CN114792869A - Tab, battery and battery module - Google Patents
Tab, battery and battery module Download PDFInfo
- Publication number
- CN114792869A CN114792869A CN202210277666.6A CN202210277666A CN114792869A CN 114792869 A CN114792869 A CN 114792869A CN 202210277666 A CN202210277666 A CN 202210277666A CN 114792869 A CN114792869 A CN 114792869A
- Authority
- CN
- China
- Prior art keywords
- tab
- current collecting
- battery
- hole
- pole piece
- 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.)
- Pending
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000000084 colloidal system Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a tab, which is used for connecting a battery cell. The tab comprises a tab body and a connecting part. The utmost point ear body is the slice and extends along first direction, and the both ends of utmost point ear body along first direction are first end and second end respectively. The connecting portion is connected to the first end, and two lateral parts of the connecting portion are respectively located at two lateral parts of the tab body along the thickness direction and bent towards the second end or away from the second end. The electrode lug is provided with the two connecting parts, two side parts of the two connecting parts are bent towards the second end or away from the second end, the two side parts can be used for connecting current collectors at two ends of the battery cell, the current collectors comprise multilayer current collecting pieces, the two side parts are closer to the outer layer current collecting piece after being bent, and the outermost layer current collecting piece can be close to the two side parts without being bent, so that the outermost layer current collecting piece can be welded to the connecting parts without being bent, the fracture phenomenon of the outermost layer current collecting piece due to bending or friction is avoided, and the service life of the battery cell is prolonged.
Description
Technical Field
The invention relates to the field of lithium battery manufacturing, in particular to a tab, a battery and a battery module.
Background
As one of the most core components of new energy vehicles, lithium ions have the advantages of high energy density, long cycle life, safety, environmental protection, and the like, so that lithium batteries are becoming the mainstream direction of the electric era.
The electric core of laminate polymer battery includes pole piece pile body, two sets of mass collectors and two utmost point ears, and the pole piece pile body is piled up by two sets of pole pieces and diaphragm and is formed, generally piles up for the Z type, and the pole piece pile body after consequently piling has the multilayer pole piece, still coats the active material on the pole piece pile body for react with electrolyte, thereby charge and discharge. The two groups of current collectors comprise multilayer current collecting sheets, the two groups of current collectors are connected with two ends of the pole piece stacking body, and each layer of current collecting sheet is connected with a pole piece. The two tabs are respectively connected to the two current collectors for outputting current. However, because the single-piece tab and the multiple layers of current collecting plates need to be welded together, the tab needs to be inserted between the multiple layers of current collecting plates, then the multiple layers of current collecting plates are gathered towards the tab, and the outermost layer or the current collecting plate close to the outermost layer needs to be bent by a large radian to be welded to the tab, so that the outermost layer and the current collecting plate close to the outer layer can have a fracture phenomenon due to movement or friction in the later use or processing process.
Disclosure of Invention
The invention aims to provide a tab, a battery and a battery module, which are used for solving the problems in the prior art.
In order to solve the above problems, according to an aspect of the present invention, there is provided a tab for connecting battery cells, including:
the tab body is flaky and extends along a first direction, and two ends of the tab body along the first direction are respectively a first end and a second end;
the connecting portion, connecting portion connect in first end, just two lateral parts of connecting portion are located respectively the utmost point ear body is followed thickness direction's both sides portion and is faced the second end or is kept away from the direction of second end and buckle.
In one embodiment, the connecting portion is provided with at least one through hole, the through hole is located at the side portion of the connecting portion and near the first end of the tab body, and the through hole extends from the top of the connecting portion to the bottom.
In one embodiment, the number of the through holes is two, and the two through holes are respectively located at two side parts of the connecting part.
In one embodiment, the connecting portion is further provided with an observation hole, and the observation hole is formed in the side portion of the connecting portion and is far away from the first end of the tab body.
In one embodiment, the viewing aperture is a plurality.
In one embodiment, a tubular colloid is further arranged on the tab, and the tubular colloid is sleeved on the tab and is close to the first end.
In one embodiment, the tab is made of aluminum or copper.
The invention also relates to a battery comprising:
the battery cell comprises a pole piece stacking body and two groups of current collectors, wherein the pole piece stacking body comprises a plurality of layers of pole pieces, the current collectors comprise a plurality of layers of current collecting sheets, the two groups of current collectors are respectively positioned at two ends of the pole piece stacking body, and each layer of current collecting sheet is connected with each layer of pole piece;
the two tabs of claim 1, wherein the two tabs are respectively located at two ends of the battery cell, and the connecting portions of the two tabs are respectively connected to two sets of current collectors.
In one embodiment, the battery further includes a casing having a sealed accommodation space, the battery core and the first ends of the tab body and the connection portion are located in the accommodation space of the casing, and the second end of the tab body is located outside the casing.
The present invention also relates to a battery module, which includes:
a housing;
a plurality of the cells of claim 8 or 9. And a plurality of said batteries are located within said housing.
The tab is provided with the two connecting parts, the two side parts of the two connecting parts are bent towards the second end or away from the second end, the two side parts can be used for connecting current collectors at the two ends of the battery cell, the current collectors comprise multilayer current collecting pieces, the two side parts are closer to the outer layer current collecting piece after being bent, and the outermost layer current collecting piece can be closer to the two side parts without being bent, so that the outermost layer current collecting piece can be welded to the connecting parts without being bent, the fracture phenomenon of the outermost layer current collecting piece due to bending or friction is avoided, and the service life of the battery cell is prolonged. The invention prevents the current collecting sheet at the outer side of the current collector from being broken due to excessive bending by changing the structure of the lug, thereby enhancing the welding strength of the lug and the current collectors at the two ends of the battery cell and further avoiding reducing the overcurrent capacity of the lug.
Drawings
Fig. 1 is a tab schematic view of one embodiment of the invention.
Fig. 2 is another angle view of the tab of the embodiment shown in fig. 1.
Fig. 3 is a tab schematic view of another embodiment of the invention.
Fig. 4 is a schematic diagram of a cell and a tab of an embodiment of the invention.
Fig. 5 is an enlarged view of the area a in fig. 4.
Reference numerals: 1. a tab; 11. a tab body; 111. a first end; 112. a second end; 12. a connecting portion; 121. a side portion; 122. a through hole; 123. an observation hole; 13. a tubular colloid; 2. an electric core; 21. a current collector; 22. a pole piece stack.
Detailed Description
The objects, features and advantages of the present invention will be more clearly understood from the following detailed description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solutions of the present invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.
The invention relates to a tab 1, wherein the tab 1 is used for connecting an electric core 2. The tab 1 includes a tab body 11 and a connection portion 12 connected to each other, the tab body 11 is used for outputting current, and the connection portion 12 is used for connecting the electric core 2. The tab body 11 is sheet-shaped and extends along a first direction, and two ends of the tab body 11 along the first direction are a first end 111 and a second end 112 respectively. The connecting portion 12 is connected to the first end 111, and two side portions 121 of the connecting portion 12 are respectively located at two sides of the tab body 11 in the thickness direction and bent toward the second end 112 or away from the second end 112. The tab 1 of the invention has two connecting portions 12, and two side portions 121 of the two connecting portions 12 are bent towards the second end 112 or away from the second end 112, the two side portions 121 can be used for connecting current collectors 21 at two ends of the battery cell 2, the current collectors 21 include multilayer current collecting pieces, after the two side portions 121 are bent, the current collecting pieces are closer to the outer layer, and the outermost current collecting pieces can be closer to the two side portions 121 without bending, so that the outermost current collecting pieces can be welded to the connecting portions 12 without bending, the fracture phenomenon of the outermost current collecting pieces due to bending or friction is avoided, and the service life of the battery cell 2 is prolonged.
In the embodiment shown in fig. 1 and fig. 2, the pole piece body is rectangular and plate-shaped, the first direction is the length direction of the tab body 11, and the first end 111 and the second end 112 are two ends of the tab body 11 along the length direction, respectively, it should be understood that the tab body 11 may also be square or in other shapes, the first end 111 is one end for connecting the current collector 21 of the battery cell 2, and the first end 111 and the second end 112 may also be used interchangeably, and the shape of the pole piece body and the positions of the first end 111 and the second end 112 are not limited herein. In addition, in the embodiment of fig. 1, the connecting portion 12 is connected to the first end 111 and the two side portions 121 extend toward the second end 112 respectively, and it should be understood that in other embodiments, the two side portions 121 may both extend away from the second end 112, or one of the side portions 121 may extend toward the second end 112 and the other may extend away from the second end 112. Both the pole piece body and the connection portion 12 are electrically conductive.
Optionally, at least one through hole 122 is formed in the connection portion 12, the through hole 122 is located on the side portion 121 of the connection portion 12 and near the first end 111 of the tab body 11, and the through hole 122 extends from the top of the connection portion 12 to the bottom. Through-holes 122 may allow the multilayer current collector sheet in current collector 21 to penetrate therethrough, such that two side portions 121 and the multilayer current collector sheet overlap, facilitating welding of the multilayer current collector sheet and the two side portions 121.
Further, one, two or more through holes 122 may be provided, one through hole 122 may be provided at one side portion 121 of the connecting portion 12, the through hole 122 may allow a part of the multilayer current collecting sheet to pass through the through hole 122 and overlap with the side portion 121, the other side portion 121 may also be provided with the same through hole 122, or the through hole 122 may not be provided, and may be directly bent toward the remaining current collecting sheet and overlap with the remaining current collecting sheet. In the embodiment of fig. 1 and 2, there are two through holes 122, the two through holes 122 are respectively located at the two side portions 121 of the connecting portion 12, and the two through holes 122 are close to the first end 111 of the tab body 11, in practice, the multilayer current collecting plates may be divided into two groups, the two groups of current collecting plates respectively pass through the two through holes 122 and respectively overlap with the two side portions 121, and then the two groups of current collecting plates and the two side portions 121 are welded by welding. It should be understood that the through holes 122 may not be provided on the connecting portion 12, as shown in fig. 3, the two connecting portions 121 may divide the current collector 21 into two parts in the stacking direction of the current collecting sheets, and make the two groups of current collectors 21 gather outside the two connecting portions 121 respectively, and the current collector 21 may be welded to the connecting portions 121 as well, and the outermost part of the current collecting sheets in the current collector 21 may not be bent significantly.
Optionally, the connecting portion 12 is further provided with an observation hole 123, and the observation hole 123 is disposed at a position on the side portion 121 of the connecting portion 12 and away from the first end 111 of the tab body 11. The observation hole 123 is used for checking whether the multilayer current collecting plate penetrating into the through hole 122 reaches a preset position, so that the phenomenon of empty soldering or insufficient soldering is prevented. In practice, the two side portions 121 are provided with welding areas, and after the multilayer current collecting sheet penetrates into the through hole 122, the penetrating length of the multilayer current collecting sheet needs to be ensured so as to be overlapped with the welding areas of the two side portions 121, and thus, the phenomenon of empty welding or insufficient welding is avoided. In the embodiment of fig. 1, further, the observation hole 123 is plural. The plurality of observation holes 123 may be distributed on the two side portions 121, or may be distributed on both sides away from the tab body 11. As shown in fig. 1, the two side portions 121 are bent toward the second end 112, and each side portion 121 remote from the tab body 11 is provided with two viewing holes 123, and a current collecting plate is inserted into the two side portions 121 from the outside of the through hole 122 and overlaps the two side portions 121, and the extent to which the current collecting plate overlaps the two side portions 121 can be viewed from the viewing holes 123.
Optionally, a tubular colloid 13 is further disposed on the tab 1, and the tubular colloid 13 is sleeved on the tab 1 and is close to the first end 111. In the manufacturing process of the soft package battery, the battery cell 2 is connected with the connecting part 12 of the lug 1, and then the aluminum coating film is coated outside the battery cell 2, and then the aluminum coating film is subjected to heat sealing to form a shell with a sealed accommodating space. The second end 112 of the tab body 11 needs to output current outwards, and because the second end 112 as the output current needs to extend out of the housing, and the tab body 11 and the housing also need to be connected in a sealing manner, a tubular colloid 13 needs to be arranged on the tab body 11, and the tubular colloid 13 is melted in the process of heat sealing of the aluminum coating, so that the tab body 11 and the aluminum coating are connected in a sealing manner.
Optionally, the tab 1 is made of aluminum or copper. Two sets of current collectors 21 at two ends of the battery cell 2 are respectively used as output ends of the positive electrode and the negative electrode. Generally, the tab 1 connected to the positive electrode of the cell 2 is made of aluminum, and the tab 1 connected to the negative electrode of the cell 2 is made of copper.
The invention also relates to a battery, as shown in fig. 4 and 5, which comprises a battery core 2 and the two tabs 1. The battery cell 2 comprises a pole piece stacking body 22 and two groups of current collectors 21, the pole piece stacking body 22 comprises multiple layers of stacked pole pieces, the current collectors 21 comprise multiple layers of stacked current collecting pieces, the two groups of current collectors 21 are respectively located at two ends of the pole piece stacking body 22, and each layer of current collecting piece is connected with each layer of pole piece. The two tabs 1 are respectively located at two ends of the electric core 2, and the connecting portions 12 of the two tabs 1 are respectively connected with the two sets of current collectors 21. In addition, since the current collectors 21 at both ends of the pole piece stacked body 22 are respectively used as the positive electrode and the negative electrode output electrode of the battery cell 2, the tab 1 connecting the positive electrode is made of aluminum material, and the tab 1 connecting the negative electrode is made of steel material, but the tab 1 structure of the present invention can be used for both tab 1 structures.
Further, the battery also comprises a shell, wherein the shell is formed by heat sealing of an aluminum coating, and the shell forms a sealed accommodating space. The battery core 2 and the first end 111 of the tab body 11 and the connecting portion 12 are located in the accommodating space of the casing, and the second end 112 of the tab body 11 is located outside the casing.
The invention also relates to a battery module which comprises a shell and the plurality of batteries. And a plurality of batteries are arranged in the shell side by side, and the shell is used for protecting the batteries from being damaged.
According to the invention, the structure of the tab 1 is changed, so that the current collecting sheet on the outer side of the current collector 21 is prevented from being broken due to excessive bending, the welding strength of the tab 1 and the current collector 21 at two ends of the battery core 2 is enhanced, and the reduction of the overcurrent capacity of the tab 1 is avoided.
While the preferred embodiments of the present invention have been described in detail, it should be understood that various changes and modifications of the invention can be made by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (10)
1. The utility model provides a tab, tab is used for connecting electric core, its characterized in that includes:
the tab body is flaky and extends along a first direction, and two ends of the tab body along the first direction are respectively a first end and a second end;
the connecting part is connected to the first end, and two side parts of the connecting part are respectively located at two side parts of the tab body in the thickness direction and bend towards the second end or the direction far away from the second end.
2. A tab as claimed in claim 1, wherein the connection portion is provided with at least one through hole, the through hole is located at the side portion of the connection portion and near the first end of the tab body, and the through hole extends from the top of the connection portion to the bottom.
3. A tab as claimed in claim 2, wherein the through holes are two, and the two through holes are respectively located at two side portions of the connection portion.
4. A tab as claimed in claim 1, wherein the connection portion is further provided with a viewing hole, and the viewing hole is disposed at the side portion of the connection portion and away from the first end of the tab body.
5. A tab as claimed in claim 4, wherein the viewing hole is plural.
6. The tab as claimed in claim 1, wherein a tubular colloid is further disposed on the tab, and the tubular colloid is sleeved on the tab and is close to the first end.
7. The tab as claimed in claim 1, wherein the tab is made of aluminum or copper.
8. A battery, comprising:
the battery cell comprises a pole piece stacking body and two groups of current collectors, wherein the pole piece stacking body comprises a plurality of layers of pole pieces, the current collectors comprise a plurality of layers of current collecting sheets, the two groups of current collectors are respectively positioned at two ends of the pole piece stacking body, and each layer of current collecting sheet is connected with each layer of pole piece;
the two tabs of claim 1, wherein the two tabs are respectively located at two ends of the battery cell, and the connecting portions of the two tabs are respectively connected to the two sets of current collectors.
9. The battery of claim 8, further comprising a housing having a sealed receiving space, the cell and the first end of the tab body and the connecting portion being located within the receiving space of the housing, and the second end of the tab body being located outside the housing.
10. The utility model provides a battery module which characterized in that, battery module includes:
a housing;
a plurality of the cells of claim 8 or 9. And a plurality of said batteries are located within said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210277666.6A CN114792869A (en) | 2022-03-21 | 2022-03-21 | Tab, battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210277666.6A CN114792869A (en) | 2022-03-21 | 2022-03-21 | Tab, battery and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114792869A true CN114792869A (en) | 2022-07-26 |
Family
ID=82459439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210277666.6A Pending CN114792869A (en) | 2022-03-21 | 2022-03-21 | Tab, battery and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114792869A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458872A (en) * | 2022-11-10 | 2022-12-09 | 瑞浦兰钧能源股份有限公司 | Secondary cell's switching piece |
| WO2024109458A1 (en) * | 2022-11-24 | 2024-05-30 | 远景动力技术(江苏)有限公司 | Soft-pack cell, tab bending method for soft-pack cell, and battery pack |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204991889U (en) * | 2015-06-19 | 2016-01-20 | 深圳市今朝时代股份有限公司 | Power battery |
| KR20170020996A (en) * | 2015-08-17 | 2017-02-27 | 에스케이이노베이션 주식회사 | Secondary battery and secondary battery module including the same |
| CN108604660A (en) * | 2016-11-30 | 2018-09-28 | 株式会社Lg化学 | With double welded battery units |
| WO2019160236A1 (en) * | 2018-02-14 | 2019-08-22 | 삼성에스디아이(주) | Electrode assembly and secondary battery comprising same |
-
2022
- 2022-03-21 CN CN202210277666.6A patent/CN114792869A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204991889U (en) * | 2015-06-19 | 2016-01-20 | 深圳市今朝时代股份有限公司 | Power battery |
| KR20170020996A (en) * | 2015-08-17 | 2017-02-27 | 에스케이이노베이션 주식회사 | Secondary battery and secondary battery module including the same |
| CN108604660A (en) * | 2016-11-30 | 2018-09-28 | 株式会社Lg化学 | With double welded battery units |
| WO2019160236A1 (en) * | 2018-02-14 | 2019-08-22 | 삼성에스디아이(주) | Electrode assembly and secondary battery comprising same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458872A (en) * | 2022-11-10 | 2022-12-09 | 瑞浦兰钧能源股份有限公司 | Secondary cell's switching piece |
| WO2024109458A1 (en) * | 2022-11-24 | 2024-05-30 | 远景动力技术(江苏)有限公司 | Soft-pack cell, tab bending method for soft-pack cell, and battery pack |
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