CN106684302A - Inward-bending connecting method of battery top cap and battery cell - Google Patents
Inward-bending connecting method of battery top cap and battery cell Download PDFInfo
- Publication number
- CN106684302A CN106684302A CN201611262688.6A CN201611262688A CN106684302A CN 106684302 A CN106684302 A CN 106684302A CN 201611262688 A CN201611262688 A CN 201611262688A CN 106684302 A CN106684302 A CN 106684302A
- Authority
- CN
- China
- Prior art keywords
- collector plate
- extension
- battery
- isolating membrane
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of batteries, and discloses an inward-bending connecting method of a battery top cap and a battery cell. The inward-bending connecting method of the battery top cap and the battery cell comprises the following steps of (1) enabling an extending section of a conductive base material to form a separating type splintery structure; (2) enabling the upper part of a first collector plate to upwards extend so as to form a first connecting sheet; (3) bending the extending section to a side direction so as to enable the extending section to press against the side end part of an isolating membrane; (4) tightly connecting a second connecting sheet of a second collector plate and the first connecting sheet of the first collector plate; (5) inwards double-folding a structure formed by tightly connecting the second connecting sheet and the first connecting sheet to be between the battery top cap and the isolating membrane. The end head of the conductive base material is cut off, the extending section of the conductive base material forms the separating type splintery structure, the extending section is bent to press against the side end part of the isolating membrane, the first connecting sheet and the second connecting sheet are connected, and the connected structure is inwards double-folded to be between the battery top cap and the isolating membrane, so that the length of a battery cell isolating membrane section is increased, and the battery capacity is increased.
Description
Technical field
The present invention relates to the technical field of battery, more particularly to the inner bending method of attachment of battery cap and battery core.
Background technology
With electronic product increasingly miniaturization, portability, the utilization of battery is more and more extensive, this is because battery structure is simple
Single, easy to carry, discharge and recharge is easy to operation, is not affected 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 housing, battery cap and battery core, and the cavity with upper end open in housing, battery cap is sealed on
In the upper end open of housing, so, the inner chamber for forming battery is then surrounded between battery cap and housing, can be put in the inner chamber
Battery core is put, certainly, the capacity of battery core is then directly related with the capacity of battery.
In order to realize the function of battery, need directly to be attached battery cap with battery core, generally, by collection
Electric piece is attached.Battery core includes conductive base and isolating membrane, and conductive base is in flat-shaped ring-shaped, can be Copper Foil or aluminum
Paper tinsel, isolating membrane is wrapped in the periphery at the middle part of conductive base, and conductive base forms the extension for extending isolating membrane two ends, electricity
Then it is to be connected the extension of battery core with battery cap by lug when core needs to be connected with battery cap.
In prior art, battery cap is formed in housing with the inner bending attachment structure of battery core, and due to conductive base
Extension in being difficult to bend, so, cause the size-constrained of battery core, and the size of battery core is directly related with the capacity of battery,
The capacity for causing battery is difficult to increase, and the capacity of battery is difficult to meet demand.
The content of the invention
It is an object of the invention to provide the inner bending method of attachment of battery cap and battery core, it is intended in solving prior art
Battery capacity is difficult to increase and be difficult to the problem for meeting demand.
The present invention is achieved in that the inner bending method of attachment of battery cap and battery core, comprises the following steps：
1), battery core includes conductive base and isolating membrane, and isolating membrane is wrapped in the periphery at the middle part of the conductive base, and
The conductive base forms the extension for extending the isolating membrane two ends so that the extension of the conductive base forms and separates
The splintery structure of formula；
2), the side of the first collector plate bottom is connected to the side of the extension, the top of first collector plate
Extend upward, form the first connection sheet；
3), by the extension towards lateral bending so that the extension is resisted against the side end of the isolating membrane；
4), the inside of the second collector plate be connected to the lower surface of battery cap, the outside of second collector plate is outwardly
Extend and bend down, form the second connection sheet, second connection sheet is closely sealed with the first connection sheet of first collector plate
Connection；
5), second connection sheet is placed in into the electricity with the structure doubling inwardly after the closely sealed connection of first connection sheet
Between pond top cover and isolating membrane.
Further, second collector plate and the first collector plate distinguish structure in the form of sheets.
Further, in the step 3) in, the extension is towards laterally horizontal bending so that the extension it is closely sealed
The side end of the isolating membrane.
Further, in the step 3) in, the extension after bending be located at first collector plate with it is described every
Between the side end of film.
Further, in the step 3) in, after the extension bending, the top of first collector plate is towards institute
The side end of isolating membrane is stated against being formed towards inflection between the top of first collector plate and the side end of the extension
The bending transition structure of folding.
Further, the middle part of the structure after second connection sheet and the closely sealed connection of first connection sheet is towards described
Extrude between battery cap and isolating membrane so that structure doubling shape of second connection sheet with the first connection sheet after closely sealed is placed in described
Between battery cap and isolating membrane.
Further, the first collector plate city doubling lamellar, the bottom of first collector plate is connected to described
Positioned opposite two side of extension.
Compared with prior art, the inner bending method of attachment of the present invention is provided battery cap and battery core, the present invention is provided
Battery cap and battery core inner bending method of attachment so that the extension of conductive base forms the multi-sheet structure for separating shape, this
Sample, then arbitrarily and conveniently can bend to extension, by arranging the second collector plate and the first collector plate, realize battery
Top cover is connected with the extension of conductive base, the side end of isolating membrane is resisted against by extension bending, by the first collector plate
First connection sheet is connected with the second connection sheet of the second collector plate, and connect after structure doubling inwardly be placed in battery cap with every
Between film, greatly reduce conductive base extension and extend outwardly length, so, then can increase the length of battery core isolating membrane section
Degree, that is, the capacity that increased battery.
Description of the drawings
Fig. 1 is the schematic perspective view that the extension of battery core provided in an embodiment of the present invention is connected with the first collector plate；
Fig. 2 is that the second collector plate provided in an embodiment of the present invention connects respectively 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 that the second collector plate provided in an embodiment of the present invention connects respectively after the first collector plate and battery cap and bending
Schematic perspective view；
Fig. 5 is the schematic diagram at the B in Fig. 4；
Fig. 6 is the schematic perspective view after battery cap provided in an embodiment of the present invention is connected with battery core；
Fig. 7 is the schematic perspective view that the extension of the battery core that another embodiment of the present invention is provided is connected with the first collector plate.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
It is described in detail below in conjunction with realization of the specific embodiment to the present invention.
With reference to shown in Fig. 1~Fig. 7, for the preferred embodiment that the present invention is provided.
The present embodiment provides the inner bending method of attachment of battery cap and battery core, for battery cap 105 and battery core to be entered
Row connection, battery core includes conductive base and isolating membrane, and conductive base is in flat-shaped ring-shaped, can be Copper Foil or aluminium foil, every
The periphery at the middle part of conductive base is wrapped in from film, and conductive base forms the extension 102 for extending isolating membrane two ends.
Battery cap and the inner bending method of attachment of battery core, comprise the following steps：
1), the termination of the extension of conductive base is cut off so that the extension 102 of conductive base forms and separates many of shape
Laminated structure, so, after the termination of the extension 102 of conductive base is removed, the extension 102 of conductive base then will not be subject to
The restriction of termination so that whole extension 102 can be towards lateral bending so that extension 102 can bend closely sealed in isolating membrane
101 side end；
2), with reference to shown in Fig. 1, the side of the bottom of the first collector plate 103 is connected on the side of extension 102, certainly,
Such as can be connect towards sonic soldering by various connected modes；The top of the first collector plate 103 extends upward, forms first and connects
Piece 104；
3), by extension 102 towards lateral bending so that extension 102 is attached to the side end of isolating membrane 101；
4), shown in reference picture 2-3, in the lower surface of battery cap 105 the second collector plate 106, second collector plate are connected
106 inside is connected with the lower surface of battery cap 105, and the outside of the second collector plate 106 extends outwardly and bends down, is formed
Second connection sheet 107, the closely sealed connection of the first connection sheet 104 of the collector plate 103 of the second connection sheet 107 and first；
5), with reference 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 be placed in after doubling between battery cap 105 and isolating membrane 101.
The battery cap of above-mentioned offer and the inner bending method of attachment of battery core so that the extension 102 of conductive base is formed
The multi-sheet structure of shape is separated, so, then arbitrarily and conveniently extension 102 can be bent, by arranging the second collector plate
106 and first collector plate 103, realize that battery cap 105 is connected with the extension 102 of conductive base, it is curved by extension 102
Folding is resisted against the side end of isolating membrane 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 connecting is placed between battery cap 105 and isolating membrane 101, is greatly reduced and is led
Electric base material extension 102 extends outwardly length, so, then can increase the length of 101 sections of battery core isolating membrane, that is, increased
The capacity of battery.
In above-mentioned steps 1) in, in order that the extension 102 of conductive base forms the splintery structure for separating shape, can be with
Before conductive base and isolating membrane parcel, then first conductive base is processed so that the conductive base after being wrapped
Extension 102 formed separate shape splintery structure；Or, or conductive base be isolated after film parcel, then directly
Two terminations of the extension 102 of conductive base are cut off, it is also possible to realize that the extension 102 of electric base material is formed and separate many of 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, so, are easy to second
The connection of the collector plate 103 of collector plate 106 and first and arrangement.
Or, as other embodiment, with reference to shown in Fig. 7, the city doubling lamellar of the first collector plate 103, the first collector plate 103
Bottom be connected to positioned opposite two side of extension 102.
In step 3) in, extension 102 is towards laterally horizontal bending so that the closely sealed side in isolating membrane 101 in extension 102
Portion, also, the extension 102 after bending, positioned between the first collector plate 103 and the side end of isolating membrane 101, so, it is right to be easy to
First collector plate 103 is processed；The top of the first collector plate 103 vertically bends outwardly, forms the first connection of vertical bending
Piece 104.
In step 3) in, after extension 102 bends, the side end of the top of the first collector plate 103 towards isolating membrane 101
Against so, the bending transition being formed between the end of the top of the first collector plate 103 and extension 102 towards inner bending is tied
Structure 108, so, that reduces the end of battery core isolating membrane 101 as far as possible occupies size, is further effectively increased the length of isolating membrane 101
Size.
In step 5) in, by the middle part of the structure after the second connection sheet 107 and the closely sealed connection of the first connection sheet 104 towards electricity
Extrude between pond top cover 105 and isolating membrane 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 isolating membrane 101.
In the present embodiment, additionally provide the inner bending attachment structure of battery cap and battery core, including battery cap 105,
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 open of housing, electricity
Core is placed in the inner chamber of housing, and battery core includes conductive base and isolating membrane 101, wherein, isolating membrane 101 is wrapped in conductive base
The periphery at middle part, the two ends of conductive base are extended outside the side end of isolating membrane 101, form extension 102, extension 102
Termination forms the multi-sheet structure for separating shape through excision, and extension 102 bends the closely sealed side end in isolating membrane 101.
On the closely sealed extension 102 in bottom of the first collector plate 103, the top of the first collector plate 103 extends upward, forms first
Connection sheet 104；The inside of the second collector plate 106 is connected to the lower surface of battery cap 105, the outside court of the second collector plate 106
Outer extension, and bend down, 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 be connected with the first connection sheet 104 after structure doubling inwardly, be placed in battery cap 105 and isolating membrane
Between 101.
The above-mentioned inner bending attachment structure for being formed in battery cap and battery core, because the extension 102 of conductive base is formed
The multi-sheet structure of shape is separated, so, then arbitrarily and conveniently extension 102 can be bent, by arranging the second collector plate
106 and first collector plate 103, realize that battery cap 105 is connected with the extension 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 down the second connection sheet 107, by the first connection
The closely sealed connection of 104 and second connection sheet of piece 107, be placed in after the doubling doubling inwardly of the structure after closely sealed connection battery cap 105 with
Between isolating membrane 101, so so that the physical dimension that the whole side of battery core isolating membrane 101 is formed is less, hence for fixed ruler
For very little housing, the size of isolating membrane 101 of battery core then can be greatly increased, and then increased 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, so, are easy to second
The connection of the collector plate 103 of collector plate 106 and first and arrangement.
Extension 102 is towards laterally horizontal bending so that the closely sealed side end in isolating membrane 101 in extension 102, also, curved
Extension 102 after folding is located at the inner side of the first collector plate 103, so, is easy to process the first collector plate 103.
The top of the first collector plate 103 towards isolating membrane 101 side end against so, on the top of the first collector plate 103
The bending transition structure 108 towards inner bending is formed with and the end of extension 102 between, so, battery core isolating membrane is reduced as far as possible
101 ends occupy size, are further effectively increased the length dimension of isolating membrane 101.
In addition, the horizontal arrangement of the second collector plate 106, so, 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, so,
It is easy to doubling to be placed between battery cap 105 and isolating membrane 101.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. the inner bending method of attachment of battery cap and battery core, it is characterised in that comprise the following steps：
1), battery core includes conductive base and isolating membrane, and isolating membrane is wrapped in the periphery at the middle part of the conductive base, and described
Conductive base forms the extension for extending the isolating membrane two ends so that the extension of the conductive base forms separate type
Splintery structure；
2), the side of the first collector plate bottom is connected to the side of the extension, the top of first collector plate is upward
Extend, form the first connection sheet；
3), by the extension towards lateral bending so that the extension is resisted against the side end of the isolating membrane；
4), the inside of the second collector plate be connected to the lower surface of battery cap, the outside of second collector plate extends outwardly
And bend down, form the second connection sheet, the closely sealed connection of the first connection sheet of second connection sheet and first collector plate；
5), second connection sheet is placed in into the battery top with the structure doubling inwardly after the closely sealed connection of first connection sheet
Between lid and isolating membrane.
2. the inner bending method of attachment of battery cap as claimed in claim 1 and battery core, it is characterised in that second current collection
Piece and the first collector plate distinguish structure in the form of sheets.
3. the inner bending method of attachment of battery cap as claimed in claim 1 or 2 and battery core, it is characterised in that in the step
It is rapid 3) in, the extension is towards laterally horizontal bending so that the closely sealed side end in the isolating membrane in the extension.
4. the inner bending method of attachment of battery cap as claimed in claim 1 or 2 and battery core, it is characterised in that in the step
It is rapid 3) in, the extension after bending be located between first collector plate and the side end of the isolating membrane.
5. the inner bending method of attachment of battery cap as claimed in claim 1 or 2 and battery core, it is characterised in that in the step
It is rapid 3) in, after the bending of the extension, the top of first collector plate towards the isolating membrane side end against in institute
State the bending transition structure formed between the top of the first collector plate and the side end of the extension towards inner bending.
6. the inner bending method of attachment of battery cap as claimed in claim 1 or 2 and battery core, it is characterised in that described second
The middle part of the structure after connection sheet and the closely sealed connection of first connection sheet extrudes towards between the battery cap and isolating membrane,
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 isolating membrane.
7. the inner bending method of attachment of battery cap as claimed in claim 1 or 2 and battery core, it is characterised in that described first
Collector plate city doubling lamellar, the bottom of first collector plate is connected to positioned opposite two side of the extension
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 true CN106684302A (en) | 2017-05-17 |
| CN106684302B CN106684302B (en) | 2019-08-30 |
Family
ID=58848772
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN106684302B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106301A (en) * | 2019-04-02 | 2020-05-05 | 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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| 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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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111106301A (en) * | 2019-04-02 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Secondary battery and battery module |
| 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 |
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| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106684302B (en) | 2019-08-30 |
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