CN217444588U - Battery and battery pack - Google Patents
Battery and battery pack Download PDFInfo
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- CN217444588U CN217444588U CN202220383102.6U CN202220383102U CN217444588U CN 217444588 U CN217444588 U CN 217444588U CN 202220383102 U CN202220383102 U CN 202220383102U CN 217444588 U CN217444588 U CN 217444588U
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- battery
- conductive adhesive
- tab
- pole piece
- electrode
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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 a battery technology field provides a battery and group battery. The battery includes: the battery cell comprises a pole piece and a pole lug, wherein the pole lug is provided with conductive adhesive, and the conductive adhesive and the pole piece are arranged at intervals; and the electrode leading-out part is electrically connected with the lug and is in contact with the conductive adhesive. The electrode leading-out part can be connected with the pole lug and the conductive adhesive arranged on the pole lug, so that the electric connection stability of the electrode leading-out part and the pole lug is improved, and the overcurrent capacity between the electrode leading-out part and the pole lug is ensured. Because the conductive adhesive is arranged on the lug and is arranged at intervals with the pole piece, the effective electric connection between the lug and the electrode leading-out part can be ensured, and the problem of short circuit inside the battery cell caused by the conductive adhesive can be avoided, so that the performance of the battery is improved.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery and group battery.
Background
In the related technology, the battery core of the battery can be electrically connected with the pole through the current collecting disc, the tab of the battery core is welded with the current collecting disc, and the current collecting disc is welded with the pole.
Disclosure of Invention
The utility model provides a battery and group battery to improve the performance of battery.
According to a first aspect of the present invention, there is provided a battery, comprising:
the battery cell comprises a pole piece and a pole lug, wherein the pole lug is provided with conductive adhesive, and the conductive adhesive and the pole piece are arranged at intervals;
and the electrode leading-out part is electrically connected with the lug and is in contact with the conductive adhesive.
The utility model discloses battery includes electric core and electrode extraction portion, and the electrode extraction portion can be connected with utmost point ear and the conducting resin that sets up on utmost point ear to improve the electric connection stability of electrode extraction portion and utmost point ear, guarantee the ability of overflowing between electrode extraction portion and the utmost point ear with this. Because the conductive adhesive is arranged on the lug and is arranged at intervals with the pole piece, the effective electric connection between the lug and the electrode leading-out part can be ensured, and the problem of short circuit inside the battery cell caused by the conductive adhesive can be avoided, so that the performance of the battery is improved.
According to a second aspect of the present invention, there is provided a battery pack comprising the above battery.
The utility model discloses group battery includes the battery, and the battery includes electric core and electrode extraction portion, and the electrode extraction portion can be connected with utmost point ear and the conducting resin that sets up on utmost point ear to improve the electric connection stability of electrode extraction portion and utmost point ear, with this overcurrent capacity between assurance electrode extraction portion and the utmost point ear. Because the conductive adhesive is arranged on the lug and is arranged at intervals with the pole piece, the effective electric connection between the lug and the electrode leading-out part can be ensured, and the problem of short circuit inside the battery cell caused by the conductive adhesive can be avoided, so that the performance of the battery pack is improved.
Drawings
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
FIG. 1 is a schematic diagram of a battery shown in accordance with an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating the internal structure of a battery according to an exemplary embodiment;
fig. 3 is a schematic view showing an internal structure of a battery according to another exemplary embodiment;
fig. 4 is a schematic diagram illustrating an unfolded structure of a cell of a battery according to an exemplary embodiment.
The reference numerals are explained below:
10. an electric core; 11. pole pieces; 12. a tab; 13. a conductive adhesive; 14. a diaphragm; 20. a pole column; 30. a housing member; 40. a cover plate; 50. a collector plate.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.
The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.
An embodiment of the present invention provides a battery, please refer to fig. 1 to fig. 4, the battery includes: the battery cell 10 comprises a pole piece 11 and a pole lug 12, wherein a conductive adhesive 13 is arranged on the pole lug 12, and the conductive adhesive 13 and the pole piece 11 are arranged at intervals, namely the conductive adhesive 13 is not in contact with the pole piece 11; and an electrode lead-out part which is electrically connected with the tab 12 and is contacted with the conductive adhesive 13.
The utility model discloses a battery of embodiment includes electric core 10 and electrode extraction portion, and the electrode extraction portion can be connected with utmost point ear 12 and the conducting resin 13 of setting on utmost point ear 12 to improve the electric connection stability of electrode extraction portion and utmost point ear 12, guarantee the ability of overflowing between electrode extraction portion and utmost point ear 12 with this. Because the conductive adhesive 13 is arranged on the tab 12 and is arranged at an interval with the pole piece 11, the effective electric connection between the tab 12 and the electrode leading-out part can be ensured, and the problem that the conductive adhesive 13 causes the internal short circuit of the battery cell 10 can be avoided, so that the performance of the battery is improved.
The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged. The separator may be a membrane. The first electrode may include a positive electrode tab and a positive electrode tab, and the second electrode may include a negative electrode tab and a negative electrode tab. In this embodiment, the conductive adhesive 13 and the pole piece 11 are arranged at an interval, that is, the conductive adhesive 13 is only arranged on the tab 12 and does not cover the pole piece 11, for example, if the conductive adhesive 13 is arranged on the positive pole tab and covers the positive pole piece, the conductive adhesive 13 may pierce the separator and contact the negative pole piece, thereby causing a short circuit problem inside the battery cell, and the conductive adhesive 13 and the pole piece 11 are arranged at an interval in this embodiment, which can avoid causing the short circuit problem.
It should be noted that the cell may be of a cylindrical configuration. In some embodiments, it is not excluded that the battery may be a cuboid structure.
In one embodiment, as shown in fig. 4, the battery cell 10 further includes a separator 14, and the conductive adhesive 13 is disposed at a distance from the separator 14, that is, the conductive adhesive 13 is not disposed on the separator 14, so that the conductive adhesive 13 can be further prevented from puncturing the separator 14 to electrically connect the pole pieces with opposite polarities.
In some embodiments, the separator 14 may be disposed to overlap the pole piece 11, that is, the width of the separator 14 may be the same as the width of the pole piece 11, at this time, the separator 14 may not cover the tab 12, and the conductive adhesive 13 is disposed to be spaced apart from the separator 14, so that the conductive adhesive 13 may not have a problem of puncturing the separator 14, and thus, a problem of the conductive adhesive 13 conducting pole pieces with opposite polarities may be avoided.
In some embodiments, as shown in fig. 4, a portion of the tab 12 overlaps the separator 14, that is, the width of the separator 14 may be greater than the width of the pole piece 11, so that the separator 14 covers a portion of the tab 12, and the conductive adhesive 13 is spaced from the separator 14, so that the separator 14 does not cover the conductive adhesive 13, and therefore, the problem that the conductive adhesive 13 pierces the separator 14 does not occur, and the problem that the conductive adhesive 13 conducts the pole pieces with opposite polarities can be avoided.
In one embodiment, the pole piece 11 is a positive pole piece, the tab 12 is a positive pole tab, and the positive pole tab may be provided with a conductive adhesive 13, and the conductive adhesive 13 is not in contact with the positive pole piece.
In one embodiment, the pole piece 11 is a negative pole piece, the tab 12 is a negative pole tab, and the negative pole tab may be provided with a conductive adhesive 13, and the conductive adhesive 13 is not in contact with the negative pole piece.
In one embodiment, a first insulating layer is disposed between the positive electrode plate and the negative electrode tab, and a second insulating layer is disposed between the negative electrode plate and the positive electrode tab, so that accidental adhesion of the positive electrode plate and the negative electrode plate can be avoided, and thus the problem of internal short circuit of the battery cell caused by electrical connection between the positive electrode plate and the negative electrode plate is avoided.
The first insulating layer covers the part of the conductive adhesive, so that the conductive adhesive can be prevented from being accidentally bonded with the positive pole piece, the second insulating layer covers the part of the conductive adhesive, so that the conductive adhesive can be prevented from being accidentally bonded with the negative pole piece, the safety performance inside the battery can be improved, and the electrode leading-out part can be ensured to be reliably contacted with the conductive adhesive 13.
In one embodiment, the size of the negative pole piece exceeds the size of the positive pole piece, and the first insulating layer extends from at least the end part of the positive pole piece and is arranged beyond the negative pole piece, so that the negative pole piece and the positive pole piece can be prevented from being reliably insulated. The size of the negative pole piece exceeds the size of the positive pole piece, namely, the extending direction of the negative pole lug on the negative pole piece can be considered as the length direction of the negative pole piece, the extending direction of the positive pole lug on the positive pole piece can be considered as the length direction of the positive pole piece, and the length size of the negative pole piece can be larger than that of the positive pole piece.
The first insulating layer may be tab glue, and the second insulating layer may be tab glue. The widths of the positive pole piece and the negative pole piece can be different, so that the problem of short circuit inside the battery cell can be effectively avoided due to the arrangement of the first insulating layer and the second insulating layer. The first insulating layer may be an insulating coating, such as alumina (Al) 2 O 3 ) Zirconium oxide (ZrO) 2 ) The second insulating layer may be an insulating coating, such as alumina (Al) 2 O 3 ) Zirconium oxide (ZrO) 2 ) And the like.
In one embodiment, the battery cell 10 is a winding battery cell, and the conductive adhesive 13 is coated on the tab 12 to form the battery cell 10 by winding, that is, the conductive adhesive 13 may be coated on the tab 12 before the battery cell is formed by winding, so as to ensure that the coating position of the conductive adhesive 13 is accurately determined, and prevent the conductive adhesive 13 from being coated on the pole piece 11.
It should be noted that the conductive adhesive 13 may be coated on the tab 12 before winding to form the electrical core, that is, the conductive adhesive may be coated on the tab area before winding, and the conductive adhesive is wound while coating, so as to avoid long-term curing of the conductive adhesive, and the conductive adhesive is not coated on the boundary between the tab and the pole piece, and avoids the diaphragm, and avoids bonding the diaphragm and internal short circuit. Both sides of the tab 12 may be coated with the conductive paste 13, or one side of the tab 12 may be coated with the conductive paste 13.
In certain embodiments, it is not excluded that the conductive glue 13 is applied to the tab 12 after winding to form a cell.
In one embodiment, as shown in fig. 2, the electrode lead-out part includes a pole 20, and the pole 20 is electrically connected to the tab 12 and contacts with the conductive adhesive 13, so as to ensure reliable electrical connection between the pole 20 and the tab 12, and charge and discharge of the battery can be realized through the pole 20.
In one embodiment, as shown in fig. 1 and 2, the battery further includes a housing member 30 and a cover plate 40, the cover plate 40 is connected with the housing member 30 to seal the battery cell 10, and the terminal post 20 is disposed on the housing member 30. The pole post 20 and the housing part 30 can be arranged in an insulating manner, while the housing part 30 and the cover 40 form a battery housing. The housing member 30 includes an open end to which the cover plate 40 forms a seal. The shell member 30 and the cover plate 40 may be connected by welding, or the shell member 30 and the cover plate 40 may be connected by riveting.
In some embodiments, the shell member 30 may include a main body portion and a cover body portion, which may be separate structures, the cover body portion may be similar in structure to the cover plate 40, and the cover body portion may be disposed opposite the cover plate 40. The body portion and the cover portion may be welded or otherwise connected.
In some embodiments, the housing member 30 is an integrally formed structure, which is not only simple to manufacture, but also relatively efficient to manufacture, and can ensure reliable sealing performance.
In some embodiments, it is not excluded that the pole 20 may be provided to the cover plate 40.
In one embodiment, the electrode lead-out part includes the case member 30, and the case member 30 is electrically connected to the tab 12 and is in contact with the conductive paste 13, that is, the electrical connection between the case member 30 and the tab 12 is achieved, so that the case member 30 serves as an electrode lead-out terminal of the battery.
In one embodiment, the electrode lead-out part includes a cover plate 40, and the cover plate 40 is electrically connected to the tab 12 and is in contact with the conductive paste 13, i.e., the electrical connection of the cover plate 40 to the tab 12 is achieved, so that the cover plate 40 serves as an electrode lead-out terminal of the battery.
In one embodiment, as shown in fig. 3, the electrode lead-out part includes a current collecting disc 50, and the current collecting disc 50 is electrically connected to the tab 12 and is in contact with the conductive adhesive 13, that is, the current collecting disc 50 is electrically connected to the tab 12, so that the current collecting disc 50 serves as an electrode lead-out terminal of the battery.
Further, the current collecting plate 50 may be connected with the electrode post 20 such that the electrode post 20 serves as an electrode lead-out terminal of the battery. Alternatively, the current collecting disk 50 may be connected to a cover plate or housing member, so that the cover plate or housing member serves as an electrode lead-out terminal of the battery.
In one embodiment, the opposite ends of the battery cell 10 are respectively provided with a first tab, which can be connected with the terminal 20 disposed on the housing member 30, and a second tab, which can be electrically connected with the cover plate 40. One of the first tab and the second tab may be a positive tab, and the other may be a negative tab.
It should be noted that the battery may include one electrode post, or may include two electrode posts, that is, one electrode post may be a positive electrode post, and the other electrode post may be a negative electrode post.
It should be noted that, electric core 10 can include two utmost point ears, and an utmost point ear is anodal utmost point ear, and another is negative pole utmost point ear, the utility model discloses heavily explaining the connected mode of an utmost point ear, for example, anodal utmost point ear is provided with conductive adhesive 13, and the connected mode of the negative pole utmost point ear of opposite side does not do the restriction, for example, also can be provided with conductive adhesive on the negative pole utmost point ear, negative pole utmost point ear can carry out the electricity through the utmost point post on conductive adhesive and the shell part 30 and be connected, this moment, utmost point post and shell part 30 can regard as the electrode of battery to draw forth the end, perhaps, utmost point post and apron 40 can regard as the electrode of battery to draw forth the end. Or, the negative electrode tab is provided with the conductive adhesive 13, and the connection mode of the positive electrode tab on the other side is not limited, for example, the positive electrode tab may also be provided with the conductive adhesive, and the positive electrode tab may be electrically connected with the electrode post on the housing member 30 through the conductive adhesive, at this time, the electrode post and the housing member 30 may be used as an electrode leading-out end of the battery, or the electrode post and the battery cover plate may be used as an electrode leading-out end of the battery.
An embodiment of the invention also provides a battery pack comprising the battery.
The utility model discloses a group battery of embodiment includes the battery, and the battery includes electric core 10 and electrode extraction portion, and the electrode extraction portion can be connected with utmost point ear 12 and the conducting resin 13 of setting on utmost point ear 12 to improve the electric connection stability of electrode extraction portion and utmost point ear 12, guarantee the ability of overflowing between electrode extraction portion and utmost point ear 12 with this. Because the conductive adhesive 13 is arranged on the tab 12 and is arranged at an interval with the pole piece 11, the effective electric connection between the tab 12 and the electrode leading-out part can be ensured, and the problem that the conductive adhesive 13 causes the internal short circuit of the battery cell 10 can be avoided, so that the performance of the battery pack is improved.
In one embodiment, the battery pack is a battery module or a battery pack.
The battery module includes a plurality of batteries, and the battery can be square battery, and the battery module can also include end plate and curb plate, and end plate and curb plate are used for fixing a plurality of batteries. The battery can be a cylindrical battery, and the battery module can further comprise a bracket, and the battery can be fixed on the bracket.
The battery pack includes a plurality of batteries and a case for fixing the plurality of batteries.
It should be noted that, the battery pack includes a plurality of batteries, and a plurality of batteries are disposed in the box body. Wherein, a plurality of batteries can form and install in the box behind the battery module. Or, a plurality of batteries can directly set up in the box, need not to carry out the group to a plurality of batteries promptly, utilizes the box to fix a plurality of batteries.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. A battery, comprising:
the battery cell (10) comprises a pole piece (11) and a pole lug (12), wherein a conductive adhesive (13) is arranged on the pole lug (12), and the conductive adhesive (13) and the pole piece (11) are arranged at intervals;
and the electrode leading-out part is electrically connected with the tab (12) and is in contact with the conductive adhesive (13).
2. The battery according to claim 1, characterized in that the battery core (10) further comprises a separator (14), and the conductive adhesive (13) is arranged at a distance from the separator (14).
3. The battery according to claim 2, wherein a portion of the tab (12) overlaps the separator (14).
4. The battery according to claim 1, characterized in that the pole piece (11) is a positive pole piece and the tab (12) is a positive tab;
or the pole piece (11) is a negative pole piece, and the tab (12) is a negative pole tab;
a first insulating layer is arranged between the positive pole piece and the negative pole lug and covers the part of the conductive adhesive; and a second insulating layer is arranged between the negative pole piece and the positive pole lug and covers the part of the conductive adhesive.
5. The battery of claim 4, wherein the negative pole piece dimension exceeds the positive pole piece dimension, and wherein the first insulating layer extends from at least an end of the positive pole piece and is disposed beyond the negative pole piece.
6. The battery according to claim 1, characterized in that the cell (10) is a winding cell, and the conductive adhesive (13) is applied to the tab (12) to be wound to form the cell (10).
7. The battery according to claim 1, characterized in that the electrode lead-out comprises a pole (20), the pole (20) being electrically connected to the tab (12) and being in contact with the conductive glue (13).
8. The battery according to claim 6, further comprising a housing member (30) and a cover plate (40), wherein the cover plate (40) is connected with the housing member (30) to seal the battery cell (10);
wherein the shell member (30) is of an integrally formed structure.
9. The battery according to any one of claims 1 to 8, wherein the electrode lead-out portion comprises a housing member (30), the housing member (30) being electrically connected to the tab (12) and being in contact with the conductive adhesive (13);
or the electrode leading-out part comprises a cover plate (40), and the cover plate (40) is electrically connected with the tab (12) and is in contact with the conductive adhesive (13);
or the electrode leading-out part comprises a current collecting disc (50), and the current collecting disc (50) is electrically connected with the lug (12) and is in contact with the conductive adhesive (13).
10. The battery according to any one of claims 1 to 8, wherein the battery is a cylindrical battery.
11. A battery pack characterized by comprising the battery according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383102.6U CN217444588U (en) | 2022-02-24 | 2022-02-24 | Battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383102.6U CN217444588U (en) | 2022-02-24 | 2022-02-24 | Battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217444588U true CN217444588U (en) | 2022-09-16 |
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ID=83213341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220383102.6U Active CN217444588U (en) | 2022-02-24 | 2022-02-24 | Battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217444588U (en) |
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2022
- 2022-02-24 CN CN202220383102.6U patent/CN217444588U/en active Active
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