CN220628121U - Connection structure of lithium battery composite current collector, composite current collector and battery - Google Patents
Connection structure of lithium battery composite current collector, composite current collector and battery Download PDFInfo
- Publication number
- CN220628121U CN220628121U CN202322155990.3U CN202322155990U CN220628121U CN 220628121 U CN220628121 U CN 220628121U CN 202322155990 U CN202322155990 U CN 202322155990U CN 220628121 U CN220628121 U CN 220628121U
- Authority
- CN
- China
- Prior art keywords
- current collector
- composite current
- lithium battery
- connection structure
- conductive
- Prior art date
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 17
- 150000002641 lithium Chemical class 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 239000002390 adhesive tape Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material 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
- 239000007773 negative electrode material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a connecting structure of a lithium battery composite current collector, the composite current collector and a battery, wherein the connecting structure comprises: the current collector comprises a current collector body, a current collector and a current collector, wherein the current collector body comprises an insulating layer and conducting layers respectively arranged on two sides of the insulating layer, and notches or through holes are respectively formed on two opposite side edges of the current collector body; the clamping piece comprises a main body part and cornice formed by protruding two ends of the main body part towards the peripheral side, and when the clamping piece is arranged in the notch or the through hole, the cornice clamps the current collector body and is connected with conductive layers at two sides of the current collector body; the conductive connecting piece is at least arranged on one side of the current collector body and is used for connecting the two clamping pieces; the utility model can solve the problems that the traditional composite current collector is insufficient in connection strength of the conductive structure arranged on the notch of the traditional composite current collector and influences the use of the battery.
Description
Technical Field
The utility model relates to the technical field of current collectors, in particular to a connecting structure of a lithium battery composite current collector, the composite current collector and a battery.
Background
The current collector is a key auxiliary material of the lithium ion battery, and has the main function of conducting electricity, and the process of converting chemical energy into electric energy is realized by collecting current generated by active substances of the battery to form larger current output. The current collector serves as a carrier of the positive and negative electrode active materials and also serves as a positive and negative electrode electron collecting and conducting body, and the current collector is used for collecting current generated by the battery active materials so as to generate larger output current. Therefore, the ideal current collector is often required to have comprehensive properties in multiple aspects such as high conductivity, good stability, good mechanical strength, low cost and the like.
The composite current collector comprises a conductive layer, a high polymer diaphragm and a conductive layer, and has high safety, however, the conductive layers on two sides of the diaphragm of the composite current collector are not conducted, normal use of the battery cannot be guaranteed, a notch is only formed in the composite current collector by the conventional conductive layer connecting mechanism on two sides, and a conductive structure is arranged on the notch to enable the conductive layers on two sides of the diaphragm to be connected, but the connection strength of the conductive structure and the conductive layers is insufficient, and use of the battery cannot be effectively guaranteed.
Disclosure of Invention
The utility model aims to solve the technical problems that the traditional composite current collector is insufficient in connection strength of a conductive structure arranged on a notch of the traditional composite current collector, and the use of a battery is affected.
In a first aspect, the present utility model provides a connection structure of a lithium battery composite current collector, comprising:
the current collector comprises a current collector body, a current collector and a current collector, wherein the current collector body comprises an insulating layer and conducting layers respectively arranged on two sides of the insulating layer, and notches or through holes are respectively formed on two opposite side edges of the current collector body;
the clamping piece comprises a main body part and cornice formed by protruding two ends of the main body part towards the peripheral side, and when the clamping piece is arranged in the notch or the through hole, the cornice clamps the current collector body and is connected with conductive layers at two sides of the current collector body;
and the conductive connecting piece is at least arranged on one side of the current collector body and is used for connecting the two clamping pieces.
The utility model discloses a be located the joint spare on the notch of electric current collector body through electrically conductive connecting piece with two and be connected, electrically conductive connecting piece is in the state of stretching to make the firm joint in eaves limit of joint spare on the electric current collector body, it is convenient to install, easy operation possesses the practicality, production technology is simple.
In the preferred technical scheme of the lithium battery composite current collector connecting structure, the two conductive connecting pieces are respectively positioned at the top and the bottom of the current collector body 1 and are respectively connected with the cornice at the end parts of the two clamping pieces. Through this kind of setting, can balance the tensile force that the joint piece both sides, guarantee joint piece and the stability of mass flow body coupling, corresponding, electrically conductive connecting piece also laminates with the mass flow body to this overcurrent ability that improves mass flow body 1.
In the preferred technical scheme of the lithium battery composite current collector connecting structure, the conductive connecting piece is a conductive adhesive tape.
In the preferred technical scheme of the lithium battery composite current collector connecting structure, any one of the clamping pieces is provided with a limiting groove, a tab is arranged in the limiting groove, and the tab and the clamping piece are welded. Through this kind of setting, can further improve the joint strength of utmost point ear and joint spare, improve the life of this application.
In the preferred technical scheme of the lithium battery composite current collector connecting structure, the thickness of the tab in the limiting groove is smaller than that of the clamping piece.
In the preferred technical scheme of the lithium battery composite current collector connecting structure, the notch is in a sector shape, a rectangle shape or an oval shape.
In the preferable technical scheme of the lithium battery composite current collector connecting structure, the thickness of the cornice is 0.1-2mm.
In the preferable technical scheme of the lithium battery composite current collector connecting structure, the thickness of the notch is 2-20mm, and the width of the notch is 5-15mm.
In a second aspect, the utility model also provides a composite current collector, which comprises the lithium battery composite current collector connecting structure.
In a third aspect, the utility model also provides a battery comprising the composite current collector described above.
The beneficial effects of the utility model are as follows: according to the current collector body connecting structure, the two clamping pieces located on the notch of the current collector body are connected through the two conductive connecting pieces, so that tension forces on two sides of the clamping pieces are balanced, the stability of connection of the clamping pieces and the current collector body is guaranteed, meanwhile, the conductive connecting pieces are attached to the current collector body, and the overcurrent capacity of the current collector body can be improved.
Drawings
Fig. 1 is a cross-sectional view of a current collector body;
fig. 2 is a perspective view of a current collector body;
FIG. 3 is a schematic view of the snap fitting mounted on the current collector body;
FIG. 4 is a schematic view of a clip and a conductive connector;
FIG. 5 is a schematic view of a structure of the clamping member;
in the figure: the current collector comprises a current collector body 1, an insulating layer 11, a conductive layer 12, a notch 2, a clamping piece 3, a main body part 31, a cornice 32, a limit groove 33, a conductive connecting piece 4 and a tab 5.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1 to 5, the connection structure of the lithium battery composite current collector of the present utility model includes:
the current collector body 1 comprises an insulating layer 11 and conducting layers 12 respectively arranged at two sides of the insulating layer 11, and notches 2 or through holes are respectively formed on two opposite side edges of the current collector body 1;
the clamping piece 3 comprises a main body part 31 and cornice 32 formed by protruding two ends of the main body part 31 towards the periphery, and when the clamping piece 3 is placed in the notch 2 or the through hole, the cornice 32 clamps the current collector body 1 and forms connection with the conductive layers 12 on two sides of the current collector body 1;
the conductive connecting piece 4 is at least arranged on one side of the current collector body 1 and is used for connecting the two clamping pieces 3.
Referring to fig. 2, the notches 2 are formed on both sides of the current collector body 1 in the length direction, and the two notches 2 are disposed opposite to each other.
Referring to fig. 1 and 5, three sides of the clamping piece 3 used for connecting the notch 2 are formed with cornice 32, when the clamping piece 3 is installed in the notch 2, the sides of the clamping piece 3 are flush with the sides of the length direction of the current collector body 1, and cornice 32 arranged on the upper part and the lower part of the clamping piece 3 are respectively connected with two conductive layers 12 of the current collector body 1, so that the conducting effect on the conductive layers 12 is realized. In addition, any clamping piece 3 is used for connecting the tab 5.
Referring to fig. 3 and 4, the conductive connecting piece 4 is used for connecting two clamping pieces 3, correspondingly, after the two clamping pieces 3 are installed on the notch 2 of the current collector body 1, the conductive connecting piece 4 is in a straightened state, so that the two clamping pieces 3 can be clamped on the notch 2 of the current collector body 1 through the cornice 32, the installation is convenient, the operation is simple, and the practicability is realized; both clamping members 3 are made of conductive materials, such as copper, aluminum, etc.
In one or more embodiments, the conductive connectors 4 have two, and the two conductive connectors 4 are respectively located at the top and bottom of the current collector body 1 and are respectively connected to the cornice 32 at the ends of the two clamping pieces 3.
Referring to fig. 3 and 4, two conductive connecting pieces 4 are respectively located at two sides of the current collector body 1, that is, opposite to a conductive layer 12, and a conductive connecting piece 4 is correspondingly arranged, two ends of each conductive connecting piece 4 are respectively arranged on the cornice 32 of two clamping pieces 3, by means of the arrangement, the tensile force applied to two sides of each clamping piece 3 can be balanced, the connection stability of the clamping pieces 3 and the current collector body 1 is ensured, and correspondingly, the conductive connecting piece 4 is also attached to the current collector body 1, so that the overcurrent capacity of the current collector body 1 is improved.
In one or more embodiments, the conductive connection 4 is a conductive tape.
It should be noted that, the conductive adhesive tape has certain flexibility, can adapt to the current collector, satisfies the use under different environments, and simultaneously, the conductive adhesive tape has good overcurrent capacity, satisfies the battery use requirement.
In one or more embodiments, a limiting groove 33 is formed in any clamping piece 3, and a tab 5 is accommodated in the limiting groove 33, and the tab 5 and the clamping piece 3 are welded together.
Referring to fig. 3 to 5, the limiting groove 33 is annular, the limiting groove 33 is communicated with the outside on the clamping piece 3, the lug 5 corresponding to the shape of the limiting groove 33 is arranged in the limiting groove 33, and the lug 5 and the clamping piece 3 are welded. Through this kind of setting, can further improve the joint strength of utmost point ear 5 and joint spare 3, improve the life of this application.
Alternatively, the limiting groove 33 may have a triangular, oval, diamond-shaped structure.
In one or more embodiments, the thickness of the tab 5 located in the limit groove 33 is smaller than the thickness of the clip 3.
It can be understood that the thickness of the tab 5 is smaller than that of the limit groove 33 of the clamping piece 3, so that the tab 5 can be welded in the limit groove 33, and the tab 5 can be flush with the top surface and the bottom surface of the clamping piece 3, so that other parts can be prevented from being scratched by the tab 5, and the practicality is achieved.
In one or more embodiments, the notch 2 is fan-shaped, rectangular, or oval.
It should be noted that, the shape of the notch 2 is not limited, and the clamping piece 3 is only required to be conveniently placed into the notch 2, and specifically, the shape is required to be selected according to actual production.
In one or more embodiments, the cornice 32 has a thickness of 0.1-2mm.
In one or more embodiments, the thickness of the gap 2 is 2-20mm and the width of the gap 2 is 5-15mm.
Further, the utility model also provides a composite current collector, which is provided with the lithium battery composite current collector connecting structure in any embodiment.
Further, the utility model also provides a battery, which is provided with the composite current collector in any embodiment.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A connection structure of a lithium battery composite current collector, comprising:
the current collector comprises a current collector body, a current collector and a current collector, wherein the current collector body comprises an insulating layer and conducting layers respectively arranged on two sides of the insulating layer, and notches or through holes are respectively formed on two opposite side edges of the current collector body;
the clamping piece comprises a main body part and cornice formed by protruding two ends of the main body part towards the peripheral side, and when the clamping piece is arranged in the notch or the through hole, the cornice clamps the current collector body and is connected with conductive layers at two sides of the current collector body;
and the conductive connecting piece is at least arranged on one side of the current collector body and is used for connecting the two clamping pieces.
2. The connection structure of the lithium battery composite current collector according to claim 1, wherein: the two conductive connecting pieces are respectively positioned at the top and the bottom of the current collector body (1) and are respectively connected with the cornice at the end parts of the two clamping pieces.
3. The connection structure of a lithium battery composite current collector according to claim 1 or 2, characterized in that: the conductive connecting piece is a conductive adhesive tape.
4. The connection structure of the lithium battery composite current collector according to claim 1, wherein: any one of the clamping pieces is provided with a limiting groove, a lug is arranged in the limiting groove, and the lug is welded with the clamping piece.
5. The connection structure of a lithium battery composite current collector according to claim 4, wherein: the thickness of the lug in the limiting groove is smaller than that of the clamping piece.
6. The connection structure of the lithium battery composite current collector according to claim 1, wherein: the notch is sector, rectangular or elliptic.
7. The connection structure of the lithium battery composite current collector according to claim 1, wherein: the thickness of the cornice is 0.1-2mm.
8. The connection structure of the lithium battery composite current collector according to claim 1, wherein: the thickness of the notch is 2-20mm, and the width of the notch is 5-15mm.
9. A composite current collector comprising the connection structure of a lithium battery composite current collector according to any one of claims 1 to 8.
10. A battery comprising the composite current collector of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322155990.3U CN220628121U (en) | 2023-08-10 | 2023-08-10 | Connection structure of lithium battery composite current collector, composite current collector and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322155990.3U CN220628121U (en) | 2023-08-10 | 2023-08-10 | Connection structure of lithium battery composite current collector, composite current collector and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220628121U true CN220628121U (en) | 2024-03-19 |
Family
ID=90218554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322155990.3U Active CN220628121U (en) | 2023-08-10 | 2023-08-10 | Connection structure of lithium battery composite current collector, composite current collector and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220628121U (en) |
-
2023
- 2023-08-10 CN CN202322155990.3U patent/CN220628121U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |