CN217468702U - Lithium ion battery top cover and battery - Google Patents
Lithium ion battery top cover and battery Download PDFInfo
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- CN217468702U CN217468702U CN202221515543.3U CN202221515543U CN217468702U CN 217468702 U CN217468702 U CN 217468702U CN 202221515543 U CN202221515543 U CN 202221515543U CN 217468702 U CN217468702 U CN 217468702U
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- ion battery
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Abstract
The utility model relates to a battery technology field, concretely relates to lithium ion battery top cap and battery. The lithium ion battery top cover comprises: polishing an aluminum sheet; the pole riveting block is attached to the first end face of the polished aluminum sheet; the pole body is attached to the second end face of the smooth aluminum sheet, and the connecting portion of the pole body penetrates through the smooth aluminum sheet and is riveted with the pole riveting block. The utility model provides a lithium ion battery top cover corresponds the mode of connecting at least three utmost point cylinder through adopting a utmost point post riveting piece, can effectively improve the aspect ratio of utmost point post riveting piece size, effectively increases the welding area of busbar and utmost point post riveting piece to improve utmost point post riveting piece's ability of overflowing. The overcurrent of the pole can be improved by three times or more, so that the battery using the lithium ion battery top cover structure provided by the embodiment has higher overcurrent capacity, and the battery has higher quick charging performance.
Description
Technical Field
The utility model relates to the technical field of batteries, concretely relates to lithium ion battery top cap and battery.
Background
With the increasing maturity of lithium ion battery technology, lithium ion batteries are widely used in the fields of electric vehicles and energy storage as power batteries, and the requirements on the service performance and safety of the lithium ion batteries are increasing. The lithium battery top cap is as an accessory in the lithium ion battery, and its effect makes interior external environment isolated play sealed effect through welding with the aluminum hull at first, and inside and outside circuit is connected to the second, carries the outside through the top cap utmost point post to battery internal current, plays the water conservancy diversion effect.
However, the battery cover plate of the conventional structure generally has only one pole cylinder and one pole riveting block connected thereto for transmitting the current inside the battery to the outside of the battery. The battery with the traditional structure generally has a small volume and can meet the overcurrent requirement, but for the characteristic of the long and thin structure of the blade battery, the battery thickness is thin, so that the width size of the terminal post riveting block is insufficient, and the overcurrent capacity of a battery core is weak; if the length of the pole riveting block is simply increased, stress exists after the riveting block is riveted with the pole body, the two ends of the riveting block are warped, and the welding of the bus bar is adversely affected by the flatness.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the poor defect of the battery apron over-current capability of traditional structure among the prior art to a lithium ion battery top cap of the ability of overflowing of improvement electricity core is provided.
The utility model discloses another technical problem that solves lies in overcoming the poor defect of battery apron over-current capability of traditional structure among the prior art to a battery that improves the over-current capability of electric core is provided.
In order to solve the technical problem, the utility model provides a pair of lithium ion battery top cap, include:
polishing an aluminum sheet;
the pole riveting block is attached to the first end face of the polished aluminum sheet;
the pole body is attached to the second end face of the smooth aluminum sheet, and the connecting portion of the pole body penetrates through the smooth aluminum sheet and is riveted with the pole riveting block.
Optionally, the post riveting block is provided with riveting holes corresponding to the number of the post bodies, and the connecting portion of each post body is connected with one riveting hole of the post riveting block.
Optionally, the number of the pole columns is three, and the three pole columns are connected with one pole column riveting block at the same time.
Optionally, the lithium ion battery top cover further includes: and the explosion-proof valve is arranged on the smooth aluminum sheet and is positioned on the first side of the pole post riveting block along the width direction.
Optionally, the second side of utmost point post riveting piece along width direction with the interval between the second side of light aluminum sheet along width direction is A2, the width of light aluminum sheet is A1, satisfies the relational expression: A2/A1 is more than or equal to 0.02 and less than or equal to 0.3.
Optionally, the width of the terminal riveting block is A3, the width of the aluminum flake is a1, and the relationship is satisfied: A3/A1 is more than or equal to 0.3 and less than or equal to 0.8.
Optionally, the thickness of the pole riveting block is B2, the thickness of the smooth aluminum sheet is B1, and the following relation is satisfied: B2/B1 is more than or equal to 0.4 and less than or equal to 0.9.
Optionally, the lithium ion battery top cover further includes: the upper plastic is arranged between the first end face of the polished aluminum sheet and the pole riveting block;
and the lower plastic is arranged between the second end face of the smooth aluminum sheet and the pole column body.
Optionally, at least two connecting portions extend from the main body portion of each pole cylinder, the pole riveting block is provided with riveting holes corresponding to the number of the connecting portions, and each connecting portion is connected with one riveting hole of the pole riveting block.
The utility model provides a battery, include:
a battery body;
and the lithium ion battery top cover is arranged at least one end of the battery body along the length direction.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a lithium ion battery top cover corresponds the mode of connecting at least three utmost point cylinder through adopting a utmost point post riveting piece, can effectively improve the aspect ratio of utmost point post riveting piece size, effectively increases the welding area of busbar and utmost point post riveting piece to improve utmost point post riveting piece's ability of overflowing. And three and above utmost point cylinders compare in the form of single utmost point cylinder, can make the excessive current of utmost point post improve three times and more to make the battery that has used the lithium ion battery top cap structure that this embodiment provided have higher overcurrent capacity, make the battery have higher quick charge performance.
2. The utility model provides a lithium ion battery top cap through the reasonable ratio that sets up A2A 1, can guarantee that utmost point post riveting piece has reasonable interval with smooth aluminum sheet tip to can guarantee the safety in utilization of battery on the basis of the ability that overflows that improves electric core.
3. The utility model provides a lithium ion battery top cap, through the ratio of the width of rationally setting up utmost point post riveting piece and the width of smooth aluminum sheet to guarantee the ability of overflowing of lithium ion battery top cap, make the battery have higher fast and fill the performance.
4. The utility model provides a lithium ion battery top cap, through setting up it is formed with at least two to extend on the main part of utmost point cylinder connecting portion to increase the quantity of the connecting portion on the single utmost point post body, thereby can improve the area of contact of single utmost point cylinder and utmost point post riveting piece, improve assembly efficiency, make the battery that has used the lithium ion battery top cap structure that this embodiment provided have higher ability of overflowing, make the battery have higher quick-charging performance.
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 front view of a lithium ion battery top cover according to the present invention;
fig. 2 is a schematic diagram of the back side of the lithium ion battery top cover of the present invention;
fig. 3 is a schematic cross-sectional view of the lithium ion battery top cover of the present invention;
fig. 4 is a top view of the lithium ion battery top cover of the present invention;
fig. 5 is a schematic view of the installation of the battery body and the lithium ion battery top cover of the present invention;
fig. 6 is a schematic structural view of a pole body of the present invention;
fig. 7 is a schematic structural view of another pole column of the present invention;
description of reference numerals:
10-a lithium ion battery top cover, 20-a battery body;
1-smooth aluminum sheet, 2-pole riveting block, 3-pole body, 31-main body part, 32-connecting part, 4-upper plastic, 5-lower plastic and 6-explosion-proof valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example one
With reference to fig. 1-4 and fig. 6, the lithium ion battery top cover provided in this embodiment includes:
polishing an aluminum sheet 1;
the pole riveting block 2 is attached to the first end face of the smooth aluminum sheet 1;
at least three utmost point cylinder 3, the main part 31 of utmost point cylinder 3 with the laminating of the second end terminal surface of light aluminum sheet 1 sets up, the connecting portion 32 of utmost point cylinder 3 runs through light aluminum sheet 1 and with utmost point post riveting block 2 is riveted mutually.
Optionally, the pole cylinder 3 may be connected to the pole riveting block 2 by riveting, and then laser welding may be performed along the riveting edge, so that connection internal resistance between the pole cylinder 3 and the pole riveting block 2 may be reduced.
Optionally, in this embodiment, the number of the pole bodies 3 of the same lithium ion battery top cover is at least three, and the polarities of the at least three pole bodies 3 are the same, for example, the polarities of the at least three pole bodies 3 on the same lithium ion battery top cover may be positive poles at the same time, or the polarities of the at least three pole bodies 3 on the same lithium ion battery top cover may be negative poles at the same time.
Through setting up at least three utmost point cylinder 3, can increase the total volume of utmost point cylinder 3, increase the sum of the cross-sectional area of utmost point cylinder 3 to increase utmost point cylinder 3 and the inside connection area of battery, thereby can improve the current capacity of electric core, can improve the working property of battery.
The lithium ion battery top cover that this embodiment provided corresponds the mode of connecting at least three utmost point cylinder 3 through adopting a utmost point post riveting piece 2, can effectively improve the aspect ratio of utmost point post riveting piece size, effectively increases busbar and utmost point post riveting piece 2's welding area to improve utmost point post riveting piece 2's ability of overflowing. And three or more than 3 pole columns compare in the form of single pole column, can make the excessive current of utmost point post improve three times or more to make the battery that has used the lithium ion battery top cap structure that this embodiment provided have higher overcurrent ability, make the battery have higher quick charge performance.
Specifically, the post riveting block 2 is provided with riveting holes corresponding to the number of the post bodies 3, and the connecting portion 32 of each post body 3 is connected with one riveting hole of the post riveting block 2.
Through making utmost point post riveting piece 2 go up be provided with the corresponding riveting hole of 3 quantity of utmost point post body, and make every the connecting portion 32 of utmost point post body 3 with a riveting hole of utmost point post riveting piece 2 is connected to can guarantee the effective connection of three and above utmost point post body 3 and utmost point post riveting piece 2, increase utmost point post riveting piece 2 and utmost point post body 3's area of contact, thereby can improve the ability of overflowing of electric core, can improve the working property of battery.
Specifically, the number of the pole bodies 3 is three, and the three pole bodies 3 are simultaneously connected with one pole riveting block 2.
Optionally, the three pole cylinders 3 are arranged at intervals, so that the pole cylinders 3 can be arranged reasonably, and mutual interference can be avoided.
Specifically, the lithium ion battery top cover further comprises: explosion-proof valve 6, set up in on the smooth aluminum sheet 1, explosion-proof valve 6 is located utmost point post riveting block 2 is along width direction's first side.
Optionally, an explosion-proof valve protection film may be disposed on the explosion-proof valve 6. When the battery is out of control due to heat, the explosion-proof valve 6 can quickly ventilate, release pressure and prevent explosion, thereby solving the problem of self-explosion of the battery to a certain extent.
Specifically, the second side of utmost point post riveting piece 2 along width direction with the interval between the second side of aluminium flake 1 along width direction is A2, the width of aluminium flake 1 is A1, satisfies the relational expression: A2/A1 is more than or equal to 0.02 and less than or equal to 0.3. As an alternative example, A2/A1 may be 0.1 or 0.15 or 0.2 or 0.25, etc. Through the ratio of reasonable setting A2A 1, can guarantee that utmost point post riveting piece 2 has reasonable interval with smooth aluminum sheet 1 tip to can guarantee the safety in utilization of battery on the basis of the ability of overflowing that improves electric core.
Specifically, the width of the pole riveting block 2 is A3, the width of the aluminizer sheet 1 is a1, and the relation is satisfied: A3/A1 is more than or equal to 0.3 and less than or equal to 0.8. As an optional embodiment, the value of A3/a1 can be 0.4, 0.5, 0.6 or 0.7, and the ratio of the width of the terminal post riveting block 2 to the width of the aluminum flake 1 is reasonably set, so that the overcurrent capacity of the top cover of the lithium ion battery is ensured, and the battery has higher quick charging performance.
Specifically, the thickness of the pole riveting block 2 is B2, the thickness of the aluminizer sheet 1 is B1, and the following relation is satisfied: B2/B1 is more than or equal to 0.4 and less than or equal to 0.9. As an optional embodiment, the value of B2/B1 can be 0.4 or 0.5 or 0.6 or 0.7, through the ratio of the thickness of the terminal riveting block 2 to the thickness of the smooth aluminum sheet 1, thereby ensuring the proportion of the terminal riveting block 2 to the thickness of the smooth aluminum sheet 1 in the thickness direction, ensuring that the terminal riveting block 2 has enough width, further ensuring the overcurrent capacity of the top cover of the lithium ion battery, and ensuring that the charging and discharging performance of the battery is good.
Specifically, the lithium ion battery top cover further comprises: the upper plastic 4 is arranged between the first end face of the polished aluminum sheet 1 and the pole riveting block 2;
and the lower plastic 5 is arranged between the second end face of the smooth aluminum sheet 1 and the polar column body 3.
Through setting up plastic 4 and lower plastic 5, can play the effect of insulation protection, guarantee the first end terminal surface of smooth aluminum sheet 1 with it is insulating each other between the utmost point post riveting piece 2, and the second end terminal surface of smooth aluminum sheet 1 with it is insulating each other between the utmost point cylinder 3, can guarantee the operational reliability and the safety in utilization of lithium ion battery top cap 10.
As an alternative implementation form, as shown in fig. 7, at least two connection portions 32 are formed on the main body portion 31 of each pole cylinder 3 in an extending manner, the pole riveting block 2 is provided with riveting holes corresponding to the number of the connection portions 32, and each connection portion 32 is connected to one riveting hole of the pole riveting block 2.
Through setting up extend on the main part 31 of utmost point cylinder 3 and be formed with at least two connecting portion 32 to increase the quantity of connecting portion 32 on the single utmost point cylinder 3, thereby can improve the area of contact of single utmost point cylinder 3 and utmost point post riveting piece 2, improve assembly efficiency, make the battery that has used the lithium ion battery top cap structure that this embodiment provided have higher current capacity, make the battery have higher fast chargeability.
Example two
As shown in fig. 5, the present embodiment provides a battery including:
a battery body 20;
and the lithium ion battery top cover according to the first embodiment, which is arranged at least one end of the battery body 20 along the length direction.
As optional, the battery can be the blade battery, and lithium ion battery top cap 10 can be in the same place with the aluminum hull welded connection of battery body 20 to keep apart the inner structure and the external world of battery, the utmost point post body 3 keeps away from utmost point post riveting block 2's one end can be connected with the utmost point ear electricity of battery, utmost point post riveting block 2 can be connected with the outer structure electricity of battery, and lithium ion battery top cap 10 can carry the outside with the inside electric current of battery.
In the present embodiment, the battery body 20 is provided with a lithium ion battery top cover as a positive electrode and a lithium ion battery top cover as a negative electrode at both ends in the longitudinal direction. Therefore, the over-current capability of the anode and the cathode is ensured simultaneously, and the battery has higher quick-charging performance.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A lithium ion battery top cover, comprising:
a polished aluminum sheet (1);
the pole riveting block (2) is attached to the first end face of the smooth aluminum sheet (1);
at least three utmost point cylinder (3), main part (31) of utmost point cylinder (3) with the laminating of the second end terminal surface of light aluminum sheet (1) sets up, connecting portion (32) of utmost point cylinder (3) run through light aluminum sheet (1) and with utmost point post riveting block (2) are riveted mutually.
2. The lithium ion battery top cover according to claim 1, wherein the pole riveting block (2) is provided with riveting holes corresponding to the number of the pole cylinders (3), and the connecting part (32) of each pole cylinder (3) is connected with one riveting hole of the pole riveting block (2).
3. The lithium ion battery top cover according to claim 2, characterized in that the number of the pole bodies (3) is three, and three pole bodies (3) are simultaneously connected with one pole riveting block (2).
4. The li-ion battery top cover of claim 1, further comprising: explosion-proof valve (6), set up in on smooth aluminum sheet (1), explosion-proof valve (6) are located utmost point post riveting block (2) are along width direction's first side.
5. The lithium ion battery top cover according to claim 4, wherein the distance between the second side of the pole riveting block (2) in the width direction and the second side of the aluminum flake (1) in the width direction is A2, the width of the aluminum flake (1) is A1, and the relation is satisfied: A2/A1 is more than or equal to 0.02 and less than or equal to 0.3.
6. The lithium ion battery top cover according to any one of claims 1 to 5, wherein the width of the post riveting block (2) is A3, the width of the aluminum flake (1) is A1, and the relation is satisfied: A3/A1 is more than or equal to 0.3 and less than or equal to 0.8.
7. The lithium ion battery top cover according to any one of claims 1 to 5, wherein the thickness of the pole riveting block (2) is B2, the thickness of the aluminum flake (1) is B1, and the relation is satisfied: B2/B1 is more than or equal to 0.4 and less than or equal to 0.9.
8. The li-ion battery top cover of any of claims 1-5, further comprising: the upper plastic (4) is arranged between the first end face of the polished aluminum sheet (1) and the pole riveting block (2);
and the lower plastic (5) is arranged between the second end face of the smooth aluminum sheet (1) and the pole column body (3).
9. The lithium ion battery top cover according to claim 1, wherein at least two connecting portions (32) extend from the main body portion (31) of each of the pole bodies (3), the pole riveting block (2) is provided with a number of riveting holes corresponding to the number of the connecting portions (32), and each connecting portion (32) is connected with one riveting hole of the pole riveting block (2).
10. A battery, comprising:
a battery body (20);
and the lithium ion battery top cover of any one of the claims 1 to 9 arranged at least one end of the battery body (20) along the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221515543.3U CN217468702U (en) | 2022-06-15 | 2022-06-15 | Lithium ion battery top cover and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221515543.3U CN217468702U (en) | 2022-06-15 | 2022-06-15 | Lithium ion battery top cover and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217468702U true CN217468702U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221515543.3U Active CN217468702U (en) | 2022-06-15 | 2022-06-15 | Lithium ion battery top cover and battery |
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| CN (1) | CN217468702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780055A (en) * | 2023-08-28 | 2023-09-19 | 星恒电源股份有限公司 | Blade battery shell, blade battery and welding method of blade battery |
-
2022
- 2022-06-15 CN CN202221515543.3U patent/CN217468702U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780055A (en) * | 2023-08-28 | 2023-09-19 | 星恒电源股份有限公司 | Blade battery shell, blade battery and welding method of blade battery |
| CN116780055B (en) * | 2023-08-28 | 2023-10-27 | 星恒电源股份有限公司 | Blade battery shell, blade battery and welding method of blade battery |
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