CN213717029U - Utmost point ear, electric core and electric core module - Google Patents
Utmost point ear, electric core and electric core module Download PDFInfo
- Publication number
- CN213717029U CN213717029U CN202022881793.6U CN202022881793U CN213717029U CN 213717029 U CN213717029 U CN 213717029U CN 202022881793 U CN202022881793 U CN 202022881793U CN 213717029 U CN213717029 U CN 213717029U
- Authority
- CN
- China
- Prior art keywords
- tab
- section
- foil
- sections
- electric core
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model belongs to the technical field of the battery, a utmost point ear, electric core and electric core module are specifically disclosed. The tab includes a welding portion and a conductive portion. The welding part comprises a first section and two second sections, the two opposite ends of the first section are respectively connected with the second sections, the first section is connected with the two second sections to form a U-shaped positioning groove, and the conductive part is connected with the outer wall of the first section. The U-shaped positioning groove is used for accommodating a foil tab at the end part of the battery cell, and the second section of the U-shaped positioning groove is lapped and welded on the corresponding upper surface and lower surface of the foil tab. The battery cell comprises the tab. The battery cell module comprises the battery cell. The U-shaped positioning groove of the welding part realizes accurate positioning when the lug and the foil lug are welded, and welding quality is improved. Foil utmost point ear prewelding cuts the burr that the limit produced and wraps up in U type constant head tank, has avoided the burr to impale the plastic-aluminum membrane, leads to electric core to take place the short circuit.
Description
Technical Field
The utility model belongs to the technical field of the battery, especially, relate to a utmost point ear, electric core and electric core module.
Background
The conventional tab is formed by compounding a conductive metal band and tab glue. The positive electrode of the metal belt is made of aluminum, and the negative electrode of the metal belt is nickel or copper nickel-plated. The metal strap is of a plane strip structure, and foil tabs at the end part of the battery cell are welded on the metal strap in the using process. In the welding process, even if the positioning tool configured by the welding equipment is used for positioning, the positioning size deviation after welding is still too large, so that the whole battery cell is scrapped.
When the strip-shaped tab is welded with the foil tab, the tab is generally located on the upper surface or the lower surface of the foil tab, so that the upper portion and the lower portion of the aluminum-plastic film are not easy to align when the aluminum-plastic film is packaged in an up-and-down symmetrical manner, and the problems of edge dislocation, wrinkles and the like occur. Simultaneously, the cutting edge of the foil electrode lug is easy to generate burrs, and the aluminum plastic film is pierced to cause the electrode lug to generate short circuit.
Therefore, a tab, a battery cell and a battery cell module are needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a utmost point ear to solve utmost point ear poor with the welding position precision of foil electrode ear, the problem of border dislocation, fold easily appears during the plastic-aluminum membrane encapsulation, and avoid electric core to take place the short circuit.
To achieve the purpose, the technical proposal adopted by the utility model is that:
a tab, comprising:
a conductive portion;
the welding part comprises a first section and two second sections, the two opposite ends of the first section are respectively connected with the second sections, the first section and the two second sections are connected to form a U-shaped positioning groove, and the conductive part is connected with the outer wall of the first section; the U-shaped positioning groove is used for accommodating a foil electrode lug at the end part of the battery cell, and the second section of the U-shaped positioning groove is in lap joint and welded on the upper surface and the lower surface corresponding to the foil electrode lug.
Preferably, the opening size of the U-shaped positioning groove is equal to that of the foil tab.
Preferably, the first section is vertically connected to the second section, and the side surface of the first section, which is located in the U-shaped positioning groove, abuts against the end surface of the foil tab.
Preferably, the conductive portion is parallel to the second sections and is located between two of the second sections.
Preferably, the conductive portion is vertically connected to an intermediate position of the first segment.
Preferably, the first section is rounded at a location where it joins the second section.
Preferably, the conductive part comprises a metal strip and a tab adhesive bonded to the metal strip, and one end of the metal strip is connected to the first segment.
Preferably, the distance between the part of the metal strip bonded with the tab glue and the first section is 0.5 mm-3 mm.
Another object of the utility model is to provide an electricity core to solve utmost point ear poor with the welding position precision of foil electrode ear, the problem of border dislocation, fold easily appears when the plastic-aluminum membrane encapsulation, and avoid electric core to take place the short circuit.
To achieve the purpose, the technical proposal adopted by the utility model is that:
a battery cell comprises the tab.
Another object of the utility model is to provide an electricity core module to solve utmost point ear poor with the welding position precision of foil electrode ear, the problem of border dislocation, fold easily appears during the plastic-aluminum membrane encapsulation, and avoid electric core to take place the short circuit. .
To achieve the purpose, the technical proposal adopted by the utility model is that:
a battery cell module comprises the battery cell.
The utility model has the advantages that:
the utility model provides a utmost point ear, the U type constant head tank of weld part can hold foil electrode ear, and accurate location when having realized utmost point ear and foil electrode ear welding has improved welding quality. The burr that foil utmost point ear pre-welding cut limit produced wraps up in U type constant head tank, has avoided the burr to impale the plastic-aluminum membrane, leads to the problem of utmost point ear short circuit, has improved the encapsulation quality of utmost point ear. Meanwhile, the welding area of the tab and the foil tab is divided into an upper part and a lower part, so that the welding area of the tab is increased, the heat dissipation area is increased, the welding heat accumulation is avoided, and the probability of welding cracks on the surface of the foil tab is favorably reduced.
In addition, the conductive part is parallel to the second sections and is positioned between the two second sections, so that the pulling stress of the lug on the aluminum-plastic film is eliminated, the problems of edge dislocation and wrinkling during packaging of the aluminum-plastic film are avoided, and the packaging quality is improved.
The utility model provides an electricity core adopts above-mentioned utmost point ear, and accurate location when having realized utmost point ear and foil electrode ear has improved welding quality. Foil utmost point ear pre-welding cuts the burr that the limit produced and wraps up in U type constant head tank, has avoided the burr to pierce the plastic-aluminum membrane, leads to the problem of electric core short circuit, has improved the encapsulation quality of electric core.
The utility model provides an electricity core module adopts above-mentioned electric core, and accurate location when having realized utmost point ear and foil electrode ear welding has improved welding quality. Foil utmost point ear pre-welding cuts the burr that the limit produced and wraps up in U type constant head tank, has avoided the burr to pierce the plastic-aluminum membrane, leads to the problem of electric core short circuit, has improved the encapsulation quality of electric core.
Drawings
Fig. 1 is an end view of a tab and a foil tab welding assembly provided by an embodiment of the present invention;
fig. 2 is an end view of a tab according to an embodiment of the present invention.
The component names and designations in the drawings are as follows:
10. an electric core; 101. a foil tab; 1. a tab; 11. welding the part; 111. a first stage; 112. a second stage; 110. a U-shaped positioning groove; 12. a conductive portion; 121. a metal strip; 122. and (5) gluing the tab.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present embodiment discloses a tab 1, where the tab 1 is an external tab of a battery cell 10 and can be welded and connected with a foil tab 101 at an end of the battery cell 10. The tab 1 includes a welded portion 11 and a conductive portion 12. The welding portion 11 includes a first section 111 and two second sections 112, the two opposite ends of the first section 111 are respectively connected with the second sections 112, the first section 111 and the two second sections 112 are connected to form a U-shaped positioning slot 110, and the conductive portion 12 is connected with the outer wall of the first section 111. The U-shaped positioning slot 110 is used for accommodating a foil tab 101 at an end of the electrical core 10, and the second section 112 is overlapped and welded on corresponding upper and lower surfaces of the foil tab 101. The U-shaped positioning groove 110 of the welding portion 11 of this embodiment can accommodate the foil tab 101 at the end of the electric core 10, so that the accurate positioning of the tab 1 during welding with the foil tab 101 is realized, and the welding quality is improved.
The burr that the limit produced is cut in the foil utmost point ear pre-welding of electricity core 10 tip wraps up in U type constant head tank 110, has avoided the burr to impale the plastic-aluminum membrane, leads to the problem of utmost point ear 1 short circuit, has improved utmost point ear 1's encapsulation quality. Meanwhile, the welding area of the tab 1 and the foil tab 101 is divided into an upper part and a lower part, so that the welding area of the tab 1 is increased, the heat dissipation area is increased, the welding heat accumulation is avoided, and the probability of welding cracks on the surface of the foil tab 101 is favorably reduced.
The conductive part 12 is parallel to the second sections 112 and is positioned between the two second sections 112, so that the pulling stress of the tab 1 on the aluminum-plastic film is eliminated, the problems of edge dislocation and wrinkle during the packaging of the aluminum-plastic film are avoided, and the packaging quality is improved.
It should be noted that, when the tab 1 is welded to the upper and lower surfaces of the foil tab 101, the foil tab 101 is compressed, the thickness is reduced, and the two second sections 112 can be slightly deformed, so that the distance between the two second sections 112 is equal to the thickness of the compressed foil tab 101.
As shown in fig. 1, the opening of the U-shaped positioning slot 110 is equal to the thickness of the foil tab 101. Two second sections 112 are parallel to each other, and the opening size of U type constant head tank 110 is the interval between two second sections 112, and the foil utmost point ear 101 of electricity core 10 tip can be pegged graft in U type constant head tank 110, has realized utmost point ear 1 and foil utmost point ear 101's accurate location.
Preferably, the first section 111 is vertically connected to the second section 112, and the side of the first section 111 located in the U-shaped positioning slot 110 abuts against the end of the foil tab 101.
Further preferably, the conductive part 12 is vertically connected to the middle position of the first section 111, so that the conductive part 12 can be packaged in an up-and-down symmetrical manner by the aluminum-plastic film, the problems of edge dislocation and wrinkling during packaging of the aluminum-plastic film are avoided, and the packaging quality is further improved.
Preferably, the connecting position of the first section 111 and the second section 112 has a rounded corner to avoid the aluminum-plastic film piercing when the tab 11 is welded with the foil tab 101, which is beneficial to improving the welding quality.
The radius of the fillet of this embodiment is 0.3mm to 0.6 mm. For example, the radius of the rounded corners may be 0.3mm or 0.4mm or 0.5mm or 0.6 mm.
As shown in fig. 1 and 2, the conductive part 12 includes a metal strip 121 and a tab paste 122 adhered to the metal strip 121, and one end of the metal strip 121 is connected to the first segment 111.
Preferably, the distance between the portion of the metal strap 121 to which the tab glue 122 is adhered and the first section 111 is 0.5mm to 3mm, so as to prevent the tab glue 122 from being damaged when the tab 1 is processed into the U-shaped positioning slot 110, and damage to the insulating package of the metal strap 121.
The distance between the portion of the metal tape 121 to which the tab paste 122 is bonded and the first section 111 of the present embodiment may be 0.5mm or 1.5mm or 2mm or 2.5mm or 3 mm.
The present embodiment also discloses a battery cell 10 (only the foil tab 101 portion of the battery cell 10 is shown in fig. 1). The battery cell 10 includes the tab 1. The embodiment also discloses a battery cell module (not shown in the figure). The battery cell module comprises the battery cell 10. Accurate positioning when the tab 1 is welded with the foil tab 101 of the battery cell 10 is realized, and the welding quality is improved. Foil utmost point ear 101 prewelding cuts the burr that the limit produced and wraps up in U type constant head tank 110, has avoided the burr to pierce through the plastic-aluminum membrane, leads to the problem of electric core 10 short circuit, has improved the encapsulation quality of electric core 10.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A tab, comprising:
a conductive portion;
the welding part comprises a first section and two second sections, the two opposite ends of the first section are respectively connected with the second sections, the first section and the two second sections are connected to form a U-shaped positioning groove, and the conductive part is connected with the outer wall of the first section; the U-shaped positioning groove is used for accommodating a foil electrode lug at the end part of the battery cell, and the second section of the U-shaped positioning groove is in lap joint and welded on the corresponding upper surface and lower surface of the foil electrode lug.
2. The tab as claimed in claim 1, wherein the opening of the U-shaped positioning slot is equal in size to the thickness of the foil tab.
3. The tab as claimed in claim 1, wherein the first section is vertically connected to the second section, and the side surface of the first section located in the U-shaped positioning slot abuts against the end surface of the foil tab.
4. A tab as claimed in claim 1, wherein the conductive portion is parallel to the second sections and is located between two of the second sections.
5. The tab as claimed in claim 4, wherein the conductive portion is vertically connected to the middle position of the first section.
6. The tab as claimed in claim 1, wherein the locations where the first section and the second section are connected have rounded corners.
7. The tab as claimed in claim 1, wherein the conductive part comprises a metal strip and a tab adhesive bonded to the metal strip, one end of the metal strip being connected to the first segment.
8. The tab as claimed in claim 7, wherein a distance between the portion of the metal strip to which the tab compound is bonded and the first section is 0.5mm to 3 mm.
9. A battery cell, characterized by comprising the tab of any one of claims 1-8.
10. A cell module comprising the cell of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022881793.6U CN213717029U (en) | 2020-12-03 | 2020-12-03 | Utmost point ear, electric core and electric core module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022881793.6U CN213717029U (en) | 2020-12-03 | 2020-12-03 | Utmost point ear, electric core and electric core module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213717029U true CN213717029U (en) | 2021-07-16 |
Family
ID=76786325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022881793.6U Active CN213717029U (en) | 2020-12-03 | 2020-12-03 | Utmost point ear, electric core and electric core module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213717029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535796A (en) * | 2021-11-02 | 2022-05-27 | 万向一二三股份公司 | Method for welding electrode lugs on two sides of battery cell |
-
2020
- 2020-12-03 CN CN202022881793.6U patent/CN213717029U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535796A (en) * | 2021-11-02 | 2022-05-27 | 万向一二三股份公司 | Method for welding electrode lugs on two sides of battery cell |
| CN114535796B (en) * | 2021-11-02 | 2023-08-15 | 万向一二三股份公司 | Method for welding tabs on two sides of battery cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108598491B (en) | Secondary battery and pole piece thereof | |
| JP5844052B2 (en) | Multilayer battery and method for manufacturing the same | |
| EP3800718A1 (en) | Secondary battery, device, and manufacturing method for secondary battery | |
| US20200373547A1 (en) | Battery unit and manufacturing method thereof, and battery module | |
| CN213601987U (en) | Electricity core subassembly and battery | |
| CN202167546U (en) | Square flexibly packaged battery | |
| CN213304296U (en) | Multi-tab battery cell | |
| US11450932B2 (en) | Battery, preparation method thereof and electric device | |
| CN213717029U (en) | Utmost point ear, electric core and electric core module | |
| JP2006134604A (en) | Manufacturing method of power storage device | |
| WO2022154008A1 (en) | Voltage detection device and battery module | |
| CN112117499B (en) | Battery and method for manufacturing battery | |
| CN107919444B (en) | Battery, tab sheet body thereof and battery module using battery | |
| CN211929650U (en) | Soft packet of button electricity core of monopole ear | |
| CN217334339U (en) | Battery with a battery cell | |
| CN111554960A (en) | Method for manufacturing electricity storage element, bonding method, and bonded body | |
| CN108886170A (en) | Pole piece, battery core and energy storage device | |
| US10553908B2 (en) | Method of manufacturing a laminated power storage element | |
| CN216502930U (en) | Multilayer utmost point ear welded fastening device | |
| CN210744059U (en) | Tab and busbar connection structure and battery module | |
| WO2007069559A1 (en) | Capacitor | |
| CN113013494A (en) | Method for processing battery cell | |
| CN112736371A (en) | Utmost point ear and laminate polymer battery | |
| CN115189079B (en) | Method for optimizing wedge angle and shell distance of wedge-shaped end socket of flexible package power battery | |
| CN215509926U (en) | Low self-discharge lithium ion battery tab spot welding and fillet cutting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |