CN217881800U - Negative pole switching piece, battery apron and battery - Google Patents
Negative pole switching piece, battery apron and battery Download PDFInfo
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- CN217881800U CN217881800U CN202221818723.9U CN202221818723U CN217881800U CN 217881800 U CN217881800 U CN 217881800U CN 202221818723 U CN202221818723 U CN 202221818723U CN 217881800 U CN217881800 U CN 217881800U
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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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Abstract
The utility model relates to an energy battery technical field, concretely relates to negative pole switching piece, battery apron and battery, this negative pole switching piece includes: a copper connection adapted to connect with a negative tab of a battery; an aluminum connection portion connected to the copper connection portion, the aluminum connection portion adapted to be connected to a negative post of the battery; and the fusing structure is arranged on the aluminum connecting part. The utility model discloses a negative pole switching piece is because of copper aluminium complex forms, compares in full copper material, has alleviateed weight, and fusing structure can fuse when electric current or heat are too big simultaneously to play the guard action to the battery, promoted the security that the battery used.
Description
Technical Field
The utility model relates to an energy battery technical field, concretely relates to negative pole switching piece, battery apron and battery.
Background
Lithium ion or sodium ion electricity core on the existing market all adopt will roll up core and electrolyte and seal in the casing, transmit inside and outside electric energy through the switching piece. The existing cover plate design basically comprises a positive pole column and a negative pole column, wherein a positive pole adapter sheet is generally made of aluminum materials for being connected with an aluminum foil of a winding core positive pole and the positive pole column, and a negative pole adapter sheet is generally made of copper materials for being connected with a copper lug of a winding core negative pole and the negative pole column.
However, the negative adapter plate is made of copper materials, so that the weight of the negative adapter plate is increased, the energy density of the battery is reduced, and the negative adapter plate cannot be provided with a safe fusing structure due to the high melting point of the copper materials, so that the use safety of the battery is affected.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that negative pole keysets weight among the prior art is too big, the safety in utilization is low to a negative pole keysets, battery apron and battery that weight reduction, security are good are provided.
In order to solve the above problem, the utility model provides a negative pole keysets, include: a copper connection adapted to connect with a negative tab of a battery; an aluminum connection portion connected to the copper connection portion, the aluminum connection portion adapted to be connected to a negative post of the battery; and the fusing structure is arranged on the aluminum connecting part.
Optionally, the copper connection part is disposed on an upper surface and/or a lower surface of the aluminum connection part.
Optionally, the copper connecting portion is a spray coating sprayed to the upper surface and/or the lower surface of the aluminum connecting portion.
Optionally, the negative electrode adaptor piece further comprises a riveting structure, and the riveting structure is used for riveting and fixing the copper connecting part and the aluminum connecting part.
Optionally, the ends of the copper connection part and the aluminum connection part are friction welded.
The utility model also provides a battery cover plate, include the apron body and locate negative pole post on the apron body, battery cover plate still includes as above the negative pole switching piece, aluminium connecting portion with negative pole column connection.
Optionally, the negative electrode post is made of aluminum.
Optionally, the battery cover plate further comprises a positive pole column arranged on the cover plate body, and the material of the positive pole column is the same as that of the negative pole column.
The utility model also provides a battery, include to roll up the core and locate roll up the negative pole ear on the core, the battery still includes as above the battery apron, copper connecting portion with the negative pole ear is connected.
Optionally, the negative electrode tab is made of copper.
The utility model has the advantages of it is following:
the utility model discloses a negative pole switching piece, it is including the copper connecting portion and the aluminium connecting portion that are connected, the copper connecting portion are suitable for and are connected with the negative pole ear of battery, and the aluminium connecting portion are suitable for the negative pole post connection with the battery to set up the fusing structure on the aluminium connecting portion, the utility model discloses a negative pole switching piece is because of copper aluminium complex forms, compares in full copper material, has alleviateed weight, and fusing structure can fuse when electric current or heat are too big simultaneously to play the guard action to the battery, promoted the security that the battery used.
2. The utility model discloses a negative pole switching piece, copper connecting portion set up at the upper surface and/or the lower surface of aluminium connecting portion, specifically can be the spraying, also can be riveting fixed, simple process, processing convenience.
3. The utility model discloses a battery cover plate, including the apron body and locating the negative pole post on the apron body, still include the utility model discloses a negative pole switching piece, aluminium connecting portion and negative pole column connection have alleviateed battery cover plate's weight, have also improved the security of using simultaneously.
4. The utility model discloses a battery cover plate, negative pole post are the aluminium material, and when negative pole post and negative pole switching piece were connected, for aluminium is connected with kind of material, have reduced the processing requirement to producing the line equipment, simplify processing technology.
5. The utility model discloses a battery cover plate, still including locating the anodal post on the apron body, the anodal post is the same with the material of negative pole post to when anodal post, negative pole post assembly to the apron body on, can simplify the preparation degree of difficulty and reduce weight, save the processing resources, can also eliminate the compound utmost point post of copper aluminium and take place cracked risk man-hour.
6. The utility model discloses a battery, including rolling up the core and locating the negative pole ear on rolling up the core, still include the utility model discloses a battery cover plate, copper connecting portion are connected with the negative pole ear, have alleviateed the whole weight of battery, have also improved the safety in utilization of battery simultaneously.
7. The utility model discloses a battery, negative pole ear are the copper product matter, and when copper connecting portion were connected with the negative pole ear, for copper is connected with the same kind of material, reduced the processing requirement to producing line equipment, simplified processing technology.
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 shows a schematic top view structure diagram of a negative electrode interposer according to a first embodiment of the present invention;
fig. 2 is a schematic front view of a negative electrode interposer according to a first embodiment of the present invention;
fig. 3 is a schematic view illustrating a disassembled structure of a battery cover plate according to a first embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a partially disassembled structure of a battery according to a first embodiment of the present invention;
fig. 5 is a schematic front view of a negative electrode interposer according to a second embodiment of the present invention;
fig. 6 is a schematic top view of a negative electrode interposer according to a second embodiment of the present invention;
fig. 7 is a schematic view showing a partially enlarged structure of a negative electrode interposer according to a second embodiment of the present invention;
fig. 8 is a schematic top view of a negative electrode interposer according to a third embodiment of the present invention;
fig. 9 shows a schematic front view structure diagram of a negative electrode patch according to a third embodiment of the present invention;
fig. 10 shows an enlarged schematic view of the structure at a in fig. 9.
Description of reference numerals:
1. a copper connection portion; 2. an aluminum connection part; 3. a fusing structure; 4. riveting structure; 10. a cover plate body; 101. a negative pole post; 102. a positive post; 103. a positive electrode patch; 20. a winding core; 201. a negative tab; 202. and a positive tab.
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 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
As shown in fig. 1 and fig. 2, the present embodiment discloses a negative electrode interposer, which includes a copper connection portion 1, an aluminum connection portion 2, and a fusing structure 3, wherein the copper connection portion 1 is suitable for being connected to a negative electrode tab 201 of a battery, the aluminum connection portion 2 is connected to the copper connection portion 1, the aluminum connection portion 2 is suitable for being connected to a negative electrode post 101 of the battery, and the fusing structure 3 is disposed on the aluminum connection portion 2.
The utility model discloses a negative pole switching piece is because of copper aluminium complex forms, compares in full copper material, has alleviateed weight, and fusing structure 3 can fuse when electric current or heat are too big simultaneously to play the guard action to the battery, promoted the security that the battery used.
The structure of the negative electrode adaptor plate is described in detail below with reference to the accompanying drawings.
In this embodiment, the ends of the copper connection part 1 and the aluminum connection part 2 are friction-welded to ensure the connection strength therebetween. Specifically, the copper connection part 1 is provided with an escape groove to facilitate passage of the negative electrode tab 201 when connected. The negative pole keysets is two sections height settings, and higher part is convenient for be connected with the negative pole post 101 that is located high position, and lower part is convenient for be connected with the negative pole ear 201 that is located low position to improve the convenience of connecting.
Fusing structure 3 sets up on aluminium connecting portion 2, and because of the melting point of aluminium is lower than copper, consequently through establishing the negative pole switching piece into the compound form of copper connecting portion 1 and aluminium connecting portion 2, realized also can set up fusing structure 3 on the negative pole switching piece to protect the battery when electric current is transshipped or the short circuit, improve the safety in utilization.
Since the arrangement and protection principle of the fuse structure 3 are the prior art, the detailed description is omitted here.
As shown in fig. 3, this embodiment further discloses a battery cover plate, which includes a cover plate body 10 and a negative post 101 disposed on the cover plate body 10, the battery cover plate further includes the negative adapter of this embodiment, and the aluminum connecting portion 2 is connected to the negative post 101. The negative pole keysets has alleviateed the weight of battery apron in the form of setting up, has also improved the security of using simultaneously.
Specifically, negative pole post 101 is the aluminium material, and when negative pole post 101 and negative pole adaptor piece were connected, for aluminium homogeneous phase material is connected, has reduced the processing requirement to producing the line equipment, simplifies processing technology. Note that, in order to ensure the connection reliability, the negative electrode tab is laser welded to the inner wall surface of the cap plate body 10 and the negative electrode post 101.
Further, this battery cover still includes positive post 102 of locating on the apron body 10, and positive post 102 is the same with the material of negative pole post 101 to when positive post 102, negative pole post 101 assemble to apron body 10, can simplify the preparation degree of difficulty and reduce weight, save processing resources, can also eliminate the cracked risk of taking place of processing of copper aluminium composite post. In this embodiment, the positive post 102 and the negative post 101 are both made of aluminum, and are both fixed to the cover plate body 10 by riveting, and then the connection strength between the positive post 102 and the cover plate body 10 and the connection strength between the negative post 101 and the cover plate body 10 are enhanced by laser welding.
Therefore, in the battery cover plate of the embodiment, during processing, since the positive post 102 and the negative post 101 are made of the same material, when the positive post 102 and the negative post 101 are riveted on the cover plate body 10, the riveting parameters do not need to be switched, and the positive post 102 and the negative post 101 are laser-welded after riveting, so that the laser welding parameters do not need to be switched, the processing technology is simplified, the processing difficulty is reduced, and meanwhile, the situation that the copper-aluminum composite post is easily stressed and cracked during processing is avoided.
In addition, the battery cover plate further comprises a positive pole adapter plate 103, the positive pole adapter plate 103 is connected with the positive pole column 102, and the positive pole adapter plate 103 can be further connected with a positive pole lug 202 of the battery to realize positive pole current transmission. Optionally, the positive pole adapter plate 103 is an aluminum sheet, and when the aluminum sheet is connected with the positive pole 102 made of aluminum, the processing is convenient and the difficulty is low.
As shown in fig. 4, the present embodiment further discloses a battery, which includes a winding core 20 and a negative electrode tab 201 disposed on the winding core 20, and the battery further includes a battery cover plate of the present embodiment, and the copper connecting portion 1 is connected to the negative electrode tab 201, so that the overall weight of the battery is reduced, and the use safety of the battery is also improved. Here, it should be noted that the battery may be a sodium ion battery or other non-lithium ion battery.
Optionally, negative pole ear 201 is the copper product, when copper connecting portion 1 is connected with negative pole ear 201, is connected for copper with the same kind of material, has reduced the processing requirement to producing the line equipment, simplifies processing technology. Specifically, the copper connection part 1 and the negative electrode tab 201 of copper material may be welded by ultrasonic welding or laser welding.
It can be understood that the winding core 20 is further provided with a positive tab 202, and the positive tab 202 is connected with the positive adapter plate 103. In this embodiment, the positive tab 202 is made of aluminum, and when the positive tab 202 made of aluminum is connected to the positive adapter plate 103 made of aluminum, the processing is convenient, and the requirement on welding equipment is reduced.
After the winding core 20 is manufactured, the positive tab 202 is firstly ultrasonically welded with the positive adapter plate 103, the negative tab 201 and the negative adapter plate of the embodiment, the positive adapter plate 103 and the negative adapter plate are then respectively laser welded with the cover plate body 10 and the positive post 102 and the negative post 101 thereon, the welding of the process does not need to switch laser power and equipment, the positive and negative electrodes can be welded by adopting the same parameters, the processing procedure can be simplified, and the processing efficiency is improved.
Example two
Compared with the first embodiment, the difference of the present embodiment is: as shown in fig. 5 to 7, the copper connection part 1 is provided on the upper surface and/or the lower surface of the aluminum connection part 2 to increase the connection area therebetween and ensure connection reliability. In the present embodiment, the copper connection portions 1 are provided on the upper and lower surfaces of the aluminum connection portion 2. Specifically, copper connecting portion 1 is the spraying layer, and the spraying is to the upper surface and the lower surface of aluminium connecting portion 2, and processing is convenient, efficient.
Specifically, a layer of copper connecting portion 1 may be formed on the upper surface and the lower surface of the aluminum connecting portion 2 by electroplating or magnetron sputtering, the copper connecting portion 1 may be ultrasonically or laser-welded to the negative electrode tab 201, and the remaining portion of the aluminum connecting portion 2 not formed by the copper connecting portion 1 may be laser-welded to the negative electrode pillar 101 on the cap plate body 10.
It should be noted that, in other embodiments, the copper connection portion 1 may be selectively disposed on one of the upper surface and the lower surface of the aluminum connection portion 2, and is not limited to the solution of the embodiment.
EXAMPLE III
Compared with the two embodiments, the present embodiment is different in that: as shown in fig. 8 to 10, the negative electrode interposer of the present embodiment further includes a riveting structure 4, and the riveting structure 4 is used to rivet and fix the copper connecting portion 1 and the aluminum connecting portion 2, so as to reliably connect the copper connecting portion 1 and the aluminum connecting portion 2. Specifically, riveted structure 4 is equipped with a plurality ofly, and a plurality of riveted structure 4 are arranged in line and distribute on copper connecting portion 1 to improve copper connecting portion 1 and aluminum connecting portion 2's connection stability. The riveted structure 4 may be a rivet which is pierced through the copper connecting portion 1 and the aluminum connecting portion 2 to rivet-fix both.
To sum up, the utility model has the advantages that: the negative pole switching piece adopts copper connecting portion 1 and the compound formation of aluminium connecting portion 2, can realize with the welding of copper product's negative pole ear 201, can realize again with the welding of aluminium material's negative pole post 101, can also increase 3 protection electric core safety of fusing structure simultaneously on aluminium connecting portion 2, further simplifies processing technology and saves the resource, reduces weight.
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 negative electrode interposer, comprising:
a copper connection (1) adapted to be connected to a negative tab (201) of a battery;
an aluminium connection (2) connected to the copper connection (1), the aluminium connection (2) being adapted to be connected to a negative post (101) of the battery;
and the fusing structure (3) is arranged on the aluminum connecting part (2).
2. The negative electrode interposer according to claim 1, wherein the copper connection part (1) is provided on an upper surface and/or a lower surface of the aluminum connection part (2).
3. The negative electrode interposer according to claim 2, wherein the copper connection part (1) is a sprayed layer sprayed to the upper surface and/or the lower surface of the aluminum connection part (2).
4. The negative adapter plate according to claim 2, further comprising a riveting structure (4), wherein the riveting structure (4) is used for riveting and fixing the copper connecting part (1) and the aluminum connecting part (2).
5. The negative adapter plate according to claim 1, wherein the ends of the copper connection part (1) and the aluminum connection part (2) are friction welded.
6. A battery cover plate comprising a cover plate body (10) and a negative pole stud (101) provided on the cover plate body (10), characterized by further comprising a negative pole tab according to any one of claims 1 to 5, the aluminum connection part (2) being connected to the negative pole stud (101).
7. The battery cover plate according to claim 6, wherein the negative post (101) is aluminum.
8. The battery cover plate according to claim 7, further comprising a positive post (102) provided on the cover plate body (10), wherein the positive post (102) and the negative post (101) are made of the same material.
9. A battery comprising a winding core (20) and a negative electrode tab (201) provided on the winding core (20), characterized by further comprising a battery cover plate according to any one of claims 6 to 8, the copper connection part (1) being connected to the negative electrode tab (201).
10. The battery of claim 9, wherein the negative electrode tab (201) is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221818723.9U CN217881800U (en) | 2022-07-13 | 2022-07-13 | Negative pole switching piece, battery apron and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221818723.9U CN217881800U (en) | 2022-07-13 | 2022-07-13 | Negative pole switching piece, battery apron and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217881800U true CN217881800U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221818723.9U Active CN217881800U (en) | 2022-07-13 | 2022-07-13 | Negative pole switching piece, battery apron and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217881800U (en) |
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2022
- 2022-07-13 CN CN202221818723.9U patent/CN217881800U/en active Active
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