CN209150221U - A kind of electrode plates and battery core - Google Patents
A kind of electrode plates and battery core Download PDFInfo
- Publication number
- CN209150221U CN209150221U CN201822056639.8U CN201822056639U CN209150221U CN 209150221 U CN209150221 U CN 209150221U CN 201822056639 U CN201822056639 U CN 201822056639U CN 209150221 U CN209150221 U CN 209150221U
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- China
- Prior art keywords
- electrode plates
- battery core
- diaphragm
- utility
- end edge
- Prior art date
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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 belongs to technical field of lithium ion more particularly to a kind of electrode plates, including first side and end edge, and at least one end edge of electrode plates is equipped with tab, and the first side of the electrode plates is indent arc side；The radian of the indent arc side is 5 ° ~ 45 °.Compared with the existing technology, the utility model makes the burr of electrode plates female parts no longer contact diaphragm, reduces the contact area of burr and diaphragm on electrode plates edge by setting indent arc side for the straight flange in electrode plates；Therefore when carrying out lamination process, the probability that short circuit occurs for positive/negative plate is reduced；And zero electric ratio of battery core is reduced, to improve the security performance and product quality of battery core；Guarantor's liquid measure that battery core electrolyte inside can be improved simultaneously, reduces the internal temperature rise of battery core when in use, improves the properties of product and service life of battery core.
Description
Technical field
The utility model belongs to technical field of lithium ion more particularly to a kind of electrode plates and battery core.
Background technique
With the development of modern society and the enhancing of people's environmental consciousness, more and more equipment select using lithium battery as
Power supply, such as mobile phone, laptop, electric tool and electric car, this is provided extensively for the application of lithium battery with development
Wealthy space.
In existing laminated battery plate, the electrode plates of battery core are rectangular pole piece, and the side of pole piece is straight flange, are being carried out
Pole piece can generate the burr of a large amount of lateral projections at the straight flange edge of rectangular pole piece during being die cut.Carrying out lamination process
In, when being involved in and tightening diaphragm, the burr at electrode plates straight flange edge can pierce through diaphragm, cause positive/negative plate that short circuit occurs, make
At battery core short circuit；Therefore a kind of embodiment that can be reduced pole piece burrs on edges and membrane contacts is needed.
Utility model content
One of the purpose of this utility model is: in view of the deficiencies of the prior art, and a kind of electrode plates is provided, to solve
Existing electrode plates burrs on edges pierces through the problem of diaphragm.
To achieve the goals above, the utility model uses following technical scheme:
A kind of electrode plates, including first side and end edge, at least one end edge of electrode plates is equipped with tab, described
The first side of electrode plates is indent arc side；The radian of the indent arc side is 5 ° ~ 45 °.
As the preferred embodiment of electrode plates described in the utility model, the end edge of the electrode plates is indent arc side.
As the preferred embodiment of electrode plates described in the utility model, the indent of the indent arc side away from for 0.5 ~ 4mm,
More preferably 2mm.
As the preferred embodiment of electrode plates described in the utility model, the radian of the indent arc side is 20 ° ~ 30 °, more
Preferably 25 °.
As the preferred embodiment of electrode plates described in the utility model, the first side and end edge are at the first arc
Angle.
As the preferred embodiment of electrode plates described in the utility model, the radius of first arc angle is 2 ~ 7mm, more
Preferably 5mm.
As the preferred embodiment of electrode plates described in the utility model, the second side of the tab and end edge are at second
Arc angle.
As the preferred embodiment of electrode plates described in the utility model, the radius of second arc angle is 0.5 ~ 3mm,
More preferably 2mm.
As the preferred embodiment of electrode plates described in the utility model, the main part bilateral symmetry of the electrode plates
And/or it is symmetrical above and below.
Compared with the existing technology, one of the utility model aim has the advantages that
1) the utility model makes electrode plates female parts by setting indent arc side for the straight flange in electrode plates
Burr no longer contacts diaphragm, reduces the contact area of burr and diaphragm on electrode plates edge；Therefore lamination process is being carried out
When, reduce the probability that short circuit occurs for positive/negative plate；And zero electric ratio of battery core is reduced, to improve the security performance of battery core
And product quality；
2) the utility model is by setting indent arc side for the straight flange in electrode plates, after forming battery core, indent
Part will form an interior concave space, make battery core when carrying out fluid injection process, and the amount for injecting electrolyte can increase, and improve finished product electricity
The electrolyte of core inner protects liquid measure, improves the performance of battery core；The interior concave space can increase the heat-dissipating space inside battery core simultaneously, have
Help reduce temperature rise of the battery core in charge and discharge, especially temperature rise of the reduction battery core in high rate charge-discharge improves battery core
Service life.
The two of the purpose of this utility model are to provide a kind of battery core, including electrode plates, diaphragm and setting in electrode pole
The tab of piece, the electrode plates are electrode plates described in any of the above-described section.
The twos' of the utility model aim has the beneficial effect that the utility model by the way that the electrode pole is arranged in battery core
Piece can be reduced zero electric ratio of battery core, improve the security performance of battery core；Guarantor's liquid measure of battery core electrolyte inside can be improved simultaneously,
The internal temperature rise of battery core when in use is reduced, the properties of product and service life of battery core are improved.
Detailed description of the invention
Fig. 1 is one of preferred embodiment in embodiment 1.
Fig. 2 is two of preferred embodiment in embodiment 1.
Fig. 3 is three of preferred embodiment in embodiment 1.
Fig. 4 is the structural schematic diagram of embodiment 2.
In figure: 1- electrode plates；The first side 11-；12- end edge；The first arc angle of 13-；2- tab；The second side 21-；
The second arc angle of 22-；3- diaphragm.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, below in conjunction with specific embodiment and specification
Attached drawing is described in further detail the utility model and its advantages, but the embodiments of the present invention is not limited to
This.
Embodiment 1
Such as Fig. 1 ~ 3, a kind of electrode plates 1, including first side 11 and end edge 12,1 at least one end edge 12 of electrode plates
Equipped with tab 2, the first side 11 of electrode plates 1 is indent arc side；The radian of indent arc side is 5 ° ~ 45 °.
First, the utility model makes 1 indent of electrode plates by setting indent arc side for the straight flange in electrode plates 1
Partial burr no longer contacts diaphragm 3, reduces the contact area of burr and diaphragm 3 on 1 edge of electrode plates；Therefore it is carrying out
When lamination process, the probability that short circuit occurs for positive/negative plate is reduced；And zero electric ratio of battery core is reduced, to improve battery core
Security performance and product quality.
Second, the utility model is interior after forming battery core by setting indent arc side for the straight flange in electrode plates 1
Recessed part will form an interior concave space, make battery core when carrying out fluid injection process, and the amount for injecting electrolyte can increase, improve at
Electrolyte inside product battery core protects liquid measure, improves the performance of battery core；The interior concave space can increase the sky of the heat dissipation inside battery core simultaneously
Between, help to reduce temperature rise of the battery core in charge and discharge, especially temperature rise of the reduction battery core in high rate charge-discharge improves
The service life of battery core.
Preferably, the end edge 12 of electrode plates 1 is indent arc side.According to the actual situation and production requirement, by electrode plates 1
Straight flange be set as corresponding indent arc side.By above-mentioned setting, it is further reduced burr on electrode plates 1 and is contacted with diaphragm 3
Area, while also increasing the interior concave space after forming battery core, improve the guarantor's liquid measure and heat-sinking capability of battery core.
Preferably, the indent of indent arc side is away from for 0.5 ~ 4mm, more preferably 2mm.If indent away from excessive, can reduce battery core
Energy density, but also will affect the appearance of battery core finished product, if indent away from too small, can not be reduced on 1 edge of electrode plates
The contact area of burr and diaphragm 3.By above-mentioned setting, reduce the contact area of electrode plates 1 burr and diaphragm 3；And it drops
The electric ratio of the zero of low battery core, improves the security performance and product quality of battery.
Preferably, the radian of indent arc side is 20 ° ~ 30 °, more preferably 25 °.If the radian of indent arc side is excessive, can drop
The energy density of low battery core, but also will affect the appearance of battery core finished product, it is easy that diaphragm is made to invaginate；If the radian mistake of indent arc side
It is small, then it can not reduce the contact area of burr and diaphragm 3 on 1 edge of electrode plates.By above-mentioned setting, reduce electrode plates
The contact area of 1 burr and diaphragm 3；And zero electric ratio of battery core is reduced, improve the security performance and product quality of battery.
Preferably, first side 11 and end edge 12 are at the first arc angle 13.By above-mentioned setting, electrode plates 1 can be made
On wedge angle become arc angle, avoid the electrode plates 1 in lamination process wedge angle pierce through diaphragm 3；It is further reduced simultaneously
The area that burr is contacted with diaphragm 3 on electrode plates 1；And zero electric ratio of battery core is reduced, improve the security performance of battery
And product quality.
Preferably, the radius of the first arc angle 13 is 2 ~ 7mm, more preferably 5mm.According to the actual situation and production requirement,
Select suitable radius value；According to the actual situation and production requirement, suitable radius value is selected.If the radius of the first arc angle 13
It is excessive, the energy density of battery core can be reduced；If the radius of the first arc angle 13 is excessive, can not reduce on 1 edge of electrode plates
The contact area of burr and diaphragm 3.By above-mentioned setting, reduce the contact area of electrode plates 1 burr and diaphragm 3；And it drops
The electric ratio of the zero of low battery core, improves the security performance and product quality of battery.
Preferably, the second side 21 of tab 2 and end edge 12 are at the second arc angle 22.On laminated cell, on tab 2
Part edge can also be contacted with diaphragm 3, and 12 edge of end edge equally exists burr.By above-mentioned setting, 12 edge of end edge can be reduced
The contact area of burr and diaphragm 3；And zero electric ratio of battery core is reduced, improve the security performance and product quality of battery.
Preferably, the radius of the second arc angle 22 is 0.5 ~ 3mm, more preferably 2mm.It is wanted according to the actual situation with production
It asks, selects suitable radius value；If the radius of the second arc angle 22 and third arc angle is excessive, the intensity of tab 2 can be reduced, is made
Tab 2 is easily broken off；If indent away from too small, can not reduce the contact area of burr and diaphragm 3 on 1 edge of electrode plates.It is logical
Above-mentioned setting is crossed, the contact area of electrode plates 1 burr and diaphragm 3 is reduced；And zero electric ratio of battery core is reduced, it improves
The security performance and product quality of battery.
Preferably, the main part of electrode plates 1 is symmetrically and/or symmetrical above and below.Pass through above-mentioned setting, electrode plates
1 symmetrical configuration is beautiful, guarantees that the shape of electrode plates 1 is identical, and be readily produced, improves the production efficiency of electrode plates 1.
Embodiment 2
As shown in figure 4, a kind of battery core, including electrode plates 1, diaphragm 3 and the tab 2 that electrode plates 1 are arranged in, electrode
Pole piece 1 is the electrode plates 1 in embodiment 1.
The utility model can be reduced zero electric ratio of battery core, improve the peace of battery core by the way that electrode plates 1 are arranged in battery core
Full performance；Guarantor's liquid measure that battery core electrolyte inside can be improved simultaneously reduces the internal temperature rise of battery core when in use, improves battery core
Properties of product and service life.
Wherein, although battery core memory is in interior concave space, by cooperating with multiple first arc angles 13 of electrode plates 1,
Diaphragm 3 can be supported by multiple first arc angles 13, and diaphragm 3 will not invaginate.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to above-mentioned specific embodiment, all this field skills
It is practical new that art personnel any conspicuous improvement made on the basis of the utility model, replacement or modification belong to this
The protection scope of type.In addition, these terms are intended merely to facilitate although using some specific terms in this specification
It is bright, any restrictions are not constituted to the utility model.
Claims (10)
1. a kind of electrode plates, it is characterised in that: including first side and end edge, at least one end edge of electrode plates is equipped with
Tab, the first side of the electrode plates are indent arc side；The radian of the indent arc side is 5 ° ~ 45 °.
2. electrode plates according to claim 1, it is characterised in that: the end edge of the electrode plates is indent arc side.
3. electrode plates according to claim 1, it is characterised in that: the indent of the indent arc side is away from for 0.5 ~ 4mm.
4. electrode plates according to claim 1, it is characterised in that: the radian of the indent arc side is 20 ° ~ 30 °.
5. electrode plates according to claim 1, it is characterised in that: the first side and end edge are at the first arc angle.
6. electrode plates according to claim 5, it is characterised in that: the radius of first arc angle is 2 ~ 7mm.
7. electrode plates according to claim 1, it is characterised in that: the second side of the tab and end edge are at the second arc
Shape angle.
8. electrode plates according to claim 7, it is characterised in that: the radius of second arc angle is 0.5 ~ 3mm.
9. electrode plates according to claim 1, it is characterised in that: the main part bilateral symmetry of the electrode plates
And/or it is symmetrical above and below.
10. a kind of battery core, including electrode plates, diaphragm and the tab that electrode plates are arranged in, it is characterised in that: the electrode
Pole piece is the described in any item electrode plates of claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056639.8U CN209150221U (en) | 2018-12-07 | 2018-12-07 | A kind of electrode plates and battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056639.8U CN209150221U (en) | 2018-12-07 | 2018-12-07 | A kind of electrode plates and battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209150221U true CN209150221U (en) | 2019-07-23 |
Family
ID=67289527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822056639.8U Expired - Fee Related CN209150221U (en) | 2018-12-07 | 2018-12-07 | A kind of electrode plates and battery core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209150221U (en) |
-
2018
- 2018-12-07 CN CN201822056639.8U patent/CN209150221U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20201207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |