CN220358204U - Battery core and battery - Google Patents
Battery core and battery Download PDFInfo
- Publication number
- CN220358204U CN220358204U CN202321833773.9U CN202321833773U CN220358204U CN 220358204 U CN220358204 U CN 220358204U CN 202321833773 U CN202321833773 U CN 202321833773U CN 220358204 U CN220358204 U CN 220358204U
- Authority
- CN
- China
- Prior art keywords
- battery cell
- main body
- current collector
- battery
- cell main
- 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.)
- Active
Links
- 238000005452 bending Methods 0.000 claims abstract description 24
- 210000004027 cell Anatomy 0.000 claims description 83
- 210000005056 cell body Anatomy 0.000 claims description 25
- 238000004804 winding Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 14
- 230000008595 infiltration Effects 0.000 abstract description 9
- 238000001764 infiltration Methods 0.000 abstract description 9
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a battery cell and discloses a battery with the battery cell, wherein the battery cell comprises a cylindrical battery cell main body and a current collector, and one end of the battery cell main body is provided with at least two lugs which are arranged at intervals; the current collector is arranged at one end of the battery cell main body and is provided with embedded holes which are in one-to-one correspondence with all lugs at one end of the battery cell main body; each tab passes through the corresponding embedded hole and is bent to form a bending part which is abutted with the current collector; along the circumference direction of the battery cell main body, two adjacent bending parts are arranged at intervals. So that the clearance between two adjacent bending parts forms electrolyte infiltration passageway, the follow-up electrolyte infiltration electric core of being convenient for can prolong the life of adopting the battery of above-mentioned electric core simultaneously.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cell and a battery.
Background
The existing winding type battery cell is generally formed by winding a positive plate, a negative plate and a diaphragm between the positive plate and the negative plate to form a cylinder shape, the positive plate forms a continuous all positive lug along the length direction of the positive plate, the negative plate forms a continuous all negative lug along the length direction of the negative plate, the all positive lug is positioned at one end of the winding type battery cell, the all negative lug is positioned at the other end of the winding type battery cell, and current collecting pieces electrically connected with the all positive lugs and current collecting pieces electrically connected with the all negative lugs are correspondingly arranged at two ends of the winding type battery cell.
In order to facilitate the contact electrical connection between the all positive electrode lugs or all negative electrode lugs and the current collector, in the prior art, a rubbing wheel is generally adopted to rotate and shrink and squeeze the all positive electrode lugs or all negative electrode lugs towards the center of the winding type battery cell, so that the all positive electrode lugs or all negative electrode lugs are completely pressed down towards the center direction of the winding type battery cell and are clung to the current collector. By adopting the rubbing method, the electric connection between the all positive electrode lugs or the all negative electrode lugs and the current collector can be realized, but the all positive electrode lugs or the all negative electrode lugs after rubbing can block electrolyte infiltration channels, so that the problem of insufficient electrolyte infiltration of the battery core is caused.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery cell, which is convenient for electrolyte to infiltrate the battery cell. The utility model also provides a battery with the battery cell.
According to an embodiment of the first aspect of the utility model, the battery cell comprises a battery cell main body and a current collector, wherein the battery cell main body is cylindrical, and one end of the battery cell main body is provided with at least two lugs which are arranged at intervals; the current collector is arranged at one end of the battery cell main body, provided with the electrode lugs, and provided with embedded holes which are in one-to-one correspondence with all the electrode lugs at one end of the battery cell main body; each tab passes through the corresponding embedded hole and is bent to form a bending part, and each bending part is abutted with the current collector; along the circumferential direction of the battery cell main body, two adjacent bending parts are arranged at intervals.
According to the embodiment of the first aspect of the utility model, the battery cell has at least the following beneficial effects: because the lugs at one end of the battery cell main body are arranged at intervals, the lugs are shaped and bent to form bending parts electrically connected with the current collector, and the bending parts are also arranged at intervals, so that an electrolyte infiltration channel is formed in a gap between two adjacent bending parts, and electrolyte infiltration of the battery cell is facilitated subsequently.
According to some embodiments of the utility model, all of the bending portions are bent toward the outer periphery of the cell main body.
According to some embodiments of the utility model, the bend is of unitary construction with the header.
According to some embodiments of the utility model, the bend is welded to the header.
According to some embodiments of the utility model, the current collector is provided with at least one first through hole; along the axial direction of the battery cell main body, all the bending parts are staggered with all the first through holes.
According to some embodiments of the utility model, the cell body has a central hole, and the current collector is provided with a second through hole corresponding to the central hole.
According to some embodiments of the utility model, the cell body is mainly formed by winding a positive plate, a negative plate and a spacer between the positive plate and the negative plate; all the lugs at one end of the battery cell main body and the positive plate are of an integrated structure, or all the lugs at one end of the battery cell main body and the negative plate are of an integrated structure.
According to some embodiments of the utility model, all the tabs at one end of the cell body are formed by cutting the current collector of the positive plate, or all the tabs at one end of the cell body are formed by cutting the current collector of the negative plate.
According to some embodiments of the utility model, the other end of the battery cell main body is also provided with the current collector and at least two tabs arranged at intervals, and the current collector and all the tabs at the other end of the battery cell main body are electrically connected.
A battery according to an embodiment of the second aspect of the present utility model includes a battery case in which one of the above-described electric cells is disposed.
A battery according to an embodiment of the second aspect of the present utility model has at least the following advantageous effects: by adopting the battery cell, electrolyte in the battery shell can better infiltrate the battery cell, and the service life of the battery can be prolonged.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a battery cell according to an embodiment of the present utility model;
fig. 2 is an exploded view of the assembled structure of the cell body and the current collector in the cell shown in fig. 1;
fig. 3 is a schematic diagram of an assembly structure of a cell body and a current collector in the cell shown in fig. 1;
FIG. 4 is a part view of the cell body in the cell shown in FIG. 1;
fig. 5 is a part view of the current collector in the cell shown in fig. 1.
Reference numerals: the battery cell comprises a battery cell main body 100, a central hole 101, a tab 110, a bending part 111, a current collector 200, an embedded hole 210, a first through hole 220 and a second through hole 230.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 5, a battery cell (hereinafter, sometimes simply referred to as a battery cell in the following embodiments) according to some embodiments of the first aspect of the present utility model includes a battery cell body 100 and a current collector 200, in this embodiment, the battery cell body 100 is mainly formed by winding a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet, so that the battery cell body 100 has a cylindrical shape. Because the winding of the positive electrode sheet, the negative electrode sheet and the interlayer between the positive electrode sheet and the negative electrode sheet to form the battery cell is a conventional technology in the art, the description thereof is omitted. One end of the cell body 100 has eight tabs 110 spaced apart from each other, wherein four tabs 110 are spaced apart around the circumference of the cell body 100 to form an outer ring tab, and the other four tabs 110 are spaced apart around the circumference of the cell body 100 to form an inner ring tab. Around the circumferential direction of the cell body 100, four tabs 110 located at the outer ring tabs are arranged at intervals, and four tabs 110 located at the inner ring tabs are arranged at intervals. The current collector 200 is provided with embedded holes 210 corresponding to eight tabs 110 at one end of the battery core main body 100, when the current collector 200 is mounted at one end of the battery core main body 100 with eight tabs 110, each tab 110 passes through the corresponding embedded hole 210 and is bent to form a bending part 111, each bending part 111 is abutted with the current collector 200, and two adjacent bending parts 111 are arranged at intervals along the circumferential direction of the battery core main body 100, namely, a gap exists between the two adjacent bending parts 111.
Through adopting above-mentioned structure, can enough make current collector 200 and the whole utmost point ear 110 electric connection of electric core main part 100 one end, along the circumference direction of electric core main part 100 moreover, the clearance between two adjacent bending parts 111 forms the electrolyte infiltration passageway that electrolyte flowed, and the electrolyte infiltration electric core of being convenient for subsequently.
It should be noted that, in the above embodiment, the number of the tabs 110 disposed at one end of the battery cell main body 100 is eight, and in some embodiments of the present utility model, the number of the tabs 110 disposed at one end of the battery cell main body 100 may also be two, three, four, five, six, seven, nine or more, and may be specifically determined according to practical needs, but not limited to eight.
Referring to fig. 1, 2, 3 and 5, in order to facilitate the exhaust of the battery cell, in some embodiments of the present utility model, the current collector 200 is provided with a plurality of first through holes 220 spaced apart from each other, and thus, when the current collector 200 is mounted at one end of the battery cell body 100, the tabs at the end of the battery cell body 100 pass through the insert holes 210 of the current collector 200 in a one-to-one correspondence and are bent to form bent portions 111, and at this time, along the axial direction of the battery cell body 100, all the bent portions 111 are staggered from all the first through holes 220, i.e., all the first through holes 220 are not covered by the bent portions 111 along the axial direction of the battery cell body 100. Through adopting above-mentioned structure, both be convenient for the electric core exhaust, the electrolyte of being convenient for simultaneously passes above-mentioned first through-hole 220 and gets into inside the electric core, and then is convenient for electrolyte infiltration electric core.
It should be noted that, in the above embodiment, the current collector 200 is provided with a plurality of first through holes 220 at intervals, and in some embodiments of the present utility model, the number of the first through holes 220 provided in the current collector 200 may be one, two, three or other numbers, which may be specifically determined according to actual needs.
Since the cell body 100 is formed by winding a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet, the cell body 100 has a center hole 101, and in order to facilitate the air discharge of the center hole 101 of the cell, in some embodiments of the present utility model, the current collector 200 is provided with a second through hole 230 corresponding to the center hole 101. When the current collector 200 is mounted at the end of the battery cell main body 100, the second through hole 230 of the current collector 200 is correspondingly communicated with the central hole 101 of the battery cell main body 100, so that gas inside the battery cell can be conveniently discharged through the central hole 101 and the second through hole 230, and the battery cell can be discharged more smoothly.
To avoid the bent portion 111 from covering the central hole 101, in some embodiments of the present utility model, all the bent portions 111 are bent toward the outer periphery of the cell main body 100. By adopting the structure, the bending part 111 can be effectively prevented from covering and blocking the central hole 101, and smooth exhaust of the central hole 101 can be ensured.
Further, in order to ensure the conductivity of the tab 110 and the current collector 200, in some embodiments of the present utility model, the bent portion 111 and the current collector 200 are integrally formed, and specifically, the bent portion 111 is welded to the current collector 200. When the tab 110 passes through the insertion hole 210 and is bent to form the bent portion 111 abutting against the current collector 200, the bent portion 111 and the current collector 200 can be welded together by laser welding, so as to ensure that the bent portion 111 and the current collector 200 are integrated, and further ensure that the tab 110 and the current collector 200 have good electrical conductivity.
Besides the laser welding method for welding the bending portion 111 and the current collector 200, an ultrasonic welder or a butt welder may be used to weld the bending portion 111 and the current collector 200, and the specific requirement may be determined.
Further, in order to ensure the conductivity between the tab 110 and the positive electrode sheet or the negative electrode sheet, in some embodiments of the present utility model, all the tab 110 at one end of the battery cell main body 100 is in an integral structure with the positive electrode sheet, or all the tab 110 at one end of the battery cell main body 100 is in an integral structure with the negative electrode sheet. Specifically, all the tabs 110 at one end of the battery cell main body 100 are formed by cutting at intervals the current collector of the blank area of the positive electrode sheet, or all the tabs 110 at one end of the battery cell main body 100 are formed by cutting at intervals the current collector of the blank area of the negative electrode sheet. By adopting the structure, the resistance between the tab 110 and the positive plate or the negative plate can be greatly reduced, and the conductivity between the tab 110 and the positive plate or the negative plate is ensured.
It should be noted that, in the above embodiment, the tab 110 is formed by cutting the current collector in the blank area of the positive plate or the negative plate at intervals, in some embodiments of the present utility model, the tab 110 and the positive plate or the negative plate may also be two mutually independent components, that is, the tab 110 is a separately cut part, and then the tab 110 may be welded to the positive plate or the negative plate by a laser welding machine, so that the tab 110 and the positive plate or the negative plate form an integrated structure, which may be specifically determined according to actual needs.
In order to facilitate the power supply of the battery cell to the external circuit, in some embodiments of the present utility model, the other end of the battery cell main body 100 is also provided with a current collecting piece 200 and at least two tabs 110 arranged at intervals, all the tabs 110 at the other end of the battery cell main body 100 are electrically connected with the current collecting piece 200 at the other end of the battery cell main body 100, and in this embodiment, the connection structure of the current collecting piece 200 and the tabs 110 at the other end of the battery cell main body 100 is the same as that of the above embodiment, and the description thereof will not be repeated. At this time, the current collector 200 and the tab 110 at one end of the battery cell main body 100 are respectively a positive current collector and a positive tab; the current collector 200 and the tab 110 at the other end of the battery cell main body 100 are respectively a negative current collector and a negative tab, and the battery cell can supply power to an external circuit through the positive current collector and the negative current collector.
Referring to fig. 1 to 5, a battery according to a second aspect of the present utility model includes a battery case in which one of the above-described battery cells is disposed. The battery of this embodiment through adopting foretell electric core for the inside electrolyte of battery case can infiltrate the electric core better, helps prolonging the life of battery.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The present embodiment has been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit.
Claims (10)
1. A cell, comprising:
the battery cell comprises a battery cell main body (100), wherein the battery cell main body (100) is cylindrical, and one end of the battery cell main body (100) is provided with at least two lugs (110) which are mutually arranged at intervals;
the current collecting piece (200) is arranged at one end of the battery cell main body (100) with the electrode lugs (110), and the current collecting piece (200) is provided with embedded holes (210) which are in one-to-one correspondence with all the electrode lugs (110) at one end of the battery cell main body (100);
each tab (110) passes through the corresponding embedded hole (210) and is bent to form a bending part (111), and each bending part (111) is abutted with the current collector (200);
along the circumferential direction of the battery cell main body (100), two adjacent bending parts (111) are arranged at intervals.
2. A cell according to claim 1, wherein all of the bent portions (111) are bent toward the outer periphery of the cell body (100).
3. A cell according to claim 2, wherein the bent portion (111) is of unitary construction with the current collector (200).
4. A cell according to claim 3, wherein the bent portion (111) is welded to the current collector (200).
5. A cell according to claim 1, wherein the current collector (200) is provided with at least one first through hole (220);
along the axial direction of the cell main body (100), all the bending parts (111) are staggered from all the first through holes (220).
6. A cell according to claim 1, wherein the cell body (100) has a central hole (101), and the current collector (200) is provided with a second through hole (230) corresponding to the central hole (101).
7. A cell according to claim 1, wherein the cell body (100) is formed mainly by winding a positive electrode sheet, a negative electrode sheet and a separator between the positive electrode sheet and the negative electrode sheet;
all the lugs (110) at one end of the battery cell main body (100) and the positive plate are of an integrated structure, or all the lugs (110) at one end of the battery cell main body (100) and the negative plate are of an integrated structure.
8. A battery cell according to claim 7, wherein all the tabs (110) at one end of the battery cell body (100) are formed by current collector cutting of the positive plate, or all the tabs (110) at one end of the battery cell body (100) are formed by current collector cutting of the negative plate.
9. A battery cell according to claim 1, wherein the other end of the battery cell main body (100) is also provided with the current collecting piece (200) and at least two tabs (110) arranged at intervals, and the current collecting piece (200) and all the tabs (110) at the other end of the battery cell main body (100) are electrically connected.
10. A battery comprising a battery housing having disposed therein an electrical cell according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321833773.9U CN220358204U (en) | 2023-07-12 | 2023-07-12 | Battery core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321833773.9U CN220358204U (en) | 2023-07-12 | 2023-07-12 | Battery core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220358204U true CN220358204U (en) | 2024-01-16 |
Family
ID=89504106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321833773.9U Active CN220358204U (en) | 2023-07-12 | 2023-07-12 | Battery core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220358204U (en) |
-
2023
- 2023-07-12 CN CN202321833773.9U patent/CN220358204U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114628866A (en) | High-energy-density cylindrical battery and assembly process thereof | |
| US20080081252A1 (en) | Battery pack and manufacturing method thereof | |
| CN113871763B (en) | Cylindrical battery case, cylindrical battery, and method for mounting cylindrical battery | |
| CN114204224B (en) | Battery cell | |
| CN210744083U (en) | Cylindrical lithium battery and parallel winding core thereof | |
| CN216980726U (en) | Battery cover plate assembly, battery shell and battery | |
| CN115149082A (en) | Lithium ion battery and assembling method thereof | |
| CN110957466A (en) | Battery pole piece, battery roll core and cylindrical battery | |
| CN220358204U (en) | Battery core and battery | |
| CN114628854B (en) | Cylindrical battery and method for manufacturing the same | |
| CN218472037U (en) | Cylindrical battery and electric device | |
| CN115603004B (en) | Design method of connecting sheet, energy storage equipment and electric equipment | |
| CN216793839U (en) | Battery cell structure and battery | |
| CN115663342A (en) | Ring type lithium ion battery | |
| CN211789210U (en) | Battery pack | |
| CN214706177U (en) | Pole core and battery and equipment with same | |
| CN221353094U (en) | Battery monomer, battery package and consumer | |
| CN217485558U (en) | Cylindrical battery and battery pack structure | |
| CN219144300U (en) | Battery cell | |
| CN218827470U (en) | Cylindrical battery and electric device | |
| CN221239760U (en) | Cylindrical battery and vehicle | |
| CN218456135U (en) | Space ring of cylindrical battery and cylindrical battery with same | |
| CN220474849U (en) | Current collecting disc and cylindrical battery | |
| CN214625313U (en) | Battery module, battery package and car | |
| CN220914520U (en) | Pole assembly for battery, cover plate assembly, battery and power utilization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |