CN209071490U - Tab with trapezoidal structure for ternary lithium ion battery - Google Patents
Tab with trapezoidal structure for ternary lithium ion battery Download PDFInfo
- Publication number
- CN209071490U CN209071490U CN201821801743.9U CN201821801743U CN209071490U CN 209071490 U CN209071490 U CN 209071490U CN 201821801743 U CN201821801743 U CN 201821801743U CN 209071490 U CN209071490 U CN 209071490U
- Authority
- CN
- China
- Prior art keywords
- piece
- battery
- positive pole
- tab
- lithium ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 241000826860 Trapezium Species 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000004411 aluminium 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
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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 utmost point ear that is used for ternary lithium ion battery to have trapezium structure, include: the battery comprises a battery body, N anode lugs and (N +1) cathode lugs; the N positive pole lugs are fixedly connected to the top of a positive pole piece of the battery body and are arranged at intervals to form a positive pole lug; the (N +1) negative pole lug pieces are fixedly connected to the top of the negative pole piece of the battery body, and the (N +1) negative pole lug pieces are arranged at intervals to form a negative pole lug together. The utility model discloses the battery is at the in-process of charge-discharge, and the heat that positive pole ear produced can be through the space effluvium between two arbitrary adjacent positive pole auricles, and the heat that negative pole ear produced can be through the space effluvium between two arbitrary adjacent negative pole auricles, is favorable to increasing the heat dissipation of positive pole ear when the battery overflows, is showing the temperature rise that reduces battery positive pole ear overcurrent.
Description
Technical field
The utility model relates to technical field of lithium ion, more particularly to a kind of ternary lithium ion battery that is used for have ladder
The tab of shape structure.
Background technique
The positive and negative anodes active material of lithium ion battery needs to be coated on aluminium, on copper current collector, passes through tab and battery electrode column
It is connected with external circuit, the designs such as size and shape of tab can cause to show to the heat production of battery during the work time and temperature rise
The influence of work.
The tab of lithium ion battery is usually designed to the quadrilateral structure of rule, and the tab of this structure is when electric current passes through
It is unable to scattered current, causes heat production higher, temperature drift at tab.However, being filled for high-energy-density type ternary lithium ion battery
Discharge process current strength is big, and the tab of conventional regular quadrilateral structure is unable to satisfy the requirement of scattered current, leads to tab
It is excessively high with the heat production of battery pole piece junction and temperature rise.
Utility model content
To solve technical problem present in background technique, the utility model proposes one kind to have for ternary lithium ion battery
There is the tab of trapezium structure.
The utility model proposes it is a kind of for ternary lithium ion battery have trapezium structure tab, comprising: battery sheet
Body, N number of positive pole ear piece and (N+1) a negative lug piece；
N number of positive pole ear piece is fixedly connected at the top of the anode pole piece of battery body, and N number of positive pole ear piece arranged for interval
A positive pole ear is collectively formed；(N+1) a negative lug piece is fixedly connected at the top of the cathode pole piece of battery body, and (N+
1) negative lug is collectively formed in a negative lug piece arranged for interval.
Preferably, each positive pole ear piece is trapezium structure, the bottom of positive pole ear piece and the positive pole of battery body
It is fixedly connected at the top of piece.
Preferably, the bottom length of each positive pole ear piece is 36mm, and it is highly 25mm that upper bottom length, which is 26mm, thickness
For 10um.
Preferably, the number of positive pole ear piece is 18~20.
Preferably, each negative lug piece is trapezium structure, the bottom of negative lug piece and the cathode pole of battery body
It is fixedly connected at the top of piece.
Preferably, the bottom length of each negative lug piece is 36mm, and it is highly 25mm that upper bottom length, which is 26mm, thickness
For 8um.
In the utility model, what is proposed has the tab of trapezium structure for ternary lithium ion battery, and positive pole ear is by N
A positive pole ear piece interval composition, negative lug are made of (N+1) a negative lug piece interval, process of the battery in charge and discharge
In, the heat that positive pole ear generates can be shed by the gap between two positive pole ear pieces of arbitrary neighborhood, negative lug
The heat of generation can be shed by the gap between two negative lug pieces of arbitrary neighborhood, when being conducive to increase battery overcurrent
The heat dissipation of positive and negative tab significantly reduces the temperature rise of battery plus-negative plate ear overcurrent.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of for ternary lithium ion battery there is the structure of tab of trapezium structure to show
It is intended to.
Specific embodiment
As shown in FIG. 1, FIG. 1 is the utility model proposes it is a kind of for ternary lithium ion battery have trapezium structure pole
The structural schematic diagram of ear.
Referring to Fig.1, the utility model proposes it is a kind of for ternary lithium ion battery have trapezium structure tab, packet
It includes: battery body 1, N number of positive pole ear piece 2 and N+1 negative lug piece 3；
N number of positive pole ear piece 2 is fixedly connected at the top of the anode pole piece of battery body 1, and N number of positive pole ear piece 2 is spaced
A positive pole ear is collectively formed in arrangement；N+1 negative lug piece 3 is fixedly connected at the top of the cathode pole piece of battery body 1, and
A negative lug is collectively formed in N+1 3 arranged for interval of negative lug piece.
The present embodiment for ternary lithium ion battery have trapezium structure tab in specific work process, it is N number of just
Pole tab one end is fixedly connected at the top of the anode pole piece of battery body 1, and the other end is fixedly connected on the pole of battery cover board；
N+1 3 one end of negative lug piece is fixedly connected at the top of the cathode pole piece of battery body 1, and the other end is fixedly connected on battery cover
On the pole of plate, assembling carries out charge and discharge to battery after finishing.
In the present embodiment, what is proposed has the tab of trapezium structure for ternary lithium ion battery, and positive pole ear is by N
A interval of positive pole ear piece 2 composition, negative lug are made of the N+1 interval of negative lug piece 3, process of the battery in charge and discharge
In, the heat that positive pole ear generates can be shed by the gap between two positive pole ear pieces 2 of arbitrary neighborhood, negative lug
The heat of generation can be shed by the gap between two negative lug pieces 3 of arbitrary neighborhood, be conducive to increase battery overcurrent
When positive and negative tab heat dissipation, significantly reduce the temperature rise of battery plus-negative plate ear overcurrent.
In a specific embodiment, to reduce the impedance between positive pole ear piece 2 and battery cover board pole, reduce positive pole
Auricle 2 and the temperature difference of battery anode slice and battery cover board pole at work, each positive pole ear piece 2 is trapezium structure,
It is fixedly connected at the top of the bottom of positive pole ear piece 2 and the anode pole piece of battery body 1.
Further, to match with the size of battery cover board, the bottom length of each positive pole ear piece 2 is 36mm, on
Bottom length is 26mm, is highly 25mm, with a thickness of 10um.
It further, is the capacity of match battery, the number of positive pole ear piece 2 is 18~20.
Further, to reduce the impedance between negative lug piece 3 and battery cover board pole, reduce negative lug piece 3 with
The temperature difference of battery negative and positive pole piece and battery cover board pole at work, each negative lug piece 3 are trapezium structure, cathode pole
It is fixedly connected at the top of the bottom of auricle 3 and the cathode pole piece of battery body 1.
Further, to match with the size of battery cover board, the bottom length of each negative lug piece 3 is 36mm,
Upper bottom length is 26mm, is highly 25mm, with a thickness of 8um.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of tab for ternary lithium ion battery with trapezium structure characterized by comprising battery body (1), N
A positive pole ear piece (2) and (N+1) a negative lug piece (3)；
N number of positive pole ear piece (2) is fixedly connected at the top of the anode pole piece of battery body (1), and between N number of positive pole ear piece (2)
A positive pole ear is collectively formed every arrangement；(N+1) a negative lug piece (3) is fixedly connected on the cathode pole of battery body (1)
At the top of piece, and a negative lug is collectively formed in (N+1) a negative lug piece (3) arranged for interval.
2. the tab for ternary lithium ion battery with trapezium structure according to claim 1, which is characterized in that each
Positive pole ear piece (2) is trapezium structure, is fixed at the top of the bottom of positive pole ear piece (2) and the anode pole piece of battery body (1)
Connection.
3. the tab for ternary lithium ion battery with trapezium structure according to claim 2, which is characterized in that each
The bottom length of positive pole ear piece (2) is 36mm, and it is highly 25mm, with a thickness of 10um that upper bottom length, which is 26mm,.
4. the tab for ternary lithium ion battery with trapezium structure according to claim 1, which is characterized in that anode
The number of tab piece (2) is 18~20.
5. the tab for ternary lithium ion battery with trapezium structure according to claim 1, which is characterized in that each
Negative lug piece (3) is trapezium structure, is fixed at the top of the bottom of negative lug piece (3) and the cathode pole piece of battery body (1)
Connection.
6. the tab for ternary lithium ion battery with trapezium structure according to claim 5, which is characterized in that each
The bottom length of negative lug piece (3) is 36mm, and it is highly 25mm, with a thickness of 8um that upper bottom length, which is 26mm,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821801743.9U CN209071490U (en) | 2018-11-02 | 2018-11-02 | Tab with trapezoidal structure for ternary lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821801743.9U CN209071490U (en) | 2018-11-02 | 2018-11-02 | Tab with trapezoidal structure for ternary lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209071490U true CN209071490U (en) | 2019-07-05 |
Family
ID=67097424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821801743.9U Active CN209071490U (en) | 2018-11-02 | 2018-11-02 | Tab with trapezoidal structure for ternary lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209071490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022001382A1 (en) * | 2020-06-30 | 2022-01-06 | 比亚迪股份有限公司 | Tab and cell having same, battery module and battery pack |
-
2018
- 2018-11-02 CN CN201821801743.9U patent/CN209071490U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022001382A1 (en) * | 2020-06-30 | 2022-01-06 | 比亚迪股份有限公司 | Tab and cell having same, battery module and battery pack |
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