CN106684302B - The inner bending connection method of battery cap and battery core - Google Patents
The inner bending connection method of battery cap and battery core Download PDFInfo
- Publication number
- CN106684302B CN106684302B CN201611262688.6A CN201611262688A CN106684302B CN 106684302 B CN106684302 B CN 106684302B CN 201611262688 A CN201611262688 A CN 201611262688A CN 106684302 B CN106684302 B CN 106684302B
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- CN
- China
- Prior art keywords
- collector plate
- extended segment
- isolation film
- battery
- connection sheet
- 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.)
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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
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
-
- 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
Abstract
The present invention relates to the technical fields of battery, disclose the inner bending connection method of battery cap and battery core, comprising the following steps: 1), make conductive base extended segment formed separate type splintery structure；2) top of the first collector plate is extended upward, forms the first connection sheet；3), by extended segment towards lateral bending, so that extended segment is resisted against the side end of the isolation film；4), by the closely sealed connection of the first connection sheet of the second connection sheet of the second collector plate and the first collector plate；5), by the structure after the second connection sheet and the closely sealed connection of the first connection sheet, doubling is placed between battery cap and isolation film inwardly.By the way that the end of conductive base is cut off, the extended segment of conductive base forms the multi-sheet structure of separation shape, extended segment bends the side end for being resisted against isolation film, first connection sheet is connect with the second connection sheet, and doubling is placed between battery cap and isolation film the structure after connecting inwardly, the length for increasing battery core isolation film section, increases the capacity of battery.
Description
Technical field
The present invention relates to the inner bending connection methods of the technical field of battery more particularly to battery cap and battery core.
Background technique
As electronic product increasingly minimizes, portability, battery with more and more extensive, this is because battery structure is simple
Single, easy to carry, charge and discharge are easy to operation, do not influenced by outside climatic and temperature, stable and reliable for performance, so existing
Very big effect is played for the various aspects in social life.
Battery includes shell, battery cap and battery core, has the cavity of upper end opening in shell, and battery cap is sealed on
In the upper end opening of shell, in this way, then surrounding the inner cavity for forming battery between battery cap and shell, it can be put in the inner cavity
Battery core is set, certainly, the capacity of battery core is then directly related with the capacity of battery.
In order to realize the function of battery, needs for battery cap to be directly attached with battery core, under normal circumstances, pass through collection
Electric piece is attached.Battery core includes conductive base and isolation film, and conductive base is in flat-shaped ring-shaped, can be copper foil or aluminium
Foil, isolation film is wrapped in the periphery at the middle part of conductive base, and conductive base forms the extended segment for extending isolation film both ends, electricity
It is then to connect the extended segment of battery core with battery cap by tab when core needs are connect with battery cap.
In the prior art, the inner bending connection structure of battery cap and battery core is formed in shell, and due to conductive base
Extended segment in being difficult to bend, in this way, lead to the size-constrained of battery core, and the size of battery core is directly related with the capacity of battery,
The capacity of battery is caused to be difficult to increase, the capacity of battery is difficult to meet demand.
Summary of the invention
The purpose of the present invention is to provide the inner bending connection methods of battery cap and battery core, it is intended to solve in the prior art
Battery capacity is difficult to the problem of increasing and being difficult to meet demand.
The invention is realized in this way the inner bending connection method of battery cap and battery core, comprising the following steps:
1), battery core includes conductive base and isolation film, and isolation film is wrapped in the periphery at the middle part of the conductive base, and
The conductive base forms the extended segment for extending the isolation film both ends, so that the extended segment of the conductive base forms separation
The splintery structure of formula；
2), the side of the first collector plate lower part is connected to the side of the extended segment, the top of first collector plate
Extend upward, forms the first connection sheet；
3), by the extended segment towards lateral bending, so that the extended segment is resisted against the side end of the isolation film；
4), the inside of the second collector plate is connected to the lower surface of battery cap, the outside of second collector plate is outwardly
Extend and bend downward, forms the second connection sheet, second connection sheet and the first connection sheet of first collector plate are closely sealed
Connection；
5) the structure doubling inwardly after second connection sheet and the closely sealed connection of the first connection sheet, is placed in the electricity
Between pond top cover and isolation film.
Further, second collector plate and the first collector plate distinguish structure in the form of sheets.
Further, in the step 3), the extended segment towards laterally horizontal bending so that the extended segment it is closely sealed
The side end of the isolation film.
Further, in the step 3), the extended segment after bending be located at first collector plate and it is described every
From between the side end of film.
Further, in the step 3), after the bending of the extended segment, the top of first collector plate is towards institute
The side end of isolation film is stated against being formed between the top of first collector plate and the side end of the extended segment curved inwardly
The bending transition structure of folding.
Further, second connection sheet is with the middle part of the structure after the closely sealed connection of the first connection sheet described in
Squeezed between battery cap and isolation film so that the structure doubling shape after the second connection sheet and the first connection sheet are closely sealed be placed in it is described
Between battery cap and isolation film.
Further, first collector plate city doubling sheet, the lower part of first collector plate are connected to described
Positioned opposite two side of extended segment.
Compared with prior art, the inner bending connection method of battery cap provided by the invention and battery core, the present invention provide
Battery cap and battery core inner bending connection method so that conductive base extended segment formed separation shape multi-sheet structure, this
Sample then can arbitrarily and conveniently bend extended segment, pass through arrangement the second collector plate and the first collector plate, realize battery
The connection of the extended segment of top cover and conductive base is resisted against the side end of isolation film by extended segment bending, by the first collector plate
First connection sheet is connect with the second connection sheet of the second collector plate, and connect after structure doubling inwardly be placed in battery cap with every
It extends outwardly length from conductive base extended segment between film, is greatly reduced, in this way, can then increase the length of battery core isolation film section
Degree, that is, increase the capacity of battery.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram that the extended segment of battery core provided in an embodiment of the present invention is connect with the first collector plate；
Fig. 2 is that the second collector plate provided in an embodiment of the present invention is separately connected the first collector plate and the solid of battery cap is shown
It is intended to；
Fig. 3 is the enlarged diagram at the A in Fig. 2；
Fig. 4 is after the second collector plate provided in an embodiment of the present invention is separately connected the first collector plate and battery cap and bends
Stereoscopic schematic diagram；
Fig. 5 is the schematic diagram at the B in Fig. 4；
Fig. 6 is the stereoscopic schematic diagram after battery cap provided in an embodiment of the present invention is connect with battery core；
Fig. 7 be another embodiment of the present invention provides battery core the stereoscopic schematic diagram that is connect with the first collector plate of extended segment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Realization of the invention is described in detail below in conjunction with specific embodiment.
It is preferred embodiment provided by the invention shown in referring to Fig.1~Fig. 7.
The present embodiment provides the inner bending connection method of battery cap and battery core, for by battery cap 105 and battery core into
Row connection, battery core include conductive base and isolation film, and conductive base is in flat-shaped ring-shaped, can be copper foil or aluminium foil, every
Periphery from the middle part that film is wrapped in conductive base, and conductive base forms the extended segment 102 for extending isolation film both ends.
The inner bending connection method of battery cap and battery core, comprising the following steps:
1), the end of the extended segment of conductive base is cut off, so that the extended segment 102 of conductive base forms the more of separation shape
Laminated structure, in this way, the extended segment 102 of conductive base not will receive then after the end of the extended segment 102 of conductive base is removed
The limitation of end allows entire extended segment 102 towards lateral bending, extended segment 102 is bent closely sealed in isolation film
101 side end；
2), shown in referring to Fig.1, the side of 103 lower part of the first collector plate is connected on the side of extended segment 102, certainly,
It can be connect by a variety of connection types, such as towards sonic soldering；The top of first collector plate 103 extends upward, forms the first connection
Piece 104；
3), by extended segment 102 towards lateral bending, so that extended segment 102 is attached to the side end of isolation film 101；
4), referring to shown in Fig. 2-3, the second collector plate 106, second collector plate are connected in the lower surface of battery cap 105
106 inside is connect with the lower surface of battery cap 105, and the outside of the second collector plate 106 extends outwardly and bends downward, is formed
The closely sealed connection of the first connection sheet 104 of second connection sheet 107, second connection sheet 107 and the first collector plate 103；
5), referring to shown in Fig. 4~Fig. 6, by the structure court after the second connection sheet 107 and the closely sealed connection of the first connection sheet 104
Interior doubling, and doubling is placed between battery cap 105 and isolation film 101.
The battery cap of above-mentioned offer and the inner bending connection method of battery core, so that the extended segment 102 of conductive base is formed
Separate shape multi-sheet structure, in this way, then can arbitrarily and conveniently extended segment 102 is bent, by arranging the second collector plate
106 and first collector plate 103, realize that battery cap 105 is connect with the extended segment 102 of conductive base, it is curved by extended segment 102
Folding is resisted against the side end of isolation film 101, by the second of the first connection sheet 104 of the first collector plate 103 and the second collector plate 106
Connection sheet 107 connects, and the structure doubling inwardly after connection is placed between battery cap 105 and isolation film 101, is greatly reduced and is led
Electric substrate extended segment 102 extends outwardly length, in this way, can then increase by 101 sections of battery core isolation film of length, that is, increases
The capacity of battery.
In above-mentioned steps 1) in, in order to enable the extended segment 102 of conductive base forms the splintery structure of separation shape, it can be with
Before conductive base and isolation film package, then first conductive base is processed, so that the conductive base after being wrapped up
Extended segment 102 formed separation shape splintery structure；Alternatively, being also possible to after conductive base is isolated film package, then directly
Two ends of the extended segment 102 of conductive base are cut off, the extended segment 102 that electric substrate also may be implemented forms the more of separation shape
The effect of laminated structure.
In the present embodiment, the second collector plate 106 and the first collector plate 103 distinguish structure in the form of sheets, in this way, being convenient for second
The connection and arrangement of collector plate 106 and the first collector plate 103.
Alternatively, as other embodiments, referring to shown in Fig. 7,103 city doubling sheet of the first collector plate, the first collector plate 103
Lower part be connected to positioned opposite two side of extended segment 102.
In step 3), extended segment 102 is towards laterally horizontal bending, so that the closely sealed side in isolation film 101 in extended segment 102
Portion, also, bend after extended segment 102 positioned at the first collector plate 103 and the side end of isolation film 101 between, in this way, be convenient for pair
First collector plate 103 is handled；The top of first collector plate 103 is vertically bent outwardly, forms the first connection vertically bent
Piece 104.
In step 3), after extended segment 102 is bent, the top of the first collector plate 103 is towards the side end of isolation film 101
Against in this way, being formed with the bending transition knot towards inner bending between 103 top of the first collector plate and the end of extended segment 102
Structure 108 further effectively increases the length of isolation film 101 in this way, reduce 101 end of battery core isolation film to the greatest extent occupies size
Size.
In step 5), by the middle part direction electricity of the structure after the second connection sheet 107 and the closely sealed connection of the first connection sheet 104
It is squeezed between pond top cover 105 and isolation film 101, so that the structure after the second connection sheet 107 and the closely sealed connection of the first connection sheet 104
Doubling is placed between battery cap 105 and isolation film 101.
In the present embodiment, the inner bending connection structure of battery cap and battery core, including battery cap 105, are additionally provided
Two collector plates 106, the first collector plate 103 and battery core, wherein battery cap 105 is used to be sealed on the upper end opening of shell, electricity
Core is placed in the inner cavity of shell, and battery core includes conductive base and isolation film 101, wherein isolation film 101 is wrapped in conductive base
The periphery at middle part, the both ends of conductive base are extended outside the side end of isolation film 101, and extended segment 102 is formed, extended segment 102
End forms the multi-sheet structure of separation shape by excision, and extended segment 102 bends the closely sealed side end in isolation film 101.
On the closely sealed extended segment 102 in the lower part of first collector plate 103,103 top of the first collector plate extends upward, forms first
Connection sheet 104；The inside of second collector plate 106 is connected to the lower surface of battery cap 105, the external court of the second collector plate 106
Outer extension, and bend downward, the second connection sheet 107 is formed, second connection sheet 107 is closely sealed to be connected in the first connection sheet 104,
Also, the second connection sheet 107 connect with the first connection sheet 104 after structure doubling inwardly, be placed in battery cap 105 and isolation film
Between 101.
The above-mentioned inner bending connection structure for being formed in battery cap and battery core, since the extended segment 102 of conductive base is formed
Separate shape multi-sheet structure, in this way, then can arbitrarily and conveniently extended segment 102 is bent, by arranging the second collector plate
106 and first collector plate 103, realize that battery cap 105 is connect with the extended segment 102 of conductive base, the first collector plate 103
First connection sheet 104 is formed at top, and the outside of the second collector plate 106 is bent to form the second connection sheet 107 downward, by the first connection
Piece 104 and the closely sealed connection of the second connection sheet 107, the structure doubling doubling inwardly after closely sealed connection be placed on battery cap 105 with
Between isolation film 101, in this way, the structure size for forming entire 101 side of battery core isolation film is smaller, hence for fixed ruler
For very little shell, 101 size of isolation film of battery core can then be greatly increased, and then increase the capacity of battery.
In the present embodiment, the second collector plate 106 and the first collector plate 103 distinguish structure in the form of sheets, in this way, being convenient for second
The connection and arrangement of collector plate 106 and the first collector plate 103.
Extended segment 102 is towards laterally horizontal bending, so that the closely sealed side end in isolation film 101 in extended segment 102, also, it is curved
Extended segment 102 after folding is located at the inside of the first collector plate 103, in this way, convenient for handling the first collector plate 103.
The top of first collector plate 103 is towards the side end of isolation film 101 against in this way, on 103 top of the first collector plate
The bending transition structure 108 towards inner bending is formed between the end of extended segment 102, in this way, reducing battery core isolation film to the greatest extent
101 ends occupy size, further effectively increase the length dimension of isolation film 101.
In addition, the horizontal arrangement of the second collector plate 106, in this way, for the ease of the second connection sheet 107 and the first connection sheet
Connection between 104, the then perpendicular shape bending of the second connection sheet 107.
In the present embodiment, the structure of the second connection sheet 107 and the closely sealed connection of the first connection sheet 104 from middle part doubling, in this way,
It is placed between battery cap 105 and isolation film 101 convenient for doubling.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. the inner bending connection method of battery cap and battery core, which comprises the following steps:
1), battery core includes conductive base and isolation film, and isolation film is wrapped in the periphery at the middle part of the conductive base, and described
Conductive base forms the extended segment for extending the isolation film both ends, so that the extended segment of the conductive base forms separate type
Splintery structure；
2), the side of the first collector plate lower part is connected to the side of the extended segment, the top of first collector plate is upward
Extend, forms the first connection sheet；
3), by the extended segment towards lateral bending, so that the extended segment is resisted against the side end of the isolation film；After bending
The extended segment is between first collector plate and the side end of the isolation film；It is described after the extended segment bending
The top of first collector plate is towards the side end of the isolation film against on the top and the extended segment of first collector plate
Side end between formed towards inner bending bending transition structure；
4), the inside of the second collector plate is connected to the lower surface of battery cap, the outside of second collector plate extends outwardly
And bend downward, form the second connection sheet, the closely sealed connection of the first connection sheet of second connection sheet and first collector plate；
5) the structure doubling inwardly after second connection sheet and the closely sealed connection of the first connection sheet, is placed in the battery top
It is formed between lid and isolation film to folding part, it is described that folding part is arranged in detour.
2. the inner bending connection method of battery cap as described in claim 1 and battery core, which is characterized in that second current collection
Piece and the first collector plate distinguish structure in the form of sheets.
3. the inner bending connection method of battery cap as claimed in claim 1 or 2 and battery core, which is characterized in that in the step
It is rapid 3) in, the extended segment is towards laterally horizontal bending, so that the closely sealed side end in the isolation film in the extended segment.
4. the inner bending connection method of battery cap as claimed in claim 1 or 2 and battery core, which is characterized in that described second
The middle part of structure after connection sheet and the closely sealed connection of the first connection sheet is squeezed towards between the battery cap and isolation film,
So that the structure doubling shape after the second connection sheet and the first connection sheet are closely sealed is placed between the battery cap and isolation film.
5. the inner bending connection method of battery cap as claimed in claim 1 or 2 and battery core, which is characterized in that described first
Collector plate is in doubling sheet, and the lower part of first collector plate is connected to positioned opposite two side of the extended segment
Face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611262688.6A CN106684302B (en) | 2016-12-30 | 2016-12-30 | The inner bending connection method of battery cap and battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611262688.6A CN106684302B (en) | 2016-12-30 | 2016-12-30 | The inner bending connection method of battery cap and battery core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106684302A CN106684302A (en) | 2017-05-17 |
| CN106684302B true CN106684302B (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611262688.6A Active CN106684302B (en) | 2016-12-30 | 2016-12-30 | The inner bending connection method of battery cap and battery core |
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| Country | Link |
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| CN (1) | CN106684302B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106301B (en) * | 2019-04-02 | 2021-02-26 | 宁德时代新能源科技股份有限公司 | Secondary battery and battery module |
| WO2024007194A1 (en) * | 2022-07-06 | 2024-01-11 | 宁德时代新能源科技股份有限公司 | Battery cell and assembling method therefor, battery, and electrical apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024988A (en) * | 2010-11-11 | 2011-04-20 | 上海唐一新能源科技有限公司 | Coiled lithium-ion power battery core and manufacturing method thereof |
| JP2013229127A (en) * | 2012-04-24 | 2013-11-07 | Hitachi Vehicle Energy Ltd | Secondary battery |
| CN203415648U (en) * | 2013-09-12 | 2014-01-29 | 宁德新能源科技有限公司 | Cell and electrochemical energy storage device |
| CN104157824A (en) * | 2014-09-09 | 2014-11-19 | 天津中聚新能源科技有限公司 | Conduction band and battery employing same |
-
2016
- 2016-12-30 CN CN201611262688.6A patent/CN106684302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024988A (en) * | 2010-11-11 | 2011-04-20 | 上海唐一新能源科技有限公司 | Coiled lithium-ion power battery core and manufacturing method thereof |
| JP2013229127A (en) * | 2012-04-24 | 2013-11-07 | Hitachi Vehicle Energy Ltd | Secondary battery |
| CN203415648U (en) * | 2013-09-12 | 2014-01-29 | 宁德新能源科技有限公司 | Cell and electrochemical energy storage device |
| CN104157824A (en) * | 2014-09-09 | 2014-11-19 | 天津中聚新能源科技有限公司 | Conduction band and battery employing same |
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| Publication number | Publication date |
|---|---|
| CN106684302A (en) | 2017-05-17 |
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