CN219643067U - Cylinder energy storage monomer and energy storage module - Google Patents
Cylinder energy storage monomer and energy storage module Download PDFInfo
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- CN219643067U CN219643067U CN202320141795.2U CN202320141795U CN219643067U CN 219643067 U CN219643067 U CN 219643067U CN 202320141795 U CN202320141795 U CN 202320141795U CN 219643067 U CN219643067 U CN 219643067U
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- pole
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- end cover
- shell
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- 238000004146 energy storage Methods 0.000 title claims abstract description 81
- 239000000178 monomer Substances 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims description 19
- 210000004027 cell Anatomy 0.000 claims description 18
- 210000000352 storage cell Anatomy 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 7
- 230000002708 enhancing effect Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000012212 insulator Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a cylindrical energy storage monomer which comprises a monomer body, wherein a first pole and a second pole are correspondingly arranged at two ends of the monomer body respectively, and connecting structures matched with each other are respectively arranged on the corresponding first pole and second pole. The utility model also discloses an energy storage module, which comprises at least two cylindrical energy storage monomers as described above, wherein the first pole of one cylindrical energy storage monomer and the second pole of the other cylindrical energy storage monomer are connected in series through a connecting structure. According to the cylindrical energy storage monomer and the energy storage module, the first pole and the second pole of two adjacent energy storage monomers can be directly connected together through the mutually matched connecting structures to realize series connection, an auxiliary connecting piece is not required to be additionally arranged, the weight of the module is not increased, the structure can be simplified, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of electric energy storage, and particularly relates to a cylindrical energy storage monomer and an energy storage module.
Background
With the development of electrochemical energy storage technology, the energy density is higher and higher. In particular, for lithium ion batteries, very high energy densities can be achieved. Under the working state, ions in the lithium ion battery move at a high speed and generate electrochemical reaction, so that the internal temperature of the lithium ion battery is increased, and if heat cannot be discharged in time, the risk of thermal runaway exists. Therefore, for energy storage cells such as lithium ion batteries, it is extremely important to control temperature and heat. Most of the existing battery monomers adopt square or round solid structures, and although the volume energy density can be increased, the heat inside the battery monomers is difficult to discharge, so that the safety risk exists.
In view of this, in order to improve the heat dissipation performance of the battery cell, a ring-shaped battery has been proposed. Compared with a solid cylindrical battery, the annular battery can increase the heat dissipation area through the hollow channel in the inner shell, so that heat generated in the battery can be discharged more quickly, and the safety performance is improved. However, the existing annular battery is provided with electrodes at two ends, although the requirements of single discharge can be met, in the prior art, in order to meet the requirements of discharge voltage and discharge power, the discharge is realized in a mode that a plurality of battery single cells form a module, and when the existing annular battery forms the module, the existing annular battery needs to be connected in series and parallel by adopting an electric connection result of an auxiliary connecting piece, so that the weight of the module is increased, the energy density is reduced, the structure of the module is complex, and the production cost is increased.
Disclosure of Invention
Accordingly, the present utility model is directed to a cylindrical energy storage unit and an energy storage module, which can be easily connected in series.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model firstly provides a cylindrical energy storage monomer which comprises a monomer body, wherein a first pole and a second pole are correspondingly arranged at two ends of the monomer body respectively, and connecting structures matched with each other are respectively arranged on the corresponding first pole and second pole.
Further, the first pole and the second pole are both coaxially arranged with the single body, and a central through hole is arranged in the single body; and a connecting through hole coaxial with the central through hole is arranged in the second pole.
Further, the connecting through hole is a conical hole, the geometric dimension of the conical hole gradually decreases along the direction of the second pole pointing to the first pole, and the first pole is a conical pole which can be in plug-in fit with the conical hole; or, the inner wall of the connecting through hole and the outer wall of the first polar column are cylindrical surfaces, the connecting through hole is provided with a threaded hole, and the outer wall of the first polar column is provided with external threads which can be matched with the threaded hole.
Further, the first pole and the second pole are respectively and annularly and uniformly distributed on the end surfaces of the two ends of the single body, and mutually matched plug-in structures are respectively arranged between the corresponding first pole and the corresponding second pole.
Further, the monomer body includes coaxial shell and the inner shell that sets up, install energy storage electricity core in the space between shell and the inner shell.
Further, a first end cover is arranged between one ends of the outer shell and the inner shell, and the first end cover is in welded connection with the outer shell and the inner shell, or the first end cover is integrally arranged between the outer shell and the inner shell.
Further, a first current collecting disc is arranged between the energy storage battery core and the first end cover, and the first current collecting disc is used for enabling the first tab of the energy storage battery core to be electrically connected with the first end cover.
Further, a second end cover is arranged between the other ends of the outer shell and the inner shell, a second current collecting disc is arranged between the energy storage battery core and the second end cover, and the second current collecting disc is used for enabling a second lug of the energy storage battery core to be electrically connected with the second end cover.
Further, an outer insulating member and an inner insulating member are respectively arranged between the second end cover and the outer shell and the inner shell.
Further, an outer sealing ring and an inner sealing ring are respectively arranged between the second end cover and the outer insulating piece and between the second end cover and the inner insulating piece.
Further, an external pressure groove for enhancing the sealing performance is arranged at a position on the shell corresponding to the external sealing ring; and an internal pressure groove for enhancing the sealing performance is arranged at the position of the inner shell corresponding to the internal sealing ring.
Further, the outer insulating part and the inner insulating part are respectively provided with an outer limit part and an inner limit part which are in limit fit with each other between the end faces of the second end cover, the second end of the outer shell is provided with an outer curled edge which is in limit fit with the outer limit part, and the second end of the inner shell is provided with an inner curled edge which is matched with the inner limit part.
Further, the first pole is disposed on the first end cap and the second pole is disposed on the second end cap.
Further, a central through hole is formed in the single body, the central through hole is positioned in the inner shell and penetrates through the first pole, and a connecting through hole coaxial with the central through hole is formed in the second pole; and communication holes for introducing cooling medium are formed in the side walls of the first pole and/or the second pole.
Further, the first pole is disposed on the second end cap and the second pole is disposed on the first end cap.
Further, the energy storage battery cell is a battery cell or a capacitor cell.
The utility model also provides an energy storage module, which comprises at least two cylindrical energy storage monomers as described above, wherein the first pole of one cylindrical energy storage monomer and the second pole of the other cylindrical energy storage monomer are connected in series or in parallel through a connecting structure.
The utility model has the beneficial effects that:
according to the cylindrical energy storage monomer, the first pole and the second pole are correspondingly arranged at two ends of the monomer body respectively, and the mutually matched connecting structures are respectively arranged on the first pole and the second pole, so that when the at least two cylindrical energy storage monomers are used for forming the energy storage module, the first pole and the second pole of the adjacent two energy storage monomers are directly connected together through the mutually matched connecting structures to realize series connection or parallel connection, an auxiliary connecting piece is not required to be additionally arranged, the weight of the module is not increased, the structure is simplified, and the production cost is reduced.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the present utility model provides the following drawings for description:
FIG. 1 is a schematic diagram of a cylindrical energy storage cell embodiment of the present utility model;
FIG. 2 is an enlarged view of area A of FIG. 1;
FIG. 3 is a perspective view of a cylindrical energy storage cell according to the present embodiment;
fig. 4 is a schematic structural diagram of the energy storage module.
Reference numerals illustrate:
10-monomer body; 11-a housing; 11 a-outer crimp; 12-an inner shell; 12 a-inner hemming; 13-an energy storage cell; 14-a first end cap; 15-a second end cap; 16-a first manifold disk; 17-a second manifold disk; 18-an outer insulator; 18 a-an outer limit; 19-an inner insulator; 19 a-an inner limit part; 20-an outer sealing ring; 21-an inner seal ring; 22-an external pressure groove; 23-an internal pressure tank; 24-a first pole; 25-second pole; 26-a central through hole; 27-connecting through holes; 28-communication holes.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the utility model, so that those skilled in the art may better understand the utility model and practice it.
Fig. 1 is a schematic structural diagram of an embodiment of a cylindrical energy storage monomer according to the present utility model. The cylindrical energy storage cell of the present embodiment includes a cell body 10. The single body 10 of the present embodiment includes an outer casing 11 and an inner casing 12 coaxially arranged, and an energy storage cell 13 is installed in a space between the outer casing 11 and the inner casing 12. A first end cap 14 is provided between the outer shell 11 and one end of the inner shell 12 in this embodiment, and a second end cap 15 is provided between the outer shell 11 and the other end of the inner shell 12.
Specifically, the first end cover 14 is integrally provided with the outer shell 11 and the inner shell 12, that is, in this embodiment, the outer shell 11, the inner shell 12 and the first end cover 14 are integrally provided. Of course, in other embodiments, the first end cap 14 may be welded to the outer shell 11 and the inner shell 12, which can also meet the use requirement, and will not be described herein. A first current collecting disc 16 is arranged between the energy storage battery core 13 and the first end cover 14, and the first current collecting disc 16 is used for electrically connecting the first tab of the energy storage battery core 13 and the first end cover 14, so that the integrally arranged outer shell 11, inner shell 12 and first end cover 14 all form a first electrode of the single body 10.
As shown in fig. 2, in this embodiment, a second current collecting disc 17 is disposed between the energy storage cell 13 and the second end cap 15, and the second current collecting disc 17 is used to electrically connect the second electrode of the energy storage cell 13 and the second end cap 15, that is, the second end cap 15 forms the second electrode of the unit body 10. In order to prevent a short circuit between the first electrode and the second electrode of the cell body 10, the present embodiment is provided with an outer insulator 18 and an inner insulator 19 between the second end cap 15 and the outer and inner cases 11 and 12, respectively. Correspondingly, in order to meet the sealing effect, the present embodiment is provided with an outer sealing ring 20 and an inner sealing ring 21 between the second end cap 15 and the outer insulating member 18 and the inner insulating member 19, respectively. In order to enhance the sealing performance of the outer seal ring 20 and the inner seal ring 21, the present embodiment is provided with an outer pressing groove 22 for enhancing the sealing performance at a position on the housing 11 corresponding to the outer seal ring 20. The present embodiment is provided with an internal pressure groove 23 for enhancing sealing performance at a position corresponding to the internal seal ring 21 on the inner case 12. In addition, in order to axially fix the second end cover 15, the present embodiment is provided with an outer limit portion 18a and an inner limit portion 19a, which are in limit fit with the end surfaces of the second end cover 15, respectively, on the outer insulator 18 and the inner insulator 19. In this way, in this embodiment, the second end of the housing 11 is provided with the outer bead 11a that is in a limit fit with the outer limit portion 18a, and the outer side of the second end cover 15 can be fixed in a limit manner by combining the limit fit relationship between the outer bead 11a and the outer limit portion 18a and the limit fit relationship between the outer limit portion 18a and the second end cover 15. Similarly, in this embodiment, the second end of the inner shell 12 is provided with the inner curled edge 12a matched with the inner limiting portion 19a, and the inner side of the second end cover 15 can be limited and fixed by combining the limiting matching relationship between the inner curled edge 12a and the inner limiting portion 19a and the limiting matching relationship between the inner limiting portion 19a and the second end cover 15. In this way, the second end cap 15 can be axially fixed.
In this embodiment, a first pole 24 and a second pole 25 are respectively disposed at two ends of the single body 10, the first pole 24 is disposed on the first end cover 14, and the second pole 25 is disposed on the second end cover 15. Specifically, in the present embodiment, the first pole 24 and the second pole 25 are both coaxially disposed with the single body 10, and a central through hole 26 is disposed in the single body 10, and the central through hole 26 is located in the inner casing 12 and penetrates through the first pole 24; the second post 25 has a connection through-hole 27 formed therein coaxially with the central through-hole 26. Specifically, in this embodiment, the inner wall of the connecting through hole 27 and the outer wall of the first pole 24 are cylindrical surfaces, the connecting through hole 27 is set to be a threaded hole, and an external thread capable of being matched with the threaded hole is disposed on the outer wall of the first pole 24, so that the first pole 24 and the second pole 25 of two adjacent energy storage monomers can be directly connected through a threaded connection mode. Of course, in other embodiments, the connection through hole 27 may be a tapered hole, and the geometric dimension of the tapered hole gradually decreases along the direction of the second pole 25 pointing to the first pole 24, and the first pole 24 is a tapered pole that can be in plug-in fit with the tapered hole, so that the plug-in connection between the first pole 24 and the second pole 25 adjacent to the two energy storage monomers can be directly realized through the tapered hole and the tapered pole. Of course, in other embodiments, the first pole 24 and the second pole 25 may not be coaxially disposed with the single body 10, for example, the first pole 24 and the second pole 25 may be respectively and annularly disposed on two end surfaces of the single body 10, and mutually matched plug structures are respectively disposed between the corresponding first pole 24 and second pole 25, which can also achieve the technical purpose of plug connection of adjacent energy storage single bodies. In a preferred embodiment of the present embodiment, communication holes 28 for introducing a cooling medium may be provided in the side walls of the first pole 24 and/or the second pole 25. Of course, the communication hole 28 may be provided on the side wall of the first pole 24, the side wall of the second pole 25, or both the side walls of the first pole 24 and the second pole 25 may be provided with the communication hole 28, and the communication hole 28 of the present embodiment may be provided on the side wall of the first pole 24. In addition, in other embodiments, the first pole 24 may be disposed on the second end cap 15 and the second pole 25 may be disposed on the first end cap 14.
In this embodiment, the energy storage battery cell 13 may be a battery cell, and the energy storage unit at this time is a battery energy storage unit. Of course, in other embodiments, the energy storage battery cell 13 may also be a capacitor battery cell, where the energy storage monomer is a capacitor energy storage monomer.
The present embodiment also proposes an energy storage module, which includes at least two cylindrical energy storage monomers as described above in this embodiment, and in two adjacent cylindrical energy storage monomers, a series connection or a parallel connection is implemented between a first pole 24 of one cylindrical energy storage monomer and a second pole 25 of another cylindrical energy storage monomer through a connection structure. As shown in fig. 4, a schematic structure of two energy storage units connected in series is shown, in which the first pole 24 is disposed on the first end cover 14, and the second pole 25 is disposed on the second end cover 15. In other embodiments, when two energy storage cells are connected in parallel, the first pole 24 of one of the energy storage cells may be disposed on the first end cap 14, and the second pole 25 may be disposed on the second end cap 15; the first pole 24 of the other energy storage unit is arranged on the second end cover 15, and the second pole 25 is arranged on the first end cover 14, which will not be described again.
The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.
Claims (16)
1. A drum energy storage monomer, characterized in that: the solar cell comprises a single body, wherein two ends of the single body are respectively and correspondingly provided with a first pole and a second pole, and the corresponding first pole and second pole are respectively provided with a connecting structure which is matched with each other;
the first pole and the second pole are both coaxially arranged with the monomer body, and a central through hole is arranged in the monomer body; and a connecting through hole coaxial with the central through hole is arranged in the second pole.
2. The cylindrical energy storage cell of claim 1, wherein: the connecting through hole is a conical hole, the geometric dimension of the conical hole gradually decreases along the direction of the second pole pointing to the first pole, and the first pole is a conical pole which can be spliced and matched with the conical hole; or, the inner wall of the connecting through hole and the outer wall of the first polar column are cylindrical surfaces, the connecting through hole is provided with a threaded hole, and the outer wall of the first polar column is provided with external threads which can be matched with the threaded hole.
3. The cylindrical energy storage cell of claim 1, wherein: the first pole and the second pole are respectively and annularly and uniformly distributed on the end surfaces of the two ends of the single body, and mutually matched plug-in structures are respectively arranged between the corresponding first pole and the corresponding second pole.
4. A cylindrical energy storing monomer according to any one of claims 1-3, wherein: the monomer body includes coaxial shell and inner shell that sets up, install energy storage electricity core in the space between shell and the inner shell.
5. The cylindrical energy storage cell of claim 4, wherein: a first end cover is arranged between one ends of the outer shell and the inner shell, and the first end cover is in welded connection with the outer shell and the inner shell, or the first end cover is integrally arranged between the outer shell and the inner shell.
6. The cylindrical energy storage cell of claim 5, wherein: a first current collecting disc is arranged between the energy storage battery core and the first end cover, and the first current collecting disc is used for enabling the first tab of the energy storage battery core to be electrically connected with the first end cover.
7. The cylindrical energy storage cell of claim 5, wherein: a second end cover is arranged between the other ends of the outer shell and the inner shell, a second current collecting disc is arranged between the energy storage battery core and the second end cover, and the second current collecting disc is used for enabling a second lug of the energy storage battery core to be electrically connected with the second end cover.
8. The cylindrical energy storing cell according to claim 7, wherein: an outer insulating piece and an inner insulating piece are respectively arranged between the second end cover and the outer shell and the inner shell.
9. The cylindrical energy storage cell of claim 8, wherein: and an outer sealing ring and an inner sealing ring are respectively arranged between the second end cover and the outer insulating piece and between the second end cover and the inner insulating piece.
10. The cylindrical energy storing cell according to claim 9, wherein: an external pressure groove for enhancing the sealing performance is arranged at the position, corresponding to the external sealing ring, on the shell; and an internal pressure groove for enhancing the sealing performance is arranged at the position of the inner shell corresponding to the internal sealing ring.
11. The cylindrical energy storage cell of claim 8, wherein: the outer insulating part and the inner insulating part are respectively provided with an outer limit part and an inner limit part which are in limit fit with each other between the end faces of the second end cover, the second end of the outer shell is provided with an outer curled edge which is in limit fit with the outer limit part, and the second end of the inner shell is provided with an inner curled edge which is matched with the inner limit part.
12. The cylindrical energy storing cell according to claim 7, wherein: the first pole is disposed on the first end cap and the second pole is disposed on the second end cap.
13. The cylindrical energy storing cell according to claim 12, wherein: a central through hole is formed in the monomer body, the central through hole is positioned in the inner shell and penetrates through the first pole, and a connecting through hole coaxial with the central through hole is formed in the second pole; and communication holes for introducing cooling medium are formed in the side walls of the first pole and/or the second pole.
14. The cylindrical energy storing cell according to claim 7, wherein: the first pole is disposed on the second end cap, and the second pole is disposed on the first end cap.
15. The cylindrical energy storage cell of claim 4, wherein: the energy storage battery cell is a battery cell or a capacitor cell.
16. An energy storage module, characterized in that: comprising at least two cylindrical energy storage monomers as claimed in any one of claims 1-15, wherein the first pole of one cylindrical energy storage monomer and the second pole of the other cylindrical energy storage monomer are connected in series or in parallel through a connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320141795.2U CN219643067U (en) | 2023-01-18 | 2023-01-18 | Cylinder energy storage monomer and energy storage module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320141795.2U CN219643067U (en) | 2023-01-18 | 2023-01-18 | Cylinder energy storage monomer and energy storage module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219643067U true CN219643067U (en) | 2023-09-05 |
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ID=87815191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320141795.2U Active CN219643067U (en) | 2023-01-18 | 2023-01-18 | Cylinder energy storage monomer and energy storage module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219643067U (en) |
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2023
- 2023-01-18 CN CN202320141795.2U patent/CN219643067U/en active Active
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