CN217655969U - Battery with improved battery capacity - Google Patents
Battery with improved battery capacity Download PDFInfo
- Publication number
- CN217655969U CN217655969U CN202221536500.3U CN202221536500U CN217655969U CN 217655969 U CN217655969 U CN 217655969U CN 202221536500 U CN202221536500 U CN 202221536500U CN 217655969 U CN217655969 U CN 217655969U
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- battery
- electric core
- shell
- pole
- core body
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- 238000005192 partition Methods 0.000 claims abstract description 11
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
A battery, comprising: the battery comprises an arc-shaped shell, wherein at least two mutually independent and non-communicated battery cell accommodating cavities are formed in the shell, the battery cell accommodating cavities are separated by a partition plate, and electrolyte is filled in the battery cell accommodating cavities; a cover plate fitted to the housing; and the electric core body is arranged in the electric core accommodating cavity. The utility model discloses a curved casing can construct the curved surface structure of battery as the packaging structure of electric core in the battery, curved casing, can act as the packaging structure of battery simultaneously again, through the original packaging structure of battery such as cancellation plastic-aluminum membrane, reaches the purpose that occupies, improves battery whole energy density that reduces the space volume.
Description
Technical Field
The utility model belongs to the technical field of the lithium cell, concretely relates to battery.
Background
As electronic products are more and more diversified in form, batteries used for electronic products have more structural changes, and curved batteries are more and more applied in addition to conventional square, cylindrical, button-shaped and other shapes. At present, the curved surface battery is mainly prepared by the following two methods, one method is to press the planar battery into a corresponding curved surface in the formation process, but the process of hot pressing the planar battery into the curved surface is complex, the size is unstable, and the yield is low. The other method is that single soft package planar batteries are connected in series through a pack to form a curved battery pack, compared with a hot press forming mode, the pack process omits the step of hot pressing to form a curved surface, but the single batteries are combined in the pack mode, and each single battery is provided with packaging structures such as an aluminum plastic film, when a plurality of single batteries are assembled into the battery pack, the packaging structures occupy certain space, and the joint of adjacent batteries also occupies extra space, so that the overall energy density of the batteries is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery that preparation simple process, energy density are high.
In order to achieve the above object, the present invention adopts the following technical solutions:
a battery comprises an arc-shaped shell, wherein at least two mutually independent and non-communicated battery cell accommodating cavities are formed in the shell, the battery cell accommodating cavities are separated by a partition plate, and electrolyte is filled in the battery cell accommodating cavities; a cover plate fitted to the housing; and the electric core body is arranged in the electric core accommodating cavity.
Further, the electrical core has tabs; the shell is internally provided with an electric core connecting assembly which is respectively electrically connected with the lugs of the electric cores positioned in the adjacent electric core accommodating cavities.
Further, the electric core connecting assembly is connected with the lugs of the adjacent electric cores with different polarities; or the electric core connecting assembly is connected with the lugs of the adjacent electric cores with the same polarity.
Further, electric core coupling assembling includes utmost point ear connection piece, the both ends of utmost point ear connection piece are located adjacent electric core respectively and hold the intracavity, utmost point ear connection piece links to each other with the utmost point ear that is located the electric core that adjacent electric core held the intracavity respectively.
Furthermore, the lug connecting sheet penetrates through the separator, and the lug connecting sheet is connected with the separator in a sealing manner.
Further, the electrical core body connecting assembly further comprises an insulating plate, and the insulating plate is located between the tab connecting piece and the inner wall of the shell.
Further, still including set up in first utmost point post subassembly and second utmost point post subassembly on the casing, first utmost point post subassembly with the first utmost point ear of the first electric core in the casing links to each other, the second utmost point post subassembly with the second utmost point ear of the last electric core in the casing links to each other.
Further, the first pole assembly and/or the second pole assembly comprises: the terminal post connecting piece is arranged outside the shell, the terminal post connecting piece is arranged in the shell, the rivet penetrates through the shell and is respectively connected with the terminal post and the terminal post connecting piece, and the terminal post connecting piece is connected with the terminal lug of the electric core body.
Further, first utmost point post subassembly still includes first insulation piece and/or second insulating piece, first insulation piece is located state utmost point post with between the outer wall of casing, the second insulating piece is located utmost point post connection piece with between the inner wall of casing.
Further, the cross section of the shell is in a circular arc shape or a curve shape; and/or a liquid injection hole communicated with each battery cell accommodating cavity is formed in the shell; and/or the electric core body is a winding battery cell or a laminated battery cell.
According to the technical scheme provided by the utility model, the utility model discloses an arc casing is as the packaging structure of curved surface battery, pack naked electric core into in the casing mutually independent electric core holds the chamber, the electrolyte that mutually independent electric core held the intracavity is kept apart completely, not circulation of each other, the electricity core is established ties at inside and is formed the battery, the arc casing both is the frame construction who constructs the curved surface battery, but also the packaging structure of electricity core, can remove conventional cyclic annular structure such as plastic-aluminum membrane from, reduce the battery accessories, thereby reduce the honor of occupation of corresponding space, the holistic energy density of battery has been promoted; and the reduction of accessories can also simplify the manufacturing process, which is beneficial to improving the production efficiency.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a partially exploded structure of the embodiment of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
fig. 4 is a partially enlarged view of a portion B in fig. 2.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, wherein for convenience of illustration, the drawings showing the structure of the device are not to scale and are partially enlarged, and the drawings are only examples, which should not limit the scope of the invention. It should be noted that the drawings are in simplified form and are not to precise scale, which is only used for the purpose of facilitating and clearly assisting in the description of the embodiments of the present invention. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; the terms "front," "back," "bottom," "upper," "lower," and the like refer to an orientation or positional relationship based on that shown in the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the battery of the present invention includes a housing 1, a cover plate 2, an electric core 3, a first pole assembly 4, a second pole assembly 5 and an electric core connection assembly 6. The shell 1 is an arc-shaped shell, the cross section of the shell 1 can be in a standard arc shape or an irregular curve arc shape, and the cross section can be correspondingly adjusted according to production requirements. After the cover plate 2 is covered on the shell 1, a closed space is formed by the cover plate and the shell 1. A plurality of mutually independent electric core accommodating cavities 1a are formed in the shell 1, and adjacent electric cores are mutually separated through partition boards 1b between the accommodating cavities 1a and are not communicated with each other. An electric core body 3 is placed in one electric core accommodation cavity 1 a. The utility model discloses an electricity core indicates the naked electric core that does not contain packaging structure such as plastic-aluminum membrane, and the electricity core can be the coiling electric core that adopts coiling technology production, or adopts the lamination electricity core of lamination technology production. The electric core body 3 comprises a positive plate, a negative plate and a diaphragm positioned between the positive plate and the negative plate, the electric core body 3 can be manufactured by a lamination process or a winding process, and each electric core body 3 is provided with a first pole lug 3a and a second pole lug 3b. The cross-sectional shape of the electrical core 3 is square.
Optionally, the housing 1 and the cover plate 2 of this embodiment are both made of metal materials, and compared with other materials, the metal materials have the advantage of being easy to form, and the partition plate 1b is also preferably made of the same material as the housing 1, and except for being easy to form, the metal materials achieve a good sealing effect by welding and sealing, and the process is simple. Meanwhile, the metal material can also realize thinner thickness, the thickness of the partition board 1b can be 0.01 mm-0.5 mm, and the battery cell accommodating cavity is partitioned by the thin partition board, so that the energy density of the battery is improved. In other embodiments, the housing 1, the cover plate 2 and the partition plate 1b may be made of other materials.
The electric cores 3 in the adjacent electric core accommodating cavities 1a are electrically connected through an electric core connecting assembly 6, and the electric core connecting assembly 6 of the embodiment comprises a tab connecting piece 6-1 and an insulating piece 6-2. The tab connecting sheet 6-1 is used for realizing the electric connection of tabs with different polarities of the adjacent electric cores 3. The tab connecting sheet 6-1 penetrates through the separator 1b, and two end parts are respectively connected with the tabs of the electric core bodies 3 which are adjacently placed. The insulation sheet 6-2 is positioned between the tab connection sheet 6-1 and the inner wall of the shell 1 and is used for realizing insulation between the tab connection sheet 6-1 and the shell 1. The contact position between the tab connecting piece 6-1 and the separator 1b is sealed by welding and can be insulated by means of insulating glue and the like. The electrical core connection assembly 6 can be used to connect a plurality of electrical cores 3 in series or in parallel to obtain a desired voltage. The series connection is that the lugs with different polarities of different electric cores are connected together through the electric core connecting assembly 6, and the parallel connection is that the lugs with the same polarity of different electric cores are connected together through the electric core connecting assembly 6.
First utmost point post subassembly 4 and second utmost point post subassembly 5 set up on casing 1, are located casing 1's both ends, and first utmost point post subassembly 4 and second utmost point post subassembly 5 link to each other with the utmost point ear of first electric core body and last electric core body respectively. As shown in FIG. 3, the first pole assembly 4 comprises a pole 4-1, a rivet 4-2, a pole connecting sheet 4-3, a first insulating sheet 4-4 and a second insulating sheet 4-5. The pole 4-1 is connected with the pole connecting sheet 4-3 through the rivet 4-2, the pole 4-1 is positioned outside the shell 1, the pole connecting sheet 4-3 is positioned in the shell 1, and the pole connecting sheet 4-3 is electrically connected with the pole ear of the electric core body 3. The rivet 4-2 penetrates through the shell 1, one end of the rivet extends into the shell 1 and is connected with the pole connecting sheet 4-3, and the other end of the rivet penetrates through the shell 1 and is connected with the pole 4-1. The first insulating sheet 4-4 is positioned between the pole 4-1 and the outer wall of the housing 1, and the second insulating sheet 4-5 is positioned between the pole connecting sheet 4-3 and the inner wall of the housing 1. One cell has two pole assemblies to achieve an electrical output. The pole, the pole connecting sheet and the insulating sheet of this embodiment all adopt a wafer structure, and in other embodiments, the pole connecting sheet and the insulating sheet can also adopt polygonal structures such as triangular sheets and square sheets, and are not limited herein. The second pole assembly 5 comprises a pole, a rivet, a pole connecting sheet, and may further comprise a first insulating sheet and/or a second insulating sheet. The second pole assembly 5 and the first pole assembly 4 of the present embodiment have the same structure, and the structure thereof can be described with reference to the structure of the first pole assembly 4.
The following explains the utility model discloses curved surface battery's assembling process:
placing the electrical cores 3 into the electrical core accommodating cavities 1a of the shell 1, wherein each electrical core 3 is positioned in the respective electrical core accommodating cavity 1a and isolated from each other;
the electric core connecting components 6 are adopted to connect the lugs of the adjacent electric cores 3 with different polarities, so that the electric connection among the electric cores 3 is realized; the electric cores 3 in the shell 1 are connected in series end to end through an electric core connecting assembly 6;
connecting a first tab of a first electric core body 3 with a first pole assembly 4, and connecting a second tab of a last electric core body 3 with a second pole assembly 5;
welding the shell and the cover plate together in a laser welding mode and the like, and welding the cover plate and the partition plate to form sealing, so that each electric core accommodating cavity 1a is a mutually independent and isolated cavity;
after the casing and the cover plate are assembled, electrolyte is added into each electric core body accommodating cavity 1a through a liquid injection hole 1c arranged on the casing, and the liquid injection hole 1c is sealed after liquid injection. The space that every electrical core body held chamber 1a formed this moment is equivalent to electrical core body 3's packaging structure, and a plurality of airtight spaces that are formed by casing 1 and apron 2 are similar to the plastic-aluminum membrane of packing electrical core body 3 promptly to can cancel the plastic-aluminum membrane packing among the conventional laminate polymer battery, reduce the occupation in space, reach the purpose that improves battery energy density. And each electric core body accommodating cavity 1a is mutually independent and is separated by a partition plate 1b, and electrolyte among the cavities in the battery is not communicated with each other.
The utility model discloses a curved surface shape of curved casing structure battery, the dress still is the square battery structure of rule at the inside electric core body of casing, compare in the technology of hot pressing one-tenth arc battery, the electric core body still adopts conventional preparation technology to make, can not increase the technology degree of difficulty, the yield of product is high, and the outside only one deck casing of electric core body, need not to set up packaging structure such as encapsulated film again, compare with the group battery that the pack form is constituteed, the accessory of group battery has been reduced, the space that has also reduced various accessories occupies, thereby the energy density of battery has been improved. Meanwhile, a plurality of electric core bodies which are connected in series end to end in the battery are separated by the partition plates, so that complete isolation of electrolyte in each electric core body accommodating groove is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A battery, comprising:
the battery comprises an arc-shaped shell, wherein at least two mutually independent and non-communicated battery cell accommodating cavities are formed in the shell, the battery cell accommodating cavities are separated by a partition plate, and electrolyte is filled in the battery cell accommodating cavities;
a cover plate fitted to the housing;
and the electric core body is arranged in the electric core accommodating cavity.
2. The battery of claim 1, wherein: the electrical core has tabs; the shell is internally provided with an electric core body connecting assembly which is respectively electrically connected with the polar lugs of the electric core bodies positioned in the adjacent electric core containing cavities.
3. The battery of claim 2, wherein: the electric core connecting assembly is connected with the lugs of the adjacent electric cores with different polarities;
or the electric core connecting assembly is connected with the lugs of the adjacent electric cores with the same polarity.
4. The battery of claim 2 or 3, wherein: the electric core body connecting assembly comprises pole lug connecting plates, the two ends of the pole lug connecting plates are respectively located in the adjacent electric core containing cavities, and the pole lug connecting plates are respectively connected with pole lugs of the electric core body located in the adjacent electric core containing cavities.
5. The battery of claim 4, wherein: the lug connecting sheet penetrates through the separator, and the lug connecting sheet is connected with the separator in a sealing mode.
6. The battery of claim 4, wherein: the electric core body connecting assembly further comprises an insulating plate, and the insulating plate is located between the pole lug connecting sheet and the inner wall of the shell.
7. The battery of claim 1, wherein: the first pole post component is connected with a first pole lug of a first electric core body in the shell, and the second pole post component is connected with a second pole lug of a last electric core body in the shell.
8. The battery of claim 6, wherein: the first pole post assembly and/or the second pole post assembly comprises: the terminal post is arranged outside the shell, the terminal post connecting piece is arranged in the shell, the rivet penetrates through the shell and is respectively connected with the terminal post and the terminal post connecting piece, and the terminal post connecting piece is connected with the electrode lug of the electric core body.
9. The battery of claim 7, wherein: first utmost point post subassembly still includes first insulation piece and/or second insulating piece, first insulation piece be located state utmost point post with between the outer wall of casing, the second insulating piece is located utmost point post connection piece with between the inner wall of casing.
10. The battery of claim 1, wherein: the cross section of the shell is arc-shaped or curved;
and/or a liquid injection hole communicated with each battery cell accommodating cavity is formed in the shell;
and/or the electric core body is a winding electric core or a lamination electric core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221536500.3U CN217655969U (en) | 2022-06-17 | 2022-06-17 | Battery with improved battery capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221536500.3U CN217655969U (en) | 2022-06-17 | 2022-06-17 | Battery with improved battery capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217655969U true CN217655969U (en) | 2022-10-25 |
Family
ID=83683721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221536500.3U Active CN217655969U (en) | 2022-06-17 | 2022-06-17 | Battery with improved battery capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217655969U (en) |
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2022
- 2022-06-17 CN CN202221536500.3U patent/CN217655969U/en active Active
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