CN221041204U - Battery core - Google Patents
Battery core Download PDFInfo
- Publication number
- CN221041204U CN221041204U CN202322466230.4U CN202322466230U CN221041204U CN 221041204 U CN221041204 U CN 221041204U CN 202322466230 U CN202322466230 U CN 202322466230U CN 221041204 U CN221041204 U CN 221041204U
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- Prior art keywords
- current collector
- depressions
- positive
- negative
- recess
- 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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- 239000002002 slurry Substances 0.000 claims abstract description 16
- 239000011267 electrode slurry Substances 0.000 claims description 30
- 239000002131 composite material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000006256 anode slurry Substances 0.000 description 2
- 239000006257 cathode slurry Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model discloses a battery cell, which comprises a laminated body or a winding body, wherein the laminated body or the winding body comprises a plurality of positive pole pieces, a plurality of negative pole pieces and a diaphragm, the positive pole pieces comprise a positive pole current collector, the front surface and the back surface of the positive pole current collector are respectively provided with a plurality of first depressions and a plurality of second depressions, the first depressions and the second depressions are in one-to-one correspondence, the front surface of the positive pole current collector and the inner walls of the first depressions are provided with first positive pole slurry layers, and the back surface of the positive pole current collector and the inner walls of the second depressions are provided with second positive pole slurry layers; the negative pole piece comprises a negative pole current collector, the front surface and the back surface of the negative pole current collector are respectively provided with a plurality of third depressions and a plurality of fourth depressions, the third depressions and the fourth depressions are in one-to-one correspondence, the front surface of the negative pole current collector and the inner walls of the third depressions are provided with a first negative pole slurry layer, and the back surface of the negative pole current collector and the inner walls of the fourth depressions are provided with a second negative pole slurry layer. The utility model can improve the energy density of the battery core.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a battery cell.
Background
The battery core of the existing lithium battery generally comprises an anode current collector and a cathode current collector, wherein the front side and the back side of the anode current collector are respectively provided with a first anode slurry layer and a second anode slurry layer, and the front side and the back side of the cathode current collector are respectively provided with a first cathode slurry layer and a second cathode slurry layer. The front and the back of the positive electrode current collector are flat surfaces, and the front and the back of the negative electrode current collector are flat surfaces, so that the amount of slurry contained in the front and the back of the positive electrode current collector and the front and the back of the negative electrode current collector is limited, the densities of active substances in the first positive electrode slurry layer, the second positive electrode slurry layer, the first negative electrode slurry layer and the second negative electrode slurry layer are not high, the energy densities of the positive electrode plate and the negative electrode plate are not high, and the energy density of the battery core is not high. In order to improve the energy density of the battery cell, the positive electrode plate and the negative electrode plate are rolled before being laminated or wound, and the first positive electrode slurry layer, the second positive electrode slurry layer, the first negative electrode slurry layer and the second negative electrode slurry layer are further compacted so as to achieve the purpose of improving the energy density of the positive electrode plate and the negative electrode plate, thereby achieving the purpose of improving the energy density of the battery cell. However, the positive pole piece and the negative pole piece can be stretched after being rolled, so that the strength of the positive pole piece and the negative pole piece is reduced, the plasticity of the original materials is lost, and the quality of the battery cell is affected due to the fact that the positive pole piece and the negative pole piece are easy to crack in the process of manufacturing the battery cell by the positive pole piece and the negative pole piece.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model provides the battery cell, which can improve the energy density of the battery cell and ensure the quality of the battery cell.
The technical scheme adopted for solving the technical problems is as follows:
The battery cell comprises a laminated body or a winding body, wherein the laminated body or the winding body comprises a plurality of positive pole pieces, a plurality of negative pole pieces and a diaphragm, the diaphragm is arranged between the positive pole pieces and the negative pole pieces, the positive pole pieces comprise a positive pole current collector, the front surface and the back surface of the positive pole current collector are respectively provided with a plurality of first depressions and a plurality of second depressions, the first depressions and the second depressions are in one-to-one correspondence, the front surface of the positive pole current collector and the inner walls of the first depressions are provided with first positive pole slurry layers, and the back surface of the positive pole current collector and the inner walls of the second depressions are provided with second positive pole slurry layers; the negative pole piece comprises a negative pole current collector, the front surface and the back surface of the negative pole current collector are respectively provided with a plurality of third depressions and a plurality of fourth depressions, the third depressions and the fourth depressions are in one-to-one correspondence, the front surface of the negative pole current collector and the inner walls of the third depressions are provided with a first negative pole slurry layer, and the back surface of the negative pole current collector and the inner walls of the fourth depressions are provided with a second negative pole slurry layer.
As a preferable technical scheme, a first concave position is respectively arranged at a position corresponding to each first concave position on one surface of the first positive electrode slurry layer, which is far away from the positive electrode current collector, and a second concave position is respectively arranged at a position corresponding to each second concave position on one surface of the second positive electrode slurry layer, which is far away from the positive electrode current collector. .
As a preferable technical scheme, a third concave position is respectively arranged at a position corresponding to each third concave position on one surface of the first negative electrode slurry layer, which is far away from the negative electrode current collector, and a fourth concave position is respectively arranged at a position corresponding to each fourth concave position on one surface of the second negative electrode slurry layer, which is far away from the negative electrode current collector.
As a preferable technical scheme, the cross-sectional shapes of the first recess, the second recess, the third recess and the fourth recess are all round, triangular, rectangular, parallelogram or special-shaped.
As a preferable technical scheme, the first recess, the second recess, the third recess and the fourth recess are the same in size.
As a preferable technical scheme, the sum of the depth of the first recess and the depth of the corresponding second recess is smaller than 1/2 of the thickness of the positive electrode current collector, and the sum of the depth of the third recess and the depth of the corresponding fourth recess is smaller than 1/2 of the thickness of the negative electrode current collector.
As a preferable technical scheme, the positive current collector is an aluminum foil current collector or a composite current collector, and the negative current collector is a copper foil current collector or a composite current collector.
As a preferred technical scheme, the battery cell comprises a laminated body; the positive pole pieces and the negative pole pieces are alternately stacked from bottom to top, and the diaphragm is Z-shaped and is spaced between each adjacent positive pole piece and negative pole piece.
As a preferred technical scheme, the battery cell comprises a laminated body; the positive pole pieces and the negative pole pieces are alternately stacked from bottom to top, and the separator is spirally spaced between each adjacent positive pole piece and negative pole piece.
As a preferable technical scheme, the battery cell comprises a winding body; the positive pole pieces are arranged on the front face of the diaphragm at intervals along the length direction of the diaphragm, and the negative pole pieces are arranged on the back face of the diaphragm at intervals along the length direction of the diaphragm.
The beneficial effects of the utility model are as follows: according to the utility model, through the first depressions and the second depressions respectively arranged on the front side and the back side of the positive electrode current collector and the third depressions and the fourth depressions respectively arranged on the front side and the back side of the negative electrode current collector, the first depressions, the second depressions, the third depressions and the fourth depressions can contain more slurry, so that the densities of active substances in the first positive electrode slurry layer, the second positive electrode slurry layer, the first negative electrode slurry layer and the second negative electrode slurry layer are increased, the energy densities of a positive electrode pole piece and a negative electrode pole piece are increased, the energy density of an electric core is increased, and the first depressions and the second depressions are in one-to-one correspondence, and the third depressions and the fourth depressions are in one-to-one correspondence, so that the thicknesses of the parts of the positive electrode current collector, which are not provided with the first depressions and the second depressions, and the parts of the negative electrode current collector, which are not provided with the third depressions and the fourth depressions, are still maintain the original thicknesses, and the strength and the plasticity of original materials are ensured, and the strength and the plasticity of the positive electrode piece and the negative electrode piece are still easy to crack in the manufacturing process of the positive electrode piece and the negative electrode piece.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a battery cell according to the present utility model;
FIG. 2 is a schematic cross-sectional view of the positive electrode tab of the cell of FIG. 1;
FIG. 3 is a schematic view of the front surface of the positive current collector of the positive electrode tab of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the positive electrode current collector shown in FIG. 3;
FIG. 5 is a schematic cross-sectional view of the negative electrode tab of the cell of FIG. 1;
fig. 6 is a schematic structural diagram of an alternative embodiment of a battery cell provided by the present utility model;
fig. 7 is a schematic structural diagram of another alternative embodiment of a battery cell provided by the present utility model;
Fig. 8 is a partial schematic view of the cell of fig. 7.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1, the battery cell provided by the present utility model includes a stacked body. The laminate includes a plurality of positive electrode tabs 10, a plurality of negative electrode tabs 20, and a separator 30. The separator 30 is disposed between the plurality of positive electrode tabs 10 and the plurality of negative electrode tabs 20. Specifically, the plurality of positive electrode sheets 10 and the plurality of negative electrode sheets 20 are alternately stacked from bottom to top, and the separator 30 is zigzag-shaped and spaced between each adjacent positive electrode sheet 10 and negative electrode sheet 20. In this embodiment, the number of the positive electrode pieces 10 is one more than the number of the negative electrode pieces 20, that is, the electrode pieces at the lowest layer and the uppermost layer are both positive electrode pieces 10. The separator 30 covers the uppermost positive electrode tab 10.
As shown in connection with fig. 2 to 4, the positive electrode tab 10 includes a positive electrode current collector 11. The front and back surfaces of the positive electrode current collector 11 are respectively provided with a plurality of first recesses 111 and a plurality of second recesses 112. The first recesses 111 and the second recesses 112 are in one-to-one correspondence, that is, the positions of the second recesses 112 on the back surface of the positive current collector 11 and the positions of the first recesses 111 on the front surface of the positive current collector 11 are in one-to-one correspondence, or the projections of the second recesses 112 on the horizontal plane and the projections of the first recesses 111 on the horizontal plane are in one-to-one coincidence. The front surface of the positive electrode current collector 11 and the inner walls of the plurality of first recesses 111 are provided with a first positive electrode slurry layer 12. The back surface of the positive electrode current collector 11 and the inner walls of the plurality of second recesses 112 are provided with a second positive electrode slurry layer 13. The number of the first recesses 111 and the second recesses 112 may be set according to practical situations.
In this embodiment, the plurality of first recesses 111 are uniformly distributed on the front surface of the positive electrode current collector 11. The plurality of second recesses 112 are uniformly distributed on the back surface of the positive electrode current collector 11. It will be appreciated that the first plurality of recesses 111, the second plurality of recesses 112 may also be unevenly distributed.
The positive electrode current collector 11 is an aluminum foil current collector or a composite current collector.
As shown in connection with fig. 5, the negative electrode tab 20 includes a negative electrode current collector 21. The front and back surfaces of the negative electrode current collector 21 are respectively provided with a plurality of third recesses 211 and a plurality of fourth recesses 212. The third recesses 211 and the fourth recesses 212 are in one-to-one correspondence, that is, the positions of the fourth recesses 212 on the back surface of the negative electrode current collector 21 and the positions of the third recesses 211 on the front surface of the negative electrode current collector 21 are in one-to-one correspondence, or the projections of the second recesses 112 on the horizontal plane and the projections of the first recesses 111 on the horizontal plane are in one-to-one coincidence. The front surface of the negative electrode current collector 21 and the inner walls of the plurality of third recesses 211 are provided with a first negative electrode slurry layer 22. The back surface of the negative electrode current collector 21 and the inner walls of the plurality of fourth recesses 212 are provided with a second negative electrode slurry layer 23. The number of the third recesses 211 and the fourth recesses 212 may be set according to actual situations.
In this embodiment, the third recesses 211 are uniformly distributed on the front surface of the negative electrode current collector 21, and the fourth recesses 212 are uniformly distributed on the back surface of the negative electrode current collector 21. It will be appreciated that the third recesses 211 and the fourth recesses 212 may also be unevenly distributed.
The negative electrode current collector 21 is a copper foil current collector or a composite current collector.
With the above structure, the present utility model can accommodate more slurry through the first and second recesses 111, 112 provided on the front and rear surfaces of the positive electrode current collector 11, respectively, the first and second recesses 111, 112 can increase the density of active materials in the first and second positive electrode slurry layers 12, 13, thereby increasing the energy density of the positive electrode tab 10, and can accommodate more slurry through the third and fourth recesses 211, 212 provided on the front and rear surfaces of the negative electrode current collector 21, respectively, the third and fourth recesses 211, 212 can increase the density of active materials in the first and second negative electrode slurry layers 22, 23, thereby increasing the energy density of the negative electrode tab 20, thus increasing the energy density of the battery, and because the first depressions 111 and the second depressions 112 on the positive current collector 11 are in one-to-one correspondence, and the third depressions 211 and the fourth depressions 212 on the negative current collector 21 are in one-to-one correspondence, the parts of the positive current collector 11, which are not provided with the first depressions 111 and the second depressions 112, and the parts of the negative current collector 21, which are not provided with the third depressions 211 and the fourth depressions 212, can still keep the original thickness, have the strength and the plasticity of the original materials, thereby ensuring the strength and the plasticity of the positive electrode pole piece 10 and the negative electrode pole piece 20, ensuring the quality of the battery core because the positive electrode pole piece 10 and the negative electrode pole piece 20 are not easy to crack in the process of manufacturing the battery core by using the positive electrode pole piece 10, the negative electrode pole piece 20 and the diaphragm 30.
In this embodiment, the first recess 111, the second recess 112, the third recess 211, and the fourth recess 212 have the same size and shape. In this embodiment, the cross-sectional shapes of the first recess 111, the second recess 112, the third recess 211 and the fourth recess 212 are all circular, and it is understood that the cross-sectional shapes of the first recess 111, the second recess 112, the third recess 211 and the fourth recess 212 may be other, for example, triangular, rectangular, parallelogram, irregular shape, etc., and may be set according to practical situations. It will be appreciated that in other embodiments, the depths of the first recess 111 and the second recess 112 may be different, as may the depths of the third recess 211 and the fourth recess 212. The first recess 111, the second recess 112, the third recess 211 and the fourth recess 212 may be different in size and shape, and may be set according to practical situations.
The sum of the depth of the first recess 111 and the depth of the corresponding second recess 112 is less than 1/2 of the thickness of the positive electrode current collector 11, preferably 1/3-1/2 of the thickness of the positive electrode current collector 11. This depth can ensure the strength of the portion of the positive electrode current collector 11 where the first recess 111 and the second recess 112 are provided. The sum of the depth of the third recess 211 and the depth of the corresponding fourth recess 212 is less than 1/2 of the thickness of the negative electrode current collector 21, preferably 1/3-1/2 of the thickness of the negative electrode current collector 21. This depth can ensure the strength of the portion of negative electrode current collector 21 where third recess 211 and fourth recess 212 are provided.
Further, a first concave portion 121 is disposed on a surface of the first positive electrode slurry layer 12 away from the positive electrode current collector 11 at a position corresponding to each first concave portion 111, and a second concave portion 131 is disposed on a surface of the second positive electrode slurry layer 13 away from the positive electrode current collector 11 at a position corresponding to each second concave portion 112. The first concave position 121 and the second concave position 131 are arranged. One surface of the first negative electrode slurry layer 22, which is far away from the negative electrode current collector 21, is provided with a third concave position 221 at a position corresponding to each third concave 211, and one surface of the second negative electrode slurry layer 23, which is far away from the negative electrode current collector 21, is provided with a fourth concave position 231 at a position corresponding to each fourth concave 212. The first, second, third and fourth recesses 121, 131, 221, 231 may form spaces with the separator 30, respectively, which may reduce absorption resistance to the electrolyte, thereby improving absorption speed of the electrolyte by the battery cell.
The cross-sectional shapes of the first concave portion 121, the second concave portion 131, the third concave portion 221, and the fourth concave portion 231 are matched with the cross-sectional shapes of the first concave portion 111, the second concave portion 112, the third concave portion 211, and the fourth concave portion 212.
Referring to fig. 6, in an alternative embodiment of the battery cell, unlike the previous embodiment, the separator 30 is spirally spaced between each adjacent positive electrode tab 10 and negative electrode tab 20. The technical effect the scheme can achieve is the same as that of the scheme.
Referring to fig. 7 and 8, in another alternative embodiment of the battery cell, the battery cell includes a winding body, unlike the previous embodiment. The wound body includes a plurality of positive electrode sheets 10, a plurality of negative electrode sheets 20, and a separator 30. The separator 30 is disposed between the plurality of positive electrode tabs 10 and the plurality of negative electrode tabs 20. Specifically, the plurality of positive electrode pieces 10 are disposed on the front surface of the separator 30 at intervals along the longitudinal direction of the separator 30, and the plurality of negative electrode pieces 20 are disposed on the back surface of the separator 30 at intervals along the longitudinal direction of the separator 30. The number of positive electrode tabs 10 and negative electrode tabs 20 of the present embodiment is the same. The battery cell energy density can be improved by the scheme, and in the process of manufacturing the battery cells by the positive electrode pole piece 10, the negative electrode pole piece 20 and the diaphragm 30, the positive electrode pole piece 10 and the negative electrode pole piece 20 are not easy to crack, and the quality of the battery cells can be ensured.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. An electrical core comprising a laminate or a wound body including a plurality of positive electrode sheets, a plurality of negative electrode sheets, and a separator disposed between the plurality of positive electrode sheets and the plurality of negative electrode sheets, characterized in that,
The positive pole piece comprises a positive pole current collector, wherein the front surface and the back surface of the positive pole current collector are respectively provided with a plurality of first depressions and a plurality of second depressions, the first depressions and the second depressions are in one-to-one correspondence, the front surface of the positive pole current collector and the inner walls of the first depressions are provided with first positive pole slurry layers, and the back surface of the positive pole current collector and the inner walls of the second depressions are provided with second positive pole slurry layers;
The negative pole piece comprises a negative pole current collector, the front surface and the back surface of the negative pole current collector are respectively provided with a plurality of third depressions and a plurality of fourth depressions, the third depressions and the fourth depressions are in one-to-one correspondence, the front surface of the negative pole current collector and the inner walls of the third depressions are provided with a first negative pole slurry layer, and the back surface of the negative pole current collector and the inner walls of the fourth depressions are provided with a second negative pole slurry layer.
2. The battery cell according to claim 1, wherein a surface of the first positive electrode slurry layer, which is far away from the positive electrode current collector, is provided with a first concave position at a position corresponding to each first concave, and a surface of the second positive electrode slurry layer, which is far away from the positive electrode current collector, is provided with a second concave position at a position corresponding to each second concave.
3. The cell of claim 1, wherein a surface of the first negative electrode slurry layer away from the negative electrode current collector is provided with a third concave position at a position corresponding to each third concave, and a surface of the second negative electrode slurry layer away from the negative electrode current collector is provided with a fourth concave position at a position corresponding to each fourth concave.
4. The cell of claim 1, wherein the first, second, third, and fourth recesses are each circular, triangular, rectangular, or parallelogram in cross-sectional shape.
5. The cell of claim 1, wherein the first recess, the second recess, the third recess, and the fourth recess are the same size.
6. The cell of claim 1, wherein the sum of the depth of the first recess and the depth of the corresponding second recess is less than 1/2 of the thickness of the positive current collector, and the sum of the depth of the third recess and the depth of the corresponding fourth recess is less than 1/2 of the thickness of the negative current collector.
7. The cell of claim 1, wherein the positive current collector is an aluminum foil current collector or a composite current collector and the negative current collector is a copper foil current collector or a composite current collector.
8. The cell of claim 1, wherein the cell comprises a laminate; the positive pole pieces and the negative pole pieces are alternately stacked from bottom to top, and the diaphragm is Z-shaped and is spaced between each adjacent positive pole piece and negative pole piece.
9. The cell of claim 1, wherein the cell comprises a laminate; the positive pole pieces and the negative pole pieces are alternately stacked from bottom to top, and the separator is spirally spaced between each adjacent positive pole piece and negative pole piece.
10. The cell of claim 1, wherein the cell comprises a roll; the positive pole pieces are arranged on the front face of the diaphragm at intervals along the length direction of the diaphragm, and the negative pole pieces are arranged on the back face of the diaphragm at intervals along the length direction of the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322466230.4U CN221041204U (en) | 2023-09-11 | 2023-09-11 | Battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322466230.4U CN221041204U (en) | 2023-09-11 | 2023-09-11 | Battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221041204U true CN221041204U (en) | 2024-05-28 |
Family
ID=91133612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322466230.4U Active CN221041204U (en) | 2023-09-11 | 2023-09-11 | Battery core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221041204U (en) |
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2023
- 2023-09-11 CN CN202322466230.4U patent/CN221041204U/en active Active
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