CN217134514U - Cylindrical battery and battery module - Google Patents
Cylindrical battery and battery module Download PDFInfo
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- CN217134514U CN217134514U CN202221017117.7U CN202221017117U CN217134514U CN 217134514 U CN217134514 U CN 217134514U CN 202221017117 U CN202221017117 U CN 202221017117U CN 217134514 U CN217134514 U CN 217134514U
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- battery
- cover plate
- current collecting
- sealing ring
- hole
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Abstract
The utility model provides a cylindrical battery and a battery module, which relates to the technical field of cylindrical batteries, and the cylindrical battery comprises a battery shell, a battery cell main body, a first current collecting disc, a sealing ring and a cover plate; the sealing ring and the cover plate are sequentially arranged in the installation cavity, a sealing ring is arranged on one side of the sealing ring, which is far away from the electric core main body, the sealing ring is sleeved outside the cover plate, and the sealing ring is used for completely isolating the cover plate from the battery shell; be provided with on the sealing washer and dodge the hole, first current collecting plate through dodge the hole with the apron is connected. The utility model provides a cylinder battery's positive pole is drawn forth for the apron, realizes apron and battery case's isolation through the sealing washer, can simplify the mechanism of cylinder battery like this, reduces the process step, reduces the manufacturing cost of cylinder battery, has saved the cost of anodal utmost point post, has cancelled anodal sealed process, has improved sealed reliability.
Description
Technical Field
The utility model belongs to the technical field of the technique of cylinder battery and specifically relates to a cylinder battery and battery module are related to.
Background
With the development of electric automobiles, cost control of batteries is always a pain point in the industry, and cost control of many battery manufacturers cannot lead to profit failure or even loss, thereby causing yield failure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cylinder battery and battery module to the cost of alleviating the battery constantly improves, has reduced the technical problem of product competitiveness.
In a first aspect, the utility model provides a cylindrical battery, which comprises a battery shell, a battery cell main body, a first current collecting disc, a sealing ring and a cover plate;
a first current collecting disc is welded at one end of the electric core main body, the battery shell is provided with an installation cavity, an upper opening communicated with the installation cavity is formed in the battery shell, the electric core main body is arranged in the installation cavity, and one end, provided with the first current collecting disc, of the electric core main body faces the upper opening;
the sealing ring and the cover plate are sequentially arranged in the installation cavity, a sealing ring is arranged on one side of the sealing ring, which is far away from the electric core main body, the sealing ring is sleeved outside the cover plate, and the sealing ring is used for completely isolating the cover plate from the battery shell;
be provided with on the sealing washer and dodge the hole, first current collecting plate through dodge the hole with the apron is connected.
In an optional implementation mode, a connecting sheet is arranged on the first current collecting disc, one end of the connecting sheet is connected with the first current collecting disc, and the other end of the connecting sheet penetrates through the avoiding hole to be welded with the cover plate.
In an optional embodiment, a second current collecting disc is arranged at one end of the cell main body, which is far away from the first current collecting disc, and the second current collecting disc is welded to the bottom of the battery shell.
In an alternative embodiment, the cover plate is provided with a liquid injection hole, and the sealing ring is provided with a first through hole corresponding to the liquid injection hole.
In an optional embodiment, a sealing aluminum nail is arranged in the liquid injection hole of the cover plate, a mounting hole is formed in the sealing aluminum nail, and an explosion-proof valve is arranged on the mounting hole.
In an optional embodiment, one end of the cell main body connected to the first current collecting disc is a positive end, and one end of the cell main body connected to the second current collecting disc is a negative end.
In an alternative embodiment, the cover plate is made of aluminum.
In an optional embodiment, the cover plate is provided with an explosion-proof hole, and the sealing ring is provided with a second through hole corresponding to the explosion-proof hole.
In an alternative embodiment, a rolling groove is provided on the battery case, the rolling groove is located between the cell main body and the cover plate, and the rolling groove is used for keeping a space between the cell main body and the cover plate.
The utility model provides a cylinder battery's positive pole is drawn forth for the apron, realizes apron and battery case's isolation through the sealing washer, can simplify the mechanism of cylinder battery like this, reduces the process step, reduces the manufacturing cost of cylinder battery, has saved the cost of anodal utmost point post, has cancelled anodal sealed process, has improved sealed reliability.
In a second aspect, the present invention provides a battery module including any one of the above embodiments.
The utility model also provides a battery module, this battery module adopt foretell cylinder battery to have all beneficial effects of cylinder battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cylindrical battery according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view A-A of the cylindrical battery shown in FIG. 1;
FIG. 3 is a partially enlarged view B of a schematic sectional structure A-A of the cylindrical battery shown in FIG. 2;
FIG. 4 is a partially enlarged view C of a schematic sectional structure A-A of the cylindrical battery shown in FIG. 2;
fig. 5 is an exploded view of a cylindrical battery according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view illustrating the connection between the cap plate and the gasket of the cylindrical battery shown in fig. 5.
An icon: 100-a battery case; 200-a cover plate; 300-a cell body; 400-rolling groove; 500-sealing ring; 501-sealing ring; 502-avoidance holes; 600-a first via; 700-a first collector tray; 701-connecting sheets; 800-a second collector tray; 900-liquid injection hole; 110-sealing aluminum nails; 120-mounting holes; 130-explosion-proof valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1 to 6, the present invention provides a cylindrical battery, which includes a battery case 100, a cell main body 300, a first current collecting plate 700, a sealing ring 500, and a cover plate 200;
a first current collecting disc 700 is welded at one end of the cell main body 300, the battery casing 100 is provided with an installation cavity, an upper opening communicated with the installation cavity is formed in the battery casing 100, the cell main body 300 is arranged in the installation cavity, and one end, provided with the first current collecting disc 700, of the cell main body 300 faces the upper opening;
the sealing ring 500 and the cover plate 200 are sequentially installed in the installation cavity, a sealing ring 501 is arranged on one side of the sealing ring 500, which is far away from the battery cell main body 300, the sealing ring 501 is sleeved outside the cover plate 200, and the sealing ring 500 is used for completely isolating the cover plate 200 from the battery shell 100;
an avoiding hole 502 is formed in the sealing ring 500, and the first collecting plate 700 is connected to the cover plate 200 through the avoiding hole 502.
In some embodiments, the cylindrical battery includes a cell body 300, a first current collecting plate 700 is welded to one end of the cell body 300, the first current collecting plate 700 is welded to a cover plate 200, and the cover plate 200 is isolated from the battery case 100 by a sealing ring 500, so that the positive electrode of the cell body 300 is led out as the cover plate 200, a positive electrode post is omitted, a positive electrode sealing process is omitted, and sealing reliability is improved.
The sealing ring 500 is provided with a sealing ring 501, the sealing ring 501 is sleeved on the cover plate 200, and when the battery shell 100 is sealed, the sealing ring 501 wraps the edge of the cover plate 200, so that the battery shell 100 is completely separated from the cover plate 200; the material of the sealing ring 500 is an insulating material, such as polytetrafluoroethylene, which is a material of the sealing ring 500 used in the conventional lithium battery. The sealing ring 500 insulates the cap plate 200 from the battery case 100.
In order not to affect the connection between the cover plate 200 and the first current collecting plate 700, a relief hole 502 is provided on the sealing ring 500, so that the first current collecting plate 700 and the cover plate 200 can be welded together, i.e. the positive electrode lead-out is realized as the cover plate 200.
Referring to fig. 5, in an alternative embodiment, a connection plate 701 is disposed on the first current collecting plate 700, one end of the connection plate 701 is connected to the first current collecting plate 700, and the other end of the connection plate 701 passes through the avoiding hole 502 and is welded to the cover plate 200.
In order to facilitate the connection between the first current collecting plate 700 and the cap plate 200, a connection plate 701 is disposed on the first current collecting plate 700, one end of the connection plate 701 is connected to the first current collecting plate 700, and the other end is welded to the cap plate 200 through the relief hole 502, and when the cap plate 200 is to be mounted on the battery case 100, the connection plate 701 can be bent.
In an alternative embodiment, a second current collecting plate 800 is disposed at an end of the cell body 300 away from the first current collecting plate 700, and the second current collecting plate 800 is welded to the bottom of the battery case 100.
In some embodiments, a first current collecting plate 700 is welded to one end of the cell main body 300, a second current collecting plate 800 is welded to the other end of the cell main body 300, the battery case 100 is made of steel, when the cell main body 300 is installed in the battery case 100, the second current collecting plate 800 is welded to the bottom of the battery case 100, and thus the second current collecting plate 800 is firmly connected to the battery case 100, that is, the battery case 100 is a negative electrode leading-out terminal, the cost of a negative electrode pole is saved, a negative electrode sealing process is omitted, and the sealing reliability is improved.
Referring to fig. 6, in an alternative embodiment, the lid plate 200 is provided with a pour hole 900, and the packing 500 is provided with a first through hole 600 corresponding to the pour hole 900.
In an alternative embodiment, a sealing aluminum nail 110 is disposed in the liquid injection hole 900 of the cover plate 200, a mounting hole 120 is disposed on the sealing aluminum nail 110, and an explosion-proof valve 130 is disposed on the mounting hole 120.
In some embodiments, the cover plate 200 is provided with the injection hole 900, and the sealing ring 500 is provided with the first through hole 600 corresponding to the injection hole 900, so that the sealing ring 500 is prevented from affecting the injection of the electrolyte from the injection hole 900 into the battery case 100.
The sealing aluminum nail 110 can be further provided with a mounting hole 120, the explosion-proof valve 130 is mounted in the mounting hole 120, the liquid injection hole 900 is sealed, and meanwhile, the explosion-proof valve 130 is mounted, so that only one liquid injection hole 900 is arranged on the cover plate 200, the hole for mounting the explosion-proof valve 130 is omitted, and welding of the explosion-proof valve 130 is reduced.
In an alternative embodiment, one end of the cell body 300 connected to the first current collecting plate 700 is a positive end, and one end of the cell body 300 connected to the second current collecting plate 800 is a negative end.
In an alternative embodiment, the cover plate 200 is made of aluminum.
In an alternative embodiment, the cover plate 200 is provided with an explosion-proof hole, and the seal ring 500 is provided with a second through hole corresponding to the explosion-proof hole.
In some embodiments, the cover plate 200 is provided with an explosion-proof hole, the sealing ring 500 is provided with a second through hole corresponding to the explosion-proof hole, the cover plate 200 is provided with both the explosion-proof hole and the injection hole 900, the sealing ring 500 is provided with a second through hole corresponding to the explosion-proof hole and a first through hole 600 corresponding to the injection hole 900.
Referring to fig. 3, in an alternative embodiment, a rolling groove 400 is provided on the battery case 100, the rolling groove 400 is located between the cell main body 300 and the cover plate 200, and the rolling groove 400 is used for keeping a space between the cell main body 300 and the cover plate 200.
After the first current collecting disc 700 is welded to the cell main body 300, the first current collecting disc is installed in the battery shell 100, the sealing ring 500 and the cover plate 200 are sequentially installed, and then the battery shell 100 is sealed in a rolling groove 400 mode, so that the sealing of the battery shell 100 is realized, and compared with the welding adopted in the prior art, the risk of welding introduced welding slag is reduced.
The rolling groove 400 fixedly connects the cap plate 200 to the battery case 100, and the rolling groove 400 is located at the lower end of the cap plate 200 and can serve to restrict the position of the cap plate 200.
The utility model provides a cylinder battery's positive pole is drawn forth and is lapped 200, realizes lapping 200 and battery case 100's isolation through sealing washer 500, can simplify the mechanism of cylinder battery like this, reduces the process step, reduces the manufacturing cost of cylinder battery, has saved the cost of anodal utmost point post, has cancelled anodal sealed process, has improved sealed reliability.
In a second aspect, the present invention provides a battery module including any one of the above embodiments.
The utility model also provides a battery module, this battery module adopt foretell cylinder battery to have all beneficial effects of cylinder battery.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A cylindrical battery is characterized by comprising a battery shell (100), a battery core main body (300), a first current collecting disc (700), a sealing ring (500) and a cover plate (200);
a first current collecting disc (700) is welded at one end of the battery core main body (300), the battery shell (100) is provided with an installation cavity, an upper opening communicated with the installation cavity is formed in the battery shell (100), the battery core main body (300) is arranged in the installation cavity, and one end, provided with the first current collecting disc (700), of the battery core main body (300) faces the upper opening;
the sealing ring (500) and the cover plate (200) are sequentially installed in the installation cavity, a sealing ring (501) is arranged on one side, away from the battery cell main body (300), of the sealing ring (500), the sealing ring (501) is sleeved outside the cover plate (200), and the sealing ring (500) is used for completely isolating the cover plate (200) from the battery shell (100);
be provided with on sealing washer (500) and dodge hole (502), first current collecting plate (700) through dodging hole (502) with apron (200) are connected.
2. The cylindrical battery according to claim 1, wherein a connecting sheet (701) is arranged on the first current collecting disc (700), one end of the connecting sheet (701) is connected with the first current collecting disc (700), and the other end of the connecting sheet passes through the avoiding hole (502) and is welded with the cover plate (200).
3. The cylindrical battery as claimed in claim 2, wherein a second current collecting plate (800) is arranged at one end of the battery core body (300) far away from the first current collecting plate (700), and the second current collecting plate (800) is welded with the bottom of the battery shell (100).
4. The cylindrical battery according to claim 1, wherein the lid plate (200) is provided with a liquid injection hole (900), and the seal ring (500) is provided with a first through hole (600) corresponding to the liquid injection hole (900).
5. The cylindrical battery according to claim 1, wherein a sealing aluminum nail (110) is arranged in the liquid injection hole (900) of the cover plate (200), a mounting hole (120) is arranged on the sealing aluminum nail (110), and an explosion-proof valve (130) is arranged on the mounting hole (120).
6. The cylindrical battery as claimed in claim 2, wherein the end of the cell body (300) connected with the first current collecting plate (700) is a positive end, and the end of the cell body (300) connected with the second current collecting plate (800) is a negative end.
7. The cylindrical battery according to claim 1, wherein the material of the cover plate (200) is aluminum.
8. The cylindrical battery according to claim 1, wherein the cap plate (200) is provided with an explosion-proof hole, and the seal ring (500) is provided with a second through hole corresponding to the explosion-proof hole.
9. The cylindrical battery according to claim 1, wherein a rolling groove (400) is formed in the battery case (100), the rolling groove (400) is located between the cell main body (300) and the cover plate (200), and the rolling groove (400) is used for keeping a space between the cell main body (300) and the cover plate (200).
10. A battery module comprising the cylindrical battery according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221017117.7U CN217134514U (en) | 2022-04-28 | 2022-04-28 | Cylindrical battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221017117.7U CN217134514U (en) | 2022-04-28 | 2022-04-28 | Cylindrical battery and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217134514U true CN217134514U (en) | 2022-08-05 |
Family
ID=82651517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221017117.7U Active CN217134514U (en) | 2022-04-28 | 2022-04-28 | Cylindrical battery and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217134514U (en) |
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2022
- 2022-04-28 CN CN202221017117.7U patent/CN217134514U/en active Active
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