CN219717188U - Battery connection piece, battery module and battery package - Google Patents
Battery connection piece, battery module and battery package Download PDFInfo
- Publication number
- CN219717188U CN219717188U CN202321338867.9U CN202321338867U CN219717188U CN 219717188 U CN219717188 U CN 219717188U CN 202321338867 U CN202321338867 U CN 202321338867U CN 219717188 U CN219717188 U CN 219717188U
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- Prior art keywords
- battery
- main
- connecting piece
- sheet
- metal material
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- 239000007769 metal material Substances 0.000 claims abstract description 40
- 210000001503 joint Anatomy 0.000 claims abstract description 32
- 239000011229 interlayer Substances 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 33
- 239000010410 layer Substances 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery connecting sheet, a battery module and a battery pack, which comprises a main connecting sheet connected with the battery module; the middle connecting piece is connected between the two ends of the main connecting piece; the connecting parts are connected to the two ends of the middle connecting sheet; a hollow interlayer arranged on one side of each connecting part facing the main connecting sheet; the butt joint parts are connected to the end parts of the main connecting pieces, which are close to the middle connecting pieces, and each butt joint part is welded in the opposite hollow interlayer; the main connecting piece and the butt joint part are made of a first metal material, the middle connecting piece and the connecting part are made of a second metal material, and the first metal material and the second metal material are made of different metal materials. The utility model can improve the quality and the conductivity of the battery connecting sheet.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery connecting sheet, a battery module and a battery pack.
Background
The single cells of the battery module are connected in series or in parallel through battery connecting sheets. At present, the battery connecting sheet is generally formed by welding and then compounding different metal materials. However, the welding area of the battery connecting piece is easy to have welding quality defects, and the quality and the conductivity of the battery connecting piece are adversely affected.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a battery connecting sheet, a battery module and a battery pack, which can improve the quality and the electrical conductivity of the battery connecting sheet.
To achieve the above and other related objects, the present utility model provides a battery connecting sheet comprising:
the main connecting sheet is connected with the battery module;
the middle connecting piece is connected between the two ends of the main connecting piece;
the connecting parts are connected to the two ends of the middle connecting sheet;
a hollow interlayer arranged on one side of each connecting part facing the main connecting sheet; and
the butt joint parts are connected to the end parts of the main connecting pieces, which are close to the middle connecting pieces, and each butt joint part is welded in the opposite hollow interlayer;
the main connecting piece and the butt joint part are made of a first metal material, the middle connecting piece and the connecting part are made of a second metal material, and the first metal material and the second metal material are made of different metal materials.
In an embodiment of the present utility model, the connection part includes:
a main welding sheet; and
the base layer sheet is arranged opposite to the main welding sheet, the main welding sheet is connected with the base layer sheet to form a U-shaped structure, and the closed end of the U-shaped structure is connected with the end part of the middle connecting sheet;
wherein, the hollow interlayer is positioned in the inner space of the U-shaped structure.
In an embodiment of the present utility model, the first metal material is copper, and the second metal material is aluminum.
In an embodiment of the utility model, the battery connecting piece further includes an insulating sleeve, and the insulating sleeve is coated on the outer surface of the butt joint part of the connecting part and the butt joint part.
In an embodiment of the utility model, the insulating sleeve is a heat-shrinkable sleeve.
In an embodiment of the utility model, the surface of the main connecting piece and the surface of the middle connecting piece are covered by an insulating layer.
In an embodiment of the utility model, two ends of the main connecting piece are bent to form bending parts.
In an embodiment of the utility model, the battery connecting piece further includes a connecting hole, and the connecting hole is disposed on the main connecting piece, and the main connecting piece is connected with the battery module.
The utility model also provides a battery module, comprising:
a plurality of electrical cores; and
the battery connecting piece is connected between two adjacent battery cells;
wherein, the battery connection piece includes:
the main connecting sheet is connected with the battery module;
the middle connecting piece is connected between the two ends of the main connecting piece;
the connecting parts are connected to the two ends of the middle connecting sheet;
a hollow interlayer arranged on one side of each connecting part facing the main connecting sheet; and
the butt joint parts are connected to the end parts of the main connecting pieces, which are close to the middle connecting pieces, and each butt joint part is welded in the opposite hollow interlayer;
the main connecting piece and the butt joint part are made of a first metal material, the middle connecting piece and the connecting part are made of a second metal material, and the first metal material and the second metal material are made of different metal materials.
The utility model also provides a battery pack which comprises at least one battery module.
As described above, the utility model provides a battery connecting piece, a battery module and a battery pack, which can improve the quality and the conductivity of the battery connecting piece.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing the structure of the battery connecting sheet of the present utility model.
Fig. 2 is a schematic structural diagram of a connection portion and a butt portion.
Description of element numbers:
10. a main connecting piece; 11. a connection hole;
20. a middle connecting sheet;
30. a connection part; 31. a hollow interlayer; 32. welding the tab; 33. a base sheet;
40. a butt joint part;
50. an insulating sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Please refer to fig. 1-2. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Referring to fig. 1, fig. 1 is a schematic diagram of a battery connecting piece according to an embodiment of the utility model. The battery connecting piece can be applied to various battery modules and battery packs, and single cells of the battery modules can be connected in series or in parallel through the battery connecting piece. The battery tabs may include a main tab 10, an intermediate tab 20, a connecting portion 30, a hollow interlayer 31, and a docking portion 40. Specifically, the main connection tab 10 may be connected to the battery module to connect the battery cells in the battery module in series or in parallel. The intermediate connection piece 20 may be connected between both ends of the main connection piece 10, and the intermediate connection piece 20 and the main connection piece 10 may be made of different metal materials to form a battery connection piece of composite material. The connection part 30 and the butt part 40 of different metal materials may be welded as one body so that the main connection tab 10 and the intermediate connection tab 20 are combined into a battery connection tab. The butt joint portion 40 can be welded in the cavity intermediate layer 31 of connecting portion 30, based on the design of intermediate layer 31 cladding butt joint portion 40, when carrying out the welding to connecting portion 30 and butt joint portion 40, welds from the one side surface of connecting portion 30, and the sharp burr point that the welding formed can be accepted to the opposite side inner wall of connecting portion 30, can significantly reduce the sharp burr on welding area surface, effectively improves the surface smoothness of welding area to battery connection piece's appearance quality has been improved. In addition, the connecting part 30 is coated on the butt joint part 40, so that the connecting strength of the welding part can be improved, and the welding part is not easy to break, thereby improving the connecting quality of the battery connecting sheet. Further, the butt joint part 40 is wrapped in the connecting part 30, so that a gap is not easy to generate at the compounding position of the butt joint part 40 and the connecting part 30, the possibility that the resistance of the butt joint part 40 and the connecting part 30 is increased due to oxidation of air is reduced, and the conductivity of the battery connecting sheet is improved.
Referring to fig. 1, in an embodiment of the utility model, in order to facilitate the connection of the battery connection sheet to the battery module, connection holes 11 may be formed at both ends of the main connection sheet 10, and the battery cell posts of the battery module may be connected through the connection holes 11. Further, the main connecting piece 10 may be made of a first metal material to perform a function of current transmission. Preferably, the first metal material may be copper, and the connection stability between the main connection piece 10 and the cell post may be improved due to the hardness of the copper. Further, the first metal material may be nickel material, copper nickel plating material or other metal material, and may be specifically set according to the actual connection requirement. In order to ensure that the main connecting piece 10 can be adaptively connected to the battery module, the length of the main connecting piece 10 can be set based on the structure of the battery module, two ends of the main connecting piece 10 can be adaptively bent based on the structure of the battery module to form a bending part, the bending part can meet the bending requirements of various shapes, and the bending angle can be unlimited, so that the battery connecting piece can be adaptive to the battery module.
Referring to fig. 1, in one embodiment of the present utility model, an intermediate tab 20 may be welded between two main tabs 10 to form a composite battery tab. The intermediate connection piece 20 may be made of a second metal material to perform the function of supplying current. Preferably, the first metal material of the main connecting piece 10 may be set to be copper material, and the second metal material of the intermediate connecting piece 20 may be set to be aluminum material. The copper material is harder, can guarantee the connection stability of main connection piece 10 and battery module. The aluminum material has a lower density than the copper material and a lower cost than the copper material, so that the weight and cost can be reduced when the aluminum intermediate connection piece 20 is used as the intermediate material of the battery connection piece.
Referring to fig. 2, in an embodiment of the present utility model, the connecting portions 30 may be disposed at two ends of the intermediate connecting piece 20 and integrally formed with the intermediate connecting piece 20, and may be made of a second metal material, such as aluminum or other materials. The connection portion 30 may include a main soldering tab 32 and a base sheet 33, and an inner space of a U-shaped structure formed by connecting the main soldering tab 32 and the base sheet 33 may be used as a hollow interlayer 31, and the hollow interlayer 31 of each U-shaped structure may be disposed on a side of each connection portion 30 facing the main connection tab 10 to cover the butt portion 40, thereby reducing sharp burrs during soldering. The closed end of each U-shaped structure may be integrally connected to the end of the intermediate connecting piece 20. Specifically, the main bonding piece 32 and the base layer piece 33 of the connection portion 30 sandwich the butt joint portion 40 in the hollow interlayer 31, and the outer surface of the main bonding piece 32 may be used as a welding work area during welding, and the main bonding piece 32, the butt joint portion 40, and the base layer piece 33 may be welded by a common ultrasonic welding method. At this time, the main welding piece 32 is deeply welded with the intermediate butt joint portion 40, and the base layer piece 33 can receive sharp burrs generated during welding, so that the sharp burrs on the surface of the welding area are greatly reduced, the surface flatness of the welding area is effectively improved, and the appearance quality of the battery connecting piece is improved. Meanwhile, the melt generated when the main welding piece 32 and the butt joint part 40 are welded can impact the base layer piece 33 and fuse with the base layer piece 33 into a whole, so that the composite area of the butt joint part 40 and the connecting part 30 is increased, the welding part of the battery connecting piece is not easy to break, the connection strength of the welding part of the battery connecting piece is increased, and the yield of the battery connecting piece is also increased.
Further, the butt-joint portion 40 is wrapped between the main welding sheet 32 and the base sheet 33, so that gaps are not easy to generate on the contact surfaces of the butt-joint portion 40, the main welding sheet 32 and the base sheet 33, the problem that the contact surfaces are oxidized by air is remarkably reduced, the possibility of occurrence of resistance increase is reduced, and the conductivity of the battery connecting sheet is improved.
Further, since the base sheet 33 of the battery connecting sheet can receive the sharp burrs generated when the main welding sheet 32 and the butt joint portion 40 are welded deeply, the ultrasonic welding power can be properly increased when the battery connecting sheet is welded, the welding effect can be improved on the basis of ensuring less sharp burrs on the surface of the welding area, and the yield can be improved.
Referring to fig. 1, in one embodiment of the utility model, the battery tab may further include an insulating sleeve 50. The insulating sleeve 50 may cover the surface of the junction between the connection portion 30 and the junction portion 40 to perform an insulating function. Further, the insulating sleeve 50 may be a heat-shrinkable sleeve to tightly cover the surface of the junction between the connection portion 30 and the junction portion 40, so as to ensure the insulating effect.
Further, the surface of the battery connecting piece may further include an insulating layer, and the insulating layer may cover all exposed metal surfaces of the main connecting piece 10 and the intermediate connecting piece 20 to ensure an insulating effect. The insulating layer may be a polyimide film or other insulating material, and is not limited herein.
The utility model also provides a battery module which can comprise a plurality of electric cores, and the number of the electric cores can be unlimited. The two adjacent cells can be connected through the battery connecting sheet so as to realize series connection or parallel connection between the cells. The welding part of the battery connecting piece can be welded in the hollow interlayer 31 in the connecting part 30 through the butt joint part 40, so that the quality and the conductivity of the battery connecting piece are improved, and the quality and the energy transmission effect of the battery module are further improved.
The utility model also provides a battery pack, which comprises one or more battery modules, wherein every two adjacent cells in the battery modules can be connected in series or in parallel through the battery connecting sheet, so that the quality and the energy transmission effect of the battery are improved.
In summary, the battery connecting piece, the battery module and the battery pack provided by the utility model can improve the quality and the conductivity of the battery connecting piece, thereby improving the quality and the energy transmission effect of the battery module and the battery pack.
In the description of the present specification, the descriptions of the terms "present embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The examples are not intended to be exhaustive or to limit the utility model to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. A battery connection tab, comprising:
the main connecting sheet is connected with the battery module;
the middle connecting piece is connected between the two ends of the main connecting piece;
the connecting parts are connected to the two ends of the middle connecting sheet;
a hollow interlayer arranged on one side of each connecting part facing the main connecting sheet; and
the butt joint parts are connected to the end parts of the main connecting pieces, which are close to the middle connecting pieces, and each butt joint part is welded in the opposite hollow interlayer;
the main connecting piece and the butt joint part are made of a first metal material, the middle connecting piece and the connecting part are made of a second metal material, and the first metal material and the second metal material are made of different metal materials.
2. The battery connecting piece according to claim 1, wherein the connecting portion includes:
a main welding sheet; and
the base layer sheet is arranged opposite to the main welding sheet, the main welding sheet is connected with the base layer sheet to form a U-shaped structure, and the closed end of the U-shaped structure is connected with the end part of the middle connecting sheet;
wherein, the hollow interlayer is positioned in the inner space of the U-shaped structure.
3. The battery tab of claim 1 wherein the first metal material is copper and the second metal material is aluminum.
4. The battery tab of claim 1 further comprising an insulating sleeve coating an outer surface of the junction of the connecting portion and the docking portion.
5. The battery tab of claim 4 wherein the insulating sleeve is a heat shrink sleeve.
6. The battery tab of claim 4 further comprising an insulating layer overlying surfaces of the main tab and the intermediate tab.
7. The battery connecting piece according to claim 1, wherein both ends of the main connecting piece are bent to form bent portions.
8. The battery connecting piece according to claim 1, further comprising a connecting hole provided on the main connecting piece, and the main connecting piece is connected with the battery module through the connecting hole.
9. A battery module, comprising:
a plurality of electrical cores; and
the battery connecting piece is connected between two adjacent battery cells;
wherein, the battery connection piece includes:
the main connecting sheet is connected with the battery module;
the middle connecting piece is connected between the two ends of the main connecting piece;
the connecting parts are connected to the two ends of the middle connecting sheet;
a hollow interlayer arranged on one side of each connecting part facing the main connecting sheet; and
the butt joint parts are connected to the end parts of the main connecting pieces, which are close to the middle connecting pieces, and each butt joint part is welded in the opposite hollow interlayer;
the main connecting piece and the butt joint part are made of a first metal material, the middle connecting piece and the connecting part are made of a second metal material, and the first metal material and the second metal material are made of different metal materials.
10. A battery pack comprising at least one battery module according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321338867.9U CN219717188U (en) | 2023-05-30 | 2023-05-30 | Battery connection piece, battery module and battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321338867.9U CN219717188U (en) | 2023-05-30 | 2023-05-30 | Battery connection piece, battery module and battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219717188U true CN219717188U (en) | 2023-09-19 |
Family
ID=88003258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321338867.9U Active CN219717188U (en) | 2023-05-30 | 2023-05-30 | Battery connection piece, battery module and battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219717188U (en) |
-
2023
- 2023-05-30 CN CN202321338867.9U patent/CN219717188U/en active Active
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