CN110137424A - A kind of extreme ear structure and production method of battery - Google Patents
A kind of extreme ear structure and production method of battery Download PDFInfo
- Publication number
- CN110137424A CN110137424A CN201910492103.7A CN201910492103A CN110137424A CN 110137424 A CN110137424 A CN 110137424A CN 201910492103 A CN201910492103 A CN 201910492103A CN 110137424 A CN110137424 A CN 110137424A
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- China
- Prior art keywords
- exposed portion
- insertion part
- gel
- plane
- covering part
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Classifications
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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of extreme ear structures of battery, belong to battery technology field, gel including tab ontology together with two panels stick to each other, the tab ontology across and be fixed on two panels gel, the tab ontology includes exposed portion and insertion part, the width in the exposed portion is less than the width of insertion part, the exposed portion is welded to each other with insertion part, the two sides of the tab ontology of two panels gel covering are bevel structure, there is biggish welding surface between the extreme ear structure and collector, it is suitable for making the battery of smaller size smaller again, and the favorable sealing property between gel；The invention also discloses a kind of production method of the extreme ear structure of battery, which has the advantages that efficiently to produce the tab ontology of two sections of different in width using existing equipment.
Description
Technical field
The present invention relates to battery technology field more particularly to the extreme ear structures and production method of a kind of battery.
Background technique
With the development of science and technology, while people are by greatly promoting quality of the life using digital electronic goods, more
The frivolous beauty of product is pursued, therefore, the lithium battery as its energy source also develops toward the small direction of volume accounting always,
And tab, as the metallic conductor for extracting positive and negative anodes from battery core, width can also become narrow；When the width of tab
Do it is narrow after, welding surface between collector also can constriction, pole piece is easily deformed or is broken in welding process, or in finished product
In battery charge and discharge process, tab is also easily deformed or is broken in the contraction and expansion process of collector, cause collector with
Poor contact between tab, internal resistance increase.
Gel prevents from occurring between tab and aluminum plastic film as the part insulated on tab, effect when being cell package
Short circuit, and leakage is prevented together with aluminum plastic film seal bond by heating when packaged；Conventional extreme ear structure, tab ontology
Cross section with the junction of gel is rectangle, and the two sides for being equivalent to tab ontology are rectangular edge, are stained with gel
Later, gap and bubble are easy to produce between the two sides and gel of tab ontology, when encapsulation gel is with aluminum plastic film, bubble
The leakproofness of battery can directly be reduced.
How the tab ontology of producing different in width efficient and inexpensive using existing equipment, to produce volume
Smaller battery is most medium-sized and small enterprises problem of concern.
Summary of the invention
The first purpose of this invention is that provide one kind not only has biggish welding surface between collector, but also is suitable for making
Make the battery of smaller size smaller, and the extreme ear structure of the battery of the favorable sealing property between gel；
Second object of the present invention is to provide a kind of production method of the extreme ear structure of battery, efficient using existing equipment
And the tab ontology for producing two sections of different in width of low cost, to solve the problems, such as proposed in Background technology.
To achieve the goals above, the technical solution used in the present invention is as follows:
A kind of extreme ear structure of battery, the gel including tab ontology together with two panels stick to each other, the tab ontology
Across and be fixed on two panels gel, it is characterised in that: the tab ontology includes exposed portion and insertion part, described exposed
The width in portion is less than the width of insertion part, and the exposed portion is welded to each other with insertion part, the tab of two panels gel covering
The two sides of ontology are bevel structure.
Further, the width range of the insertion part be 1mm-10mm, tab ontology with a thickness of 0.05-0.3mm.
Further, the insertion part across and be fixed on two panels gel.
Further, the insertion part includes the first covering part covered by two panels gel and the first non-covering part,
The two sides of first covering part are provided with the first inclined-plane.
Further, the exposed portion and the insertion part place of being welded to each other are between two panels gel.
Further, the insertion part includes the second covering part covered by two panels gel and the second non-covering part,
The two sides of second covering part are provided with the second inclined-plane, and the second inclined-plane and insertion part and the contact surface in exposed portion are formed
Angle a is acute angle, and second covering part is provided with third inclined-plane close to the one end in exposed portion, and third inclined-plane and insertion part and
The angle b that the contact surface in exposed portion is formed is acute angle.
Further, the exposed portion includes the third covering part covered by two panels gel and the non-covering part of third,
The two sides of the third covering part are provided with the 4th inclined-plane, and the 4th inclined-plane and insertion part and the contact surface in exposed portion are formed
Angle c is acute angle, and the third covering part is provided with the 5th inclined-plane close to one end of insertion part, and the 5th inclined-plane and insertion part and
The angle d that the contact surface in exposed portion is formed is acute angle.
Further, the exposed portion across and be fixed on two panels gel.
Further, the exposed portion includes the 4th covering part and the 4th non-covering part covered by two panels gel,
The two sides of 4th covering part are provided with the 6th inclined-plane.
The present invention also provides a kind of production methods of the extreme ear structure of battery, comprising the following steps:
Step 1: calculating separately out the length of exposed portion and insertion part, the overlapping portion in exposed portion Yu insertion part weld is calculated
The length divided；
Step 2: the raw material strip in exposed portion is cut, exposed item is obtained, and the length of exposed item is made to be equal to exposed minister
Twice of degree；The raw material strip of insertion part is cut, interior filler rod is obtained, and makes the length of interior filler rod equal to the length of insertion part
Twice of degree；
Step 3: successively head and the tail both ends are alternately stacked and weld with interior filler rod by exposed item, and make the length of lap
Equal to the length of lap described in step 1, the semi-finished product band of tab ontology is obtained；
Step 4: being cut respectively from double of the middle part finished product band of exposed item and interior filler rod, tab ontology is obtained；
Step 5: by tab ontology across and be fixed on two panels gel.
The invention has the benefit that 1. by being divided into exposed portion and insertion part two parts for tab ontology, make exposed portion
Width be less than the width of insertion part, and exposed portion is welded to each other with insertion part, insertion part can be adjusted according to being actually needed
Width, make insertion part there are enough width to be welded with collector, with traditional relatively narrow tab and collector welding side
Formula is compared, not easy to break and deformation after insertion part of the invention and collector welding, and the contact surface of insertion part and collector
Product is bigger, and internal resistance is smaller, is improved the total quality of battery, by making the width in exposed portion be less than the width of insertion part,
When needing to make lesser battery, the distance between two exposed portions of positive and negative anodes can be adjusted as required, and it is wider
Two insertion parts between can generally be provided with diaphragm blocks, without worry battery will receive two insertion parts overlapping shadow
It rings, to adapt the invention to the battery of production smaller size smaller；Pass through the tab ontology that covers two panels gel
Two sides are disposed as making two panels gel just belong to the state being bonded completely when clamping tab ontology for bevel structure, carry out
The leakproofness of battery will not be influenced when heating seal operation because of there is bubble to run helter-skelter.
2. the raw material strip of exposed portion and insertion part be cut to twice of required length respectively, then successively from beginning to end
Welding forms semi-finished product band, cuts respectively to semi-finished product again, and finally upper gel, uses existing cutting and weldering
The equipment connect can rapidly and efficiently produce the tab ontology of two sections of different in width, for most of medium-sized and small enterprises, nothing
New equipment is needed to change to produce, has saved cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that gel clamps insertion part in the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of the first covering part in the embodiment of the present invention one；
Fig. 3 is the structural schematic diagram that gel clamps the first covering part in the embodiment of the present invention one；
Fig. 4 is the cross-sectional view of the first covering part in the embodiment of the present invention one；
Fig. 5 is the structural schematic diagram for being welded to each other place that gel is clipped in exposed portion and insertion part in the embodiment of the present invention two；
Fig. 6 is the partial structure diagram of the second covering part in the embodiment of the present invention two；
Fig. 7 is the partial structure diagram of third covering part in the embodiment of the present invention two；
Fig. 8 is the structural schematic diagram that gel is clipped in the second covering part and third covering part in the embodiment of the present invention two；
Fig. 9 is the side view in exposed portion and insertion part in the embodiment of the present invention two；
Figure 10 is the cross-sectional view of the second covering part and third covering part in the embodiment of the present invention two；
Figure 11 is the structural schematic diagram that gel clamps exposed portion in the embodiment of the present invention three；
Figure 12 is the structural schematic diagram of the 4th covering part in the embodiment of the present invention three；
Figure 13 is the structural schematic diagram that gel clamps the 4th covering part in the embodiment of the present invention three；
Figure 14 is the cross-sectional view of the 4th covering part in the embodiment of the present invention three；
Figure 15 is the structural schematic diagram of tab ontology of the invention；
Figure 16 is the structural schematic diagram of the semi-finished product band for the extreme ear structure completed according to production method of the invention.
Appended drawing reference are as follows:
Tab ontology 1, gel 2；
Exposed portion 3, third covering part 33, the 4th inclined-plane 331, the 5th inclined-plane 332, the non-covering part 34 of third, the 4th covering part 35,
6th inclined-plane 351, the 4th non-covering part 36；
Insertion part 4, the first covering part 41, the first inclined-plane 411, the first non-covering part 42；
Second covering part 43, the second inclined-plane 431, third inclined-plane 432, the second non-covering part 44；
Exposed item 5, interior filler rod 6.
Specific embodiment
Below in conjunction with attached drawing, invention is further explained.
Embodiment one:
A kind of extreme ear structure of battery as shown in Figure 1, the gel 2 including tab ontology 1 together with two panels stick to each other,
The thickness of tab ontology 1 is generally 0.05-0.3mm, and tab ontology 1 includes exposed portion 3 and insertion part 4, the width W1 in exposed portion 3
Less than the width W2 of insertion part 4, insertion part 4 can design wider buffering when with receiving welding according to the needs of welding
Power makes insertion part 4 be unlikely to deform and be broken, and the width range of insertion part 4 is generally 1mm-10mm, and the width in exposed portion 3 can
To determine the width in exposed portion 3, the one end in exposed portion 3 and one end part of insertion part 4 according to the size for the battery of being produced
It is overlapped and is welded to each other, welding manner can be ultrasonic bonding, laser welding, riveting, electric current stored energy welding, electric current welding or point
Its easy to operate and good advantage of welding effect is utilized for ultrasonic bonding in weldering etc., the welding manner that the present embodiment uses；It is embedded
Portion 4 is welded on the collector of battery, and the electric current for generating the active material of coating on a current collector collects, so as to
Form biggish current versus output.
Insertion part 4 across and be fixed on two panels gel 2, i.e., insertion part 4 is clipped in the middle by two panels gel 2, such as
Shown in Fig. 2, insertion part 4 includes the first covering part 41 and the first non-covering part 42 covered by two panels gel 2, the first covering
The two sides in portion 41 are provided with the first inclined-plane 411, and as shown in Figure 3 and Figure 4, gel 2 is fitted on the first inclined-plane 411, make
It is fitted closely between the two sides and gel 2 of one covering part 41, is also difficult to generate bubble, it, will not be because of in aluminum-plastic membrane used for packaging
There is bubble to run helter-skelter in gel 2 and influences the air-tightness of battery.
Embodiment two:
A kind of extreme ear structure of battery as shown in Figure 5, the gel 2 including tab ontology 1 together with two panels stick to each other,
The thickness of tab ontology 1 is generally 0.05-0.3mm, and tab ontology 1 includes exposed portion 3 and insertion part 4, the width W1 in exposed portion 3
Less than the width W2 of insertion part 4, insertion part 4 can do wider according to the needs of welding, and the width range of insertion part 4 is general
The width in exposed portion 3 can be determined according to the size for the battery of being produced for the width of 1mm-10mm, and exposed portion 3, it is exposed
The one end in portion 3 and one end of insertion part 4 partly overlap and are welded to each other, welding manner can for ultrasonic bonding, laser welding,
Riveting, electric current stored energy welding, electric current welding or spot welding etc., it is utilized for ultrasonic bonding in the welding manner that the present embodiment uses
The easy to operate and good advantage of welding effect；Insertion part 4 is welded on the collector of battery, for that will coat work on a current collector
Property the electric current that generates of substance collect, to form the output of biggish current versus.
Exposed portion 3 and 4 place of being welded to each other of insertion part are between two panels gel 2.
As shown in Figure 6 and Figure 8, insertion part 4 includes that the second covering part 43 and second covered by two panels gel 2 is not covered
Cover 44, the two sides of the second covering part 43 are provided with the second inclined-plane 431, as shown in Figure 10, the second inclined-plane 431 and insertion part 4
It is acute angle with the angle a that the contact surface in exposed portion 3 is formed, it is oblique that the second covering part 43 close to the one end in exposed portion 3 is provided with third
Face 432, as shown in figure 9, the angle b that third inclined-plane 432 and insertion part 4 and the contact surface in exposed portion 3 are formed is acute angle.
As shown in Figure 7 and Figure 8, exposed portion 3 includes not covered by third covering part 33 and third that two panels gel 2 covers
Cover 34, the two sides of third covering part 33 are provided with the 4th inclined-plane 331, as shown in Figure 10, the 4th inclined-plane 331 and insertion part 4
The angle c formed with the contact surface in exposed portion 3 is acute angle, and angle a and angle c are acute angle, and third covering part 33 is close to embedded
The one end in portion 4 is provided with the 5th inclined-plane 332, as shown in figure 9, the contact surface shape on the 5th inclined-plane 332 and insertion part 4 and exposed portion 3
At angle d be acute angle, the edge for the tab ontology 1 that two panels gel 2 is clamped is disposed as bevel structure, reduces gel
The probability that gap and bubble can be generated between 2 and tab ontology 1, improves the quality of battery.
Embodiment three:
A kind of extreme ear structure of battery as shown in figure 11, the gel including tab ontology 1 together with two panels stick to each other
2, the thickness of tab ontology 1 is generally 0.05-0.3mm, and tab ontology 1 includes exposed portion 3 and insertion part 4, the width in exposed portion 3
W1 is less than the width W2 of insertion part 4, and insertion part 4 can do wider, the width range one of insertion part 4 according to the needs of welding
As be 1mm-10mm, and the width in exposed portion 3 can determine the width in exposed portion 3 according to the size for the battery of being produced, outside
The one end in dew portion 3 and one end of insertion part 4 partly overlap and are welded to each other, and welding manner can be ultrasonic bonding, Laser Welding
It connects, rivet, electric current stored energy welding, electric current welding or spot welding etc., the welding manner that the present embodiment uses is utilized for ultrasonic bonding
Its easy to operate and good advantage of welding effect；Insertion part 4 is welded on the collector of battery, for that will coat on a current collector
The electric current that active material generates collects, to form biggish current versus output.
Exposed portion 3 across and be fixed on two panels gel 2, as shown in Figure 12 and Figure 13, two panels gel 2 is clipped in outer
Between dew portion 3；Exposed portion 3 includes the 4th covering part 35 and the 4th non-covering part 36 covered by two panels gel, and the 4th covers
The two sides of cover 35 are provided with the 6th inclined-plane 351, and as shown in figure 14, gel 2 is fitted on the 6th inclined-plane 351, make the 4th
It is fitted closely between the two sides and gel 2 of covering part 35, is also difficult to generate bubble, it, will not be because of pole in aluminum-plastic membrane used for packaging
There is bubble to run helter-skelter in ear glue 2 and influences the air-tightness of battery.
Above-described embodiment one also provides a kind of production of the extreme ear structure of battery into three any one embodiment of embodiment
Method is suitble to enterprise using the existing efficient production tab ontology 1 of production equipment batch, as shown in Figure 15 and Figure 16, the party
Method the following steps are included:
Step 1: calculating separately out the length in exposed portion 3 and insertion part 4, the weight in exposed portion 3 and 4 weld of insertion part is calculated
The length of folded part；
Step 2: the raw material strip in exposed portion 3 is cut, exposed item 5 is obtained, and it is exposed to be equal to the length of exposed item 5
Twice of 3 length of portion；The raw material strip of insertion part 4 is cut, interior filler rod 6 is obtained, and it is interior to be equal to the length of interior filler rod 6
Twice of the length in embedding portion 4；
Step 3: successively head and the tail both ends are alternately stacked and weld with interior filler rod 6 by exposed item 5, and make the length of lap
Degree is equal to the length of the lap of step 1, obtains the semi-finished product band of tab ontology 1；
Step 4: being cut respectively from double of the middle part finished product band of exposed item 5 and interior filler rod 6, tab ontology 1 is obtained；
Step 5: by tab ontology 1 across and be fixed on two panels gel 2.
In actual operation, step 5 can be mentioned coming to operate in step 4, it can first carry out the behaviour of step 5
Make, then carry out the operation of step 4, does not influence the quality of product.
The above is not intended to limit the scope of the present invention, and all technical spirits according to the present invention are to above
Any modification, equivalent variations and modification made by embodiment, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of extreme ear structure of battery, the gel (2) including tab ontology (1) and two panels stick to each other together is described
Tab ontology (1) across and be fixed on two panels gel (2), it is characterised in that: the tab ontology (1) includes exposed portion
(3) and insertion part (4), the width of the exposed portion (3) are less than the width of insertion part (4), the exposed portion (3) and insertion part
(4) it is welded to each other, the two sides of the tab ontology (1) of two panels gel (2) covering are bevel structure.
2. a kind of extreme ear structure of battery according to claim 1, it is characterised in that: the width model of the insertion part (4)
Enclose for 1mm-10mm, tab ontology (1) with a thickness of 0.05-0.3mm.
3. a kind of extreme ear structure of battery according to claim 1, it is characterised in that: the insertion part (4) passes through and consolidates
It is scheduled between two panels gel (2).
4. a kind of extreme ear structure of battery according to claim 3, it is characterised in that: the insertion part (4) includes by two
The non-covering part (42) of the first covering part (41) and first that piece gel (2) covers, the two sides of first covering part (41)
It is provided with the first inclined-plane (411).
5. a kind of extreme ear structure of battery according to claim 1, it is characterised in that: the exposed portion (3) and insertion part
(4) place of being welded to each other is located between two panels gel (2).
6. a kind of extreme ear structure of battery according to claim 5, it is characterised in that: the insertion part (4) includes by two
The non-covering part (44) of the second covering part (43) and second that piece gel (2) covers, the two sides of second covering part (43)
It is provided with the second inclined-plane (431), and the angle that the contact surface of the second inclined-plane (431) and insertion part (4) and exposed portion (3) is formed
A is acute angle, and second covering part (43) is provided with third inclined-plane (432) close to the one end of exposed portion (3), and third inclined-plane
(432) the angle b formed with the contact surface of insertion part (4) and exposed portion (3) is acute angle.
7. a kind of extreme ear structure of battery according to claim 6, it is characterised in that: the exposed portion (3) includes by two
The third covering part (33) and the non-covering part of third (34) that piece gel (2) covers, the two sides of the third covering part (33)
It is provided with the 4th inclined-plane (331), and the angle that the contact surface of the 4th inclined-plane (331) and insertion part (4) and exposed portion (3) is formed
C is acute angle, and the third covering part (33) is provided with the 5th inclined-plane (332), and the 5th inclined-plane close to the one end of insertion part (4)
(332) the angle d formed with the contact surface of insertion part (4) and exposed portion (3) is acute angle.
8. a kind of extreme ear structure of battery according to claim 1, it is characterised in that: the exposed portion (3) passes through and consolidates
It is scheduled between two panels gel (2).
9. a kind of extreme ear structure of battery according to claim 8, it is characterised in that: the exposed portion (3) includes by two
The 4th covering part (35) and the 4th non-covering part (36) that piece gel (2) covers, the two sides of the 4th covering part (35)
It is provided with the 6th inclined-plane (351).
10. a kind of production method of the extreme ear structure of battery, it is characterised in that: the following steps are included:
Step 1: calculating separately out the length of exposed portion (3) Yu insertion part (4), calculates exposed portion (3) and insertion part (4) and weld
Connect the length of the lap at place；
Step 2: the raw material strip of exposed portion (3) is cut, exposed item (5) are obtained, and make the length etc. of exposed item (5)
In twice of exposed portion (3) length；The raw material strip of insertion part (4) is cut, obtains interior filler rod (6), and make interior filler rod
(6) length is equal to twice of the length of insertion part (4)；
Step 3: successively head and the tail both ends are alternately stacked and weld with interior filler rod (6) by exposed item (5), and make lap
Length be equal to step 1 described in lap length, obtain the semi-finished product band of tab ontology (1)；
Step 4: being cut respectively from double of the middle part finished product band of exposed item (5) and interior filler rod (6), tab ontology is obtained
(1)；
Step 5: by tab ontology (1) across and be fixed on two panels gel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910492103.7A CN110137424A (en) | 2019-06-06 | 2019-06-06 | A kind of extreme ear structure and production method of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910492103.7A CN110137424A (en) | 2019-06-06 | 2019-06-06 | A kind of extreme ear structure and production method of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110137424A true CN110137424A (en) | 2019-08-16 |
Family
ID=67580688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910492103.7A Pending CN110137424A (en) | 2019-06-06 | 2019-06-06 | A kind of extreme ear structure and production method of battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599934A (en) * | 2020-12-17 | 2021-04-02 | 合肥国轩高科动力能源有限公司 | Method for assembling winding core of lithium battery |
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| CN204045664U (en) * | 2014-08-29 | 2014-12-24 | 王亚楠 | Battery pole ear |
| CN204991824U (en) * | 2015-06-19 | 2016-01-20 | 深圳市文壹科技有限公司 | Aluminium changes non - aluminium metal arc ear |
| CN207602676U (en) * | 2017-12-18 | 2018-07-10 | 惠州Tcl金能电池有限公司 | Lug, battery core and soft bag lithium ionic cell |
| CN209981352U (en) * | 2019-06-06 | 2020-01-21 | 东莞市能优能源科技有限公司 | Tab structure of battery |
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2019
- 2019-06-06 CN CN201910492103.7A patent/CN110137424A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL51488A0 (en) * | 1976-02-18 | 1977-04-29 | Union Carbide Corp | An electrochemical cell |
| CN204045664U (en) * | 2014-08-29 | 2014-12-24 | 王亚楠 | Battery pole ear |
| CN204991824U (en) * | 2015-06-19 | 2016-01-20 | 深圳市文壹科技有限公司 | Aluminium changes non - aluminium metal arc ear |
| CN207602676U (en) * | 2017-12-18 | 2018-07-10 | 惠州Tcl金能电池有限公司 | Lug, battery core and soft bag lithium ionic cell |
| CN209981352U (en) * | 2019-06-06 | 2020-01-21 | 东莞市能优能源科技有限公司 | Tab structure of battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599934A (en) * | 2020-12-17 | 2021-04-02 | 合肥国轩高科动力能源有限公司 | Method for assembling winding core of lithium battery |
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