CN214152938U - Pole piece, battery and battery module - Google Patents
Pole piece, battery and battery module Download PDFInfo
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- CN214152938U CN214152938U CN202022551507.XU CN202022551507U CN214152938U CN 214152938 U CN214152938 U CN 214152938U CN 202022551507 U CN202022551507 U CN 202022551507U CN 214152938 U CN214152938 U CN 214152938U
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- pole piece
- battery
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- tape
- insulating
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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
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Abstract
The utility model relates to the technical field of batteries, in particular to a pole piece, a battery and a battery module, wherein the pole piece comprises a current collector, an electrode coating and an insulating adhesive tape; the current collector has a coated region and a non-coated region; the electrode coating covers the coating area and is provided with an active substance; the insulating tape is adhered to the boundary position of the coating area and the non-coating area of the current collector. Through the structure design, the utility model provides a pole piece can utilize the better characteristics of the edge uniformity of insulating sticky tape, guarantees that insulating sticky tape is close to in or covers in electrode coating's edge, avoids the dew paper tinsel problem that probably produces in the process of dripping of current technology and scribbling utmost point ear glue to improve the security and the reliability of battery.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a pole piece, battery and battery module.
Background
In the manufacturing and assembling process of the battery, the positive pole piece of the battery needs to be coated with the insulating glue, so that when the positive pole piece moves relative to the spacer due to shaking in the use process of the battery, the insulating glue and the negative pole piece on the other side of the spacer can be utilized to form insulation, and the short circuit of the battery is avoided. In the design of the existing positive pole piece, the tab glue should be attached to the active material on the pole piece, however, in the current coating process, the positive tab glue (such as ceramic slurry) and the active material of the positive pole piece are sprayed on the surface of the pole piece foil synchronously, so that the coating leakage, i.e. the phenomenon of metal leakage, is easy to occur, and thus part of the positive tab glue is not attached to the active material. In addition, the tab glue has the problems of yellowing (due to the presence of additives), particles and the like after long-term use.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at overcomes above-mentioned prior art's at least defect, provides a pole piece of avoiding appearing exposing the paper tinsel problem between utmost point ear glue and the coating district.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to one aspect of the present invention, a pole piece is provided; the pole piece comprises a current collector, an electrode coating and an insulating tape; the current collector has a coated region and a non-coated region; the electrode coating covers the coating area and is provided with an active substance; the insulating tape is adhered to the boundary position of the coating area and the non-coating area of the current collector.
According to the above technical scheme, the utility model provides an advantage and positive effect of pole piece lie in:
the utility model provides a pole piece is provided with the insulating sticky tape in the non-coating district of mass flow body and the boundary position in coating district. Through the structure design, the utility model discloses can utilize the better characteristics of edge uniformity of insulating sticky tape, guarantee insulating sticky tape next-door neighbour in or cover in electrode coating's edge, avoid the dew paper tinsel problem that probably produces in the process of drip coating utmost point ear gum of current technology to improve the security and the reliability of battery.
Another primary object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery having the above-mentioned electrode plate.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to an aspect of the present invention, there is provided a battery; wherein, the battery contains the utility model provides a pole piece.
According to the above technical scheme, the utility model provides an advantage and positive effect of battery lie in:
the utility model provides a battery, through adopting the utility model provides a pole piece when the battery produces in the use and rocks and make pole piece and spacer produce relative displacement, the insulating sticky tape that utilizes the pole piece forms insulatedly between the pole piece of spacer both sides. Through the structure design, the utility model provides a battery can avoid leading to utmost point ear displacement to produce the short circuit because of rocking to improve the security and the reliability of battery.
Another main object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a battery module having the above-mentioned pole piece.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to one aspect of the present invention, a battery module is provided; wherein, the battery module contains the utility model provides a pole piece.
According to the above technical scheme, the utility model provides a battery module's advantage lies in with positive effect:
the utility model provides a battery module, through adopting the utility model provides a pole piece, when battery module produced in the use and rocked and make pole piece and spacer produce relative displacement, the insulating sticky tape that utilizes the pole piece formed insulating between the pole piece of spacer both sides. Through the structure design, the utility model provides a battery module can avoid producing the short circuit because of rocking to lead to utmost point ear displacement to improve battery module's security and reliability.
Drawings
The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
FIG. 1 is a schematic diagram illustrating the structure of a pole piece according to an exemplary embodiment;
FIG. 2 is a partial cross-sectional view of the pole piece shown in FIG. 1;
FIG. 3 is a partial cross-sectional view of one of the pole pieces shown in accordance with another exemplary embodiment;
FIG. 4 is a partial cross-sectional view of one of the pole pieces shown in accordance with another exemplary embodiment;
FIG. 5 is a partial cross-sectional view of one pole piece shown according to another exemplary embodiment.
The reference numerals are explained below:
100. a current collector;
110. coating an electrode;
120. an insulating tape;
D1. a coating zone;
D2. a non-coated region.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.
Referring to fig. 1, a schematic structural diagram of a pole piece provided by the present invention is representatively shown. In this exemplary embodiment, the present invention provides a pole piece that is exemplified by a positive pole piece applied to a battery. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the inventive concepts described herein to other types of batteries or other devices, and such changes are within the scope of the pole piece principles set forth herein.
As shown in fig. 1, in the present embodiment, the present invention provides a pole piece including a current collector 100, an electrode coating 110, and an insulating tape 120. Referring to fig. 2, a partial cross-sectional view of a pole piece 100 that can embody principles of the present invention is representatively illustrated in fig. 2, which particularly shows a cross-sectional view generally corresponding to line a-a of fig. 1. The structure, connection mode and functional relationship of the main components of the pole piece provided by the present invention will be described in detail below with reference to the above drawings.
As shown in fig. 1 and 2, in the present embodiment, the current collector 100 has a coated region D1 and a non-coated region D2. The electrode coating 110 covers the coating region D1 and has an active material. The insulating tape 120 is adhered to the interface of the coated region D1 and the non-coated region D2 of the current collector 100. Through the structure design, the utility model provides a pole piece can utilize the better characteristics of the edge uniformity of insulating adhesive tape 120, guarantees that insulating adhesive tape 120 is close to in or covers in the edge of electrode coating 110, avoids the dew paper tinsel problem that probably produces in the process of dripping coating utmost point ear gum of current technology to improve the security and the reliability of battery. And simultaneously, the utility model provides a pole piece can also utilize insulating property of insulating adhesive tape 120 to provide insulating function between pole piece and spacer. The utility model discloses an insulating tape 120 adhesion of being convenient for, it is convenient to have the engineering realization, low cost, and density compares in the lower advantage of ceramic system's utmost point ear glue, is favorable to promoting product quality energy density. In addition, the adhesive force performance of the insulating tape 120 is stable, which is beneficial to avoiding the phenomena of discoloration, falling off and the like of the tab glue when the tab glue is soaked by the electrolyte.
Alternatively, in the present embodiment, the insulating tape may be a double-sided tape. Specifically, the double-sided tape may be adhered to the current collector 100 with one side surface thereof having adhesiveness and the other side surface thereof having adhesiveness facing away from the current collector 100. Through the structure design, when utilizing double-sided tape adhesion to collect the fluid 100 and provide the function of avoiding revealing the paper tinsel, the utility model provides a pole piece can also utilize this opposite side surface adhesion of double-sided tape in the spacer to realize the rigidity of collecting the fluid 100 and spacer, avoid the function of the relative spacer relative movement of pole piece, further promote the security and the reliability of the battery that has this pole piece.
In other embodiments, the insulating tape 120 may also be a single-sided tape, and the single-sided tape may be adhered to the current collector 100 by its own adhesive surface.
Alternatively, as shown in fig. 2, in the present embodiment, the edge of the insulating tape 120 abuts against the edge of the electrode coating 110. In other words, in the present embodiment, the structural design that the insulating tape 120 is adhered to the boundary between the coating region D1 and the non-coating region D2 of the current collector 100 means that the insulating tape 120 is adhered to the boundary between the coating region D1 and the non-coating region D2, that is, the insulating tape 120 and the electrode coating 110 are tightly bonded to each other, so as to avoid the problem of exposing the foil of the current collector 100.
Alternatively, as shown in fig. 1 and 2, in the present embodiment, the insulating tape 120 partially covers the non-coating region D2. In other words, in the present embodiment, the insulating tape 120 is covered on a portion of the non-coating region D2 adjacent to the coating region D1.
Alternatively, in the present embodiment, the base material of the insulating tape 120 may include at least one of polyethylene terephthalate (PET), Polyimide (PI), Polyethylene (PE), and Propylene Oxide (PO).
Alternatively, in the present embodiment, the adhesive material of the insulating tape 120 may include at least one of a silicone pressure sensitive adhesive and a rubber pressure sensitive adhesive.
Based on the above detailed description of an exemplary embodiment of the pole piece provided by the present invention, another exemplary embodiment of the pole piece provided by the present invention will be described below with reference to fig. 3.
As shown in fig. 3, in this embodiment, the pole piece of the present invention can adopt the same structure design as the first embodiment, except that in this embodiment, a part of the insulating tape 120 is adhered to the electrode coating layer 110. Through the structure design, the utility model provides a pole piece can utilize insulating adhesive tape 120 part to cover electrode coating 110 to further avoid revealing the production of paper tinsel problem, further optimize the security and the reliability of the battery that has this pole piece. It should be noted that fig. 3 is intended to show a schematic structure in which the insulating tape 120 partially covers the electrode coating 110, and the illustration is not intended to limit the thickness relationship of the structures.
As described above, as shown in fig. 3, in the present embodiment, a portion of the insulating tape 120 is adhered to the non-coating region D2 of the current collector 100, and another portion of the insulating tape 120 is adhered to the electrode coating 110. In other words, in the present embodiment, the structural design that "the insulating tape 120 is adhered to the boundary position between the coating region D1 and the non-coating region D2 of the current collector 100" means that the insulating tape 120 covers the boundary line between the coating region D1 and the non-coating region D2, a portion of the non-coating region D2 adjacent to the coating region D1, and a portion of the electrode coating 110 (i.e., the coating region D1) adjacent to the non-coating region D2.
Based on the above detailed description of two exemplary embodiments of the pole piece provided by the present invention, another exemplary embodiment of the pole piece provided by the present invention will be described below with reference to fig. 4.
As shown in fig. 4, in this embodiment, the pole piece of the present invention can adopt the same structure design as the first and second embodiments, except that in this embodiment, the insulating tape 120 covers the whole of the non-coating region D2. Through above-mentioned structural design, when the realization is avoided the foil to expose the phenomenon and is promoted battery security and reliability, the utility model provides a pole piece can be at the removal in-process, covers the adhesion of non-coating district D2 total areas through insulating adhesive tape 120, avoids the non-coating district of mass flow body 100 to produce the fold.
Based on the above detailed description of the three exemplary embodiments of the pole piece provided by the present invention, another exemplary embodiment of the pole piece provided by the present invention will be described below with reference to fig. 5.
As shown in fig. 5, in this embodiment, the pole piece of the present invention can adopt the same structure design as the first to third embodiments, except that in this embodiment, the insulating tape 120 covers the whole of the non-coating region D2, and a part of the insulating tape 120 is adhered to the electrode coating 110, that is, the insulating tape 120 also covers a part of the electrode coating 110 (i.e., the coating region D1).
It is noted herein that the pole pieces shown in the drawings and described in this specification are but a few examples of the many types of pole pieces that the principles of the present invention can be employed in. It should be clearly understood that the principles of the present invention are in no way limited to any details or any structure of the pole pieces shown in the drawings or described in the specification.
Based on the above detailed description of several exemplary embodiments of the pole piece provided by the present invention, an exemplary embodiment of the battery provided by the present invention will be described below.
In this embodiment, the battery provided by the present invention may include the pole piece provided by the present invention and described in detail in the above embodiments. The utility model provides a battery can avoid producing the short circuit because of rocking to lead to utmost point ear displacement to security and reliability of battery are provided.
It should be noted herein that the batteries shown in the drawings and described in the present specification are but a few examples of the many types of batteries that the principles of the present invention can be employed in. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the battery shown in the drawings or described in the specification.
Based on the above detailed description of several exemplary embodiments of the battery, which is the pole piece provided by the present invention, an exemplary embodiment of the battery module provided by the present invention will be described below.
In this embodiment, the battery module provided by the present invention may include the pole piece provided by the present invention and described in detail in the above embodiments. The utility model provides a battery module can avoid producing the short circuit because of rocking to lead to utmost point ear displacement to security and reliability of battery module are provided.
It should be noted herein that the battery modules shown in the drawings and described in the present specification are only a few examples of the many kinds of battery modules that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the battery module shown in the drawings or described in the specification.
To sum up, the utility model provides a pole piece can utilize the better characteristics of the edge uniformity of insulating sticky tape, guarantees that insulating sticky tape is close to in or covers in electrode coating's edge, avoids the dew paper tinsel problem that probably produces in the processing procedure of dripping of current technology and scribbling utmost point ear glue to improve the security and the reliability of battery.
Exemplary embodiments of a pole piece, a battery and a battery module according to the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (10)
1. A pole piece, comprising:
a current collector having a coated region and a non-coated region;
an electrode coating layer covering the coating region and having an active material; and
and the insulating tape is adhered to the boundary position of the coating area and the non-coating area of the current collector.
2. The pole piece of claim 1, wherein the insulating tape is a double-sided tape, the double-sided tape is adhered to the current collector with one side surface of the double-sided tape having adhesiveness, and the other side surface of the double-sided tape having adhesiveness faces away from the current collector.
3. The pole piece of claim 1, wherein the insulating tape is a single-sided tape, and the single-sided tape is adhered to the current collector by a surface of the single-sided tape having an adhesive property.
4. A pole piece according to any one of claims 1 to 3, wherein the insulating tape covers a partial area of the edge of the electrode coating.
5. A pole piece according to any one of claims 1 to 3, wherein the insulating tape covers a partial area of the non-coated area.
6. A pole piece as claimed in any one of claims 1 to 3, wherein the insulating tape covers the entire area of the non-coated area.
7. The pole piece according to any one of claims 1 to 3, wherein the substrate of the insulating tape is any one of polyethylene terephthalate, polyimide, polyethylene, and propylene oxide.
8. The pole piece according to any one of claims 1 to 3, wherein the adhesive material of the insulating tape is any one of silicone pressure sensitive adhesive and rubber pressure sensitive adhesive.
9. A battery comprising the electrode sheet of any one of claims 1 to 8.
10. A battery module, characterized in that, the battery module contains the pole piece of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022551507.XU CN214152938U (en) | 2020-11-06 | 2020-11-06 | Pole piece, battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022551507.XU CN214152938U (en) | 2020-11-06 | 2020-11-06 | Pole piece, battery and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214152938U true CN214152938U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022551507.XU Active CN214152938U (en) | 2020-11-06 | 2020-11-06 | Pole piece, battery and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214152938U (en) |
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2020
- 2020-11-06 CN CN202022551507.XU patent/CN214152938U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: AVIC lithium Technology Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: AVIC lithium Technology Co.,Ltd. Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: Zhongchuangxin Aviation Technology Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: AVIC lithium Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |