CN210040396U - Device for lithium supplement of pole piece - Google Patents
Device for lithium supplement of pole piece Download PDFInfo
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- CN210040396U CN210040396U CN201921049916.0U CN201921049916U CN210040396U CN 210040396 U CN210040396 U CN 210040396U CN 201921049916 U CN201921049916 U CN 201921049916U CN 210040396 U CN210040396 U CN 210040396U
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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 device for pole piece lithium supplement, the pole piece comprises a current collector and an active substance layer which is discontinuously arranged on the surface of the current collector, the device for pole piece lithium supplement comprises a rolling mechanism, a pole piece providing mechanism, a lithium film providing mechanism and a strip providing mechanism; the rolling mechanism comprises two pressing rollers; the pole piece providing mechanism is used for providing pole pieces; a lithium film providing mechanism for providing a lithium film including a transfer film and a lithium foil continuously adhered to the transfer film; the strip providing mechanism is used for providing a strip, the strip comprises a substrate and an adhesion layer, and the adhesion layer can correspond to the active material layer of the pole piece; the rolling mechanism is used for rolling the strip material, the lithium film and the pole piece so as to enable the lithium foil in the lithium film to be adhered to the active material layer. The utility model discloses an increase the strip and provide the mechanism, can reduce the pole piece and mend the pressure that lithium in-process combined lithium membrane to it is impaired to reduce the transfer membrane of the benefit lithium pole piece and lithium membrane after the benefit lithium.
Description
Technical Field
The utility model relates to an electrochemistry field, more specifically relates to a device that is used for lithium is mended to pole piece.
Background
In recent years, with the rapid development of electric vehicles, the energy density requirement of a power battery is more and more strict, and for a negative plate, part of lithium is consumed due to the formation of a Solid Electrolyte Interface (SEI) film in the first charging process of the battery, so that the loss of lithium serving as a positive electrode material is caused, the capacity of the battery is reduced, and the first efficiency is reduced. This is particularly evident in negative electrode sheets using alloy materials (e.g., silicon alloys, tin alloys, etc.) as active materials. In order to reduce the decrease in battery capacity due to the irreversible capacity of the battery during the first charge and discharge, some solutions have been adopted.
One of the solutions employs a device for pole piece lithium supplement, in which a lithium film providing mechanism is used for providing a lithium film, the lithium film includes a transfer film and a lithium foil, the lithium foil is continuously adhered to the transfer film and faces an active material layer of the pole piece, and the pole piece includes a current collector and an active material layer discontinuously disposed on the surface of the current collector. The rolling mechanism is used for rolling the lithium film and the pole piece, and the lithium foil in the lithium film is discontinuously adhered to the active material layer. However, in the device for lithium supplement of the pole piece, the lithium film is very thin, and the gap between the press rollers of the pressing mechanism is also small when the pole piece is rolled, so that the pole piece is easy to deform under stress during the rolling process of the lithium film.
SUMMERY OF THE UTILITY MODEL
In view of the problem that exists among the prior art, the utility model aims to provide a device for lithium is mended to pole piece, it can reduce the pole piece and mend the pressure that lithium in-process covers the lithium membrane to it is impaired to reduce the transfer membrane of mending lithium pole piece and lithium membrane after the lithium.
In order to achieve the above object, the utility model provides a device for lithium is mended to pole piece, the pole piece includes the current collector and sets up the active material layer on the current collector surface discontinuously, the device for lithium is mended to the pole piece includes rolling mechanism, pole piece provides the mechanism, lithium membrane provides the mechanism; the rolling mechanism comprises two pressing rollers; the pole piece providing mechanism is positioned at the upstream of the two compression rollers and is used for providing pole pieces between the two compression rollers; a lithium film providing mechanism is positioned at the upstream of the two compression rollers and is used for providing a lithium film, and the lithium film comprises a transfer film and a lithium foil; the device for supplementing lithium to the pole piece also comprises a strip material providing mechanism; the belt material providing mechanism is used for providing a belt material between the transfer film of the lithium film and the press roller on the corresponding side of the transfer film, the belt material comprises a base material and an adhesion layer which is discontinuously arranged on the base material, and the adhesion layer can correspond to the active material layer of the pole piece; the rolling mechanism is used for rolling the strip material, the lithium film and the pole piece so as to enable the lithium foil in the lithium film to be adhered to the active material layer.
In one embodiment, the device for pole piece lithium supplement further comprises a transfer film collecting mechanism, the transfer film collecting mechanism is located at the downstream of the two compression rollers, and the transfer film collecting mechanism is used for collecting the transfer film passing through the two compression rollers.
In one embodiment, the lithium film supplying means includes a rolling means for adhering the lithium foil to the transfer film.
In an embodiment, the lithium film supply mechanism further includes an auxiliary film supply mechanism located upstream of the rolling mechanism, the auxiliary film supply mechanism being for supplying the auxiliary film to the rolling mechanism.
In one embodiment, the lithium film supplying mechanism further includes an auxiliary film take-up mechanism located downstream of the rolling mechanism for taking up the auxiliary film passed through the rolling mechanism.
In one embodiment, the rolling mechanism includes a transfer film supply mechanism for supplying the transfer film between two rollers, a lithium tape supply mechanism for supplying the lithium tape between two rollers, and two rollers for rolling the lithium tape and the transfer film to roll the lithium tape into a lithium foil and continuously adhere the lithium foil to the transfer film to form the lithium film.
In one embodiment, the tape supply mechanism includes tape pay-out mechanisms for paying out the tape to the two press rollers and a tape take-up mechanism for taking up the tape passed through the two press rollers, which are disposed upstream and downstream of the two press rollers, respectively.
In one embodiment, the substrate and/or the attachment layer are elastic.
In one embodiment, the device for pole piece lithium supplement further comprises a lithium supplement pole piece collecting mechanism, the lithium supplement pole piece collecting mechanism is located at the downstream of the two compression rollers, and the lithium supplement pole piece collecting mechanism is used for collecting the pole piece with the active material layer adhered with the lithium foil.
In one embodiment, the lithium film supplying mechanism, the transfer film take-up mechanism, and the tape supplying mechanism are provided in one or two groups, respectively, depending on whether the active material layer is provided on one or both surfaces of the current collector.
The utility model has the advantages that; compared with the background art, due to the arrangement of the strip providing mechanism, the pressure of a lithium film coated on the pole piece in the lithium supplementing process can be reduced by the strip provided by the strip providing mechanism, so that damage to the lithium supplementing pole piece and the lithium film transfer film after lithium supplementing is reduced.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of an apparatus for pole piece lithium supplement according to the present invention.
Fig. 2 is a schematic diagram of a rolling mechanism of the device for pole piece lithium supplement according to the present invention.
Fig. 3 is a schematic diagram of a second embodiment of the device for pole piece lithium supplement according to the present invention.
Wherein the reference numerals are as follows:
1 auxiliary film of rolling mechanism A
11 compression roller 33 auxiliary film collecting mechanism
G-gap C lithium film
2 Pole piece providing mechanism L0 lithium belt
P0 Pole piece L1 lithium foil
P01 current collector 4 strip supply mechanism
P02 active material layer 41 strip release mechanism
R blank current collector 42 strip take-up mechanism
3 lithium film supply mechanism S strip
31 rolling mechanism S1 base material
311 transfer film supply mechanism S2 attachment layer
T transfer film 5 transfer film collecting mechanism
312 lithium strip supply mechanism P1 lithium supplement electrode sheet
313 roller 6 lithium supplement electrode piece collecting mechanism
32 auxiliary film supply mechanism
Detailed Description
The accompanying drawings illustrate embodiments of the present invention and it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms, and therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention.
Further, expressions of directions indicated for explaining operations and configurations of respective members in the embodiment, such as upper, lower, left, right, front, and rear, are not absolute but relative, and although these indications are appropriate when the respective members are in the positions shown in the drawings, when the positions are changed, the directions should be interpreted differently to correspond to the changes.
Fig. 1 is a schematic diagram of a first embodiment of an apparatus for pole piece lithium supplement according to the present invention.
Fig. 2 is a schematic diagram of a rolling mechanism of the device for pole piece lithium supplement according to the present invention.
As shown in fig. 1, the device for lithium supplement of the pole piece comprises a rolling mechanism 1, a pole piece providing mechanism 2 and a lithium film providing mechanism 3. According to the actual situation, the device for supplementing lithium to the pole piece can also comprise a transfer film collecting mechanism 5. According to the actual situation, the device for pole piece lithium supplement can also comprise a lithium supplement pole piece collecting mechanism 6.
The pole piece P0 includes a current collector P01 and an active material layer P02 intermittently disposed on the surface of the current collector P01. In fig. 1, between the intermittent active material layers P02 is a blank current collector region R, that is, a portion on the surface of the current collector P01 where the active material layer P02 is not provided. In fig. 1, the active material layers P02 on both surfaces of the current collector P01 are symmetrically distributed with respect to the current collector P01. Of course, the active material layer P02 may be provided on only one surface of the current collector P01. As shown in fig. 1, the pole piece supply mechanism 2 may be a roller, so that the pole piece supply mechanism 2 unwinds the pole piece P0 in the form of a roll.
The roll pressing mechanism 1 includes two press rolls 11. A gap G is left between the two press rolls 11.
The pole piece supply means 2 are located upstream of the two pressure rollers 11. The pole piece supply mechanism 2 is used to supply a pole piece P0 between two pressure rollers 11.
The lithium film supply mechanism 3 is located upstream of the two press rollers 11. The lithium film providing mechanism 3 is for providing a lithium film C. The lithium film C includes a transfer film T and a lithium foil L1. Lithium foil L1 was adhered to transfer film T and faced active material layer P02 of pole piece P0. In fig. 1, the lithium foil L1 is continuously adhered to the transfer film T.
In fig. 1, the lithium film supply mechanism 3 includes a rolling mechanism 31. The lithium film supplying mechanism 3 may further include an auxiliary film supplying mechanism 32 depending on the actual situation. The lithium film supplying mechanism 3 may further include an auxiliary film take-up mechanism 33 depending on the actual situation.
The rolling mechanism 31 is used to adhere the lithium foil L1 to the transfer film T. In fig. 1, a rolling mechanism 31 is used to adhere a continuous lithium foil L1 to the transfer film T. In fig. 1, the rolling mechanism 31 includes a transfer film supply mechanism 311, a lithium ribbon supply mechanism 312, and two rolling rollers 313. The transfer film supply mechanism 311 is for supplying the transfer film T between the two nip rollers 313. As shown in fig. 1, the transfer film supply mechanism 311 is a roller, so that the transfer film supply mechanism 311 serves to unwind the transfer film T in the form of a roll. The lithium tape supply mechanism 312 is used to supply the lithium tape L0 between the two nip rollers 313. As shown in fig. 1, the lithium ribbon supply mechanism 312 is a roller, so that the lithium ribbon supply mechanism 312 serves to unwind the lithium ribbon L0 in a roll form. Two rolling rollers 313 are used to roll the lithium tape L0 and the transfer film T to roll the lithium tape L0 into a lithium foil L1 and adhere the lithium foil L1 to the transfer film T to form a lithium film C. In other words, the adhesion between the lithium foil L1 and the transfer film T is greater than the adhesion between the lithium foil L1 and the nip roller 313 (on the opposite side of the lithium foil L1 from the transfer film T). In fig. 1, two rollers 313 roll the lithium tape L0 into a lithium foil L1 and continuously adhere the lithium foil L1 to the transfer film T.
The auxiliary film supply mechanism 32 is located upstream of the rolling mechanism 31. The auxiliary film supply mechanism 32 is for supplying the auxiliary film a to the rolling mechanism 31 (specifically, between the two rolling rollers 313). In other words, the adhesion between the lithium foil L1 and the transfer film T is greater than the adhesion between the lithium foil L1 and the auxiliary film a, so that the two rollers 313 roll the lithium ribbon L0, the transfer film T, and the auxiliary film a, which enter between the two rollers 313, to roll the lithium ribbon L0 into the lithium foil L1 and continuously adhere the lithium foil L1 to the transfer film T to form the lithium film C. As shown in fig. 1, the auxiliary film supply mechanism 32 is a roller, so that the auxiliary film supply mechanism 32 is used to unwind the auxiliary film a in the form of a roll.
The auxiliary film take-up mechanism 33 is located downstream of the rolling mechanism 31. The auxiliary film take-up mechanism 33 serves to take up the auxiliary film a passing through the rolling mechanism 31 (specifically, between the two rolls 313) to recover the auxiliary film a while providing a traction force to the auxiliary film a. Note that the auxiliary film supply mechanism 32 and the auxiliary film take-up mechanism 33 may be omitted, and in this case, it is only necessary that the adhesion between the lithium foil L1 and the transfer film T be greater than the adhesion between the lithium foil L1 and the nip roller 313 (on the side of the lithium foil L1 opposite to the transfer film T) to achieve continuous adhesion of the lithium foil L1 to the transfer film T to form the lithium film C. As shown in fig. 1, the auxiliary film take-up mechanism 33 is a roller, so that the auxiliary film take-up mechanism 33 is used to take up the auxiliary film a. The lithium film providing mechanism 3 is not limited to the example shown in fig. 1, and the lithium film C provided by the lithium film providing mechanism 3 may be a finished lithium film C, that is, an off-line formed product of the lithium film C.
The tape supply mechanism 4 is for supplying the tape S between the transfer film T of the lithium film C and the pressing roller 11 on the side corresponding thereto. The strip S comprises a base material S1 and an adhesion layer S2 discontinuously arranged on the base material S1, wherein the adhesion layer S2 can correspond to an active material layer P02 of a pole piece P0. The base material S1 is positioned between the adhesion layer S2 and the transfer film T of the lithium film C, and the adhesion layer S2 is positioned between one of the pressing rollers 11 and the base material S1. The material of the substrate S1 may be selected from any suitable known materials as long as it has. Similarly, any suitable known material may be selected as the material of the adhesion layer S2 as long as it has. The adhesion layer S2 may be provided by coating.
The tape supply mechanism 4 includes a tape pay-out mechanism 41 and a tape take-up mechanism 42 provided upstream and downstream of the two press rollers 11, respectively. The tape discharging mechanism 41 is for discharging the tape S to the two press rollers 11, and as shown in fig. 1, the tape discharging mechanism 41 is a roller, so that the tape discharging mechanism 41 is for discharging the tape S in a roll form. The strip take-up mechanism 42 is used to take up the strip S passing through the two press rolls while providing a traction force to the strip S. As shown in fig. 1, the strip take-up mechanism 42 is a roller, so that the strip take-up mechanism 42 is used to take up the strip S.
The size of the gap G between the two press rollers 11 is smaller than the sum of the thicknesses of the adhesion layer S2, the substrate S1, the lithium film C, the current collector P01 and the active material layer P02, and is larger than the sum of the thicknesses of the substrate S1, the lithium film C and the current collector P01. The roll pressing mechanism 1 rolls the tape S, the lithium film C, and the pole piece P0 in a state where the adhesion layer S2 corresponds to the active material layer P02 of the pole piece P0, and the lithium foil L1 in the lithium film C is intermittently adhered to the active material layer P02. And the remaining portion of the lithium foil L1 except for intermittently adhered to the active material layer P02 was intermittently remained on the transfer film T.
The transfer film take-up mechanism 5 is located downstream of the two press rollers 11. The transfer film take-up mechanism 5 serves to take up the transfer film T passing through the two press rollers 11 while providing a traction force of the lithium film C. As shown in fig. 1, the transfer film take-up mechanism 5 is a roller, so that the transfer film take-up mechanism 5 takes up the transfer film T.
The lithium supplement electrode sheet take-up mechanism 6 is located downstream of the two press rolls 11. The lithium supplement electrode sheet collecting mechanism 6 is used for collecting the electrode sheet P0 (namely, the lithium supplement electrode sheet P1) with the active material layer P02 adhered with the lithium foil L1, and simultaneously provides traction force for the electrode sheet P0. As shown in fig. 1, the lithium supplement electrode sheet take-up mechanism 6 is a roller, and thus the lithium supplement electrode sheet take-up mechanism 6 is used to take up the lithium supplement electrode sheet P1.
The lithium film supply mechanism 3, the tape supply mechanism 4, and the transfer film take-up mechanism 5 are provided in one or two sets correspondingly in accordance with the arrangement of the active material layer P02 on one or both surfaces of the current collector P01.
In the first embodiment shown in fig. 1, the transfer film T is spaced from the corresponding pressing roller 11 by the tape S provided by the tape providing mechanism 4, and the gap between the two pressing rollers 11 of the pressing mechanism 1 is increased, so that the pressure of the lithium film C coated on the pole piece P0 during lithium supplement is reduced, the damage of the lithium supplemented pole piece P1 and the transfer film T of the lithium film due to large coating force after lithium supplement is reduced, and the quality of the lithium supplemented pole piece P1 is ensured. In the first embodiment shown in fig. 1, tape collecting mechanism 42, transfer film collecting mechanism 5, and lithium supplement electrode sheet collecting mechanism 6 provide three traction forces to one side of pole sheet P0, when active material layer P02 of supplemented lithium electrode sheet P1 leaves gap G and blank current collector region R of pole sheet P0 enters gap G, these traction forces and the adhesion force of transfer film T to lithium foil L1 break lithium foil L1 attached to active material layer P02 of supplemented lithium electrode sheet P1 and the remaining lithium foil L1 on transfer film T, and as intermittent active material layer P02 continuously enters gap G and then comes out from gap G, the remaining part of lithium foil L1 except for intermittent adhesion to active material layer P02 is intermittently retained on transfer film T. The intermittent breaking of the lithium foil L1 on the transfer film T can be made smoother and more precise than the one-sided provision of two traction forces of the pole piece of the background art.
Fig. 3 is a schematic diagram of a second embodiment of the device for pole piece lithium supplement according to the present invention. Note that components having the same structures as those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted. Further, the description of the same actions and actions as those of the first embodiment will be omitted.
In contrast to the first exemplary embodiment of the device for pole piece lithium replenishment of fig. 1: in the second embodiment, the base material S1 is located between the adhesion layer S2 and one of the pressing rollers 11, and the adhesion layer S2 is located between the transfer film T of the lithium film C and the base material S1. In other words, the strip S of the second embodiment is reversed with respect to the strip S of the first embodiment.
In the second embodiment shown in fig. 3, due to the arrangement of the strip S, the gap G between the two press rollers 11 of the rolling mechanism 1 is increased, so that the pressure of the lithium-coated film C when the pole piece P0 is subjected to lithium supplementation is reduced, the damage of the lithium-supplemented pole piece P1 and the transfer film T of the lithium film C due to large coating force after lithium supplementation is reduced, and the quality of the lithium-supplemented pole piece P1 is ensured. Further, since the intermittently provided adhesion layer S2 is in contact with the transfer film T, the transfer film T is less damaged by friction of the tape S than in the first embodiment.
In summary, compared with the background art, due to the arrangement of the tape providing mechanism 4, the tape S provided by the tape providing mechanism 4 can reduce the pressure of the lithium film C coated on the pole piece P0 during the lithium supplement process, so as to reduce the damage of the lithium supplemented pole piece P1 and the transfer film T of the lithium film C after lithium supplement.
The above detailed description describes exemplary embodiments, but is not intended to limit the combinations explicitly disclosed herein. Thus, unless otherwise specified, various features disclosed herein can be combined together to form a number of additional combinations that are not shown for the sake of brevity.
Claims (10)
1. A device for pole piece lithium supplement comprises a pole piece (P0) and a lithium film supplying mechanism, wherein the pole piece (P0) comprises a current collector (P01) and an active material layer (P02) discontinuously arranged on the surface of the current collector (P01), and the device for pole piece lithium supplement comprises a rolling mechanism (1), a pole piece supplying mechanism (2) and a lithium film supplying mechanism (3);
the rolling mechanism (1) comprises two pressing rollers (11);
the pole piece providing mechanism (2) is positioned at the upstream of the two pressing rollers (11), and the pole piece providing mechanism (2) is used for providing a pole piece (P0) between the two pressing rollers (11);
a lithium film supply mechanism (3) is positioned upstream of the two press rollers (11), the lithium film supply mechanism (3) is used for supplying a lithium film (C), and the lithium film (C) comprises a transfer film (T) and a lithium foil (L1);
it is characterized in that the preparation method is characterized in that,
the device for supplementing lithium to the pole piece also comprises a strip material providing mechanism (4);
the tape providing mechanism (4) is used for providing a tape (S) between the transfer film (T) and the pressing roller (11) on the corresponding side, the tape (S) comprises a base material (S1) and an adhesive layer (S2) discontinuously arranged on the base material (S1), and the adhesive layer (S2) can correspond to an active material layer (P02) of the pole piece (P0);
the rolling mechanism (1) is used for rolling the strip material (S), the lithium film (C) and the pole piece (P0) so as to enable the lithium foil (L1) in the lithium film (C) to be adhered to the active material layer (P02).
2. The device for lithium supplement of the pole piece according to claim 1,
the device for supplementing lithium to the pole piece also comprises a transfer film collecting mechanism (5),
the transfer film take-up mechanism (5) is located downstream of the two press rollers (11), and the transfer film take-up mechanism (5) is used for taking up the transfer film (T) passing through the two press rollers (11).
3. The device for lithium supplement of the pole piece according to claim 1,
the lithium film supply mechanism (3) includes a rolling mechanism (31), and the rolling mechanism (31) is used for adhering the lithium foil (L1) on the transfer film (T).
4. The device for pole piece lithium supplement of claim 3, wherein the lithium film providing mechanism (3) further comprises an auxiliary film providing mechanism (32), the auxiliary film providing mechanism (32) is located upstream of the rolling mechanism (31), and the auxiliary film providing mechanism (32) is used for providing an auxiliary film (A) to the rolling mechanism (31).
5. The device for pole piece lithium supplement of claim 4, wherein the lithium film supply mechanism (3) further comprises an auxiliary film take-up mechanism (33), the auxiliary film take-up mechanism (33) is located downstream of the rolling mechanism (31), and the auxiliary film take-up mechanism (33) is used for taking up the auxiliary film (A) passing through the rolling mechanism (31).
6. The device for pole piece lithium supplement of any one of claims 3 to 5, characterized in that the rolling mechanism (31) comprises a transfer film supply mechanism (311), a lithium belt supply mechanism (312) and two rolling rolls (313),
a transfer film supply mechanism (311) for supplying a transfer film (T) between the two rollers (313),
a lithium tape supply mechanism (312) for supplying a lithium tape (L0) between the two rolls (313),
two rolling rolls (313) are used for rolling the lithium tape (L0) and the transfer film (T) to roll the lithium tape (L0) into a lithium foil (L1) and make the lithium foil (L1) adhere to the transfer film (T) to form a lithium film (C).
7. The device for lithium supplement of the pole piece according to claim 1,
the strip supply mechanism (4) comprises a strip pay-out mechanism (41) and a strip take-up mechanism (42) which are respectively arranged at the upstream and downstream of the two press rolls (11), the strip pay-out mechanism (41) is used for paying out the strip (S) to the two press rolls (11), and the strip take-up mechanism (42) is used for taking up the strip (S) passing through the two press rolls.
8. The device for pole piece lithium supplement of claim 1, characterized in that the substrate (S1) and/or the adhesion layer (S2) has elasticity.
9. The device for lithium supplement of the pole piece according to claim 1,
the device for supplementing lithium to the pole piece also comprises a lithium supplementing pole piece collecting mechanism (6),
the lithium supplement electrode sheet collecting mechanism (6) is positioned at the downstream of the two compression rollers (11), and the lithium supplement electrode sheet collecting mechanism (6) is used for collecting the electrode sheet (P0) of which the active material layer (P02) is adhered with the lithium foil (L1).
10. The device for pole piece lithium supplement of claim 2, characterized in that the lithium film supply mechanism (3), the transfer film take-up mechanism (5) and the tape supply mechanism (4) are correspondingly arranged in one or two groups according to the arrangement of the active material layer (P02) on one or two surfaces of the current collector (P01).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049916.0U CN210040396U (en) | 2019-07-05 | 2019-07-05 | Device for lithium supplement of pole piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921049916.0U CN210040396U (en) | 2019-07-05 | 2019-07-05 | Device for lithium supplement of pole piece |
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| CN210040396U true CN210040396U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186133A (en) * | 2019-07-05 | 2021-01-05 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
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2019
- 2019-07-05 CN CN201921049916.0U patent/CN210040396U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186133A (en) * | 2019-07-05 | 2021-01-05 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
| WO2021004408A1 (en) * | 2019-07-05 | 2021-01-14 | 宁德时代新能源科技股份有限公司 | Device and method for replenishing lithium on pole piece |
| US11437608B2 (en) | 2019-07-05 | 2022-09-06 | Contemporary Amperex Technology Co., Limited | Device and method for supplementing electrode sheet with lithium |
| CN112186133B (en) * | 2019-07-05 | 2024-08-09 | 宁德时代新能源科技股份有限公司 | Device for supplementing lithium to pole piece |
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