CN202940305U - Laminated type core reeling structure for lithium ion battery - Google Patents
Laminated type core reeling structure for lithium ion battery Download PDFInfo
- Publication number
- CN202940305U CN202940305U CN201220541425XU CN201220541425U CN202940305U CN 202940305 U CN202940305 U CN 202940305U CN 201220541425X U CN201220541425X U CN 201220541425XU CN 201220541425 U CN201220541425 U CN 201220541425U CN 202940305 U CN202940305 U CN 202940305U
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- Prior art keywords
- pole piece
- diaphragm
- lithium ion
- ion battery
- wider
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- 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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- 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 utility model provides a laminated type core reeling structure for a lithium ion battery. The core reeling structure comprises a plurality of groups of laminated positive pole pieces and negative pole pieces, and diaphragm pieces clamped between the positive pole pieces and the negative pole pieces; and negative pole pieces are wider than the positive pole pieces, and the diaphragm pieces are wider than the negative pole pieces. The laminated type core reeling structure has the benefits that as the laminated core reeling structure comprising the positive pole pieces, the negative pole pieces and the diaphragm pieces is adopted, the production efficiency of the lithium ion battery is improved and the production and operation difficulty is reduced under the condition that electrochemical properties are not decreased.
Description
Technical field
The utility model relates to a kind of inside battery structure, refers in particular to a kind of stack type lithium ion battery volume cored structure.
Background technology
Lithium ion battery has advantages of that operating voltage is high, energy density is large, have extended cycle life, self discharge is little, memory-less effect, various modern communication equipment and electronic device field have been widely used in, while is along with the fast development of electric bicycle, electric automobile and electric tool, demand to lithium ion battery is also increasing, and is also more and more higher to the performance requirement of lithium ion battery.
Along with the lifting that performance of lithium ion battery is required, most of high performance requirements and high capacity cell all adopt stacked explained hereafter, its complex process, efficient is low, and when increasing along with the lamination number of plies, its production difficulty strengthens gradually, so under the prerequisite that does not reduce the lithium ion battery chemical property, how enhancing productivity, reducing the production operation difficulty is to solve the important process that lamination process is produced.
The utility model content
The purpose of this utility model is to have overcome defects, and a kind of stack type lithium ion battery volume cored structure is provided.
The purpose of this utility model is achieved in that a kind of stack type lithium ion battery volume cored structure, and it comprises anode pole piece, the cathode pole piece that many groups stack, and is folded with diaphragm between anode pole piece, cathode pole piece; Described cathode pole piece is wider than anode pole piece, and described diaphragm is wider than cathode pole piece;
In said structure, described cathode pole piece is wider than anode pole piece 1-2mm;
In said structure, described diaphragm is wider than cathode pole piece 2-4mm.
The utility model also relates to a kind of stack type lithium ion battery volume cored structure, and it comprises many group volume core units, and described volume core unit comprises anode pole piece, diaphragm and the cathode pole piece that stacks; Described cathode pole piece is wider than anode pole piece, and described diaphragm is wider than cathode pole piece; Reel by diaphragm strip between many group volume core units and is stacked setting, and the placement of being separated by of anode pole piece, cathode pole piece between adjacent volume core unit;
In said structure, described cathode pole piece is wider than anode pole piece 1-2mm;
In said structure, described diaphragm is wider than cathode pole piece 2-4mm;
In said structure, described diaphragm strip is " it " type folded roll around described many group volume core units, and each volume core unit is arranged at respectively in " it " type crack;
In said structure, described diaphragm strip is " returning " type folded roll around described many group volume core units.
After the beneficial effects of the utility model are to adopt the stacked winding-structure of anode pole piece, cathode pole piece, diaphragm, make lithium battery be not reduce in the situation of chemical property and improved production efficiency, reduce the production operation difficulty.
Description of drawings
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is scheme 1 structural representation of the present utility model;
Fig. 2 is the volume core unit structural representation of scheme 2 of the present utility model;
Fig. 3 is embodiment 1 structural representation of scheme 2 of the present utility model;
Fig. 4 is embodiment 2 structural representations of scheme 2 of the present utility model.
The 1-anode pole piece; The 2-cathode pole piece; The 3-diaphragm; 4-rolls up core unit; 5,6-diaphragm strip.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, being realized purpose and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
See also Fig. 1, the utility model relates to a kind of stack type lithium ion battery volume cored structure, and it comprises anode pole piece 1, the cathode pole piece 2 that many groups stack, and is folded with diaphragm 3 in anode pole piece 1,2 of cathode pole pieces.Different from original structure is, cathode pole piece should be wider than anode pole piece herein, and diaphragm further should be wider than cathode pole piece.
During production, first anode pole piece 1, cathode pole piece 2 and diaphragm 3 are pressed the punching of technological requirement size, best, cathode pole piece 2 is wider than anode pole piece 1 at 1-2mm, and diaphragm is wider than cathode pole piece 2-4mm, then stacks gradually according to the mode of anode pole piece 1/ diaphragm 3/ cathode pole piece 2, anode pole piece 1/ diaphragm 3/ cathode pole piece 2/ diaphragm 3/ anode pole piece 1 or cathode pole piece 2/ diaphragm 3/ anode pole piece 1/ diaphragm 3/ cathode pole piece 2 and can carry out final coiling.
Thus, after adopting above-mentioned a kind of stacked winding-structure, make lithium battery be not reduce in the situation of chemical property and improved production efficiency, reduce the production operation difficulty.
Referring to Fig. 2, the utility model also provides another kind of stack type lithium ion battery volume cored structure, it comprises many group volume core units 4, volume core unit 4 comprises that the anode pole piece 1 that stacks, diaphragm 3 and cathode pole piece 2 are in like manner, cathode pole piece 2 in volume core unit 4 should be wider than anode pole piece 1, and diaphragm 3 is wider than cathode pole piece 2.Further reel by a diaphragm strip between above-mentioned many group volume core units 4 and is stacked setting, and the placement of being separated by of anode pole piece 1, the cathode pole piece 2 of 4 of adjacent volume core units.
Thus, during production, first anode pole piece 1, cathode pole piece 2 and diaphragm 3 are pressed the punching of technological requirement size, best, cathode pole piece 2 is wider than anode pole piece 1 at 1-2mm, and diaphragm is wider than cathode pole piece 2-4mm, then stacks gradually formation according to the mode of anode pole piece 1/ diaphragm 3/ cathode pole piece 2, anode pole piece 1/ diaphragm 3/ cathode pole piece 2 or cathode pole piece 2/ diaphragm 3/ anode pole piece 1 and rolls up one by one core unit 4.The benefit of so doing is die-cut good pole piece to be divided into roll up one by one core unit 4 management, and the management when helping lamination process to produce and the protection of pole piece can effectively reduce the difficulty of production operation in addition, are convenient to production operation, enhance productivity.
After completing above-mentioned volume core unit 4 productions, embodiment 1 as shown in Figure 3, with having cut the width diaphragm strip 5 identical with above-mentioned diaphragm 3 width, be converted into " it " font, then the volume core unit 4 of respectively above-mentioned Fig. 2 having been folded puts into the two-layer diaphragm strip crack of " it " type, guarantee that volume core unit 4 neatly stacks, and the placement of being separated by of anode pole piece 1/ diaphragm 3/ cathode pole piece 2, then flatten whole volume core, stick fixedly gummed paper, can complete coiling.
After completing above-mentioned volume core unit 4 productions, also can adopt embodiment 2 as shown in Figure 4, with having cut the width diaphragm strip 6 identical with above-mentioned diaphragm 3 width, the volume core unit 4 that adopts winding method that Fig. 2 has been folded uses the assembling of reeling of " returning " fonts, should note guaranteeing the placement of being separated by of anode pole piece 1/ diaphragm 3/ cathode pole piece 2 when putting into volume core unit 4, can not misplace, then one flatten whole volume core, stick fixedly gummed paper, can complete coiling.
The above is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (8)
1. a stack type lithium ion battery is rolled up cored structure, it is characterized in that: it comprises anode pole piece, the cathode pole pieces that many groups stack, and is folded with diaphragm between anode pole piece, cathode pole piece; Described cathode pole piece is wider than anode pole piece, and described diaphragm is wider than cathode pole piece.
2. stack type lithium ion battery as claimed in claim 1 is rolled up cored structure, and it is characterized in that: described cathode pole piece is wider than anode pole piece 1-2mm.
3. stack type lithium ion battery as claimed in claim 1 or 2 is rolled up cored structure, and it is characterized in that: described diaphragm is wider than cathode pole piece 2-4mm.
4. a stack type lithium ion battery is rolled up cored structure, it is characterized in that: it comprises many group volume core units, and described volume core unit comprises anode pole piece, diaphragm and the cathode pole piece that stacks; Described cathode pole piece is wider than anode pole piece, and described diaphragm is wider than cathode pole piece; Reel by diaphragm strip between many group volume core units and is stacked setting, and the placement of being separated by of anode pole piece, cathode pole piece between adjacent volume core unit.
5. stack type lithium ion battery as claimed in claim 4 is rolled up cored structure, and it is characterized in that: described cathode pole piece is wider than anode pole piece 1-2mm.
6. stack type lithium ion battery as claimed in claim 4 is rolled up cored structure, and it is characterized in that: described diaphragm is wider than cathode pole piece 2-4mm.
7. stack type lithium ion battery as described in claim 4-6 any one is rolled up cored structure, it is characterized in that: described diaphragm strip is " it " type folded roll around described many group volume core units, and each volume core unit is arranged at respectively in " it " type crack.
8. stack type lithium ion battery as described in claim 4-6 any one is rolled up cored structure, it is characterized in that: described diaphragm strip is " returning " type folded roll around described many group volume core units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220541425XU CN202940305U (en) | 2012-10-22 | 2012-10-22 | Laminated type core reeling structure for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220541425XU CN202940305U (en) | 2012-10-22 | 2012-10-22 | Laminated type core reeling structure for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940305U true CN202940305U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220541425XU Expired - Fee Related CN202940305U (en) | 2012-10-22 | 2012-10-22 | Laminated type core reeling structure for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252732A (en) * | 2016-08-17 | 2016-12-21 | 吉安市优特利科技有限公司 | The manufacture method of lithium-ion-power cell |
-
2012
- 2012-10-22 CN CN201220541425XU patent/CN202940305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252732A (en) * | 2016-08-17 | 2016-12-21 | 吉安市优特利科技有限公司 | The manufacture method of lithium-ion-power cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190715 Granted publication date: 20130515 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210715 Granted publication date: 20130515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20201022 |