CN208226026U - Wrapping type power cell - Google Patents
Wrapping type power cell Download PDFInfo
- Publication number
- CN208226026U CN208226026U CN201820450945.7U CN201820450945U CN208226026U CN 208226026 U CN208226026 U CN 208226026U CN 201820450945 U CN201820450945 U CN 201820450945U CN 208226026 U CN208226026 U CN 208226026U
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- China
- Prior art keywords
- cathode
- batten
- tab
- positive
- anode
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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
-
- 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
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Abstract
The utility model discloses a kind of Wrapping type power cells comprising: battery core body, the battery core body include: serpentine positive plate, diaphragm and negative electrode tab；The positive plate includes: plus plate current-collecting body and the anode sizing agent coated on plus plate current-collecting body, and every layer of plus plate current-collecting body first end, which is all cut, is formed with the internal tab of an anode；The negative electrode tab includes: negative current collector and the negative electrode slurry coated on negative current collector, and every layer of negative current collector second end, which is all cut, is formed with tab inside cathode.Wrapping type power cell provided by the utility model, so that tab is due to placing in the opposite direction inside the internal tab of anode and cathode, it can be obtained by cutting, and then while so that battery core body is had the advantages that laminated power battery small resistance, additionally it is possible to which there is the high efficiency of tradition Wrapping type power cell.
Description
Technical field
The utility model relates to power battery technology field more particularly to a kind of Wrapping type power cells.
Background technique
Lithium-ion-power cell has a wide range of applications in new energy field, for example stores up in electric car, new energy
The fields such as energy station.
Battery core generally passes through winding method in lithium-ion-power cell in the prior art or laminated layer method is made.Wherein, it rolls up
The battery structure of winding production is simple, and high production efficiency only needs a positive plate and a negative electrode tab, battery specific energy big；And
The disadvantage is that: pole piece is long, and the internal resistance of cell is big, is unfavorable for being large current discharge, specific power is small.The battery of laminated layer method production, advantage exist
In: pole piece is short, and the internal resistance of cell is relatively small, is conducive to high current charge-discharge；And the disadvantage is that: battery pole piece is more, generates rim charge
More, production efficiency is low.
Therefore, although the laminated power battery internal resistance of cell is smaller, be conducive to be large current discharge, since structure limits,
It needs to be overlapped in layer, so that production efficiency is lower.
As it can be seen that the existing technology needs to be improved and developed.
Utility model content
In view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of Wrapping type power cell, purports
It needs to be overlapped from level to level solving laminated power battery in the prior art, the lower problem of production efficiency.
The technical solution of the utility model is as follows:
A kind of Wrapping type power cell comprising: battery core body, the battery core body include: serpentine positive plate,
Diaphragm and negative electrode tab；The positive plate includes: plus plate current-collecting body and the anode sizing agent coated on plus plate current-collecting body, every layer of anode
Collector first end, which is all cut, is formed with the internal tab of an anode；The negative electrode tab includes: negative current collector and is coated on negative
The negative electrode slurry of pole collector, every layer of negative current collector second end, which is all cut, is formed with tab inside cathode.
Further, the Wrapping type power cell further include: cathode metal item, positive sealant layer and the external pole of anode
Ear；The cathode metal item is fixedly connected with one in the internal tab of multiple anodes, and in cathode metal item and all anodes
The side of portion's tab is all bonded；The external tab of anode is connected with positive internal tab, and the anode sealant layer is located at
On the outside of positive external tab and anode internal tab junction.
Further, the cathode metal item includes: the first anode being fixedly connected on the internal tab of outermost anode
Batten, perpendicular to the described first positive batten the second positive batten, perpendicular to the described second positive batten and with the first anode
The parallel third anode batten of batten, perpendicular to the third anode batten and the 4th positive article parallel with the second positive batten
Plate and perpendicular to the 4th positive batten and with the first positive batten of positive batten the symmetrically arranged 5th, the 5th anode article
Plate and the first positive batten are connected to the internal tab of same anode；The second positive batten and the 4th positive batten respectively with institute
The two sides for stating tab inside anode fit.
Further, the Wrapping type power cell further include: negative metal item, cathode sealant layer and negative outer pole
Ear；The negative metal item is fixedly connected with one in tab inside multiple cathode, and in negative metal item and all cathode
The side of portion's tab is all bonded；The negative outer tab is connected with tab inside cathode, and the cathode sealant layer is located at
Inside negative outer tab and cathode on the outside of tab junction.
Further, the negative metal item includes: the first cathode being fixedly connected on inside outermost cathode on tab
Batten, perpendicular to the first cathode batten the second cathode batten, perpendicular to the second cathode batten and with the first cathode
The parallel third cathode batten of batten, perpendicular to the third cathode batten and fourth cathode article parallel with the second cathode batten
Plate and perpendicular to the 4th cathode batten and with the symmetrically arranged 5th cathode batten of the first cathode batten, the 5th cathode article
Plate and the first cathode batten are connected to tab inside same cathode；The second cathode batten and the 4th cathode batten respectively with institute
The two sides for stating tab inside cathode fit.
Further, the Wrapping type power cell further include: the first aluminum plastic film and the second aluminum plastic film, first plastic-aluminum
Film and the second aluminum plastic film press to form battery case.
Further, first aluminum plastic film is identical as the second aluminum plastic film shape, and the two is all in five bandings gear upper opening
Hollow rectangle, and the first aluminum plastic film lower end surface be outward extended with film encapsulation side, the second aluminum plastic film upper surface is outward extended with
Lower film encapsulates side, first aluminum plastic film and the second aluminum plastic film by upper film encapsulate while and when lower film encapsulation press connection.
Further, the positive sealant layer and cathode sealant layer be all located at film encapsulation while and lower film encapsulate while it
Between；And positive sealant layer is corresponding with one in two short sides of battery case, cathode sealant layer then with battery case two
Another in a short side is corresponding.
Further, the cathode metal item is copper bar.
Further, the plus plate current-collecting body is aluminium foil, and negative current collector is copper foil.
Compared with prior art, Wrapping type power cell provided by the utility model, it is described due to using battery core body
Battery core body includes: serpentine positive plate, diaphragm and negative electrode tab；The positive plate includes: plus plate current-collecting body and coating
In the anode sizing agent of plus plate current-collecting body, every layer of plus plate current-collecting body first end, which is all cut, is formed with the internal tab of an anode；It is described negative
Pole piece includes: negative current collector and the negative electrode slurry coated on negative current collector, and every layer of negative current collector second end is all cut
It is formed with tab inside cathode.So that tab can pass through due to placing in the opposite direction inside the internal tab of anode and cathode
While cutting and obtain, and then battery core body is made to have the advantages that laminated power battery small resistance, additionally it is possible to conventional roll around
The high efficiency of formula power battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram at the first visual angle of battery core body in the utility model power battery preferred embodiment.
Fig. 2 is the structural schematic diagram at the second visual angle of battery core body in the utility model power battery preferred embodiment.
Fig. 3 is the structural schematic diagram of the utility model power battery preferred embodiment.
Fig. 4 is the structural schematic diagram in the utility model power battery preferred embodiment after positive plate expansion.
Fig. 5 is the structural schematic diagram in the utility model power battery preferred embodiment after negative electrode tab expansion.
Specific embodiment
The utility model provides a kind of power battery production method and power battery, to make the purpose of this utility model, skill
Art scheme and effect are clearer, clear, referring to the drawings and give an actual example to the utility model further description.It should
Understand, specific embodiment described herein is only used to explain the utility model, is not used to limit the utility model.
As shown in Figures 1 and 2, the utility model provides a kind of power battery, and the power battery includes: battery core sheet
Body, the battery core body include: serpentine positive plate, diaphragm and negative electrode tab；The positive plate includes: plus plate current-collecting body
(plus plate current-collecting body is overlapped with anode sizing agent 115, and is covered by anode sizing agent 115, therefore do not indicate) and it is coated on anode
The anode sizing agent 115 of collector, as shown in Figure 4；Every layer of plus plate current-collecting body first end, which is all cut, is formed with the internal tab of an anode
111；The negative electrode tab includes: that (negative current collector is overlapped negative current collector with negative electrode slurry 125, and is covered by negative electrode slurry 125
Lid, therefore do not indicate) and negative electrode slurry 125 coated on negative current collector, as shown in Figure 5；Every layer of negative current collector second
End all cuts and is formed with tab 121 inside cathode.The plus plate current-collecting body is aluminium foil, and negative current collector is copper foil.
In the utility model further preferred embodiment, the power battery further include: cathode metal item 112, just
Pole sealant layer 114 and the external tab 113 of anode；The cathode metal item 112 and one in the internal tab 111 of multiple anodes
It is fixedly connected, and cathode metal item 112 is all bonded with the side of the internal tab 111 of all anodes；The external tab 113 of anode
It is connected with tab 111 inside anode, the anode sealant layer 114 is located at the external tab 113 of anode and the internal tab of anode
On the outside of 111 junctions.
When it is implemented, the cathode metal item 112 includes: to be fixedly connected on the internal tab 111 of outermost anode
First positive batten, perpendicular to the described first positive batten the second positive batten, perpendicular to the described second positive batten and with
The parallel third anode batten of first positive batten, perpendicular to the third anode batten and parallel with the second positive batten the
Four positive battens and perpendicular to the 4th positive batten and with the first positive batten of positive batten the symmetrically arranged 5th, described the
Five positive battens and the first positive batten are connected to the internal tab 111 of same anode；Described second positive batten and the 4th anode
Two sides of the batten respectively with the internal tab 111 of the anode fit.
In addition to this, the power battery further include: negative metal item 122, cathode sealant layer 124 and negative outer pole
Ear 123；The negative metal item 122 is fixedly connected with one in tab 121 inside multiple cathode, and negative metal item 122
It is all bonded with the side of tab 121 inside all cathode；The negative outer tab 123 is connected with tab 121 inside cathode,
The cathode sealant layer 124 is located inside negative outer tab 123 and cathode on the outside of 121 junction of tab.
Positive internal tab 111 is for pooling together the electric current on positive plate, and tab 121 will be for that will bear inside cathode
Electric current on pole piece pools together；Positive external tab 113 and negative outer tab 123 are referred to as external tab, described outer
Portion's tab is extracted for electric current from inside battery.
Identical as 112 shape of cathode metal item, the negative metal item 122 includes: to be fixedly connected on outermost to bear
The first cathode batten on extremely internal tab 121, perpendicular to the second cathode batten of the first cathode batten, perpendicular to described
Second cathode batten and the third cathode batten parallel with the first cathode batten, perpendicular to the third cathode batten and with second
The 4th parallel cathode batten of cathode batten and perpendicular to the 4th cathode batten and with the first cathode batten symmetrically arranged the
Five cathode battens, the 5th cathode batten and the first cathode batten are connected to tab 121 inside same cathode；Described second is negative
The two sides of pole batten and the 4th cathode batten respectively with tab 121 inside the cathode fit.The cathode metal item 112
And negative metal item 122 is all preferably copper bar.
As shown in figure 3, in the utility model further preferred embodiment, the power battery further include: the first aluminium
Plastic film 210 and the second aluminum plastic film 220, first aluminum plastic film 210 and the pressing of the second aluminum plastic film 220 form battery case.It is described
First aluminum plastic film 210 is identical as 220 shape of the second aluminum plastic film, and the two is all in the hollow rectangle of five bandings gear upper opening, and the
One aluminum plastic film, 210 lower end surface is outward extended with upper casing encapsulation side, and 220 upper surface of the second aluminum plastic film is outward extended with lower casing encapsulation
Side, first aluminum plastic film 210 and the second aluminum plastic film 220 by upper casing encapsulate while and lower casing encapsulate while press connection.It is described just
Pole sealant layer 114 and cathode sealant layer 124 are all located at upper casing and encapsulate between in lower casing encapsulation；And positive sealant layer
114 is corresponding with one in two short sides of battery case, cathode sealant layer 124 then with it is another in two short sides of battery case
One corresponding.
Power battery power battery production method as described below obtains, and the power battery production method includes:
S100, it is coated with anode sizing agent and remains the positive plate for having the first blank collector, diaphragm and be coated with negative
Pole slurry and it is remaining there is the negative electrode tab of the second blank collector to be successively bonded, the first blank collector and the second blank afflux
Body is contrary.
S200, the positive plate being successively bonded, diaphragm and negative electrode tab are wound.
S300, the two corners of the first blank collector and the second blank collector after winding are removed respectively, it will be remaining more
A first blank collector is all used as the internal tab of anode, and remaining multiple second blank collectors are all used as inside cathode
Tab uses.
Further, after the S300 further include: S400, any in the internal tabs of outermost two anodes
Cathode metal item is fixedly connected on one, the cathode metal strip and position are as described in above-mentioned Installation practice.
Further, after the S400 further include: S500, glued in cathode metal item and the internal tab junction of anode
Tab outside anode is connect, to form positive pole ear.
It is preferred that after the S300 further include: S600, any one in tab inside outermost two cathode
Negative metal item is fixedly connected on a, the negative metal strip and position are as described in above-mentioned Installation practice.
After S600 further include: S700, in negative metal item negative outer tab Nian Jie with tab junction inside cathode,
To form negative lug.
Herein it should be noted that the step of S400 and S600 in no particular order, no matter which first carries out, or simultaneously into
Row, does not affect power battery structure and performance.
The battery body, which is packed, to be formed the process of power battery and includes:
Multiple first grooves and the second groove are processed respectively on the first aluminum plastic film and the second aluminum plastic film in long strip；
Battery core body after formation positive pole ear and internal tab is placed in the first groove；
The back-off of second aluminum plastic film is placed on above the first aluminum plastic film and carries out hot-pressing, edge-sealing, is formed placed side by side multiple
Power battery.
Further, described that the back-off of second aluminum plastic film is placed on above the first aluminum plastic film and carries out hot-pressing, edge-sealing, it is formed
It is further comprised the steps of: after multiple power batteries placed side by side
The multiple power batteries for being formed by placed side by side are cut, flexible packaging power battery is obtained.
Further, the cathode metal item is with a thickness of ten times to 100 times of positive internal phone thickness.
Further, the negative metal item is with a thickness of ten times to 100 times of cathode internal phone thickness.
It should be understood that the application of the utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
It says, it can be modified or changed according to the above description, and all these modifications and variations all should belong to the appended power of the utility model
The protection scope that benefit requires.
Claims (10)
1. a kind of Wrapping type power cell characterized by comprising battery core body, the battery core body include: serpentine
Positive plate, diaphragm and negative electrode tab；The positive plate includes: plus plate current-collecting body and the anode sizing agent coated on plus plate current-collecting body,
Every layer of plus plate current-collecting body first end, which is all cut, is formed with the internal tab of an anode；The negative electrode tab include: negative current collector and
Negative electrode slurry coated on negative current collector, every layer of negative current collector second end, which is all cut, is formed with tab inside cathode.
2. Wrapping type power cell according to claim 1, which is characterized in that the Wrapping type power cell further include:
Cathode metal item, positive sealant layer and the external tab of anode；One in the cathode metal item and the internal tab of multiple anodes
It is a to be fixedly connected, and cathode metal item is all bonded with the side of the internal tab of all anodes；The external tab of anode and anode
Internal tab is connected, and the anode sealant layer is located on the outside of the external tab of anode and anode internal tab junction.
3. Wrapping type power cell according to claim 2, which is characterized in that the cathode metal item includes: fixed company
Connect the first positive batten on the internal tab of outermost anode, perpendicular to the described first positive batten the second positive batten,
Perpendicular to the described second positive batten and the third anode batten parallel with the first positive batten, perpendicular to the third anode item
Plate and the fourth positive batten parallel with the second positive batten and perpendicular to the 4th positive batten and with the first anode batten pair
Claim the 5th positive batten of setting, the described 5th positive batten and the first positive batten are connected to the internal tab of same anode；Institute
The two sides of the second positive batten and the 4th positive batten respectively with the internal tab of the anode are stated to fit.
4. Wrapping type power cell according to claim 3, which is characterized in that the Wrapping type power cell further include:
Negative metal item, cathode sealant layer and negative outer tab；One in the negative metal item and multiple cathode inside tab
It is a to be fixedly connected, and negative metal item is all bonded with the side of tab inside all cathode；The negative outer tab and cathode
Internal tab is connected, and the cathode sealant layer is located inside negative outer tab and cathode on the outside of tab junction.
5. Wrapping type power cell according to claim 4, which is characterized in that the negative metal item includes: fixed company
Connect the first cathode batten inside the outermost cathode on tab, perpendicular to the first cathode batten the second cathode batten,
Perpendicular to the second cathode batten and the third cathode batten parallel with the first cathode batten, perpendicular to the third cathode item
Plate and the fourth cathode batten parallel with the second cathode batten and perpendicular to the 4th cathode batten and with the first cathode batten pair
Claim the 5th cathode batten of setting, the 5th cathode batten and the first cathode batten are connected to tab inside same cathode；Institute
The two sides of the second cathode batten and the 4th cathode batten respectively with tab inside the cathode are stated to fit.
6. Wrapping type power cell according to claim 5, which is characterized in that the Wrapping type power cell further include:
First aluminum plastic film and the second aluminum plastic film, first aluminum plastic film and the second aluminum plastic film press to form battery case.
7. Wrapping type power cell according to claim 6, which is characterized in that first aluminum plastic film and the second aluminum plastic film
Shape is identical, and the two is all in the hollow rectangle of five bandings gear upper opening, and the first aluminum plastic film lower end surface is outward extended with film
Side is encapsulated, the second aluminum plastic film upper surface is outward extended with lower film encapsulation side, and first aluminum plastic film passes through upper with the second aluminum plastic film
Film encapsulation while and lower film encapsulate while press connection.
8. Wrapping type power cell according to claim 7, which is characterized in that the anode sealant layer and cathode sealing
Glue-line is all located at film and encapsulates between in lower film encapsulation；And one in positive sealant layer and two short sides of battery case
It is corresponding, cathode sealant layer then in two short sides of battery case another is corresponding.
9. Wrapping type power cell according to claim 2, which is characterized in that the cathode metal item is copper bar.
10. Wrapping type power cell according to claim 1, which is characterized in that the plus plate current-collecting body is aluminium foil, cathode
Collector is copper foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820450945.7U CN208226026U (en) | 2018-04-02 | 2018-04-02 | Wrapping type power cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820450945.7U CN208226026U (en) | 2018-04-02 | 2018-04-02 | Wrapping type power cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208226026U true CN208226026U (en) | 2018-12-11 |
Family
ID=64505020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820450945.7U Expired - Fee Related CN208226026U (en) | 2018-04-02 | 2018-04-02 | Wrapping type power cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208226026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428947A (en) * | 2018-04-02 | 2018-08-21 | 范能文 | Wrapping type power cell |
-
2018
- 2018-04-02 CN CN201820450945.7U patent/CN208226026U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428947A (en) * | 2018-04-02 | 2018-08-21 | 范能文 | Wrapping type power cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20181211 Termination date: 20190402 |