CN211376790U - Tab structure and lithium ion battery thereof - Google Patents
Tab structure and lithium ion battery thereof Download PDFInfo
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- CN211376790U CN211376790U CN201922121243.1U CN201922121243U CN211376790U CN 211376790 U CN211376790 U CN 211376790U CN 201922121243 U CN201922121243 U CN 201922121243U CN 211376790 U CN211376790 U CN 211376790U
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- heat
- heat conduction
- tab
- utmost point
- point ear
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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 provides a utmost point ear structure and lithium ion battery thereof, utmost point ear structure includes: the heat-conducting metal strip is arranged on the lug belt, the lug glue block is arranged on the mounting part, two ends of the lug glue block respectively extend out of the mounting part, and a heat-radiating area is arranged on one side surface of the lug glue block close to the heat-conducting part; the heat conduction metal band comprises a heat conduction metal sheet and a heat dissipation metal sheet, the heat conduction metal sheet is arranged on the heat conduction part, and the heat dissipation metal sheet is connected with the heat conduction metal sheet. The utility model discloses a utmost point ear structure is through setting up utmost point ear area, utmost point ear glue piece and heat conduction strap to through the mode that sets up the heat conduction strap that has good heat conduction heat dispersion ability in the position department that the temperature is the highest on utmost point ear area, derive the heat that utmost point ear area produced when the short circuit detects fast, the risk of catching fire when effectively having reduced the short circuit detection, make lithium ion cell safer when the short circuit detects, thereby make lithium ion battery safer when using.
Description
Technical Field
The utility model relates to a battery manufacturing technology field especially relates to a utmost point ear structure and lithium ion battery thereof.
Background
As a mobile power source, a lithium ion battery has been widely used in portable electronic products, such as smart wearable bracelets, smart watches, smart phones, tablet computers, and the like. As a personal belonging frequently used in daily life, safety thereof is a major concern of consumers; the short circuit test is a common detection method for detecting the safety of the lithium ion battery cell, and the qualified standard of the short circuit test is that the lithium ion battery cell does not catch fire or explode.
In the design and development of the lithium ion battery cell, besides optimizing an internal chemical system, the safety performance of the battery is generally improved by matching with a suitable tab, for example, a tab with a suitable width and thickness is selected to pass a short circuit test. However, in special cases, such as the limitation of narrow cell width and protection plate matching, only tabs with narrow metal strip width can be selected, the heat conduction and heat dissipation effects of the tabs with narrow metal strips are obviously not as good as those of the tabs with wide metal strips, and the cells are easily ignited during short circuit test, so that the test result is unqualified.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a can improve utmost point ear heat conduction and radiating effect's utmost point ear structure and lithium ion battery thereof.
The purpose of the utility model is realized through the following technical scheme:
a tab structure, comprising:
the lug belt is provided with an installation part and a heat conduction part, and the installation part is connected with the heat conduction part;
the lug glue block is arranged on the mounting part, two ends of the lug glue block respectively extend out of the mounting part, and a heat dissipation area is arranged on one side surface of the lug glue block close to the heat conduction part; and
the heat conduction strap, the heat conduction strap includes heat conduction sheetmetal and heat dissipation sheetmetal, the heat conduction sheetmetal set up in on the heat conduction portion, just the heat conduction sheetmetal with the heat dissipation district laminates mutually, the heat dissipation sheetmetal with the heat conduction sheetmetal is connected, just the heat dissipation sheetmetal with one end looks parallel and level of utmost point ear glue piece.
In one embodiment, two heat dissipation metal sheets are provided, the two heat dissipation metal sheets are respectively connected with the heat conduction metal sheet, and the two heat dissipation metal sheets are respectively flush with two ends of the tab glue block.
In one embodiment, the thermally conductive metal strip is a one-piece structure.
In one embodiment, the heat-conducting metal strip is a nickel metal strip, and a heat-conducting copper layer is arranged on the surface of the nickel metal strip.
In one embodiment, the thickness of the heat-conducting metal strip is 0.06 mm-0.20 mm.
In one embodiment, the width of the heat-conducting metal strip is 2 mm-5 mm.
In one embodiment, the polar ear strap is a nickel polar ear strap.
In one embodiment, the heat-conducting metal strip is arranged perpendicular to the pole lug strip.
In one embodiment, the heat-conducting metal strip is arranged in parallel with the tab glue block.
In one embodiment, the lithium ion battery comprises the tab structure.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a utmost point ear structure is through setting up utmost point ear area, utmost point ear glue piece and heat conduction strap to through the mode that sets up the heat conduction strap that has good heat conduction heat dispersion ability in the position department that the temperature is the highest on utmost point ear area, derive the heat that utmost point ear area produced when the short circuit detects fast, the risk of catching fire when effectively having reduced the short circuit detection, make lithium ion cell safer when the short circuit detects, thereby make lithium ion battery safer when using.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a tab structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a tab structure according to another embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It is noted that as used herein, reference to an element being "connected" to another element also means that the element is "in communication" with the other element, and fluid can be in exchange communication between the two.
In one embodiment, a tab structure includes: the heat-conducting type battery pole lug comprises a pole lug belt, a pole lug glue block and a heat-conducting metal belt, wherein an installation part and a heat-conducting part are arranged on the pole lug belt, and the installation part is connected with the heat-conducting part; the lug glue block is arranged on the mounting part, two ends of the lug glue block respectively extend out of the mounting part, and a heat dissipation area is arranged on one side surface of the lug glue block close to the heat conduction part; the heat conduction strap comprises a heat conduction metal sheet and a heat dissipation metal sheet, the heat conduction metal sheet is arranged on the heat conduction portion, the heat conduction metal sheet is attached to the heat dissipation area, the heat dissipation metal sheet is connected with the heat conduction metal sheet, and the heat dissipation metal sheet is parallel and level to one end of the tab glue block. The utility model discloses a utmost point ear structure is through setting up utmost point ear area, utmost point ear glue piece and heat conduction strap to through the mode that sets up the heat conduction strap that has good heat conduction heat dispersion ability in the position department that the temperature is the highest on utmost point ear area, derive the heat that utmost point ear area produced when the short circuit detects fast, the risk of catching fire when effectively having reduced the short circuit detection, make lithium ion cell safer when the short circuit detects, thereby make lithium ion battery safer when using.
The above-described tab structure is better explained to better understand the concept of the tab structure. Referring to fig. 1, a tab structure 10 includes: the tab strip 100 is provided with an installation part 110 and a heat conduction part 120, and the installation part 110 is connected with the heat conduction part 120; the tab glue block 200 is disposed on the mounting portion 110, two ends of the tab glue block 200 respectively extend out of the mounting portion 110, and a heat dissipation area 210 is disposed on a side surface of the tab glue block 200 close to the heat conduction portion 120. The heat conductive metal strap 300 includes a heat conductive metal strap 310 and a heat dissipating metal strap 320, the heat conductive metal strap 310 is disposed on the heat conductive portion 120, the heat conductive metal strap 310 is attached to the heat dissipating region 210, the heat dissipating metal strap 320 is connected to the heat conductive metal strap 310, and the heat dissipating metal strap 320 is flush with one end of the tab glue block 200. In this embodiment, the electrode tab is a nickel electrode tab, and the heat conductive metal strip is a rectangular parallelepiped.
The mounting portion 110 and the heat conduction portion 120 are located at the center of the tab strip 100, the mounting portion 110 is used for connecting with the tab glue block 200, and the heat conduction portion 120 is used for connecting with the heat conduction metal strip 300. When the lithium ion battery is short-circuited, the position with the highest temperature on the tab strip 100 is the position where the tab glue block 200 extends 4mm-5mm in the direction of the heat conducting portion 120, that is, the position with the highest temperature is at the position of the heat conducting portion 120, so that heat on the heat conducting portion 120 can be dissipated by arranging the heat conducting metal strip 300 on the heat conducting portion 120, thereby improving the heat conducting and dissipating capacity of the maximum temperature position of the tab structure 10, and improving the safety of the lithium ion battery during the short-circuit test. Specifically, heat conduction metal sheet 310 sets up on heat conduction portion 120, and heat conduction metal sheet 310 laminates with radiating area 210 mutually, so, can absorb the heat on utmost point ear area 100 fast, simultaneously, because heat dissipation metal sheet 320 is connected with heat conduction metal sheet 310, and heat dissipation metal sheet 320 is parallel and level with one end of utmost point ear glue piece 200, thereby can absorb the heat on the heat conduction metal sheet 310 and give off to outside utmost point ear area 100, improve the heat conduction heat-sinking capability of utmost point ear structure 10 from this, make the holistic security performance of battery obtain improving.
Referring to fig. 2, two heat dissipation metal sheets 320 are disposed, the two heat dissipation metal sheets 320 are respectively connected to the heat conduction metal sheet 310, and the two heat dissipation metal sheets 320 are respectively flush with two ends of the tab glue block 200.
It should be noted that, by providing two heat dissipation metal sheets 320, the heat conduction and dissipation area of the heat conduction metal band 300 can be increased, thereby improving the safety performance of the entire battery. Specifically, heat conduction metal sheet 310 sets up on heat conduction portion 120, and heat conduction metal sheet 310 laminates with radiating area 210 mutually, so, can absorb the heat on utmost point ear area 100 fast, and simultaneously, heat dissipation metal sheet 320 is provided with two, two heat dissipation metal sheets 320 are connected with heat conduction metal sheet 310 respectively, and two heat dissipation metal sheets 320 are parallel and level with utmost point ear rubber block 200's both ends respectively, thereby can absorb the heat on the heat conduction metal sheet 310 and give off outside the both sides of utmost point ear area 100, can further improve the heat conduction heat-sinking capability of utmost point ear structure 10 from this, make the holistic security performance of battery obtain improving.
In one embodiment, the heat-conducting metal belt is an integrally formed structure, so that the structural strength of the heat-conducting metal belt can be improved, and the production and processing process can be simplified; for another example, the heat-conducting metal belt is a nickel metal belt, and the surface of the nickel metal belt is provided with a heat-conducting copper layer, so that the heat-conducting metal belt has good heat conduction and heat dissipation performance, and the heat conduction and heat dissipation capacity of the heat-conducting metal belt can be further improved; for another example, the thickness of the heat-conducting metal belt is 0.06 mm-0.20 mm, so that the heat-conducting metal belt can better adapt to the production and processing of battery processing equipment and can be better matched with a battery protection plate, and the production, installation and operation are more flexible and convenient; preferably, the thickness of the heat-conducting metal belt is 0.11mm, so that the heat-conducting metal belt can better adapt to the production and processing of battery processing equipment and can be better matched with a battery protection plate, and the production, installation and operation are more flexible and convenient; for another example, the width of the heat-conducting metal belt is 2mm to 5mm, so that the part with the highest temperature on the lug belt 100 can be covered, the heat at the position with the highest temperature on the lug belt 100 can be quickly led out by the heat-conducting metal belt, and the heat-conducting and heat-dissipating performance of the whole body is improved; preferably, the width of heat conduction strap is 4mm, so, can cover the position that utmost point ear area 100 goes up the highest temperature for heat conduction strap can derive the heat of utmost point ear area 100 upper temperature highest department fast, makes holistic heat conduction heat dispersion improve.
Referring to fig. 1 again, the heat-conducting metal band is perpendicular to the tab band, and the heat-conducting metal band is parallel to the tab glue block, so that the overall structural strength can be improved, and the overall structure is more compact.
A lithium ion battery includes the tab structure 10 as in any one of the above embodiments.
For example, the lithium ion battery is a soft package battery, wherein the tab structure 10 serves as a positive tab and/or a negative tab of the lithium ion battery, so that the overall heat conduction and heat dissipation capacity of the lithium ion battery can be improved, and the safety of the lithium ion battery is higher during a short circuit test.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a utmost point ear structure 10 is through setting up utmost point ear area 100, utmost point ear glues piece 200 and heat conduction strap 300 to through the mode that the highest position department of temperature set up the heat conduction strap 300 that has good heat conduction heat dispersion on utmost point ear area 100, derive the heat that utmost point ear area 100 produced when the short circuit detects fast, the risk of catching fire when effectively having reduced the short circuit and detecting, make lithium ion cell safer when the short circuit detects, thereby make lithium ion battery safer when using.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A tab structure, comprising:
the lug belt is provided with an installation part and a heat conduction part, and the installation part is connected with the heat conduction part;
the lug glue block is arranged on the mounting part, two ends of the lug glue block respectively extend out of the mounting part, and a heat dissipation area is arranged on one side surface of the lug glue block close to the heat conduction part; and
the heat conduction strap, the heat conduction strap includes heat conduction sheetmetal and heat dissipation sheetmetal, the heat conduction sheetmetal set up in on the heat conduction portion, just the heat conduction sheetmetal with the heat dissipation district laminates mutually, the heat dissipation sheetmetal with the heat conduction sheetmetal is connected, just the heat dissipation sheetmetal with one end looks parallel and level of utmost point ear glue piece.
2. The tab structure of claim 1, wherein two heat-dissipating metal sheets are provided, the two heat-dissipating metal sheets are respectively connected to the heat-conducting metal sheets, and the two heat-dissipating metal sheets are respectively flush with two ends of the tab glue block.
3. The tab structure of claim 1, wherein the thermally conductive metal strip is an integrally formed structure.
4. The tab structure of claim 1, wherein the heat conductive metal strip is a nickel metal strip, and a surface of the nickel metal strip is provided with a heat conductive copper layer.
5. The tab structure of claim 1, wherein the heat conductive metal strip has a thickness of 0.06mm to 0.20 mm.
6. The tab structure of claim 5, wherein the width of the heat-conductive metal strip is 2mm to 5 mm.
7. The tab structure of claim 1 wherein the tab band is a nickel tab band.
8. A tab structure as claimed in claim 1, wherein the heat conductive metal strip is disposed perpendicular to the tab strip.
9. The tab structure of claim 1, wherein the heat conductive metal strip is disposed in parallel with the tab glue block.
10. A lithium ion battery comprising the tab structure of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121243.1U CN211376790U (en) | 2019-11-28 | 2019-11-28 | Tab structure and lithium ion battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121243.1U CN211376790U (en) | 2019-11-28 | 2019-11-28 | Tab structure and lithium ion battery thereof |
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| Publication Number | Publication Date |
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| CN211376790U true CN211376790U (en) | 2020-08-28 |
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| CN201922121243.1U Active CN211376790U (en) | 2019-11-28 | 2019-11-28 | Tab structure and lithium ion battery thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115632196A (en) * | 2022-12-07 | 2023-01-20 | 南京莱迪新能源科技有限公司 | Series-parallel connection frame structure of lithium battery pack in mobile power supply and heat extraction method |
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2019
- 2019-11-28 CN CN201922121243.1U patent/CN211376790U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115632196A (en) * | 2022-12-07 | 2023-01-20 | 南京莱迪新能源科技有限公司 | Series-parallel connection frame structure of lithium battery pack in mobile power supply and heat extraction method |
| CN115632196B (en) * | 2022-12-07 | 2023-02-28 | 南京莱迪新能源科技有限公司 | Series-parallel connection frame structure of lithium battery pack in mobile power supply and heat extraction method |
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Effective date of registration: 20230920 Address after: No.38, Huifeng 7th Road, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee after: EVE ENERGY Co.,Ltd. Address before: 516006 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Patentee before: Huizhou Yiwei Energy Battery Co.,Ltd. |