CN110247123A - A kind of core strueture, manufacturing method and battery - Google Patents
A kind of core strueture, manufacturing method and battery Download PDFInfo
- Publication number
- CN110247123A CN110247123A CN201910521032.9A CN201910521032A CN110247123A CN 110247123 A CN110247123 A CN 110247123A CN 201910521032 A CN201910521032 A CN 201910521032A CN 110247123 A CN110247123 A CN 110247123A
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- CN
- China
- Prior art keywords
- core
- pole piece
- tab
- positive
- diaphragm
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to a kind of core strueture, manufacturing method and battery, core strueture includes two core in parallel, and the parallel connection core uses Contiuum type of structure, in the fabrication process disposable manufacture production.It is fabricated using core strueture described above, can greatly propose battery production efficiency, true battery capacity consistency and the security performance for improving battery.The present invention uses two core parallel-connection structures, and two-fold core can be processed disposably, production efficiency can be greatly improved, while can guarantee the consistency of battery core performance very well.
Description
Technical field
The present invention relates to lithiums from battery technology field, and in particular to a kind of core strueture, manufacturing method and battery.
Background technique
Currently, square lithium ion power battery mainly uses winding process to be manufactured.In order to improve battery capacity and electricity
Pond performance is mainly produced in such a way that multiple core are in parallel at present, and wherein the parallel connection of two-fold core is main parallel way
One of, i.e. two-fold core is wound respectively, is then attached again by various connection types, to realize core parallel connection.
Inventor since single core tab leaks outside, is cutting tab and volume the study found that manufacture using the above method
It is folded inward around will appear part tab in the process, so as to cause battery short circuit, there are security risks.In addition, single core point
It does not produce, then core is arranged in pairs or groups again, and it is in parallel to carry out, and since single core manufacturing process has differences, leads to battery one after assembling
Cause property is undesirable.Furthermore single core occupies autonomous device respectively and produced, the production efficiency of battery has been seriously affected.
Summary of the invention
The purpose of the present invention is to provide a kind of core strueture, manufacturing method and batteries, double using two core parallel-connection structures
Core can be processed disposably, production efficiency can be greatly improved, while can guarantee the consistency of battery core performance very well.
To achieve the above object, the invention adopts the following technical scheme:
A kind of core strueture, including the first core and the second core being arranged in parallel, first core and the second core are by
One pole piece and opposite polarity second pole piece of the first pole piece and setting are between first pole piece and second pole piece and outer
The membrane winding of side folds；
First pole piece is made of identical first single pole piece of two panels polarity, passes through the first tab between the first single pole piece of two panels
Connection, second pole piece it is opposite with first single pole piece by two panels polarity and be correspondingly arranged with first single pole piece the
Two single pole pieces are constituted, and are connected between the second single pole piece of two panels by the second tab, first single pole piece and the second single pole piece it
Between be equipped with diaphragm, and the form and dimension phase of the form and dimension of the diaphragm and first single pole piece, the second single pole piece
Adaptation.
Further, the size of first single pole piece is identical, and is symmetrical set by the first tab, and described second is single
The size of pole piece is identical, and is symmetrical set by the second tab.
A kind of manufacturing method of core strueture, comprising:
Coated positive plate, negative electrode tab are subjected to roll-in cutting respectively, two sides are material area after positive and negative plate roll-in cutting, in
Between be tab area；
It carries out positive plate that roll-in has been cut, negative electrode tab to cut tab respectively, be wanted according to the design of tab shape and size size
It asks, is cut in laser and cut out tab in equipment, tab is made to connect the area Liang Geliao；
According to the length requirement of core positive/negative plate, the identifying hole of core positive plate, negative electrode tab is cut out；
The positive and negative plate for cutting tab and diaphragm are wound according to the overlapped way of diaphragm, negative electrode tab, diaphragm, positive plate,
According to positive plate, negative electrode tab identifying hole, after the positive/negative plate and diaphragm length of having rolled up the setting of a core, successively cutting is positive
Piece, negative electrode tab and diaphragm are completed at the same time two core windings.
A kind of battery, comprising: shell and be mounted on the intracorporal battery core of shell, the battery core upper end is equipped with for being separately connected just
Tab, total positive bus of negative electrode lug, total negative bus, the hull outside is equipped with converges with total positive bus, total bear respectively
Arrange positive terminal, the negative terminal of connection.
As shown from the above technical solution, core strueture of the present invention, manufacturing method and battery, when manufacturing battery,
Two-fold core can be processed disposably, and production efficiency can be greatly improved；And tab binder area does not leak outside, and is manufacturing
In journey tab will not turn down to causing inside core core short-circuit, battery safety is greatly improved.Furthermore two core just,
Negative electrode tab all time processings produce, and pole piece consistency is preferable, can guarantee the consistency of battery core performance very well.
Detailed description of the invention
Fig. 1 is the structural schematic diagram before negative electrode tab shearing of the present invention；
Fig. 2 is the structural schematic diagram after negative electrode tab shearing of the invention；
Fig. 3 is positive and negative plate and diaphragm stacking schematic diagram of the invention；
Fig. 4 is that two-fold core of the present invention closes cored structure schematic diagram；
Fig. 5 is the structural schematic diagram of single battery of the present invention；
Fig. 6 is that winding of the invention enters piece schematic diagram.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
As shown in figures 1 to 6, the core strueture of the present embodiment, including the first core 1 and the second core 2 being arranged in parallel, this first
Core 1 and the second core 2 by be stacked the first diaphragm 11, negative electrode tab 12, the second diaphragm 13 and pass through with positive plate 14
Winding folds；
As shown in Figure 1-3, the negative electrode tab 12 is made of the identical cathode single pole piece 121,122 of two panels polarity, two panels single pole piece
121, it is connected by the first tab 123 between 122, equally, positive plate 14 is by the identical positive single pole piece 141,142 of two panels polarity
Constitute, connected by the second tab 143 between two panels anode single pole piece 141,142, cathode single pole piece 121,122 and two panels just
Between pole single pole piece 141, the 142 and outside of negative electrode tab 14 is respectively arranged with diaphragm 13 and diaphragm 11.
In order to facilitate battery manufacture and winding, the cathode single pole piece 121,122 of the present embodiment, positive single pole piece 141,142
And tab connected to it passes through and cuts out to form an overall structure.Schematic diagram after completing tab shearing is as shown in Figure 2.
As shown in Fig. 3,6, the specific manufacturing process of the battery core of the present embodiment is as follows:
Step 1: coated positive plate 14, negative electrode tab 12 are subjected to roll-in cutting respectively；
Step 2: carrying out positive plate 14 that roll-in has been cut, negative electrode tab 12 to cut tab respectively, big according to tab shape and size
Small design requirement, cuts in laser and cuts out tab in equipment；It is related to capacity to meet battery core, the present embodiment is positive and negative according to core
The length requirement of pole piece cuts out the length identifying hole of core positive plate 14, negative electrode tab 12；
Step 3: as shown in fig. 6, will cut positive plate 14, negative electrode tab 12 and the diaphragm of tab according to diaphragm 11, negative electrode tab 12,
Diaphragm 13, positive plate 14 overlapped way be wound, according to positive plate 14,12 identifying hole of negative electrode tab, rolled up a core and set
After fixed positive and negative plate and diaphragm length, positive plate 14, diaphragm 13, negative electrode tab 12 and diaphragm 11 are successively cut off, completes two simultaneously
Join the winding of core
Its winding steps includes:
First layer diaphragm 11 and second layer diaphragm 13 are selected into volume winding one week in advance；Negative electrode tab 12 and positive plate 13 are carried out into piece
Winding, for negative electrode tab 12 between first layer diaphragm 11 and second layer diaphragm 13, positive plate 14 is located at outermost, diaphragm face
Just, the area Ji Liao；It is initially switched off positive plate according to the positive/negative plate of core setting and diaphragm length, negative electrode tab 12 and diaphragm 11 roll up one again
It realizes 12 clad anode piece 14 of negative electrode tab in week, cuts off negative electrode tab 12, diaphragm 13 realizes that diaphragm 13 coats cathode again mostly around one week
Piece cuts off diaphragm, completes a core winding；Core is overturn along symmetrical center line, is overlapped two core, core positive and negative electrode
Ear and busbar connector weld together, and positive and negative busbar connector is welded with the positive and negative pole of battery core respectively again, realize two disjunctor core simultaneously
Connection.
Battery core after winding as shown in figure 4, the first core 1 and the second core 2 is in parallel constitutes battery core in Fig. 4, tab 3 with
Core 1 and core 2 are integrally formed, convenient manufacture production disposable in the fabrication process.The present invention is using battery core knot described above
Structure is fabricated, and battery production efficiency, true battery capacity consistency and the security performance for improving battery can be greatly proposed.
As figure 5 illustrates, the single battery of the present embodiment includes two battery cores 1,2 in parallel, is welded in the upper end of battery core 1 and 2
It is respectively used to be separately connected anode ear, total positive bus 4 of negative electrode lug, total negative bus 5, total positive bus 4, total negative bus
Positive terminal 6, negative terminal 7 are respectively welded on 5；Finally core is placed in the shell of corresponding size after completing welding, makes anode
Column 6, negative terminal 7, which are located at outside shell, completes entire battery core assembling.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (5)
1. a kind of core strueture, it is characterised in that: including the first core and the second core being arranged in parallel, first core and
Second core is by the first pole piece and opposite polarity second pole piece of the first pole piece and is arranged in first pole piece and described second
The membrane winding between pole piece and outside folds；
First pole piece is made of identical first single pole piece of two panels polarity, passes through the first tab between the first single pole piece of two panels
Connection, second pole piece it is opposite with first single pole piece by two panels polarity and be correspondingly arranged with first single pole piece the
Two single pole pieces are constituted, and are connected between the second single pole piece of two panels by the second tab, first single pole piece and the second single pole piece it
Between be equipped with diaphragm, and the form and dimension phase of the form and dimension of the diaphragm and first single pole piece, the second single pole piece
Adaptation.
2. core strueture according to claim 1, it is characterised in that: the size of first single pole piece is identical, and passes through
First tab is symmetrical set, and the size of second single pole piece is identical, and is symmetrical set by the second tab.
3. core strueture according to claim 1, it is characterised in that: shown first pole piece and the second pole piece are connected to it
Tab is all made of integrated formed structure.
4. a kind of manufacturing method of core strueture characterized by comprising
Coated positive plate, negative electrode tab are subjected to roll-in cutting respectively, two sides are material area after positive and negative plate roll-in cutting, in
Between be tab area；
It carries out positive plate that roll-in has been cut, negative electrode tab to cut tab respectively, be wanted according to the design of tab shape and size size
It asks, is cut in laser and cut out tab in equipment, tab is made to connect the area Liang Geliao；
According to the length requirement of core positive/negative plate, the identifying hole of core positive plate, negative electrode tab is cut out；
The positive and negative plate for cutting tab and diaphragm are wound according to the overlapped way of diaphragm, negative electrode tab, diaphragm, positive plate,
According to positive plate, negative electrode tab identifying hole, after the positive/negative plate and diaphragm length of having rolled up the setting of a core, successively cutting is positive
Piece, negative electrode tab and diaphragm are completed at the same time two core windings.
5. a kind of battery characterized by comprising
Shell and be mounted on the intracorporal battery core of shell, the battery core upper end be equipped with for be separately connected anode ear, negative electrode lug it is total just
Busbar connector, total negative bus, the hull outside are equipped with the positive terminal connecting respectively with total positive bus, total negative bus, bear
Pole, the battery core are battery core described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521032.9A CN110247123A (en) | 2019-06-17 | 2019-06-17 | A kind of core strueture, manufacturing method and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521032.9A CN110247123A (en) | 2019-06-17 | 2019-06-17 | A kind of core strueture, manufacturing method and battery |
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| Publication Number | Publication Date |
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| CN110247123A true CN110247123A (en) | 2019-09-17 |
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| CN201910521032.9A Pending CN110247123A (en) | 2019-06-17 | 2019-06-17 | A kind of core strueture, manufacturing method and battery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828770A (en) * | 2019-11-19 | 2020-02-21 | 凌帕新能源科技(上海)有限公司 | Manufacturing method of lithium battery |
| CN111883853A (en) * | 2020-07-24 | 2020-11-03 | 合肥国轩高科动力能源有限公司 | Parallelly connected assembled many rolls up core lithium cell |
| CN111933996A (en) * | 2020-08-03 | 2020-11-13 | 苏州凌威新能源科技有限公司 | Manufacturing method of lithium battery |
| CN112038705A (en) * | 2020-09-29 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Battery roll core forming method, battery roll core structure and pole piece structure |
| CN114597473A (en) * | 2022-03-17 | 2022-06-07 | 合肥国轩高科动力能源有限公司 | Lithium battery manufacturing method and lithium battery |
| CN114614102A (en) * | 2022-03-21 | 2022-06-10 | 合肥国轩高科动力能源有限公司 | Preparation method and application of composite current collector battery cell |
| CN115842098A (en) * | 2022-08-05 | 2023-03-24 | 宁德时代新能源科技股份有限公司 | Pole piece, battery monomer, battery, electric device and pole piece manufacturing device |
| WO2023236346A1 (en) * | 2022-06-09 | 2023-12-14 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery cell, battery and electric apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828770A (en) * | 2019-11-19 | 2020-02-21 | 凌帕新能源科技(上海)有限公司 | Manufacturing method of lithium battery |
| CN111883853A (en) * | 2020-07-24 | 2020-11-03 | 合肥国轩高科动力能源有限公司 | Parallelly connected assembled many rolls up core lithium cell |
| CN111933996A (en) * | 2020-08-03 | 2020-11-13 | 苏州凌威新能源科技有限公司 | Manufacturing method of lithium battery |
| CN112038705A (en) * | 2020-09-29 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Battery roll core forming method, battery roll core structure and pole piece structure |
| CN114597473A (en) * | 2022-03-17 | 2022-06-07 | 合肥国轩高科动力能源有限公司 | Lithium battery manufacturing method and lithium battery |
| CN114614102A (en) * | 2022-03-21 | 2022-06-10 | 合肥国轩高科动力能源有限公司 | Preparation method and application of composite current collector battery cell |
| WO2023236346A1 (en) * | 2022-06-09 | 2023-12-14 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery cell, battery and electric apparatus |
| CN115842098A (en) * | 2022-08-05 | 2023-03-24 | 宁德时代新能源科技股份有限公司 | Pole piece, battery monomer, battery, electric device and pole piece manufacturing device |
| CN115842098B (en) * | 2022-08-05 | 2024-01-09 | 宁德时代新能源科技股份有限公司 | Pole piece, battery monomer, battery and electricity utilization device and pole piece manufacturing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190917 |
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| RJ01 | Rejection of invention patent application after publication |