CN214672895U - Battery and battery pack - Google Patents
Battery and battery pack Download PDFInfo
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- CN214672895U CN214672895U CN202121044803.9U CN202121044803U CN214672895U CN 214672895 U CN214672895 U CN 214672895U CN 202121044803 U CN202121044803 U CN 202121044803U CN 214672895 U CN214672895 U CN 214672895U
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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
Abstract
The utility model relates to a battery technology field provides a battery and group battery. The battery comprises a battery cell, a shell and an insulating part, wherein the battery cell is positioned in the shell, and the peripheral outer edge of the shell is provided with a flange edge; the insulating portion covers at least a portion of the flange. By making the insulating portion cover at least part of the flange side of the housing, the problem of electrical connection of the flange side of the housing with an external component can be avoided.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery and group battery.
Background
The battery in the related art includes electric core and casing, and electric core is located the casing, because the structure of casing itself is mostly the metalwork, consequently when the battery installation, can appear the problem that battery case and external component electricity are connected to lead to the safety problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery and group battery to improve the battery structure.
According to a first aspect of the present invention, there is provided a battery, comprising:
an electric core;
the battery cell is positioned in the shell, and the peripheral outer edge of the shell is provided with a flange edge;
an insulating portion covering at least a portion of the flange.
The utility model discloses battery includes electric core, casing and insulating part, and electric core is located the casing, through making the insulating part cover the at least part on the flange limit of casing to can avoid the problem that the flange limit and the external component electricity of casing are connected.
According to a second aspect of the present invention, there is provided a battery pack comprising the above battery.
The utility model discloses battery of group battery includes electric core, casing and insulating part, and electric core is located the casing, through making the insulating part cover the at least part on the flange limit of casing to can avoid the problem that the flange limit and the external component electricity of casing are connected.
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 illustration of a partial structure of a battery according to an exemplary embodiment;
fig. 2 is a schematic diagram illustrating a partial structure of a cell of a battery according to an exemplary embodiment;
fig. 3 is a partially exploded structural view illustrating a case and an insulating part of a battery according to an exemplary embodiment.
The reference numerals are explained below:
10. an electric core; 11. a cell main body; 12. a tab; 20. a housing; 21. a flange edge; 22. a first housing member; 23. a second housing member; 24. a first surface; 25. a second surface; 30. an insulating section; 31. a cladding space; 40. the utmost point post subassembly.
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. 3, the battery includes: an electric core 10; the battery cell comprises a shell 20, wherein the battery cell 10 is positioned in the shell 20, and the circumferential outer edge of the shell 20 is provided with a flange 21; and an insulating part 30, wherein the insulating part 30 covers at least part of the flange edge 21.
The battery of an embodiment of the present invention includes a battery cell 10, a casing 20, and an insulating portion 30, the battery cell is located in the casing 20, and at least a portion of the flange 21 of the casing 20 is covered by the insulating portion 30, so that the problem that the flange 21 of the casing 20 is electrically connected to an external component can be avoided.
It should be noted that, since the flange 21 is provided at the outer circumferential edge of the case 20, that is, the flange 21 belongs to the outermost edge portion in the battery circumferential direction, the flange 21 is most easily electrically connected to an external component, and when the insulating portion 30 covers at least a portion of the flange 21 of the case 20, that is, the insulating portion 30 covers the entire flange 21, the flange 21 can be directly prevented from being electrically connected to the external component. When the flange 21 is partially covered with the insulating part 30, the insulating part 30 has a certain thickness, so that the uncovered part can be prevented from being electrically connected to an external part to some extent even after the cells are grouped.
In one embodiment, the insulating part 30 is disposed around the circumferential outer surface of the flange 21, and as shown in fig. 3, the insulating part 30 forms a circumferentially closed covering space 31, so that the circumferential outer surface of the flange 21 can be completely covered, so that the outermost side of the battery is the insulating part 30, thereby preventing the flange 21 from being electrically connected to an external component.
In one embodiment, the insulating portion 30 is an insulating member detachably disposed on the flange 21, which is convenient for installation and subsequent replacement. The insulating part can be installed on the flange edge 21 as an independent part after molding, can be made of rubber materials, can achieve an insulating effect, and has certain buffering capacity to prevent the flange edge 21 from being in hard contact with an external part.
The material of the insulating part 30 may include, but is not limited to, a polymer material such as polyethylene terephthalate (PET), polypropylene, Polycarbonate (PC), and Acrylonitrile Butadiene Styrene (ABS) resin.
In one embodiment, the insulating part 30 is an insulating coating, and does not occupy too much space on the premise of ensuring insulation, so that the volume of the battery can be minimized.
The insulating coating can be, but is not limited to, a ceramic material, such as alumina (Al)2O3) Zirconium oxide (ZrO)2) And the like.
Alternatively, the housing 20 may be made of stainless steel or aluminum, and has good corrosion resistance and sufficient strength.
In one embodiment, the thickness of the housing 20 is uniform, which not only provides greater structural stability, but also facilitates processing.
In one embodiment, as shown in fig. 3, the housing 20 includes: a first housing piece 22; a second housing part 23, the second housing part 23 being connected to the first housing part 22 to enclose the battery cell 10; wherein, at least one of the first housing piece 22 and the second housing piece 23 is provided with a flange 21, so that the insulation part 30 is arranged on the flange 21 to ensure the insulation effect.
In one embodiment, the first and second housing pieces 22, 23 are each provided with a flange 21 on their circumferential edges; the flange 21 of the first housing part 22 is welded to the flange 21 of the second housing part 23, so that the connection reliability of the first housing part 22 and the second housing part 23 is ensured.
Optionally, the insulating part 30 is a rubber ring, and the rubber ring covers the flange 21 of the first housing member 22 and the flange 21 of the second housing member 23, that is, the flange 21 of the first housing member 22 and the flange 21 of the second housing member 23 share one insulating part 30, so as to ensure the connection reliability of the insulating part 30.
In one embodiment, as shown in fig. 1 and 2, the battery further includes a pole assembly 40, the pole assembly 40 is disposed on the casing 20, and the battery cell 10 includes: a cell body 11; a tab 12, the tab 12 extending from the battery cell main body 11 in the longitudinal direction; the tab 12 is connected to the post assembly 40, and the post assembly 40 can be disposed at an end of the housing 20, so that the connection is facilitated and the length and space of the battery can be fully utilized. The tab 12 and the post assembly 40 may be directly connected, that is, the tab 12 and the post assembly 40 may be directly welded, or the tab 12 and the post assembly 40 may be connected by a metal adapter, and the specific connection mode may be welding, or riveting, and the like, and the connection mode is not limited herein.
It should be noted that the cell main body 11 includes more than two pole pieces, the tab 12 includes more than two single-piece tabs, the single-piece tabs respectively extend from the corresponding pole pieces, the width of the single-piece tabs is smaller than the width of the pole pieces, a plurality of single-piece tabs are stacked together to form the tab 12, and are connected with the pole assembly 40, wherein the tab 12 can be welded with the pole assembly 40. Wherein the single tab is made of a metal foil having good electrical and thermal conductivity, such as aluminum, copper, nickel, or the like.
In some embodiments, there are two pole assemblies 40, two pole assemblies 40 are a positive pole assembly and a negative pole assembly, respectively, there are two tabs 12, two tabs 12 are a positive tab and a negative tab, respectively, the positive pole assembly is connected to the positive tab, and the negative pole assembly is connected to the negative tab.
It should be noted that the pole assembly 40 and the housing 20 are insulated from each other, for example, the two may be insulated by an insulating member, or may be insulated by an insulating coating, which is not limited herein and may be selected according to actual needs.
Alternatively, the housing 20 may have an approximately rectangular structure, that is, the housing 20 may have a rectangular structure while neglecting manufacturing tolerances and the like.
In one embodiment, as shown in FIG. 1, the housing 20 includes two opposing first surfaces 24 and four second surfaces 25 disposed around the first surfaces 24, the first surfaces 24 having an area greater than the area of the second surfaces 25; wherein, the post assembly 40 is disposed on the first surface 24, i.e. the post assembly 40 is disposed on the large surface, so that it can be ensured that the post assembly 40 has a reliable supporting surface, thereby ensuring the stability of the post assembly 40.
It should be noted that the two opposite first surfaces 24 are large surfaces of the housing 20, the four second surfaces 25 are small surfaces of the housing, the four second surfaces 25 include two pairs of small surfaces, i.e., a first pair of small surfaces extending along the length direction of the housing 20 and a second pair of small surfaces extending along the width direction of the housing, and the area of the first pair of small surfaces is larger than that of the second pair of small surfaces, but smaller than that of the large surfaces.
In certain embodiments, it is not excluded that the pole assembly 40 is disposed on the second surface 25.
In one embodiment, the length of the housing 20 is a, 400mm a 2500mm, the width of the housing 20 is b, the height of the housing 20 is c, 2b a 50b, and/or 0.5c b 20 c.
Furthermore, b is more than or equal to 50mm and less than or equal to 200mm, and c is more than or equal to 10mm and less than or equal to 100 mm.
Preferably, 4 b.ltoreq.a.ltoreq.25 b, and/or 2 c.ltoreq.b.ltoreq.10 c.
In the case of the housing 20 of the above embodiment, the ratio of the length to the width of the housing 20 is large, and further, the ratio of the width to the height of the housing 20 is large, while ensuring sufficient energy density.
In one embodiment, the length of the housing 20 is a, the width of the housing 20 is b, the height of the housing 20 is c, 4b ≦ a ≦ 7b, and/or 3c ≦ b ≦ 7 c.
In one embodiment, the length of the case 20 is a, the width of the case 20 is b, 4b ≦ a ≦ 7b, i.e., the ratio of the length to the width of the battery in this embodiment is larger, so as to increase the energy density of the battery and facilitate the subsequent formation of the battery pack.
In one embodiment, the height of the housing 20 is c, b is more than or equal to 3c and less than or equal to 7c, and the ratio of the width to the height of the housing 20 is large, so that the housing can be conveniently formed under the condition of ensuring enough energy density.
Alternatively, the length of the housing 20 may be 500mm to 1500mm, the width of the housing 20 may be 80mm to 150mm, and the height of the housing 20 may be 15mm to 25 mm.
The length of the case 20 is the dimension in the battery longitudinal direction, the width of the case 20 is the dimension in the battery width direction, and the height of the case 20 is the dimension in the battery height direction, that is, the thickness of the battery.
In one embodiment, the battery cells 10 are laminated battery cells, which are not only convenient for grouping, but also can be processed to obtain batteries with longer length. The cell 10 has a first pole piece, a second pole piece opposite to the first pole piece, and a diaphragm disposed between the first pole piece and the second pole piece, so that a plurality of pairs of the first pole piece and the second pole piece are stacked to form a laminated cell.
Optionally, the battery may be a wound battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound battery core.
The length of the housing is the dimension of the housing in the length direction, the width of the housing is the dimension of the housing in the width direction, and the height of the housing is the dimension of the housing in the height direction, that is, the thickness of the housing. The housing has a length direction and a width direction, and both the length direction and the width direction are linear directions, the length direction may be an extending direction in which the housing is longer, and the width direction may be an extending direction in which the housing is shorter. The height direction may be a housing thickness direction.
An embodiment of the utility model also provides a group battery, including foretell battery.
The battery of the battery pack according to an embodiment of the present invention includes the battery cell 10, the casing 20, and the insulating portion 30, and the battery cell is located in the casing 20, and the insulating portion 30 covers at least a portion of the flange 21 of the casing 20, so that the problem that the flange 21 of the casing 20 is electrically connected to an external component can be avoided.
In some embodiments, the battery pack includes at least two cells, and the at least two cells are arranged in parallel so as to be grouped into the battery pack.
The battery pack may be a battery module or a battery pack.
Optionally, the battery pack includes at least two battery modules, and the battery pack may further include a box body, and the at least two battery modules are disposed in the box body. Alternatively, a plurality of batteries can be directly arranged in the box body, namely, the battery grouping process is omitted.
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 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 (10)
1. A battery, comprising:
an electric core (10);
the battery cell (10) is positioned in the shell (20), and the circumferential outer edge of the shell (20) is provided with a flange edge (21);
an insulating portion (30), the insulating portion (30) covering at least a portion of the flange edge (21).
2. The battery according to claim 1, characterized in that the insulation (30) is arranged around the circumferential outer surface of the flange (21), the insulation (30) forming a circumferentially closed cladding space (31).
3. The battery according to claim 1, wherein the insulating portion (30) is an insulating member detachably provided on the flange side (21);
or, the insulating part (30) is an insulating coating.
4. The battery according to claim 1, wherein the case (20) comprises:
a first housing piece (22);
a second housing part (23), wherein the second housing part (23) is connected to the first housing part (22) in order to enclose the electrical core (10);
wherein the flange edge (21) is provided on at least one of the first housing part (22) and the second housing part (23).
5. The battery according to claim 4, wherein the first and second case members (22, 23) are each provided with the flange (21) on a circumferential edge thereof;
wherein the flange edge (21) of the first housing part (22) is welded to the flange edge (21) of the second housing part (23).
6. The battery according to claim 5, wherein the insulating portion (30) is a rubber ring that covers the flange sides (21, 21) of the first and second case members (22, 23).
7. The battery of claim 1, further comprising a pole assembly (40), the pole assembly (40) disposed on the housing (20), the cell (10) comprising:
a cell body (11);
a tab (12), wherein the tab (12) extends out from the length direction of the battery core main body (11);
wherein the pole ear (12) is connected with the pole column assembly (40).
8. The battery according to claim 7, wherein the case (20) comprises two opposing first surfaces (24) and four second surfaces (25) disposed around the first surfaces (24), the first surfaces (24) having an area greater than the area of the second surfaces (25);
wherein the pole assembly (40) is disposed on the first surface (24).
9. The battery according to any one of claims 1 to 8, wherein the length of the case (20) is a, the width of the case (20) is b, the height of the case (20) is c, 2b ≦ a ≦ 50b, and/or, 0.5c ≦ b ≦ 20 c;
400mm≤a≤2500mm。
10. a battery pack characterized by comprising the battery according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121044803.9U CN214672895U (en) | 2021-05-14 | 2021-05-14 | Battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121044803.9U CN214672895U (en) | 2021-05-14 | 2021-05-14 | Battery and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN214672895U true CN214672895U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121044803.9U Active CN214672895U (en) | 2021-05-14 | 2021-05-14 | Battery and battery pack |
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| CN (1) | CN214672895U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374030A (en) * | 2022-02-10 | 2022-04-19 | 中创新航科技股份有限公司 | Battery, battery pack and preparation method of battery |
| WO2023155625A1 (en) * | 2022-02-21 | 2023-08-24 | 宁德时代新能源科技股份有限公司 | Battery and electric device |
-
2021
- 2021-05-14 CN CN202121044803.9U patent/CN214672895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374030A (en) * | 2022-02-10 | 2022-04-19 | 中创新航科技股份有限公司 | Battery, battery pack and preparation method of battery |
| WO2023155625A1 (en) * | 2022-02-21 | 2023-08-24 | 宁德时代新能源科技股份有限公司 | Battery and electric device |
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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. 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. |