CN218996816U - Coiled cell and battery cell - Google Patents
Coiled cell and battery cell Download PDFInfo
- Publication number
- CN218996816U CN218996816U CN202223434160.6U CN202223434160U CN218996816U CN 218996816 U CN218996816 U CN 218996816U CN 202223434160 U CN202223434160 U CN 202223434160U CN 218996816 U CN218996816 U CN 218996816U
- Authority
- CN
- China
- Prior art keywords
- diversion
- layer
- winding structure
- winding
- electrode plate
- 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
Images
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
- Secondary Cells (AREA)
Abstract
The utility model relates to a winding cell and a battery cell, wherein the winding cell comprises: the diaphragm layer is provided with at least one first diversion hole; the positive electrode plate layer and the negative electrode plate layer are separated by the diaphragm, and at least one second diversion hole is formed in the positive electrode plate layer and/or the negative electrode plate layer; when the diaphragm layer, the positive electrode plate layer and the negative electrode plate layer are wound along the winding direction to form a winding structure, the first diversion hole and the second diversion hole are formed with diversion channels at the bending positions of the winding structure, and the diversion channels allow electrolyte to flow from the outside of the winding structure to the inside of the winding structure. The utility model improves the battery infiltration effect and solves the problems of pole piece breakage and wrinkling.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a winding electric core and a battery cell.
Background
The battery cell comprises a positive pole piece, a negative pole piece, electrolyte and a separation film. The electrolyte is an ion conductor which plays a role in conduction between the anode and the cathode of the battery, lithium ions are transmitted back and forth between the anode and the cathode in the charging and discharging process, and the battery monomer mainly depends on metal ions to move between the anode plate and the cathode plate for working.
The positive pole piece comprises a positive pole current collector and a positive pole active material layer, the positive pole active material layer is coated on the surface of the positive pole current collector, the part of the positive pole current collector, which is not coated with the positive pole active material, is connected with the positive pole lug, the negative pole piece comprises a negative pole current collector and a negative pole active material layer, the negative pole active material layer is coated on the surface of the negative pole current collector, and the part of the negative pole current collector, which is not coated with the negative pole active material, is connected with the negative pole lug. The positive pole piece, the negative pole piece and the isolating film are wound or laminated to form a battery cell, and the battery cell is electrically connected with an external circuit by connecting the positive pole lug and the negative pole lug so as to realize charge and discharge.
The electrolyte is used for infiltrating the pole piece, and relates to solid, liquid and gas three-phase contact contents. When the electrolyte is injected into the battery case, the electrolyte is first discharged from the air in the case, then the electrolyte adheres to the surfaces of the active materials of the positive and negative electrodes, and some electrolyte enters between the positive electrode and the negative electrode through the separator of the winding core. The electrolyte infiltrates the pole piece and the electrolyte in the diaphragm reversely infiltrates the pole piece along with the time, and when the standing time is long to a certain extent, the infiltration of the pole piece reaches a balanced state under the action of the surface tension.
However, in the actual operation process, the infiltration effect of the electrolyte on the pole piece cannot be grasped, and particularly for a coiled battery, too little infiltration of the electrolyte at the bending part of the coiled battery can lead to lithium precipitation, reduce the battery performance and affect the rate performance, the discharge capacity and the service life of the lithium battery.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model discloses a winding electric core and a battery cell.
The technical scheme adopted by the utility model is as follows:
a wound cell comprising:
the diaphragm layer is provided with at least one first diversion hole;
the positive electrode plate layer and the negative electrode plate layer are separated by the diaphragm layer, and at least one second diversion hole is formed in the positive electrode plate layer and/or the negative electrode plate layer;
when the separator layer, the positive electrode plate layer and the negative electrode plate layer are wound along the winding direction to form a winding structure, the first diversion hole and the second diversion hole are formed with diversion channels at the bending positions of the winding structure, and the diversion channels allow electrolyte to flow from the outside of the winding structure to the inside of the winding structure.
The method is further technically characterized in that: the first diversion hole is on the same straight line along the central line of the axle center of the winding structure and the second diversion hole is on the same straight line along the central line of the axle center of the winding structure.
The method is further technically characterized in that: the first diversion holes and the adjacent second diversion holes are arranged in a staggered manner along the radial direction of the winding structure, wherein the second diversion holes are arranged in the empty foil area of the positive pole piece layer and/or the empty foil area of the negative pole piece layer.
The method is further technically characterized in that: the hollow foil areas which are arranged in a stacked manner form diversion channels along the radial direction of the winding structures, and each winding structure comprises at least two diversion channels.
The method is further technically characterized in that: the diversion channel extends into the axle center of the winding structure or is a preset distance away from the axle center.
The method is further technically characterized in that: the number of the second diversion holes on the outer layer of the winding structure is larger than that of the second diversion holes on the inner layer of the winding structure, and the width of the empty foil area is reduced along with the reduction of the number of the second diversion holes.
The method is further technically characterized in that: the aperture of the first diversion hole is smaller than that of the second diversion hole.
The method is further technically characterized in that: the aperture of the first diversion hole and/or the aperture of the second diversion hole gradually decreases from the outer side to the inner side of the winding structure.
The method is further technically characterized in that: the second diversion holes are arranged in the positive electrode plate layer and/or the negative electrode plate layer in an array; the shape of the first diversion holes and the second diversion holes is one or more of round, polygonal and elliptical.
A battery cell comprising a housing and the winding core; the winding cell is housed within the housing.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
1. according to the winding battery core, the diversion holes are arranged at the bending positions of the winding structure, so that the infiltration effect of electrolyte is improved.
2. According to the winding battery core, the guide holes are arranged at the bending positions of the winding structure, so that the state of the pole piece at the bending positions is improved, the problem that the pole piece is easy to fold and break at the turning positions is solved, and the winding difficulty of the winding structure is reduced.
3. The battery monomer is applied to the winding battery core with the effect of improving the wetting effect of the electrolyte, improves the multiplying power performance and the discharge capacity of the battery, and prolongs the service life of the battery.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
Fig. 1 is a schematic diagram of a first embodiment of a wound cell in accordance with the present utility model.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is a schematic diagram of a second embodiment of a wound cell in accordance with the present utility model.
Fig. 4 is an enlarged schematic view at B in fig. 3.
Fig. 5 is a schematic diagram of a third embodiment of a wound cell in accordance with the present utility model.
Fig. 6 is an enlarged schematic view at C in fig. 5.
Fig. 7 is a schematic diagram of a fourth embodiment of a wound cell in accordance with the present utility model.
Fig. 8 is a schematic diagram of a fifth embodiment of a wound cell in accordance with the present utility model.
Description of the specification reference numerals: 1. a separator layer; 2. a positive electrode sheet layer; 3. a negative pole piece layer; 41. a first deflector aperture; 42. a second deflector aperture; 5. an empty foil region; 6. and a coating area.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, read in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments are, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for the purpose of illustration and is not intended to be limiting of the utility model, and furthermore, like reference numerals refer to like elements throughout the embodiments.
Example 1:
referring to fig. 1 and 2, a wound cell, comprising:
the diaphragm layer 1 is provided with at least one first diversion hole 41;
the positive electrode plate layer 2 and the negative electrode plate layer 3 which are isolated by the diaphragm layer 1 are provided with at least one second diversion hole 42;
when the separator layer 1, the positive electrode sheet layer 2 and the negative electrode sheet layer 3 are wound in the winding direction to form a winding structure, the first diversion holes 41 and the second diversion holes 42 are formed with diversion channels at the bending positions of the winding structure, and the diversion channels allow electrolyte to flow from the outside of the winding structure to the inside of the winding structure.
The application is applied to a winding type battery, which is formed by winding a diaphragm layer 1, a positive electrode plate layer 2 and a negative electrode plate layer 3, and comprises a winding structure arranged at two ends and a lamination structure connected with the two winding structures.
The above-mentioned winding battery core that provides solves the little electrolyte infiltration of the department of bending of current winding battery and can lead to separating lithium, reduces battery performance, influences the problem of the multiplying power performance, discharge capacity and the life of lithium cell, through set up first water conservancy diversion hole 41 and second water conservancy diversion hole 42 at diaphragm layer, pole piece layer, can let more electrolyte fully get into inside the winding structure, fully infiltrate positive pole piece layer 2 and negative pole piece layer 3.
In this embodiment, the separator layer 1 refers to a separator material disposed between the positive electrode sheet layer 2 and the negative electrode sheet layer 3, and has the main functions of: the positive electrode plate layer 2 and the negative electrode plate layer 3 are isolated, electrons in the battery cannot pass through freely, and ions in the electrolyte can pass through freely between the positive electrode plate layer 2 and the negative electrode plate layer 3. The material of the separator layer 1 may be PP (polypropylene) or PE (polyethylene).
In this embodiment, when the winding cell includes the separator layer 1, the positive electrode sheet layer 2, the separator layer 1, and the negative electrode sheet layer 3 may be stacked together, and then the whole may be wound in the winding direction to form a winding structure. The positive electrode plate layer 2 is coated with positive electrode active substances on the front and back sides of the positive electrode plate layer, the negative electrode plate layer 3 is coated with negative electrode active substances on the front and back sides of the positive electrode plate layer, and the separator layer 1 is arranged between the positive electrode plate layer 2 and the negative electrode plate layer 3 so as to realize chemical reaction between the positive electrode plate layer 2 and the negative electrode plate layer 3.
In the present embodiment, the center line of the first deflector hole 41 along the axis of the winding structure and the center line of the second deflector hole 42 along the axis of the winding structure are on the same line, as shown in fig. 1. The center lines of the diversion holes are on the same straight line, so that the diversion channel can realize a straight line channel, and the infiltration effect is improved. Further, the first diversion holes 41 and the second diversion holes 42 are arranged on each diaphragm layer 1, the positive pole piece layer 2 and the negative pole piece layer 3 of the winding structure, so that a linear channel extending from outside to inside can be formed on the winding structure, the infiltration speed of electrolyte can be improved, the electrolyte can smoothly enter the innermost part of the winding structure, and the full infiltration of the inside is realized.
In the present embodiment, the aperture of the first deflector hole 41 is smaller than that of the second deflector hole 42, avoiding penetration of the active material. If the first diversion holes are too large, active substances on the positive electrode pole piece layer 2 and the negative electrode pole piece layer 3 easily pass through the first diversion holes and enter the adjacent pole piece layers isolated by the diaphragm layer 1, so that the problem of positive and negative electrode short circuits is caused, and the aperture of the first diversion holes 41 is reduced, so that the overall safety of the battery is improved.
In the present embodiment, the aperture of the first deflector hole 41 and/or the aperture of the second deflector hole 42 gradually decreases from the outside to the inside of the winding structure. Specifically, since the winding structure is formed by winding, the length of the pole piece layer at the outer side is relatively longer, the length of the pole piece layer is reduced along with the reduction of the radius, the aperture of the first diversion hole 41 is gradually reduced from the outer side to the inner side of the winding structure, the aperture of the second diversion hole 42 is gradually reduced from the outer side to the inner side of the winding structure, the aperture of the diversion hole is reduced along with the reduction of the radius of the pole piece layer where the diversion hole is positioned, the open pores of the pole piece layer and the diaphragm layer at the inner side can be correspondingly reduced, and the situation that the pole piece layer is broken and active substances are reduced due to excessive open pores is avoided, so that the energy density is reduced.
Example 2:
referring to fig. 3 and 4, according to embodiment 1, the first diversion holes 41 and the adjacent second diversion holes 42 are arranged in a staggered manner along the radial direction of the winding structure, and the staggered arrangement can improve the infiltration effect of the electrolyte, so that the electrolyte infiltrates to two sides along the direction of the pole piece layer. The staggered arrangement can slow down the flowing speed of the electrolyte in the diversion channel, and the electrolyte can fully stay in the diversion channel to infiltrate the pole piece layer. The second diversion hole adjacent to the first diversion hole 41 refers to a second diversion hole on the positive electrode pole piece layer 2 or the negative electrode pole piece layer 3 adjacent to the membrane layer where the first diversion hole is located on the winding structure. The adjacent first diversion holes 41 and second diversion holes 42 are arranged in a staggered manner, so that an S-shaped diversion channel or a broken line diversion channel is formed, the S-shaped diversion channel is arranged in a staggered manner for diversion Kong Laihui, the broken line diversion channel is arranged in a staggered manner in the same direction for diversion holes, the staggered manner is not limited to the arrangement, and the length of the circulation channel of the electrolyte can be prolonged, so that the infiltration effect of the electrolyte can be improved.
It should be noted that, the arrangement of the first diversion holes 41 and the second diversion holes 42 is not limited to this, the same diversion channel can be simultaneously provided with a linear arrangement and a staggered arrangement, the outside of the winding structure forms a linear arrangement, the inside of the winding structure realizes a staggered arrangement, and the infiltration speed and the infiltration sufficiency can be simultaneously considered, thereby improving the overall infiltration effect. Of course, the present application is not limited thereto, and the arrangement of the first and second deflector holes 41 and 42 may be freely designed as long as the infiltration effect can be improved.
Example 3:
referring to fig. 5 and 6, based on example 1, the positive electrode tab layer 2 and the negative electrode tab layer 3 are each provided with a blank foil region 5 and a coating region 6, the coating region 6 being a region where an active material is coated, and the blank foil region 5 being a blank region reserved when the active material is coated. By reserving the empty foil area 5, the processing of the diversion holes is facilitated, active substances near the diversion holes are prevented from entering the adjacent pole piece layer through the diaphragm layer 1, and the risk of short circuit is reduced.
The first diversion holes 41 and the adjacent second diversion holes 42 are arranged in a staggered manner along the radial direction of the winding structure, wherein the second diversion holes 42 are arranged in the empty foil area 5 of the positive electrode pole piece layer 2 and/or the empty foil area 5 of the negative electrode pole piece layer 3. The staggered arrangement can improve the infiltration effect of the electrolyte, so that the electrolyte infiltrates to two sides along the direction of the electrode sheet layer, but active substances on the coating area 6 of the positive electrode sheet layer 2/the coating area 6 of the negative electrode sheet layer 3 can enter the negative electrode sheet layer 2/the positive electrode sheet layer 3 through the first diversion holes 41, so that an empty foil area 5, namely an area without the active substances, needs to be arranged around the second diversion holes 42.
In this embodiment, the hollow foil sections 5 are arranged in a stacked manner to form flow guiding channels in the radial direction of the winding structures, each winding structure comprising at least two flow guiding channels, as shown with reference to fig. 5. The number of the diversion channels is not limited to this, and may be set as needed. Further, the diversion channels can be uniformly arranged on the winding structure, or the diversion channels can be densely-to-sparsely-arranged from the center to the two sides on the winding structure, and the winding degree is smaller than that of the central part due to the fact that the two sides of the winding structure are connected with the lamination structure, so that more diversion channels are arranged on the central part, and the infiltration degree of the central part is improved. It should be noted that, the winding cell of the present application includes a winding structure disposed at two ends and a lamination structure connecting the two winding structures, so as to form a flat elliptic cylindrical structure, wherein the lamination structure is shown as a flat section in fig. 1.
In this embodiment, the guide channel extends into the axis of the winding structure or is a predetermined distance from the axis. Specifically, the second diversion holes 42 are not formed in the innermost pole piece layers, so that pole piece breakage caused by the fact that the second diversion holes 42 are formed due to too small curvature is avoided. Or when a plurality of diversion channels are formed, part of the diversion channels extend into the shaft center of the winding structure, part of the diversion channels extend into the winding structure to be a preset distance away from the shaft center, namely, part of the diversion channels extend into the innermost side, and part of the diversion channels do not extend into the innermost side, so that the risk of breaking the pole piece layer is reduced.
In the present embodiment, the number of the second deflector holes 42 located at the outer layer of the winding structure is larger than the number of the second deflector holes 42 located at the inner layer of the winding structure, and the width of the empty foil region 5 decreases as the number of the second deflector holes decreases. The number of second diversion holes 42 on the pole piece layer of the outer layer of the winding structure is larger than the number of second diversion holes 42 on the pole piece layer of the inner layer of the winding structure, so that more electrolyte can enter the diversion channel. Further, the number of the second diversion holes 42 may gradually decrease from outside to inside along the radial direction of the winding structure, or may gradually decrease from outside to inside along the radial direction of the winding structure, i.e. a plurality of outer pole piece layers are provided with a plurality of second diversion holes, a plurality of middle layers are provided with b plurality of second diversion holes, and a plurality of inner layers are provided with c plurality of second diversion holes, a > b > c. The number of the diversion holes is not limited as long as the infiltration of the electrolyte can be promoted.
Example 4:
as shown in fig. 7, based on embodiment 1, the second deflector holes 42 are arranged in an array in the positive electrode tab layer 2 and/or the negative electrode tab layer 3. Specifically, the first and second guide holes 41 and 42 are circular in shape. Further, an empty foil region 5 is provided at the circumferential side of the circular second deflector hole 42 to prevent the active material from penetrating the separator layer.
Example 5:
as shown in fig. 8, based on embodiment 1, the second deflector holes 42 are arranged in an array in the positive electrode tab layer 2 and/or the negative electrode tab layer 3. Specifically, the first and second guide holes 41 and 42 are rectangular in shape. Further, the first and second deflector holes 41 and 42 are provided in the hollow foil region 5, such as rectangular portions in the drawing, to prevent the active material from penetrating the separator layer.
From examples 4 and 5, it can be seen that: the shapes of the first and second guide holes 41 and 42 may be the same or different, and the shapes of the first and second guide holes 41 and 42 may be one or more of circular, polygonal, and elliptical as long as the conduction of the electrolyte can be achieved. The shape of the hollow foil region 5 may be the same or different, as long as it can surround or partially surround the first or second flow guiding holes 41, 42. Tabs (not shown) may be provided thereon in a protruding manner to transmit the power of the positive and negative electrodes to an external circuit.
Example 6:
a battery cell comprising a housing and a wound cell as provided in any one of embodiments 1-5; the winding battery cell is accommodated in the shell.
The battery monomer is provided, and the winding battery core with the effect of improving the wetting effect of the electrolyte is applied, so that the rate performance and the discharge capacity of the battery are improved, and the service life of the battery is prolonged.
In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A coiled electrical core, characterized by: comprising the following steps:
the diaphragm layer is provided with at least one first diversion hole;
the positive electrode plate layer and the negative electrode plate layer are separated by the diaphragm layer, and at least one second diversion hole is formed in the positive electrode plate layer and/or the negative electrode plate layer;
when the separator layer, the positive electrode plate layer and the negative electrode plate layer are wound along the winding direction to form a winding structure, the first diversion hole and the second diversion hole are formed with diversion channels at the bending positions of the winding structure, and the diversion channels allow electrolyte to flow from the outside of the winding structure to the inside of the winding structure.
2. The wound cell of claim 1, wherein: the first diversion hole is on the same straight line along the central line of the axle center of the winding structure and the second diversion hole is on the same straight line along the central line of the axle center of the winding structure.
3. The wound cell of claim 1, wherein: the first diversion holes and the adjacent second diversion holes are arranged in a staggered manner along the radial direction of the winding structure, wherein the second diversion holes are arranged in the empty foil area of the positive pole piece layer and/or the empty foil area of the negative pole piece layer.
4. A coiled electrical cell according to claim 3, wherein: the hollow foil areas which are arranged in a stacked manner form diversion channels along the radial direction of the winding structures, and each winding structure comprises at least two diversion channels.
5. A coiled electrical cell according to claim 3, wherein: the diversion channel extends into the axle center of the winding structure or is a preset distance away from the axle center.
6. A coiled electrical cell according to claim 3, wherein: the number of the second diversion holes on the outer layer of the winding structure is larger than that of the second diversion holes on the inner layer of the winding structure, and the width of the empty foil area is reduced along with the reduction of the number of the second diversion holes.
7. The wound cell of claim 1, wherein: the aperture of the first diversion hole is smaller than that of the second diversion hole.
8. The wound cell of claim 1, wherein: the aperture of the first diversion hole and/or the aperture of the second diversion hole gradually decreases from the outer side to the inner side of the winding structure.
9. The wound cell of claim 1, wherein: the second diversion holes are arranged in the positive electrode plate layer and/or the negative electrode plate layer in an array; the shape of the first diversion holes and the second diversion holes is one or more of round, polygonal and elliptical.
10. A battery cell, characterized in that: comprising a housing and a winding cell according to any of claims 1-9; the winding cell is housed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223434160.6U CN218996816U (en) | 2022-12-21 | 2022-12-21 | Coiled cell and battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223434160.6U CN218996816U (en) | 2022-12-21 | 2022-12-21 | Coiled cell and battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218996816U true CN218996816U (en) | 2023-05-09 |
Family
ID=86218301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223434160.6U Active CN218996816U (en) | 2022-12-21 | 2022-12-21 | Coiled cell and battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218996816U (en) |
-
2022
- 2022-12-21 CN CN202223434160.6U patent/CN218996816U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101147207B1 (en) | Electrode assembly, and rechargeable battery using thereof | |
| KR101310734B1 (en) | Electrode assembly and secondary battery using the same | |
| KR100786875B1 (en) | Battery module | |
| KR102141240B1 (en) | Electrode assembly and secondary battery comprising the same | |
| CN103155226A (en) | Integral battery tab | |
| EP2597704A2 (en) | Secondary battery having a differential lead structure | |
| KR100515832B1 (en) | Electrode assembly of secondary battery | |
| US20200287196A1 (en) | Electrode Assembly and Method for Manufacturing the Same | |
| KR101084079B1 (en) | Rechargeable battery and electrode assembly used thereof | |
| US20210104794A1 (en) | Lithium-air battery package | |
| KR20080037867A (en) | Electrode assembly and lithium rechargeable battery using the same and method of making lithium rechargeable battery | |
| CN218996816U (en) | Coiled cell and battery cell | |
| KR100599713B1 (en) | Secondary battery and electrodes assembly | |
| KR101515672B1 (en) | Electrode assembly including anode and cathod electrode more than 2 and electrochemical device using the same | |
| WO2023280103A1 (en) | Lithium ion battery | |
| CN116404269A (en) | Battery cell, battery and electric equipment | |
| US7166387B2 (en) | Thin battery with an electrode having a higher strength base portion than a tip portion | |
| CN215771249U (en) | Lithium ion battery and vehicle comprising same | |
| KR20070025687A (en) | Lithium rechargeable battery | |
| CN220604733U (en) | Battery cell and battery | |
| CN219066904U (en) | Battery cell and battery capable of preventing lithium from being separated from negative electrode tab | |
| CN219203444U (en) | Pole piece, electrode assembly, battery monomer, battery module and electric equipment | |
| CN220291024U (en) | Pole piece structure and cylindrical battery | |
| CN219321380U (en) | Multipolar ear pole piece, battery cell and cylindrical battery | |
| CN221009011U (en) | Battery cell and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |