CN106356499A - Pole piece and wound battery core - Google Patents
Pole piece and wound battery core Download PDFInfo
- Publication number
- CN106356499A CN106356499A CN201610938997.4A CN201610938997A CN106356499A CN 106356499 A CN106356499 A CN 106356499A CN 201610938997 A CN201610938997 A CN 201610938997A CN 106356499 A CN106356499 A CN 106356499A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- edge
- battery core
- length direction
- extension line
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of power storage devices, and in particular relates to a pole piece and a wound battery core. The pole piece has orthogonal length direction and width direction, one end of the pole piece in the length direction is a beginning terminal, the other end of the pole piece is an ending terminal, and the pole piece is wound along the length direction; and along the length direction, from the beginning terminal to the ending terminal, the dimension of the pole piece gradually changes in the width direction, and the dimension gradually decreases. After winding operation is carried out on the pole piece, the formed wound battery core is a battery core gradually changing in thickness. Therefore, the battery core gradually changing in thickness can be processed by improving the shape of the pole piece, and the processing technique of the wound battery core can adopt a one-time winding mode, thereby simplifying the processing technique of the wound battery core.
Description
Technical field
The application is related to energy storage device field, more particularly, to a kind of pole piece and winding battery core.
Background technology
At present, electronic technology develops rapidly, the higher and higher Technology of integration degree make mobile phone, notebook computer,
Constantly towards lightening development, it is right that the less and less inner space of these electronic equipments makes the mobile electronic devices such as digital camera
The demand of space availability ratio improves constantly.The ultra-thin knife edge especially in terms of frivolous notebook computer, with macbook as representative
Type notebook configuration design makes traditional regular tetragonal body battery core design cannot meet the demand of its space availability ratio.New is different
The appearance of shape battery core such as step battery core perfectly solves this difficult problem.
In current step battery core design, the laminated cell fabrication scheme with lg as representative has inherent advantage.
And in convolute manufacture technique, by the way of the splicing of size battery core, generally to realize stepped ramp type abnormity battery core.Adopt in this way
During the winding step battery core of splicing, need to splice various sizes of naked battery core, lead to the processing technique winding battery core comparatively laborious.
Content of the invention
This application provides a kind of pole piece and winding battery core, to simplify winding battery core while improving space availability ratio
Processing technique.
The first aspect of the application provides a kind of pole piece, and described pole piece has orthogonal length direction and width
Direction, and described pole piece one end on described length direction is initiating terminal, the other end is trailing end, and described pole piece is along described length
Degree direction winding；
Along described length direction, from described initiating terminal to described trailing end, described pole piece is on described width
Size gradation, and described size is gradually reduced.
Preferably, on described width, lateral edges of described pole piece are first edge, and another lateral edges are second
Edge, the extension line of described first edge is straight line.
Preferably, the extension line of described second edge is straight line, and second edge tilts with respect to described length direction.
Preferably, described first edge tilts with respect to described length direction.
Preferably, described first edge and described second edge are with regard to described length direction symmetrically structure.
Preferably, described first edge extends on described length direction.
Preferably, the extension line of described second edge is curve.
Preferably, described first edge tilts with respect to described length direction.
Preferably, described first edge extends on described length direction.
Preferably, on described width, lateral edges of described pole piece are first edge, and another lateral edges are second
Edge, the extension line of described first edge and the extension line of second edge are curve.
Preferably, the extension line of at least one of described first edge and described second edge is circular arc line.
Preferably, described first edge and described second edge are with regard to described length direction symmetrically structure.
The second aspect of the application provides a kind of winding battery core, and it includes the pole piece described in any of the above-described.
The technical scheme that the application provides can reach following beneficial effect:
In pole piece provided herein, along the length direction of battery core, from the initiating terminal of pole piece to trailing end, pole piece exists
Size gradation on local width direction, and this size is gradually reduced, and after implementing operating winding to this pole piece, ultimately forms
Winding battery core is the battery core of gradient thickness.Therefore, the application just can process gradient thickness by the shape improving pole piece
Battery core is so that the processing technique of winding battery core can make battery core better adapt to electronics in the way of using disposable winding
The installing space of equipment, to improve space availability ratio, can also simplify the processing technique of winding battery core simultaneously.
It should be appreciated that above general description and detailed description hereinafter are only exemplary, can not be limited this
Application.
Brief description
A kind of structural representation of pole piece that Fig. 1 is provided by the embodiment of the present application；
Schematic diagram when Fig. 2 is wound for pole piece shown in Fig. 1；
The schematic diagram of the winding battery core for being formed after pole piece coiling shown in Fig. 1 for the Fig. 3；
Fig. 4 is the schematic diagram of another kind of winding battery core being different from Fig. 3；
The scheme of installation of the winding battery core that Fig. 5 provides for the embodiment of the present application；
The structural representation of another kind of pole piece that Fig. 6 is provided by the embodiment of the present application；
The schematic diagram of the winding battery core for being formed after pole piece coiling shown in Fig. 6 for the Fig. 7；
The structural representation of another pole piece that Fig. 8 is provided by the embodiment of the present application；
Schematic diagram when Fig. 9 is wound for pole piece shown in Fig. 8；
The schematic diagram of the winding battery core for being formed after pole piece coiling shown in Fig. 8 for the Figure 10；
The structural representation of another pole piece that Figure 11 is provided by the embodiment of the present application；
The schematic diagram of the winding battery core for being formed after pole piece coiling shown in Figure 11 for the Figure 12；
Figure 13 is the assembling schematic diagram of the battery core of gradient thickness that traditional lamination is formed.
Reference:
1- battery core；
10- initiating terminal；
11- trailing end；
12- change in size region；
13- tab welding region；
14- first edge；
15- second edge；
1 '-battery core；
2- lug；
3- installation foundation；
3 '-installation foundation；
4- fluid sealant.
Accompanying drawing herein is merged in description and constitutes the part of this specification, shows the enforcement meeting the application
Example, and be used for explaining the principle of the application together with description.
Specific embodiment
Below by specific embodiment and combine accompanying drawing the application is described in further detail.
As shown in figs. 1-12, the embodiment of the present application provides a kind of pole piece, implements operating winding to this pole piece and can form volume
Around battery core.In order to obtain a kind of winding battery core of gradient thickness, this pole piece can be arranged as follows:
There is orthogonal length direction and width in pole piece, pole piece is along length direction winding herein, and is somebody's turn to do
Pole piece one end in the longitudinal direction is initiating terminal 10, and the other end is trailing end 11；
Along above-mentioned length direction, from initiating terminal 10 to trailing end 11, pole piece size gradation in the direction of the width, and should
Size is gradually reduced.
Specifically, from above-mentioned initiating terminal 10 to trailing end 11, all regions of pole piece size in the direction of the width all may be used
To meet aforementioned variation relation, it is contemplated that generally also needing to soldering polar ear 2 on pole piece, therefore pole piece may include change in size
Region 12 and tab welding region 13, change in size region 12 is the region that on width, size changes, tab welding
Region 13 is reserved part, and its position on whole pole piece can flexibly be arranged.It should be noted that tab welding herein
Region 13 can be rectangular area or non-rectangular area, because its Area comparison is little, is therefore describing whole pole piece
Can substantially not consider during change in size trend.
During processing battery core, irregular cut-parts can be carried out to pole piece so that the structure of pole piece meets aforementioned claim first.So
Afterwards the pole piece after cutting and isolating membrane are assemblied together, you can be wound operating.During winding, can be with the width side of pole piece
It is wound to the bearing of trend (direction that i.e. the winding broken line a of in figure is located) for rotating shaft, during winding, wide on pole piece
Spend larger-size position and be gradually winding to internal layer, width less pole piece section is wound up into the relatively outer layer of battery core 1, and then formed
The battery core 1 of gradient thickness.
As shown in the above, the embodiment of the present application just can process the electricity of gradient thickness by the shape improving pole piece
Core is so that the processing technique of winding battery core can make battery core 1 better adapt to electronics and set in the way of using disposable winding
Standby installing space, to improve space availability ratio, can also simplify the processing technique of winding battery core simultaneously.In addition, as Fig. 5 institute
Show, in the battery core 1 after winding, can control less of size disparity between each layering of pole piece is so that whole battery core 1 is pacified
After being loaded on the electronic equipments such as mobile phone, notebook computer, digital camera, the space between battery core 1 and installation foundation 3 is less.
As shown in figure 13, traditional battery core 1 ' is arranged on installation foundation 3 ' and above can form larger space, by contrast, the embodiment of the present application
The pole piece providing can increase the capacity of battery core 1, room for promotion utilization rate.Meanwhile, the space between battery core 1 and installation foundation is more
After little, the fixation of battery core 1 also can be convenient, and fixing intensity also can improve therewith.
It is noted above, tab welding region 13 can be reserved on pole piece, this tab welding region 13 may be located at pole
On the initiating terminal 10 of piece, and in order to improve weld strength on pole piece for the lug 2, this tab welding region 13 can be set to
Rectangular area, is expanded the bonding area of lug 2 and pole piece as far as possible, and then reaches object defined above with this.
It is to be appreciated that in specific embodiment, the concrete structure of pole piece can adopt various ways, hereinafter enumerates several
The specific constructive form of pole piece, certainly, the concrete structure of pole piece is not limited to following several.
In the direction of the width, lateral edges of above-mentioned pole piece are first edge 14, and another lateral edges are second edge 15, should
The extension line of first edge 14 can be straight line, curve, and when the extension line of first edge 14 is straight line, first edge 14 is permissible
Extend in the longitudinal direction it is also possible to tilt with respect to length direction.In the same manner, the extension line of second edge 15 can be straight
Line, curve, and when the extension line of first edge 15 is straight line, first edge 15 can extend in the longitudinal direction it is also possible to phase
Length direction is tilted.
As Figure 1-4, the first edge 14 of this pole piece and the extension line of second edge 15 are straight line, and first edge
14 alongst extend, and second edge 15 tilts with respect to length direction.That is, during winding pole piece,
That each layer of first edge 14 is generally flush with all the time so that in the battery core 1 that obtains after winding, the maximum position of thickness is in battery core 1
One end of upper setting first edge 14.
As shown in Figure 6 and Figure 7, the first edge 14 of this pole piece and the extension line of second edge 15 are straight line, the first side
Edge 14 and second edge 15 tilt both with respect to length direction, and both inclined degrees are different.The thickness of this kind of battery core 1
Degree maximum region is partial to one end of battery core 1.During winding, the first edge 14 in each layer and second edge 15 all can inside contract one
Fixed distance is so that the thickness maximum position of the battery core 1 finally giving is positioned at the centre position of whole battery core 1, rather than end, with
This adapts to the installation requirement of more kinds of electronic equipments.
As seen in figs. 8-10, the first edge 14 of this pole piece and the extension line of second edge 15 are straight line, first edge
14 and second edge 15 both with respect to length direction tilt, and both tilt degree identical.That is, first edge 14
With second edge 15 with regard to pole piece length direction symmetrically structure.Under this kind of embodiment, the thickness maximum region of battery core 1 is located at
The center position of battery core 1, the thickness change of the battery core 1 after winding is more uniform, more regular.
As is illustrated by figs. 11 and 12, the first edge 14 of this pole piece and the extension line of second edge 15 are curve.So
If, the thickness change of the battery core 1 after winding will be more diversified, adapts to the installation foundation 3 of more kinds of structures with this.Enter one
Step ground, the extension line of at least one of first edge 14 and second edge 15 is circular arc line, is formed as shown in figure 12 with this
Battery core 1.Certainly, under this kind of embodiment, first edge 14 and second edge 15 can also with regard to the length direction of pole piece symmetrically
Structure.
According to the above, multiple battery cores 1 can be obtained, it should be noted that the setting being illustrated according to the above
Mode, can be extended to more be similar in scheme, to obtain more kinds of various structures, complicated special-shaped battery core, full with this
The various installation environments of sufficient battery core 1, and these schemes fall within the protection domain of the application.For example, first edge 14
Extension line is straight line, and the extension line of second edge 15 is curve, and accordingly, the extension line of first edge 14 can be curve,
The extension line of second edge 15 can be straight line.This both of which so that winding after battery core 1 two ends thickness change
Trend differs, to adapt to the irregular installation foundation of shape matching 3.Similarly, the extension line of first edge 14 is straight line, the
When the extension line at two edges 15 is curve, first edge 14 can extend it is also possible to relatively on previously described length direction
Tilt in this length direction.
During using above-mentioned various structure, if lug 2 needs to be arranged on relatively thin one end of battery core 1, can be in lug 2
Initiating terminal 10 arranges the tab welding region 13 of rectangle, with this, lug 2 is welded on this tab welding region 13, concrete such as figure
Shown in 3.If lug 2 needs to be arranged on thicker one end of battery core 1, do not need to arrange the tab welding region 13 of rectangle, and
It is only to retain change in size region 12 so that the size of whole pole piece can be gradually reduced along its length, during fixing lug 2
Can neatly lug 2 be fixed at any feasible location of pole piece, specifically as shown in Figure 4.In addition, lug 2 and battery core 1 it
Between can be attached by fluid sealant 4.
The embodiment of the present application also provides a kind of winding battery core, and this winding battery core includes the pole described by any of the above-described embodiment
Piece.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.All within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (13)
1. a kind of pole piece is it is characterised in that there is orthogonal length direction and width in described pole piece, and described pole
Piece one end on described length direction is initiating terminal, and the other end is trailing end, and described pole piece winds along described length direction；
Along described length direction, from described initiating terminal to described trailing end, size on described width for the described pole piece
Gradual change, and described size is gradually reduced.
2. pole piece according to claim 1 is it is characterised in that on described width, lateral edges of described pole piece
For first edge, another lateral edges are second edge, and the extension line of described first edge is straight line.
3. pole piece according to claim 2 is it is characterised in that the extension line of described second edge is straight line, and the second side
Edge tilts with respect to described length direction.
4. pole piece according to claim 3 is it is characterised in that described first edge tilts with respect to described length direction.
5. pole piece according to claim 4 is it is characterised in that described first edge and described second edge are with regard to described length
Degree direction symmetrically structure.
6. pole piece according to claim 3 is it is characterised in that described first edge extends on described length direction.
7. pole piece according to claim 2 is it is characterised in that the extension line of described second edge is curve.
8. pole piece according to claim 7 is it is characterised in that described first edge tilts with respect to described length direction.
9. pole piece according to claim 7 is it is characterised in that described first edge extends on described length direction.
10. pole piece according to claim 1 is it is characterised in that on described width, lateral edges of described pole piece
For first edge, another lateral edges are second edge, and the extension line of described first edge and the extension line of second edge are song
Line.
11. pole pieces according to claim 10 are it is characterised in that in described first edge and described second edge at least
The extension line of one is circular arc line.
12. pole pieces according to claim 10 are it is characterised in that described first edge and described second edge are with regard to described
Length direction symmetrically structure.
A kind of 13. winding battery cores are it is characterised in that include the pole piece any one of claim 1 to 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938997.4A CN106356499A (en) | 2016-10-25 | 2016-10-25 | Pole piece and wound battery core |
| PCT/CN2016/108019 WO2018076452A1 (en) | 2016-10-25 | 2016-11-30 | Pole plate and winding battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610938997.4A CN106356499A (en) | 2016-10-25 | 2016-10-25 | Pole piece and wound battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106356499A true CN106356499A (en) | 2017-01-25 |
Family
ID=57865065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610938997.4A Pending CN106356499A (en) | 2016-10-25 | 2016-10-25 | Pole piece and wound battery core |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106356499A (en) |
| WO (1) | WO2018076452A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290130A (en) * | 2019-06-16 | 2021-01-29 | 深圳格林德能源集团有限公司 | Spherical polymer lithium battery and manufacturing method thereof |
| WO2023051281A1 (en) * | 2021-09-30 | 2023-04-06 | 比亚迪股份有限公司 | Battery housing |
| WO2023236070A1 (en) * | 2022-06-08 | 2023-12-14 | 宁德新能源科技有限公司 | Electrochemical device and electric apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116259711B (en) * | 2023-04-24 | 2024-09-27 | 江苏天合储能有限公司 | Lithium ion battery pole piece, battery core and lithium ion battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006079942A (en) * | 2004-09-09 | 2006-03-23 | Sanyo Electric Co Ltd | Battery |
| CN201956431U (en) * | 2011-03-11 | 2011-08-31 | 惠州市德赛聚能电池有限公司 | Special-shaped flexible package lithium ion battery |
| CN202159732U (en) * | 2011-06-27 | 2012-03-07 | 深圳市豪鹏科技有限公司 | Positive plate and battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263256B (en) * | 2011-06-24 | 2014-06-18 | 深圳市豪鹏科技有限公司 | Negative plate and battery |
| CN105428725B (en) * | 2015-11-16 | 2018-02-27 | 珠海光宇电池有限公司 | The preparation method and trapezoidal battery core of the trapezoidal battery core of takeup type |
-
2016
- 2016-10-25 CN CN201610938997.4A patent/CN106356499A/en active Pending
- 2016-11-30 WO PCT/CN2016/108019 patent/WO2018076452A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006079942A (en) * | 2004-09-09 | 2006-03-23 | Sanyo Electric Co Ltd | Battery |
| CN201956431U (en) * | 2011-03-11 | 2011-08-31 | 惠州市德赛聚能电池有限公司 | Special-shaped flexible package lithium ion battery |
| CN202159732U (en) * | 2011-06-27 | 2012-03-07 | 深圳市豪鹏科技有限公司 | Positive plate and battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290130A (en) * | 2019-06-16 | 2021-01-29 | 深圳格林德能源集团有限公司 | Spherical polymer lithium battery and manufacturing method thereof |
| CN112290130B (en) * | 2019-06-16 | 2022-08-12 | 深圳格林德能源集团有限公司 | Spherical polymer lithium battery and manufacturing method thereof |
| WO2023051281A1 (en) * | 2021-09-30 | 2023-04-06 | 比亚迪股份有限公司 | Battery housing |
| WO2023236070A1 (en) * | 2022-06-08 | 2023-12-14 | 宁德新能源科技有限公司 | Electrochemical device and electric apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018076452A1 (en) | 2018-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106356499A (en) | Pole piece and wound battery core | |
| CN102299603B (en) | Motor | |
| CN107077959A (en) | Dispensing device for wireless charger | |
| WO2012082680A3 (en) | Stator used in an electrical motor or generator with low loss magnetic material and method of manufacturing a stator | |
| CN106803565A (en) | Battery | |
| US20180083255A1 (en) | Rechargeable battery | |
| CN103579682B (en) | Battery and method of making the same | |
| WO2018076410A1 (en) | Electrode tab and winding battery | |
| CN105429309A (en) | Wireless charging receiver end and manufacturing method thereof | |
| US9978503B2 (en) | Transformer winding, transformer having the same and manufacturing method thereof | |
| US10355563B2 (en) | Motor stator assembly and wire-managing structure thereof | |
| CN202121767U (en) | Large power voice coil | |
| CN104008867A (en) | Metal sheet coil and manufacturing method thereof, inductor, transformer and wireless charger | |
| CN102332552A (en) | Lug, rolled lithium ion cell and soft-package rolled lithium ion battery | |
| CN206389417U (en) | A kind of metal shell antenna assembly and mobile terminal | |
| US7872390B2 (en) | Method for manufacturing a conductor bar of a rotating electrical machine and a conductor bar manufactured according to this method | |
| CN115885414A (en) | Battery and electronic device | |
| EP3249733A1 (en) | Secondary battery | |
| US20170178792A1 (en) | Voltage transformer | |
| CN113994519A (en) | Battery cell structure and battery | |
| CN107134649A (en) | Coil antenna module and preparation method thereof | |
| JP2015204406A (en) | reactor | |
| KR20170123679A (en) | Use and assembly of pancake coils for wireless energy transmission to electric vehicles | |
| CN207074895U (en) | Stator, electric machine assembly and compressor | |
| CN208656534U (en) | Slot insulation structure for motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |
|
| RJ01 | Rejection of invention patent application after publication |