and the lithium ion supplementing rate is improved.
Description
Technical Field
The utility model relates to the technical field of battery prelithiation, in particular to a device for accelerating prelithiation.
Background
Because the lithium ion battery has the advantages of high energy density, good safety, long cycle life, low cost and the like, the lithium ion battery is widely applied to the fields of electronics, medical treatment, transportation, aerospace and the like, and is widely used for expanding boxing in the application field of new energy automobiles. However, in the full-cell formation and capacity division process, the electrolyte reacts at the negative electrode to generate an SEI film and consume lithium ions from the positive electrode, a stable SEI film (full-called solid electrolyte interface) is formed on the surface of the negative electrode, namely a passivation film layer with solid electrolyte property, and in the subsequent use, the active lithium is continuously consumed due to continuous damage and repair of the SEI film (full-called solid electrolyte interface) and the passivation film layer with solid electrolyte property, so that the initial efficiency is lower. In order to compensate the loss of part of active lithium and improve the initial efficiency of the battery, a battery is generally supplied with a lithium source in a pre-lithiation mode, and the pre-lithiation common modes include electrochemical pre-lithiation, chemical pre-lithiation and the like, but the pre-lithiation effect is slow and the lithium ion supply rate is incomplete.
Disclosure of Invention
In order to solve the technical problems in the background technology, the utility model provides a device for accelerating pre-lithium.
The utility model provides a device for accelerating pre-lithium, which comprises:
the rotating piece is used for fixing the pre-lithium battery cell and driving the pre-lithium battery cell to rotate;
the driving piece is used for driving the rotating piece to rotate;
and the conductive piece is electrically connected with the pre-lithium battery cell.
Preferably, the device further comprises a base and two brackets, wherein the two brackets are fixed at the top of the base at opposite intervals, and the rotating piece is rotationally connected with the top end of the bracket.
Preferably, the rotating member is provided as a rotating drum, and at least four fixing parts for fixing the pre-lithium battery cell are circumferentially arranged on the rotating drum along the outer surface of the rotating drum.
Preferably, the fixing part comprises two fixing rods and a fixing plate assembly, the fixing plate assembly comprises a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are arranged at intervals in parallel and detachably connected with each other, the pre-lithium battery cell is fixed between the first fixing plate and the second fixing plate, and one ends of the two fixing rods are fixed on the outer wall of the rotary drum, and the other ends of the two fixing rods are fixed with the first fixing plate.
Preferably, the first fixing plate and the second fixing plate are detachably connected through screw holes and bolts.
Preferably, the first fixing plate and the second fixing plate are provided as epoxy resin plates.
Preferably, the conductive member is a conductive shaft, the conductive shaft is disposed in the rotary drum, the axis of the conductive shaft is parallel to the axis of the rotary drum, and the first end of the conductive shaft is connected with the positive electrode and the negative electrode of the pre-lithium battery cell through a plurality of wires respectively.
Preferably, the device further comprises a multichannel recorder connected to the second end of the conductive shaft through a plurality of wires.
Preferably, the outer wall of the conductive shaft is provided with a plurality of protrusions, the protrusions surround the conductive shaft in the circumferential direction, and the plurality of protrusions are arranged in the axial direction of the conductive shaft.
Preferably, the bump is made of copper, and the conductive shaft is made of aluminum.
According to the device for accelerating the pre-lithium, the rotating piece drives the pre-lithium battery core to rotate and is electrically connected with the conductive piece, so that the pre-lithium can be accelerated in a rotating mode, the pre-lithium effect is improved, the lithium on the lithium belt of the pre-lithium battery core in the soaking process can achieve a better consumption effect, more active lithium still exists after the SEI film is formed in the formation stage, and the lithium ion supplementing rate is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is an overall block diagram of a speed-up pre-lithium apparatus in an embodiment of the present utility model;
FIG. 2 is a front view of a accelerated pre-lithium device in accordance with an embodiment of the present utility model;
FIG. 3 is a side view of an accelerated pre-lithium device in accordance with an embodiment of the present utility model;
FIG. 4 is a side cross-sectional view of an accelerated pre-lithium device in accordance with an embodiment of the utility model;
FIG. 5 is a front cross-sectional view of an accelerated pre-lithium device in accordance with an embodiment of the present utility model;
FIG. 6 is a top view of a accelerated pre-lithium device in accordance with an embodiment of the present utility model;
fig. 7 is a top cross-sectional view of an accelerated prelithiation apparatus in accordance with an embodiment of the present utility model.
In the figure:
1-a base; 2-a bracket; 3-a drum; 4-a fixed rod; 5-a first fixing plate; 6-a second fixing plate; 7-a conductive shaft; 8-a motor; 9-conducting wires; 10-bump.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the utility model described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the utility model described in the claims.
Referring to fig. 1-7, the present embodiment provides an apparatus for accelerating pre-lithium, comprising:
the rotating piece is used for fixing the pre-lithium battery cell and driving the pre-lithium battery cell to rotate; specifically, the pre-lithium battery cell in this embodiment is prepared by pre-lithiating the battery cell negative electrode by welding a lithium tape (foil), that is, cutting the lithium tape, welding the lithium tape to the negative electrode, and winding a separator.
The driving piece is used for driving the rotating piece to rotate; specifically, the driving piece is a motor 8, and the output end of the motor 8 is connected with the rotating piece to drive the rotating piece to rotate.
And the conductive piece is electrically connected with the pre-lithium battery cell.
Therefore, the pre-lithiation can be accelerated in a rotating mode, the pre-lithiation effect is improved, the lithium on the lithium strip of the pre-lithiation battery cell in the soaking process can achieve a better consumption effect, more active lithium still exists after the process of forming the SEI film in the formation stage, and the lithium ion supplementing rate is improved.
Further, as shown in fig. 1, the device further comprises a base 1 and two brackets 2, wherein the two brackets 2 are fixed at the top of the base 1 at intervals, the rotating member is rotationally connected with the top of the brackets 2, specifically, the brackets 2 are integrally triangular frames, the stability is good, and the tops of the triangular frames are arc-shaped and can be rotationally connected with the rotating member.
Further, the rotating member is a rotary drum 3, and at least four fixing parts for fixing the pre-lithium battery cell are circumferentially arranged on the rotary drum 3 along the outer surface of the rotary drum.
Specifically, the fixing part comprises two fixing rods 4 and a fixing plate assembly, the fixing plate assembly comprises a first fixing plate 5 and a second fixing plate 6, the first fixing plate 5 and the second fixing plate 6 are arranged in parallel at intervals and detachably connected with each other, the pre-lithium battery cell is fixed between the first fixing plate 5 and the second fixing plate 6, one ends of the two fixing rods 4 are fixed on the outer wall of the rotary drum 3, and the other ends of the two fixing rods are fixed with the first fixing plate 5
The first fixing plate 5 and the second fixing plate 6 can be detachably connected through threaded holes and bolts, namely threaded holes are formed in four corners of the first fixing plate 5 and four corners of the second fixing plate 6, and then the fixing of the pre-lithium battery cell is completed in the threaded holes through bolt fixing. Of course, it may be detachably connected by other means, as the case may be.
In this embodiment, the first fixing plate 5 and the second fixing plate 6 are made of epoxy resin plates (also called insulating plates, epoxy plates, 3240 epoxy plates, which are formed by laminating epoxy resin and glass fiber cloth, and because the molecular structure contains active epoxy groups, they can undergo a crosslinking reaction with various curing agents to form insoluble and infusible high polymers with three-dimensional network structures), and the adhesive force is strong and the shrinkage is low.
Preferably, the conductive member is a conductive shaft 7, the conductive shaft 7 is placed in the rotary drum 3, the axis of the conductive shaft 7 is parallel to the axis of the rotary drum 3, the first end of the conductive shaft 7 is respectively connected with the positive electrode and the negative electrode of the pre-lithium battery cell through a plurality of wires 9, specifically, the conductive shaft 7 is fixed, and 8 wires 9 are pulled out to connect the positive electrode and the negative electrode of the pre-lithium battery cell. Meanwhile, the temperature-sensing device further comprises a multichannel recorder, the multichannel recorder is connected to the second end of the conductive shaft 7 through a plurality of wires, so that the voltage state can be monitored in real time, if the temperature is required to be measured, 8 temperature-sensing wires can be pulled out of the conductive shaft 7 to be connected with the multichannel recorder, and the temperature-sensing device can be monitored in real time and is convenient to control.
Further, the outer wall of the conductive shaft 7 is provided with a plurality of projections 10, the projections 10 are circumferentially surrounded along the conductive shaft 7, and the plurality of projections 10 are arranged along the axial direction of the conductive shaft 7. Specifically, the bump 10 is made of copper, and the conductive shaft 7 is made of aluminum (non-conductive metal).
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (10)
1. An apparatus for accelerating pre-lithium comprising:
the rotating piece is used for fixing a pre-lithium battery cell and driving the pre-lithium battery cell to rotate, and the pre-lithium battery cell is welded on a battery cell negative electrode through a lithium belt or a lithium foil to perform pre-lithiation;
the driving piece is used for driving the rotating piece to rotate;
and the conductive piece is electrically connected with the pre-lithium battery cell.
2. The device for accelerating the pre-lithium process according to claim 1, further comprising a base and two brackets, wherein the two brackets are fixed at the top of the base at a relative interval, and the rotating member is rotatably connected with the top ends of the brackets.
3. The device for accelerating the pre-lithium process according to claim 2, wherein the rotating member is provided as a drum, and at least four fixing portions for fixing the pre-lithium battery cell are provided on the drum along the circumferential direction of the outer surface thereof.
4. The device for accelerating the pre-lithium battery according to claim 3, wherein the fixing part comprises two fixing rods and a fixing plate assembly, the fixing plate assembly comprises a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are arranged in parallel at intervals and are detachably connected, the pre-lithium battery cell is fixed between the first fixing plate and the second fixing plate, one end of each of the two fixing rods is fixed on the outer wall of the rotary cylinder, and the other end of each of the two fixing rods is fixed with the first fixing plate.
5. The apparatus for accelerating the pre-lithium process according to claim 4, wherein the first fixing plate and the second fixing plate are detachably coupled by screw holes and bolts.
6. The apparatus for accelerating pre-lithium according to claim 5, wherein the first fixing plate and the second fixing plate are provided as epoxy plates.
7. A device for accelerating the pre-lithium process according to claim 3, wherein the conductive member is a conductive shaft, the conductive shaft is disposed in the rotary drum, the axis of the conductive shaft is parallel to the axis of the rotary drum, and the first end of the conductive shaft is connected to the positive electrode and the negative electrode of the pre-lithium battery cell through a plurality of wires, respectively.
8. The apparatus for accelerating the pre-lithium process of claim 7, further comprising a multichannel recorder connected to the second end of the conductive shaft by a plurality of wires.
9. The apparatus for accelerating the pre-lithium of claim 7, wherein the outer wall of the conductive shaft is provided with a plurality of protrusions, the protrusions are circumferentially surrounded along the conductive shaft, and the plurality of protrusions are arranged along the axial direction of the conductive shaft.
10. The device for accelerating the pre-lithium process of claim 9, wherein the bump is copper and the conductive shaft is aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320160508.2U CN219959093U (en) | 2023-02-09 | 2023-02-09 | Device for accelerating pre-lithium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320160508.2U CN219959093U (en) | 2023-02-09 | 2023-02-09 | Device for accelerating pre-lithium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219959093U true CN219959093U (en) | 2023-11-03 |
Family
ID=88550850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320160508.2U Active CN219959093U (en) | 2023-02-09 | 2023-02-09 | Device for accelerating pre-lithium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219959093U (en) |
-
2023
- 2023-02-09 CN CN202320160508.2U patent/CN219959093U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |