CN219286447U - Pole piece of electrodeless ear battery - Google Patents
Pole piece of electrodeless ear battery Download PDFInfo
- Publication number
- CN219286447U CN219286447U CN202320246497.XU CN202320246497U CN219286447U CN 219286447 U CN219286447 U CN 219286447U CN 202320246497 U CN202320246497 U CN 202320246497U CN 219286447 U CN219286447 U CN 219286447U
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- Prior art keywords
- active area
- pole piece
- area
- empty foil
- round hole
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- 238000005520 cutting process Methods 0.000 claims abstract description 54
- 239000011888 foil Substances 0.000 claims abstract description 37
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 3
- 229910001414 potassium ion Inorganic materials 0.000 claims description 3
- 229910001415 sodium ion Inorganic materials 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 8
- 230000000149 penetrating effect Effects 0.000 abstract description 7
- 238000010923 batch production Methods 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Primary Cells (AREA)
Abstract
The application provides a pole piece of an electrodeless ear battery, which comprises an empty foil area and an active area which are adjacently arranged, wherein the empty foil area is arranged along the edge of the long side of the active area; the empty foil area comprises a plurality of cutting sheets which are cut along the direction perpendicular to the long side of the active area along the direction of the long side of the active area; a round hole is arranged between two adjacent cutting sheets, the round hole is arranged at an end angle of the cutting sheet, which is close to one end of the active area, and the round hole is respectively connected with the active area and the two adjacent cutting sheets. The structure can effectively provide the point of the electrolyte penetrating from the empty foil area to the active area for the electrodeless ear battery, and quickens the penetrating rate of the electrolyte; simultaneously, the stress concentration at the tail part of the cutting line can be reduced, and the pole piece is effectively prevented from being split downwards along the cutting line. The device has the advantages of simple structure, lower process cost, higher production efficiency and easiness in batch or large-scale production.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a pole piece of an electrodeless ear battery.
Background
One end of an electrode of the existing electrodeless ear battery is coated with a conductive material, so that the electrode is directly connected with a shell or a specially designed cover plate, and current is directly conducted among an electrode pole piece, the cover plate and the shell, and further point contact of the original battery is changed into 100% surface contact. However, the electrodeless ear battery needs to cut a large amount of empty foil areas of the pole pieces, then knead and level, fold the empty foil inwards in the same direction and weld the empty foil by laser when in curling and packaging, and the whole empty foil is directly connected with the anode and the cathode of the battery shell after welding.
After finishing the arrangement of the empty foil area of the pole piece, the foil materials of the existing full-tab battery are closely stacked together to form a compact structure, and electrolyte is difficult to enter the winding battery core through the compact structure area. In addition, the existing pole piece blank foil cutting mode is easy to cause stress concentration phenomenon at the tail part of a cutting line close to an active area, so that the pole piece is cracked downwards along the cutting line.
Disclosure of Invention
Based on the above, the embodiment of the utility model provides a pole piece of an electrodeless ear battery, which aims to solve the problems that electrolyte of the existing electrodeless ear battery is difficult to permeate into a winding electric core and the like. According to the method and the device, the point of penetration of the electrolyte from the empty foil area to the active area can be effectively provided, and the penetration rate of the electrolyte is accelerated; simultaneously, the stress concentration at the tail part of the cutting line can be reduced, and the pole piece is effectively prevented from being split downwards along the cutting line.
In order to achieve the above purpose, the embodiment of the utility model provides a pole piece of an electrodeless ear battery, which is suitable for the electrodeless ear battery, and comprises an empty foil area and an active area which are adjacently arranged, wherein the empty foil area is arranged along the edge of the long side of the active area;
the empty foil area comprises a plurality of cutting sheets which are cut along the direction perpendicular to the long side of the active area along the direction of the long side of the active area; a round hole is arranged between two adjacent cutting sheets, the round hole is arranged at an end angle of the cutting sheet, which is close to one end of the active area, and the round hole is respectively connected with the active area and the two adjacent cutting sheets.
As a preferred embodiment, the circular hole is tangential to the boundary line between the empty foil region and the active region.
As a preferred embodiment, the round holes are distributed on two adjacent cutting sheets with the same area.
In a preferred embodiment, the diameter of the round hole is 1mm to 3mm.
As a preferred embodiment, the electrodeless ear cell is a lithium ion cell, a sodium ion cell, a magnesium ion cell, or a potassium ion cell.
The pole piece cutting method of the electrodeless ear battery provided by the embodiment of the utility model is suitable for the electrodeless ear battery and comprises the following steps:
s01, cutting the empty foil area of the pole piece along the direction of the long side of the active area of the pole piece and along the direction perpendicular to the long side of the active area, and cutting the empty foil area of the pole piece into a plurality of cutting pieces; an indwelling area is arranged between two adjacent cutting pieces and near the end angle of one end of the active area;
s02, arranging a round hole in each retaining area in the step S01, wherein the round holes are respectively connected with the active area and two adjacent cutting pieces to obtain the pole piece of the electrodeless ear battery.
In a preferred embodiment, in step S02,
the circular holes are tangential to the boundary line between the empty foil area and the active area.
The round holes are distributed on two adjacent cutting sheets, and the areas of the two adjacent cutting sheets are the same.
The aperture of the round hole is preferably 1 mm-3 mm.
According to the method, the round holes are formed in each retention area, so that the point positions of the electrolyte penetrating from the empty foil area to the active area can be effectively provided for the electrodeless ear battery, and the penetrating rate of the electrolyte is accelerated; simultaneously, the stress concentration at the tail part of the cutting line can be reduced, and the pole piece is effectively prevented from being split downwards along the cutting line. The liquid injection efficiency of the electrodeless ear battery can be effectively improved, the structure is simple, the process cost is low, the production efficiency is high, and the batch or large-scale production is easy.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the embodiments.
Drawings
Fig. 1 is a schematic diagram of a front structure of a pole piece of an electrodeless ear cell according to an embodiment of the present utility model.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described in the following embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, 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.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
At present, after finishing the empty foil area of a pole piece, the foil materials of the existing full-tab battery are closely stacked together to form a compact structure, and electrolyte is difficult to enter the winding battery core through the compact structure area. In addition, the existing pole piece blank foil cutting mode is easy to cause stress concentration phenomenon at the tail part of a cutting line close to an active area, so that the pole piece is cracked downwards along the cutting line. Based on this, it is necessary to provide a pole piece of an electrodeless ear cell to solve the above technical problems.
In order to achieve the above objective, as shown in fig. 1, an embodiment of the present utility model provides a pole piece of an electrodeless ear battery, which is suitable for an electrodeless ear battery, and includes an empty foil region 10 and an active region 20 that are adjacently disposed, wherein the empty foil region 10 is disposed along the edge of the long side of the active region 20;
along the direction of the long side of the active region 20, the blank foil region 10 includes a plurality of cut pieces 11 cut in a direction perpendicular to the long side of the active region 20; a circular hole 12 is arranged between two adjacent cutting blades 11, the circular hole 12 is arranged at an end angle of the cutting blade 11, which is close to one end of the active area 20, and the circular hole 12 is respectively connected with the active area 20 and the two adjacent cutting blades 11.
As a preferred embodiment, the circular hole 12 is tangential to the interface of the blank foil region 10 and the active region 20. Therefore, the stress concentration at the tail part of the cutting line can be reduced, the pole piece is effectively prevented from being split downwards along the cutting line, and the penetration of electrolyte can be facilitated.
As a preferred embodiment, the circular holes 12 are distributed in the same area between two adjacent cutting blades 11. Therefore, the stress concentration at the tail part of the cutting line can be reduced, the pole piece is effectively prevented from being split downwards along the cutting line, and the penetration of electrolyte can be facilitated.
As a preferred embodiment, the aperture of the circular hole 12 is 1mm to 3mm, and may be set to 1mm, or set to 1.5mm, or set to 2mm, or set to 3mm, or the like, according to the actual use requirements. Therefore, a space for the electrolyte to permeate from the empty foil area to the active area can be effectively provided for the electrodeless ear battery, and the permeation rate of the electrolyte is accelerated.
As a preferred embodiment, the electrodeless ear cell is a lithium ion cell, a sodium ion cell, a magnesium ion cell, or a potassium ion cell.
The pole piece cutting method of the electrodeless ear battery provided by the embodiment of the utility model is suitable for the electrodeless ear battery and comprises the following steps:
s01, cutting the empty foil region 10 of the pole piece along the long side direction of the active region 20 of the pole piece and along the direction perpendicular to the long side direction of the active region 20, and cutting the empty foil region 10 of the pole piece into a plurality of cutting pieces 11; an indwelling area is arranged between two adjacent cutting blades 11 and near the end angle of one end of the active area 20;
s02, arranging a round hole 12 in each retention area in the step S01, wherein the round hole 12 is respectively connected with the active area 20 and two adjacent cutting pieces 11 to obtain pole pieces of the electrodeless ear battery.
By arranging the round holes, the point of the electrolyte penetrating from the empty foil area to the active area can be effectively provided for the electrodeless ear battery, and the penetration rate of the electrolyte is accelerated; simultaneously, the stress concentration at the tail part of the cutting line can be reduced, and the pole piece is effectively prevented from being split downwards along the cutting line.
In a preferred embodiment, in step S02,
the circular holes are tangential to the boundary line between the empty foil area and the active area.
The round holes are distributed on two adjacent cutting sheets, and the areas of the two adjacent cutting sheets are the same.
The aperture of the round hole is preferably 1 mm-3 mm.
According to the method, the round holes are formed in each retention area, so that the point positions of the electrolyte penetrating from the empty foil area to the active area can be effectively provided for the electrodeless ear battery, and the penetrating rate of the electrolyte is accelerated; simultaneously, the stress concentration at the tail part of the cutting line can be reduced, and the pole piece is effectively prevented from being split downwards along the cutting line. The liquid injection efficiency of the electrodeless ear battery can be effectively improved, the structure is simple, the process cost is low, the production efficiency is high, and the batch or large-scale production is easy.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (5)
1. The pole piece of the electrodeless ear battery is characterized by comprising an empty foil area and an active area which are adjacently arranged, wherein the empty foil area is arranged along the edge of the long side of the active area;
the empty foil area comprises a plurality of cutting sheets which are cut along the direction perpendicular to the long side of the active area along the direction of the long side of the active area; a round hole is arranged between two adjacent cutting sheets, the round hole is arranged at an end angle of the cutting sheet, which is close to one end of the active area, and the round hole is respectively connected with the active area and the two adjacent cutting sheets.
2. The pole piece of an electrodeless ear cell as recited in claim 1, wherein the circular aperture is tangential to an interface of the empty foil region and the active region.
3. The pole piece of an electrodeless ear cell as claimed in claim 2, wherein the circular holes are distributed in the same area of two adjacent cutting pieces.
4. The pole piece of an electrodeless ear cell as claimed in claim 1, wherein the aperture of the round hole is 1 mm-3 mm.
5. The pole piece of an electrodeless ear cell as claimed in claim 1, wherein the electrodeless ear cell is a lithium ion cell, a sodium ion cell, a magnesium ion cell or a potassium ion cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320246497.XU CN219286447U (en) | 2023-02-17 | 2023-02-17 | Pole piece of electrodeless ear battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320246497.XU CN219286447U (en) | 2023-02-17 | 2023-02-17 | Pole piece of electrodeless ear battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219286447U true CN219286447U (en) | 2023-06-30 |
Family
ID=86938783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320246497.XU Active CN219286447U (en) | 2023-02-17 | 2023-02-17 | Pole piece of electrodeless ear battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219286447U (en) |
-
2023
- 2023-02-17 CN CN202320246497.XU patent/CN219286447U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 3, Precision Machinery Industrial Park, No. 79 Gaodeng Road, Xishan District, Wuxi City, Jiangsu Province, 214000 Patentee after: Wuxi Pangu New Energy Co.,Ltd. Address before: 518000 507, Block C, Building 5, Hengming Bay Foreign Exchange Center, Huilongpu Community, Longcheng Street, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Pangu Naxiang New Energy Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of electrode plate for an infinite ear battery Granted publication date: 20230630 Pledgee: Bank of China Limited Liangxi Branch, Wuxi Pledgor: Wuxi Pangu New Energy Co.,Ltd. Registration number: Y2024980010788 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |