CN219759616U - Polymer high multiplying power lithium ion battery pole piece structure - Google Patents
Polymer high multiplying power lithium ion battery pole piece structure Download PDFInfo
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- CN219759616U CN219759616U CN202320572996.8U CN202320572996U CN219759616U CN 219759616 U CN219759616 U CN 219759616U CN 202320572996 U CN202320572996 U CN 202320572996U CN 219759616 U CN219759616 U CN 219759616U
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- CN
- China
- Prior art keywords
- electrode
- lithium ion
- aluminum foil
- pole piece
- ion battery
- 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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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 229920000642 polymer Polymers 0.000 title claims abstract description 18
- 239000011888 foil Substances 0.000 claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011889 copper foil Substances 0.000 claims abstract description 20
- 239000006255 coating slurry Substances 0.000 claims description 15
- 239000005030 aluminium foil Substances 0.000 claims description 2
- 238000007755 gap coating Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 2
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000006245 Carbon black Super-P Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- -1 lithium nickel cobalt aluminum Chemical compound 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a pole piece structure of a polymer high-rate lithium ion battery, and belongs to the field of pole pieces of lithium ion batteries. The utility model relates to a pole piece structure of a polymer high-rate lithium ion battery, which comprises an anode aluminum foil and a cathode copper foil; the positive electrode aluminum foil is characterized by further comprising a first electrode gap which is arranged between the upper end and the lower end of the positive electrode aluminum foil, second electrode gaps are arranged between the upper end and the lower end of the negative electrode copper foil, an upper smearing cavity is arranged on two sides of one of the first electrode gap and one of the second electrode gaps, and a lower smearing cavity is arranged on two sides of the other one of the first electrode gap and one of the second electrode gaps. The utility model solves the problem of higher internal resistance and lower performance of the prior polymer battery positive plate battery, adopts double-gap coating by the positive aluminum foil and the negative copper foil, and welds the tab in the middle of the pole plate, thereby effectively reducing the internal resistance of the battery, reducing the resistance and improving the multiplying power performance.
Description
Technical Field
The utility model relates to the field of lithium ion battery pole pieces, in particular to a polymer high-rate lithium ion battery pole piece structure.
Background
The lithium ion battery is a secondary battery, which mainly relies on lithium ions to move between an anode and a cathode, and is inserted and removed back and forth between the two electrodes in the charging and discharging process, the anode is removed from the anode and inserted into the cathode through electrolyte during charging, the cathode is in a lithium-rich state, and the electrode is in the opposite direction during discharging, the electrode is simply the core of the battery, the electrode is a positive negative electrode, the electrode plate adopts a conducting plate, an insulating plate and a heating system and is also provided with an electric wire connected with the outside, a temperature sensor is arranged between the insulating plate and the conducting plate, two ends of the temperature sensor can be connected with a terminal through the electric wire, the heating electrode plate has a temperature control function, and the inner side of the heating electrode plate is provided with a heat dissipation reticulate pattern, so that local heat can be fully radiated, and the lithium ion battery is more convenient to use and more comfortable and safer;
the Chinese patent with publication number of CN207265159U discloses a multi-section type polymer battery positive plate structure, which comprises a positive plate, a positive electrode dressing, an aluminum foil, a sectionalized aluminum foil gap and a lug welding position, wherein the left end of the positive plate is provided with the lug welding position, the right side of the lug welding position is connected with the aluminum foil, the right side of the aluminum foil is connected with the positive electrode dressing, the sectionalized aluminum foil gap is arranged on the positive electrode dressing, the multi-section type polymer battery positive plate structure provides a multi-section type positive plate winding structure, no matter the winding mode is positive winding or rewinding, when the total length of the positive plate is 400-800mm, 1 gap position of 2-3mm is coated at the middle part of the positive plate during coating, the whole section of the positive plate is divided into 2 sections, when the total length of the positive plate is 800-1200mm, 2 gap positions of 2-3mm are coated at the middle part of the positive plate during coating, and the whole section of the positive plate is divided into 3 sections.
In the practical use process of the positive plate structure of the polymer battery, the subsequent tab mounting position is one side, so that the internal resistance of the battery is larger, and the performance is lower; therefore, the existing requirements are not met, and a polymer high-rate lithium ion battery pole piece structure is provided.
Disclosure of Invention
The utility model aims to provide a pole piece structure of a polymer high-rate lithium ion battery, wherein a positive electrode mounting groove is formed in one side outside a first electrode gap, a negative electrode mounting groove is formed in one side outside a second electrode gap, and in the actual use process, a positive aluminum foil and a negative copper foil are coated by double gaps, and a pole lug is welded in the middle of the pole piece, so that the internal resistance of the battery is effectively reduced, the resistance is reduced, the rate performance is improved, and the problems in the background art are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a pole piece structure of a polymer high-rate lithium ion battery comprises an anode aluminum foil and a cathode copper foil;
the positive electrode aluminum foil is characterized by further comprising a first electrode gap which is arranged between the upper end and the lower end of the positive electrode aluminum foil, second electrode gaps are arranged between the upper end and the lower end of the negative electrode copper foil, an upper smearing cavity is arranged on two sides of one of the first electrode gap and one of the second electrode gaps, and a lower smearing cavity is arranged on two sides of the other one of the first electrode gap and one of the second electrode gaps.
Preferably, the two sides of the upper end and the lower end of the positive electrode aluminum foil are respectively provided with first coating slurry, and the two sides of the upper end and the lower end of the negative electrode copper foil are respectively provided with second coating slurry.
Preferably, the second coating slurry is adhered and fixed with the negative electrode copper foil, and the first coating slurry is adhered and fixed with the positive electrode aluminum foil.
Preferably, one end of the first electrode gap outside is provided with a positive electrode mounting groove.
Preferably, an end of the second electrode gap outside is provided with a negative electrode mounting groove.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the first electrode gap and the second electrode gap are respectively arranged in the middle of the inside of the positive aluminum foil and the negative copper foil, the positive electrode mounting groove is arranged on one side of the outside of the first electrode gap, the negative electrode mounting groove is arranged on one side of the outside of the second electrode gap, and in the actual use process, the positive aluminum foil and the negative copper foil are coated by double gaps, and the lug is welded in the middle of the pole piece, so that the internal resistance of the battery is effectively reduced, the resistance is reduced, and the rate performance is improved.
Drawings
FIG. 1 is a top view of the external structure of the positive and negative aluminum foils of the present utility model;
fig. 2 is a front view showing the external structure of the positive and negative aluminum foils of the present utility model.
In the figure: 1. positive aluminum foil; 2. a negative copper foil; 3. a first application slurry; 4. a second coating slurry; 5. a first electrode gap; 6. a second electrode gap; 7. a positive electrode mounting groove; 8. a negative electrode mounting groove; 9. an upper smearing cavity; 10. and a lower smearing cavity.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order to solve the problems of larger internal resistance and lower performance of the battery caused by the fact that the installation position of the subsequent tab is one side in the prior art, referring to fig. 1 and 2, the present embodiment provides the following technical scheme:
a pole piece structure of a polymer high-rate lithium ion battery comprises an anode aluminum foil 1 and a cathode copper foil 2; the lithium nickel cobalt aluminum foil comprises a positive electrode aluminum foil body 1, a negative electrode copper foil body 2, a first electrode gap 5, a second electrode gap 6, a first electrode gap 5 and a second electrode gap 6, a lower smearing cavity 10, a first smearing slurry 3, a second smearing slurry 4, a lithium cobalt oxide, a nickel cobalt lithium manganate and a lithium manganate, wherein the first electrode gap 5 is arranged between the upper end and the lower end of the positive electrode aluminum foil body 1, the second smearing slurry 4 is fixedly adhered to the negative electrode copper foil body 2, the first smearing slurry 3 is fixedly adhered to the positive electrode aluminum foil body 1, the first smearing slurry 3 is a slurry formed by mixing lithium cobalt oxide, nickel cobalt lithium manganate and lithium manganate, the second smearing slurry 4 is a glue solution prepared by CMC and deionized water, the Super-P is well dispersed, the mesophase carbon microsphere is well dispersed, and finally the SBR is added, and the mixture is formed.
The one end outside first electrode clearance 5 is provided with anodal electrode mounting groove 7, and the one end outside second electrode clearance 6 is provided with negative electrode mounting groove 8, and one side outside first electrode clearance 5 is provided with anodal electrode mounting groove 7, and one side outside second electrode clearance 6 is provided with negative electrode mounting groove 8, adopts double gap coating by anodal aluminium foil 1 and negative copper foil 2 in the in-service use, welds the utmost point ear in the middle of the pole piece, effectively reduces the battery internal resistance, reduces the resistance, promotes the multiplying power performance.
Working principle: according to fig. 1 and 2, in order to reduce internal resistance of a battery and improve performance of the battery, coating materials are coated in an upper coating cavity 9 and a lower coating cavity 10 at the upper end and the lower end of the outside of an anode aluminum foil 1 and a cathode copper foil 2, coated first coating slurry 3 and coated second coating slurry 4 are coated on two sides of the inside of the upper coating cavity 9 and the lower coating cavity 10 respectively, a first electrode gap 5 is reserved between the two first coating slurries 3, a second electrode gap 6 is reserved between the two second coating slurries 4, and a required tab of the battery can be respectively mounted on an anode electrode mounting groove 7 arranged on one side outside the first electrode gap 5 and a cathode electrode mounting groove 8 arranged on one side outside the second electrode gap 6, and the two first coating slurries 3 and the second coating slurries 4 are directly conducted through the tabs, so that internal resistance of the battery is effectively reduced, a plan is reduced, and rate performance is improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a polymer high multiplying power lithium ion battery pole piece structure, includes anodal aluminium foil (1) and negative pole copper foil (2), its characterized in that:
the aluminum foil anode comprises an anode aluminum foil (1) and is characterized by further comprising a first electrode gap (5) which is arranged in the middle of the upper end and the lower end of the anode aluminum foil (1), wherein second electrode gaps (6) are arranged in the middle of the upper end and the lower end of the anode copper foil (2), upper smearing cavities (9) are formed in two sides of the first electrode gap (5) and two sides of the second electrode gap (6), and lower smearing cavities (10) are formed in two sides of the other first electrode gap (5) and two sides of the second electrode gap (6).
2. The polymer high-rate lithium ion battery pole piece structure according to claim 1, wherein: the two sides of the upper end and the lower end of the anode aluminum foil (1) are respectively provided with a first coating slurry (3), and the two sides of the upper end and the lower end of the cathode copper foil (2) are respectively provided with a second coating slurry (4).
3. The polymer high-rate lithium ion battery pole piece structure according to claim 2, wherein: the second coating slurry (4) is adhered and fixed with the negative copper foil (2), and the first coating slurry (3) is adhered and fixed with the positive aluminum foil (1).
4. The polymer high-rate lithium ion battery pole piece structure according to claim 1, wherein: one end outside the first electrode gap (5) is provided with a positive electrode mounting groove (7).
5. The polymer high-rate lithium ion battery pole piece structure according to claim 1, wherein: one end outside the second electrode gap (6) is provided with a negative electrode mounting groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320572996.8U CN219759616U (en) | 2023-03-22 | 2023-03-22 | Polymer high multiplying power lithium ion battery pole piece structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320572996.8U CN219759616U (en) | 2023-03-22 | 2023-03-22 | Polymer high multiplying power lithium ion battery pole piece structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219759616U true CN219759616U (en) | 2023-09-26 |
Family
ID=88092113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320572996.8U Active CN219759616U (en) | 2023-03-22 | 2023-03-22 | Polymer high multiplying power lithium ion battery pole piece structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219759616U (en) |
-
2023
- 2023-03-22 CN CN202320572996.8U patent/CN219759616U/en active Active
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| GR01 | Patent grant |